tag:blogger.com,1999:blog-27928119869539880662024-03-13T07:31:04.741-07:00Signals AnalysisMariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comBlogger140125tag:blogger.com,1999:blog-2792811986953988066.post-77064517720764998622012-03-05T10:39:00.000-08:002012-03-05T10:39:36.111-08:00SA Update to version v 6.2.6.7: two monitors<div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">SA Update to version <a href="http://signals.radioscanner.ru/info/files/item1/sa_6267.rar" target="_blank">v 6.2.6.7</a></span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">This is planned update.</span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Correct work of SA in the systems with two and more monitors is realized In this update.</span></div><div><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDFC8Zp1X85ulqPLsTKIfhNr86EQP5GyuZpNJftvOHBAZSuTIUXcyEfZqwEfqBcQHoEatreevupPG7xgkyiQP55fZNaGPd_GLXjtvnJes5_cbvNKCMRdPR1ixanC_ULPhLpi9kqCYHsks/s1600/11111111111111111111111111111434444.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="82" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDFC8Zp1X85ulqPLsTKIfhNr86EQP5GyuZpNJftvOHBAZSuTIUXcyEfZqwEfqBcQHoEatreevupPG7xgkyiQP55fZNaGPd_GLXjtvnJes5_cbvNKCMRdPR1ixanC_ULPhLpi9kqCYHsks/s320/11111111111111111111111111111434444.gif" width="320" /></span></a></div><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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</span></div><div><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Minor errors has been eliminated.</span></div></div><div><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">~Good Luck</span></div><div><br />
</div>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-5397687180886847722012-02-13T09:55:00.000-08:002012-02-13T09:56:43.092-08:00PSK: VDL-2 (VHF) - AirSystem, PSK-8, Br - 10500<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><b><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">VDL-2 (VHF)</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">AirSystem, PSK-8, Br - 10500</span></b></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Author:</b><span class="Apple-tab-span" style="white-space: pre;"> </span>SergUA6 </span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Band Width</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~17000 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Baud Rate</b><span class="Apple-tab-span" style="white-space: pre;"> </span>10500 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>n-Ary (PSK/MPSK)</b><span class="Apple-tab-span" style="white-space: pre;"> </span>PSK-8</span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>RX mode </b>source I/Q record</span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> </span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> <a href="http://signals.radioscanner.ru/base/files/signal262/f1.wav" target="_blank">Here is example of VDL-2. Sent by foregin collegues.</a></span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Sonograms:</span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.1 General view</span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgR_9yCrGUro8yU1S_6Johfl1pYO1CFckAT3tvbs5cg3VXJM5qbceLFZ2xFLSP7SJaY8NOXWFuusOgMAiXwcqwO6MiBrYx08rhuJs39JCrtXn1mx1967LZDiF4SgxcTi8IqgyAx__NQtFY/s1600/1111111111111111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="134" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgR_9yCrGUro8yU1S_6Johfl1pYO1CFckAT3tvbs5cg3VXJM5qbceLFZ2xFLSP7SJaY8NOXWFuusOgMAiXwcqwO6MiBrYx08rhuJs39JCrtXn1mx1967LZDiF4SgxcTi8IqgyAx__NQtFY/s320/1111111111111111111.gif" width="320" /></span></a></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.2 Manipulation speed</span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEQMKwcEX0lp10Hki9T5ovyfJ1Gyx5ccHJEueESKCj1DLGF3QKxCGlLGb_i4NPaFTRKiQLoaLKFMwl-iMTOlhyphenhyphenR37a6O6oeVaZFff2FkhtI-Bi8Nh7y4C3EAfwXl80H75JcKcCLOu2mrY/s1600/222222222222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="134" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEQMKwcEX0lp10Hki9T5ovyfJ1Gyx5ccHJEueESKCj1DLGF3QKxCGlLGb_i4NPaFTRKiQLoaLKFMwl-iMTOlhyphenhyphenR37a6O6oeVaZFff2FkhtI-Bi8Nh7y4C3EAfwXl80H75JcKcCLOu2mrY/s320/222222222222222222.gif" width="320" /></span></a></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Pictures</span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.3 Phase constellation</span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjaasqGWfWuM0rVTRb4dPX68L1YFlmmJWC5K8ZWYSHiHLJ8R6kT48BJ-2nCn9N1fT7LxMvhzC1jrUyK31uvghmuQPCEXhlzhw9dFyzlEz1phgh7G8_YqtjStNOx_KKls8Xe9ETmUSHs2yY/s1600/33333333333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="169" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjaasqGWfWuM0rVTRb4dPX68L1YFlmmJWC5K8ZWYSHiHLJ8R6kT48BJ-2nCn9N1fT7LxMvhzC1jrUyK31uvghmuQPCEXhlzhw9dFyzlEz1phgh7G8_YqtjStNOx_KKls8Xe9ETmUSHs2yY/s320/33333333333333.gif" width="320" /></span></a></div><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>VDL-2 </b>- It is rather new and the perspective view of aviation telecommunication (ATN). It is very actively introduced in practice. It is provided step-by-step change/move from the previous generation of similar system ACARS, to the new VDL-2, VDL-3. As well as in ACARS, data exchange between aircrafts and the earth occurs by extremely short packages. In average, lenght of the package is about 20-40 мс, but it can be both shorter and longer packages. In comparison with <b>ACARS</b>, the throughput of channel ATN in <b>VDL-2</b> is essentialy increased from 2400 bps (ACARS) to ~31500 bps.</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">As a whole, at appropriate quality, the signal is confidently enough analyzed and identified, there are no obvious features detected.</span><br />
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</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-5731116142029741972012-01-25T11:54:00.000-08:002012-01-25T11:54:58.832-08:00SA update to version v 6.2.6.5<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">SA update to version<a href="http://signals.radioscanner.ru/info/files/item1/sa_6265.rar" target="_blank"> v 6.2.6.5</a> </span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Planned update. </span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">In this update, possibility of resample and shift of the signals on fractional values of frequencies is added. </span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidkOq7g_hV618tXvGmmO0PZAuPVnmeHsUdw4Ky6vmO4o4VNlFpw0WiG8wjh8Wi6apdWZDx6wsj_NKrAMxrO-9MEtlDNDjbPxIpGfhb6G4k4bFkFSoR0pmoY1OCGkcCayxFKWbm45CV-JM/s1600/111111111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="162" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidkOq7g_hV618tXvGmmO0PZAuPVnmeHsUdw4Ky6vmO4o4VNlFpw0WiG8wjh8Wi6apdWZDx6wsj_NKrAMxrO-9MEtlDNDjbPxIpGfhb6G4k4bFkFSoR0pmoY1OCGkcCayxFKWbm45CV-JM/s320/111111111111.gif" width="320" /></span></a></div><div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Perhaps more important part of current updating, is the first stage of integration in SA calculator K. </span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrGJ_nKo11Wx-CoXbX232v19W0WUkZaeSsZ-oTO1Eq-ZcOs_1caLWB_RYq1D5QYOAU0oCr1ovI25BnRQ8sNcvMv2CZpYbOFenadZrMAwkkCule6qk7i5n-J3NtP5veEuHJRNhzGTlTSj0/s1600/222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="190" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrGJ_nKo11Wx-CoXbX232v19W0WUkZaeSsZ-oTO1Eq-ZcOs_1caLWB_RYq1D5QYOAU0oCr1ovI25BnRQ8sNcvMv2CZpYbOFenadZrMAwkkCule6qk7i5n-J3NtP5veEuHJRNhzGTlTSj0/s320/222222222.gif" width="320" /></span></a></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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</span></div><div class="separator" style="clear: both; text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The first stage doesn't mean the high-grade calculator. At this stage, in SA the mainframe of preliminary processing, so-called preprocessing is integrated. The primary goals of this block, gathering of primary parameters of the signal, and preliminary rough processing of this data. </span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhILUM1GlvdsmyELFaDiLAXJ8c5uYrGv6CXt_MOGHpe8Rd3OgEcpL44qCbqTMSpNkLQGmul3QsCmkptd_OfZt2eXg4nFIyUYEOdvF0xsPRnGWIrOiGfcx_FteJEh1nshuFdZJDg5jkd0bM/s1600/55555555.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="190" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhILUM1GlvdsmyELFaDiLAXJ8c5uYrGv6CXt_MOGHpe8Rd3OgEcpL44qCbqTMSpNkLQGmul3QsCmkptd_OfZt2eXg4nFIyUYEOdvF0xsPRnGWIrOiGfcx_FteJEh1nshuFdZJDg5jkd0bM/s320/55555555.gif" width="320" /></span></a></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiMnvLt-1EIo9tDY1cLnSkZy2pMspiEF51idSY49Ky4IhlRlLbqPbd8szAadsJy2iYCuVNBLAL07CFEU5kSy-7tXGl75x7W2alcBwZYi_YrmIyzHBvdv5EomLjrLPsaFO1yqWoCi2FeM08/s1600/33333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="173" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiMnvLt-1EIo9tDY1cLnSkZy2pMspiEF51idSY49Ky4IhlRlLbqPbd8szAadsJy2iYCuVNBLAL07CFEU5kSy-7tXGl75x7W2alcBwZYi_YrmIyzHBvdv5EomLjrLPsaFO1yqWoCi2FeM08/s320/33333333.gif" width="320" /></span></a></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjDTBVmFsRDBR1IFYwHGCC4RUdhHoFvqfsyqtZCh1qagm6wsOnFCQ7xNjY47VyRow1PeQ6gOIASAOnYgNm4i2c_Q4VPCx-Swd2lu8qE5PAuCRMSB1fKHmTUoEjQuhaM2n-4J57_giP2Ds/s1600/444444.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="190" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjDTBVmFsRDBR1IFYwHGCC4RUdhHoFvqfsyqtZCh1qagm6wsOnFCQ7xNjY47VyRow1PeQ6gOIASAOnYgNm4i2c_Q4VPCx-Swd2lu8qE5PAuCRMSB1fKHmTUoEjQuhaM2n-4J57_giP2Ds/s320/444444.gif" width="320" /></span></a></div><div style="text-align: left;"><br />
</div><div class="separator" style="clear: both; text-align: center;"></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> The list from the most probable values "Magic K" which detailed analysis will be spent in the second part of the calculator which integration is planned further will be result of work the pre-processing block. </span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Nevertheless, even in such, very strongly simplified kind, it is already possible to receive authentic enough values K on some signals. </span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">That is much better, than absolutely nothing.As work with the calculator means some knowledge of main principles of its action, and some specific skills, the article concerning calculator use in practice has been written. Also some separate moments and problems of getting authentic values K ==><a href="http://signals.radioscanner.ru/info/item284/" target="_blank"> Analysis OFDM with CP in SA versions 6.2.6.5 - a pre-processor of calculator K. </a></span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">As usual, in this version some minor errors found out by users SA are eliminated, and small changes are added in some modules and blocks. </span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Good luck~</span></div><div class="separator" style="clear: both; text-align: center;"></div><div style="text-align: left;"><br />
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</div>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-24345070035588464392012-01-10T07:49:00.000-08:002012-01-10T07:49:35.361-08:00FSK:PakNet - communication of data system (VHF)<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>PakNet - communication of data system (VHF)</b></span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Mode FM/GFSK, Br 8000</b></span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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</span></div><div class="separator" style="clear: both;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Author:</b><span class="Apple-tab-span" style="white-space: pre;"> </span>SergUA6 </span></div><div class="separator" style="clear: both;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Band Width</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~12 kHz</span></div><div class="separator" style="clear: both;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Baud Rate</b><span class="Apple-tab-span" style="white-space: pre;"> </span>8000 Hz</span></div><div class="separator" style="clear: both;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>ACF</b><span class="Apple-tab-span" style="white-space: pre;"> </span>108 and 27 ms</span></div><div class="separator" style="clear: both;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>RX mode</b><span class="Apple-tab-span" style="white-space: pre;"> </span>Source I/Q record</span></div><div class="separator" style="clear: both;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="http://signals.radioscanner.ru/base/files/signal261/f.wav" target="_blank"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The example of PakNet signal. sent by geka.</span></a></div><br />
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</span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i>Sonograms:</i></span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i>pic.1 General view (two radiochanneles)</i></span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><br />
</i></span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhtKP3MQco66_bNmHxawA8Vu7CcfiJm4NdsbPkjQ3KGRSAZBX0MA7R0aOTaohlZTzo4-iefyN_R0xQCk9LqWem8cy0kWxH0xt5FJCr9Rozp0tNww65FfM1LD-8QcrQgQ7bYOPcSNSjWNO0/s1600/picture_picblock_a_11111111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><img border="0" height="188" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhtKP3MQco66_bNmHxawA8Vu7CcfiJm4NdsbPkjQ3KGRSAZBX0MA7R0aOTaohlZTzo4-iefyN_R0xQCk9LqWem8cy0kWxH0xt5FJCr9Rozp0tNww65FfM1LD-8QcrQgQ7bYOPcSNSjWNO0/s320/picture_picblock_a_11111111111.gif" width="320" /></i></span></a></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><br />
</i></span></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i> pic.2 Manipulation speed</i></span></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><br />
</i></span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEipw8zOzlw4bSFAS665-90H5jKYVJWVQfGJLuMKdkj2kW1GoY_ooP-MAeK8ZkiliV7ZoCH4duBHB3MSDeZ6Eh8UJZZ8NN8o_f4CPv_-IkDSlOEdWwaG7yBY0CljfjPMKNlROFmzybBwYgk/s1600/22222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><img border="0" height="188" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEipw8zOzlw4bSFAS665-90H5jKYVJWVQfGJLuMKdkj2kW1GoY_ooP-MAeK8ZkiliV7ZoCH4duBHB3MSDeZ6Eh8UJZZ8NN8o_f4CPv_-IkDSlOEdWwaG7yBY0CljfjPMKNlROFmzybBwYgk/s320/22222222222.gif" width="320" /></i></span></a></div><div style="text-align: center;"><br />
</div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i>pic.3 Bit stream</i></span><br />
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</i></span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiA2tDT0uz7G4rsbxXQR3EXIo1zBk09FrZ92xsvYYuLUaydv8fKuCKOyIMRMPDqUoDyCIGisThoYO9ywKa12RuI7vIyLut6di0TcNQU3lhqHUyL0fG1wbUxb2pZIelsxNW5MA4XeYZ90_s/s1600/333333333333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><img border="0" height="188" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiA2tDT0uz7G4rsbxXQR3EXIo1zBk09FrZ92xsvYYuLUaydv8fKuCKOyIMRMPDqUoDyCIGisThoYO9ywKa12RuI7vIyLut6di0TcNQU3lhqHUyL0fG1wbUxb2pZIelsxNW5MA4XeYZ90_s/s320/333333333333333.gif" width="320" /></i></span></a></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><br />
</i></span></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i> Diagrams:</i></span></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i>pic.4 108 ms Period in VMW</i></span></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><br />
</i></span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmFh68pr1PbpXIjrVUYBjao9GD9ug5xBpSKvKq3gKppuoWe-cE8oT0SOKm-hL5PXEIgczSDAltcnGhAQwK9Ooi8kYfjn7EW052imaKmgB3J3GnFHVd0BHeXRMKQblKbLnZ6mmDZu5v0qc/s1600/4444444444.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><img border="0" height="134" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmFh68pr1PbpXIjrVUYBjao9GD9ug5xBpSKvKq3gKppuoWe-cE8oT0SOKm-hL5PXEIgczSDAltcnGhAQwK9Ooi8kYfjn7EW052imaKmgB3J3GnFHVd0BHeXRMKQblKbLnZ6mmDZu5v0qc/s320/4444444444.gif" width="320" /></i></span></a></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><br />
</i></span></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i>pic.5 27 ms Period in VMW</i></span></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><br />
</i></span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg_v9MVA_OijfYgoxnl5aRh93kD49u4LavY-hY9lP3ksQi3_3yvEfejfluQqOxeioQvqFrV7A0GP8M_9gz_hMJm-XlVdv9pBOJ0XUifuotSoavAzyqWWsTWHx2hpRJxH3JpaixMOaLmgcM/s1600/555555555555.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><img border="0" height="135" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg_v9MVA_OijfYgoxnl5aRh93kD49u4LavY-hY9lP3ksQi3_3yvEfejfluQqOxeioQvqFrV7A0GP8M_9gz_hMJm-XlVdv9pBOJ0XUifuotSoavAzyqWWsTWHx2hpRJxH3JpaixMOaLmgcM/s320/555555555555.gif" width="320" /></i></span></a></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><br />
</i></span></div><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i> pic.6 the signal's ACF</i></span></div><div class="separator" style="clear: both; text-align: center;"></div><div style="text-align: center;"><br />
</div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEikqGgjDEHAfa893FgrkNNzEh6BsvjNUqTTgC363teGkB_XimCELnYRCZs1JoZkdyGwZFQ42F4Ac7k8RbI_WjeOwJtEnW-bSJ_A_7eUN-waon7WWswAzUD1l9KA5yWuxHg_Lee5Fs1Xi3I/s1600/7777777777777.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><i><img border="0" height="162" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEikqGgjDEHAfa893FgrkNNzEh6BsvjNUqTTgC363teGkB_XimCELnYRCZs1JoZkdyGwZFQ42F4Ac7k8RbI_WjeOwJtEnW-bSJ_A_7eUN-waon7WWswAzUD1l9KA5yWuxHg_Lee5Fs1Xi3I/s320/7777777777777.gif" width="320" /></i></span></a></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>PakNet</b> - One of the oldest systems of documentary communication. It was founded in 1985-86 years. </span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">It is necessary to notice that within these years there was very intensive growth and development of various networks, such as Rosnet, Rospak, Sprint, Paknet etc. From that last abundance up to now days not many of them are still "alive" - PakNet one of the such. </span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The cable network of Russia concerns documentary networks, to the same category belongs PakNet, which is realized on qualitative another high level, than a cable network. </span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">In general PakNet, is not so much name of the protocol or a signal kind, but the name </span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">of the network.</span></div><div style="text-align: left;"><span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-32785408835389163372011-11-19T11:45:00.000-08:002011-11-19T11:50:56.913-08:00New article: "GMSK and OQPSK"<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">It's a small <a href="http://signals.radioscanner.ru/info/item281/">article</a>, which dealt with the problem of identifying GMSK and OQPSK.</span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">We hope this will be useful...</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">It's a small fragment...</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">OQPSK and GMSK are tightly connected, as well as SDPSK and CPFSK, as well as pi/4 DQPSK and C4FM.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Such "dualism" is spread enough, and connected/linked by the fact that often some modes of frequency shift keying at some conditions, smoothly flowing and/or aspire to acquire the shape of phase manipulation.</span><br />
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<b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">*** GMSK ***</span></b><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The general features of GMSK manipulation formation, we had already considered in the article <a href="http://signals.radioscanner.ru/info/item68/">FSK, GFSK, MSK, GMSK and some other modes</a> . Also it was marked, that application of the filter of the Gauss allows to narrow the main spectrum of a signal considerably.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The filter of the Gauss is characterized by parameter BT, interested ones can independently learn this subject, us interested in the practical for the analysis moments.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The value range of parameter BT lies within 1 > BT > 0 limits. The lesser BT value, the more compact spectrum at resultant signal GMSK.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">GMSK with the filter of the Gauss with BT = 1, is turning into classical MSK.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">For formation of GSM signals the filter of the Gauss with BT = 0.3 is standardly used, and on an example of the synthesized signals it is possible to look as it looks from positions of tasks of the analysis.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Some preliminary remarks.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">As, the finished result of concerning of GMSK nuances will be some conclusions about signal <a href="http://signals.radioscanner.ru/base/signal258/">TETRAPOL</a></span><br />
<div style="display: inline !important;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">, then the synthesized signals have the same speed of manipulation equal 8000 Hz.</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Besides, sometimes I will add a bit of white noise in the synthesized signals, because ideal signals though look beautifully, nevertheless, having absolute accuracy, in some cases these ideal signals conceal/hide the general details or make these details badly watched. This moment should be well clear from a picture below.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The full description <a href="http://signals.radioscanner.ru/info/item281/">here</a>.</span><br />
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</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-30809141202685069442011-11-06T10:25:00.000-08:002011-11-06T10:26:17.065-08:00SA update to version v 6.2.6.4: Visualization improvement.<div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">SA Update to version <a href="http://signals.radioscanner.ru/info/files/item1/sa_6264.rar">v 6.2.6.4.</a></span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The planned SA update.</span></b></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The error, which has been found out by users is fixed: At the opening of stereo files with wav tag, which differs from 1 and 3, the program was going into "deep dream". </span></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Also the displayment of the expanded information about the codec, which is applied in a current wav file is added. I specify, that it is not type of codec which the program supports it, it is the codec title, which is used in the current wav file. Sometimes it allows to communicate with suppliers of records/signals more in detail.</span></div><br />
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</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4U7MDMJpvLZI8UY3Ss-7IJIPTG7LctOrgX_h8NEKoALAIbboMEXK5UVLe7jU9Fb_mWKhFbcmpy-6AE3vGjj0KaXuJTlqEebUUWjXIETVz9dmMhrGBtSDCMwpyTcJugpTbfThiiJjq6yM/s1600/update_1.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4U7MDMJpvLZI8UY3Ss-7IJIPTG7LctOrgX_h8NEKoALAIbboMEXK5UVLe7jU9Fb_mWKhFbcmpy-6AE3vGjj0KaXuJTlqEebUUWjXIETVz9dmMhrGBtSDCMwpyTcJugpTbfThiiJjq6yM/s320/update_1.gif" width="320" /></span></a></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj1AN6DXDhiYz9PvEI9_ATUTLu3dQcCN4CYV_MKrgMUAZCMl9DNx4PrnvGGtmZPTCrig0ncZvEih9Ac6MlOGZSjUokUu_RRNp7B7g7gzP1_N_39t-TcPHJ2shj6TW98nsnZe-0BMk-_8MQ/s1600/update_2.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj1AN6DXDhiYz9PvEI9_ATUTLu3dQcCN4CYV_MKrgMUAZCMl9DNx4PrnvGGtmZPTCrig0ncZvEih9Ac6MlOGZSjUokUu_RRNp7B7g7gzP1_N_39t-TcPHJ2shj6TW98nsnZe-0BMk-_8MQ/s320/update_2.gif" width="287" /></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> </span><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj1AN6DXDhiYz9PvEI9_ATUTLu3dQcCN4CYV_MKrgMUAZCMl9DNx4PrnvGGtmZPTCrig0ncZvEih9Ac6MlOGZSjUokUu_RRNp7B7g7gzP1_N_39t-TcPHJ2shj6TW98nsnZe-0BMk-_8MQ/s1600/update_2.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"></span></a><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Visual displayment of the constellations and transitions in them is increased in </span><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">phase viewer , at least visually, the new format looks much more attractive than the </span><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">old. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Also, as always, the number of minor bugs is fixed.</span><br />
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</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-28425252340154484882011-11-05T07:59:00.000-07:002011-11-05T08:37:28.537-07:00PSK: TETRAPOL<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">TETRAPOL</span></b></div><div class="separator" style="clear: both;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The trunking system for VHF, Br - 8000, mode GMSK</span></b></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Author:</b><span class="Apple-tab-span" style="white-space: pre;"> </span>SergUA6 </span></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Band Width</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~9000-1000 Hz</span></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Baud Rate</b><span class="Apple-tab-span" style="white-space: pre;"> </span>8000 Hz</span></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>n-Ary (PSK/MPSK)</b><span class="Apple-tab-span" style="white-space: pre;"> </span>GMSK</span></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>ACF</b> <span class="Apple-tab-span" style="white-space: pre;"> </span>20 ms</span></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>RX mode </b><span class="Apple-tab-span" style="white-space: pre;"> </span>source I/Q record</span></div><div class="separator" style="clear: both; text-align: center;"><a href="http://www.blogger.com/goog_411078309"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></a></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><a href="http://signals.radioscanner.ru/base/files/signal258/f.wav">Perfect by the quality example of TETRAPOL. Sent by foregin collegues.</a></span></div><div class="separator" style="clear: both; text-align: left;"><br />
</div><div class="separator" style="clear: both; text-align: left;"><a href="http://signals.radioscanner.ru/base/files/signal258/f1.wav"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">An example of TETRAPOL (two channeles). Sent by foregin collegues.</span></a></div><div class="separator" style="clear: both;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Sonograms:</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.1 General view</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEica1tIZAUrJGsmO3UyLNBAF4sHGVohEEm_U6lc8syeOFyZjxT1DNjxXziEBLbaaGWCgAxwVn3fTN6R0Z1iyEytOFDEHBFUkmcatOEZpHH2OzmvoCxsvpNUirwgeGcCvLzYsUfT12g4aFw/s1600/%25D0%25BE%25D0%25B4%25D0%25B8%25D0%25BD.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="138" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEica1tIZAUrJGsmO3UyLNBAF4sHGVohEEm_U6lc8syeOFyZjxT1DNjxXziEBLbaaGWCgAxwVn3fTN6R0Z1iyEytOFDEHBFUkmcatOEZpHH2OzmvoCxsvpNUirwgeGcCvLzYsUfT12g4aFw/s320/%25D0%25BE%25D0%25B4%25D0%25B8%25D0%25BD.gif" width="320" /></span></a></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.2 Manipulation speed</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpnD685_VV_OQpQdr_RQacCAsf4DJ8flo4Q_LrTZHBjmQtwNjCeRqZlX5zyk0yrTHgvfzvR-llPopBUqFb6g1cN5xv06W4rrwVY7d6-dEUOGfAkQLTBfgZjrVqJlYzFREswDc-VjYOs_A/s1600/%25D0%25B4%25D0%25B2%25D0%25B0.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="140" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpnD685_VV_OQpQdr_RQacCAsf4DJ8flo4Q_LrTZHBjmQtwNjCeRqZlX5zyk0yrTHgvfzvR-llPopBUqFb6g1cN5xv06W4rrwVY7d6-dEUOGfAkQLTBfgZjrVqJlYzFREswDc-VjYOs_A/s320/%25D0%25B4%25D0%25B2%25D0%25B0.gif" width="320" /></span></a></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Diagrams:</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.3 The graphical spectrum</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvbqgyRRPY-9uCY0ooYilXxGEdWynvqQcmCNRj0Gh74S8JCVZgLEq9VVF4HJCp5R7md0_U6usT507Yooil3MtU6eJ1tN75S_-4zXvvss9Wpvu3LZvmmeqyEvg5Yf3PWBBdzlyGclfUZYs/s1600/%25D1%2582%25D1%2580%25D0%25B8.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="170" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvbqgyRRPY-9uCY0ooYilXxGEdWynvqQcmCNRj0Gh74S8JCVZgLEq9VVF4HJCp5R7md0_U6usT507Yooil3MtU6eJ1tN75S_-4zXvvss9Wpvu3LZvmmeqyEvg5Yf3PWBBdzlyGclfUZYs/s320/%25D1%2582%25D1%2580%25D0%25B8.gif" width="320" /></span></a></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.4 Allocation of the channeles</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgx1KlfABwviKttAwfQodPmvdjmSuVdP_cH2V6KDg7VFJssRIyyF06LAdpYWXWSUzfbUoZjZVFItlw_kg7dC_KrwaqV70CFCS3mY0dSzUw229YtXa8BoWswGJFkbXxDOwRDpyLGJ4KfUHw/s1600/%25D1%2587%25D0%25B5%25D1%2582%25D1%258B%25D1%2580%25D0%25B5.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="170" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgx1KlfABwviKttAwfQodPmvdjmSuVdP_cH2V6KDg7VFJssRIyyF06LAdpYWXWSUzfbUoZjZVFItlw_kg7dC_KrwaqV70CFCS3mY0dSzUw229YtXa8BoWswGJFkbXxDOwRDpyLGJ4KfUHw/s320/%25D1%2587%25D0%25B5%25D1%2582%25D1%258B%25D1%2580%25D0%25B5.gif" width="320" /></span></a></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> Pictures:</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic. 5 Phase constellation</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4t6TakaNJWCtULyLZTYImUh-65BOqYEnCGiB5Gb-WRz5EFX4Kxi9dp8iaiU9xfPVUYdyt2DwpR2YGiWhJiAh_NfeX_qg_IpSgeuc2qpQa9oEVjwDjEYawGaFMjoOdHU2RRW8MuBA1Y2w/s1600/%25D0%25BF%25D1%258F%25D1%2582%25D1%258C.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="170" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4t6TakaNJWCtULyLZTYImUh-65BOqYEnCGiB5Gb-WRz5EFX4Kxi9dp8iaiU9xfPVUYdyt2DwpR2YGiWhJiAh_NfeX_qg_IpSgeuc2qpQa9oEVjwDjEYawGaFMjoOdHU2RRW8MuBA1Y2w/s320/%25D0%25BF%25D1%258F%25D1%2582%25D1%258C.gif" width="320" /></span></a></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> pic.6 Transitions in the constellation</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhV9WoMlVewtYzCpVeIB473CSslmFmqptjmc5bnOnzt5gcLkFLrrkrpROa3T5B8MDlsO0HtzXiE6jkGVBxbG9wdCK0tCuxz3mza03JjWIXNsAH-jjTKUd42hW_MH1Jv7nyppnazLABz3IY/s1600/%25D1%2588%25D0%25B5%25D1%2581%25D1%2582%25D1%258C.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="170" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhV9WoMlVewtYzCpVeIB473CSslmFmqptjmc5bnOnzt5gcLkFLrrkrpROa3T5B8MDlsO0HtzXiE6jkGVBxbG9wdCK0tCuxz3mza03JjWIXNsAH-jjTKUd42hW_MH1Jv7nyppnazLABz3IY/s320/%25D1%2588%25D0%25B5%25D1%2581%25D1%2582%25D1%258C.gif" width="320" /></span></a></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.7 The signal's ACF</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEggcLj8HHdToit1W8daOp7r0jgDLFpA_nTUCoycAmhf_X-_CGPZgA8uLuv0do2TRYrMxcWqQxMT43bkhMWMMT0LGDQcDeoXKmLd5YpCyBo931tHUwSrYmRlBguJHTEX0NnfW97cmEayWzk/s1600/%25D1%2581%25D0%25B5%25D0%25BC%25D1%258C.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="238" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEggcLj8HHdToit1W8daOp7r0jgDLFpA_nTUCoycAmhf_X-_CGPZgA8uLuv0do2TRYrMxcWqQxMT43bkhMWMMT0LGDQcDeoXKmLd5YpCyBo931tHUwSrYmRlBguJHTEX0NnfW97cmEayWzk/s320/%25D1%2581%25D0%25B5%25D0%25BC%25D1%258C.gif" width="320" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<b style="font-family: Arial, Helvetica, sans-serif; font-size: x-large;">TETRAPOL</b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> - an old enough system of digital trunking communication/connection, which had gotten wide enough spreading. The standard is developed in the mid-eighties the last century. Usage of GMSK modulation with the shaping/forming filter of the Gauss with</span><b style="font-family: Arial, Helvetica, sans-serif; font-size: x-large;"> BT</b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> = 0.25 is very interesting. I Will remind, GSM uses the filter of the Gauss with </span><b style="font-family: Arial, Helvetica, sans-serif; font-size: x-large;">BT</b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> = 0.3 and has compact enough spectrum, reduction of this parameter allows to narrow further the spectrum, but as a whole, it does already noticeably reduce interference immunity or restricts/reduces the zone of confident communication. It Was unexpected enough to find out, that on the signals sent by foreign colleagues </span><b style="font-family: Arial, Helvetica, sans-serif; font-size: x-large;">BT</b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> is even less than 0.25, that even more worses interference immunity.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Nevertheless, in TETRAPOL standard it is marked, that it is possible use both channeles as with band 12.5 kHz (most likely it is with BT = 0.25), so in case of need, with a band 10 kHz, and it already implies smaller </span><b style="font-family: Arial, Helvetica, sans-serif; font-size: x-large;">BT</b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> values.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Considering that the standard isn't oriented on commercial networks, and intended for the organization of communication services of public safety, then some lowering of a confident cover zone isn't serious lack according to the developers opinion.</span><br />
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</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-81798164214267049052011-10-16T16:42:00.000-07:002011-10-16T16:53:30.291-07:00CROWD-36 (SERDOLIK) - OFDM mode<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">CROWD-36(SERDOLIK) - OFDM mode</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Ch-34, Br-40, Sh-40, PSK-4, The OFDM without CP</span></b></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Author:<span class="Apple-tab-span" style="white-space: pre;"> </span>SergUA6 </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Band Width<span class="Apple-tab-span" style="white-space: pre;"> </span>~1400 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Baud Rate<span class="Apple-tab-span" style="white-space: pre;"> </span>40 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">n-Ary (PSK/MPSK)<span class="Apple-tab-span" style="white-space: pre;"> </span>PSK-4</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Count of Carriers<span class="Apple-tab-span" style="white-space: pre;"> </span>34</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Step between carriers<span class="Apple-tab-span" style="white-space: pre;"> </span>40 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Pilot tone(s)<span class="Apple-tab-span" style="white-space: pre;"> </span>393 Hz, this tone or pilot, or continue transmit data of zero in PSK-4 mode</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">RX mode<span class="Apple-tab-span" style="white-space: pre;"> </span>SSB</span></div><div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div><a href="http://signals.radioscanner.ru/base/files/signal123/f.wav"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The example of CROWD-36 (SERDOLIK) OFDM MODE</span></a></div><br />
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</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Sonograms:</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.1 General view</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjom4SAXYNPJwWpHl-yny3xtFyA45YjEHdIMoscvpO2Q-I-jTzPLbiIug0S1eUMxq3XPZPAHbKHAF8B0fkt5Ob5cFXIo2Qlw9QGy1dEi_arm2wFn_Xjk1oKt0xskak9FFLz0aV_2-VZuYI/s1600/11111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="151px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjom4SAXYNPJwWpHl-yny3xtFyA45YjEHdIMoscvpO2Q-I-jTzPLbiIug0S1eUMxq3XPZPAHbKHAF8B0fkt5Ob5cFXIo2Qlw9QGy1dEi_arm2wFn_Xjk1oKt0xskak9FFLz0aV_2-VZuYI/s320/11111.gif" width="320px" /></span></a></div><div style="text-align: center;"><br />
</div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.2 Manipulation speed</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiARA-B0KlCCg9VhhPnrtvnTiLosNuYwcHnaAo_YD2NsEzVyvvikKnf4WQ-tMt3QOi5I5KYi8MMdkvPGYDR2pCfgdqhDiF7HVn7Ustlb6IThNXNHr7zJHk8KvErR4ARerGnxcHiiRczrsU/s1600/2222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="131px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiARA-B0KlCCg9VhhPnrtvnTiLosNuYwcHnaAo_YD2NsEzVyvvikKnf4WQ-tMt3QOi5I5KYi8MMdkvPGYDR2pCfgdqhDiF7HVn7Ustlb6IThNXNHr7zJHk8KvErR4ARerGnxcHiiRczrsU/s320/2222222.gif" width="320px" /></span></a></div><br />
<div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.3 Detalization of the second channel</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEip7s4vKHrbwnn-JplZYpx_iWy8V17skAQK6ohv91wnFQv3RAvpesflzwPMr5vwQy-I6UzmOEC8AB7piA62_YjvDgH6jIY5BOf_yLqR7TUEbNP8cXANFkSOVIRi0qfcnWfL47T2hEFmD7s/s1600/33333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="152px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEip7s4vKHrbwnn-JplZYpx_iWy8V17skAQK6ohv91wnFQv3RAvpesflzwPMr5vwQy-I6UzmOEC8AB7piA62_YjvDgH6jIY5BOf_yLqR7TUEbNP8cXANFkSOVIRi0qfcnWfL47T2hEFmD7s/s320/33333333.gif" width="320px" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> Diagrams:</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.4 The first channel in the fourth degree</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjM5VdzstpAD31W2zBqlff_5e8TEtHpkZtUBy8OuKXWuoE_jWZKBBJEUEn9jV5xxkEJy9iRifx_BfuaCwoLhF-JhYvBRGbp5WmmDymo0ghcM9V0s0l0FMZXAtAQmLMjLZr-S4ns-jBCfqo/s1600/4444444.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="174px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjM5VdzstpAD31W2zBqlff_5e8TEtHpkZtUBy8OuKXWuoE_jWZKBBJEUEn9jV5xxkEJy9iRifx_BfuaCwoLhF-JhYvBRGbp5WmmDymo0ghcM9V0s0l0FMZXAtAQmLMjLZr-S4ns-jBCfqo/s320/4444444.gif" width="320px" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> pic.5 Constellation of the first channel</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9fNcNLWM3fYTQ3vhfx2EDq9YMFw1ORrIDxdZbAn0SjBdeyBizAN8pW0FNu_e3WdazOLCry0C_JW6KX5tCj2UkzJWMH_xbwa1fjlBP-1uvV9Vn_WCNVpoVaFGIghY_KmACK-qyGorhfqE/s1600/555555555.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="170px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9fNcNLWM3fYTQ3vhfx2EDq9YMFw1ORrIDxdZbAn0SjBdeyBizAN8pW0FNu_e3WdazOLCry0C_JW6KX5tCj2UkzJWMH_xbwa1fjlBP-1uvV9Vn_WCNVpoVaFGIghY_KmACK-qyGorhfqE/s320/555555555.gif" width="320px" /></span></a></div><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>CROWD-36 (SERDOLIK) - OFDM mode</b> - is curious enough signal, where the principles of OFDM technologies usage for formation of a various type of manipulations/modulations are perfectly shown. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">MFSK and OFDM segments are generated/formed absolutely equally, the difference is only in the form of used modulation, besides this OFDM signal has no cyclical prefix. Speed of manipulation is precisely equal to frequency space (step between frequencies) - that is the big rarity, and it is possibly linked with the fact, that initial synchronization is provided on the operation stage in MFSK a mode. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The presence of pilot-tone or the continuous transmission of zero in PSK-4 mode is viewed In the second channel of OFDM segment, alghough i can't say definitely.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Though OFDM signals without CP are very difficult for the analysis, in this record it is even possible to define a manipulation mode in the first (lower) channel thus this channel is rather easily possible to select/mark this channel confidently enough, thanking presence of the pilot-tone in the second channel. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Absence of the prefix allows to use as much as possible densely all the spectrum, with the maximum real speed that in this signal makes 34*40*2=2720 bps. If the second channel is really the pilot, then the maximum technical speed is slightly less - 2640 bps.</span><br />
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</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-20410012672055781982011-10-16T16:21:00.000-07:002011-10-16T16:33:57.926-07:00MFSK: CROWD-36 (SERDOLIK)<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">CROWD-36(SERDOLIK)</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">MFSK-34, Br-40, Sh-40, Ch-34</span></b></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Author:<span class="Apple-tab-span" style="white-space: pre;"> </span>SergUA6 </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Band Width<span class="Apple-tab-span" style="white-space: pre;"> </span>~1400 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Baud Rate<span class="Apple-tab-span" style="white-space: pre;"> </span>40 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Count of Carriers<span class="Apple-tab-span" style="white-space: pre;"> </span>34 manipulation frequency</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Step between carriers<span class="Apple-tab-span" style="white-space: pre;"> </span>40 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">RX mode<span class="Apple-tab-span" style="white-space: pre;"> </span>SSB</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="http://signals.radioscanner.ru/base/files/signal36/f.wav"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">An excellent example of CROWD36 (SERDOLIK) MFSK. Send by Ware.</span></a></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Sonograms:</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.1 General view at the different spectrum resolution.</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-ZD10yh_Vgk6Cj3beNlCkdDRF_YzfTtE6O095ivBTviuN6BMmNXnGFKE9RAhK9mJJsNNwz9fyghJnZM2v0IzNg9dMoWRj00uRiHCgJsQ5LinjsFW-uv3Cb1KnRMU24uM-aentYI46x-Q/s1600/mfsk11.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="205px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-ZD10yh_Vgk6Cj3beNlCkdDRF_YzfTtE6O095ivBTviuN6BMmNXnGFKE9RAhK9mJJsNNwz9fyghJnZM2v0IzNg9dMoWRj00uRiHCgJsQ5LinjsFW-uv3Cb1KnRMU24uM-aentYI46x-Q/s320/mfsk11.gif" width="320px" /></span></a></div><br />
<div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.2 Manipulation speed</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi33RWF6UPM7PmmBeZmYOUH8hcxlLtM4n0P5pdWvCUj37SrzTkYK-HQin9dZFbEUU8gn3dCEmL_RjMxctwW948N5BD43ASAX44P7K7U7cpV4lS5nJaOn2ZDr5Oj4aSXJkNAXtOe1JiGX9k/s1600/mfsk22.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="154px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi33RWF6UPM7PmmBeZmYOUH8hcxlLtM4n0P5pdWvCUj37SrzTkYK-HQin9dZFbEUU8gn3dCEmL_RjMxctwW948N5BD43ASAX44P7K7U7cpV4lS5nJaOn2ZDr5Oj4aSXJkNAXtOe1JiGX9k/s320/mfsk22.gif" width="320px" /></span></a></div><br />
<div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Diagrams:</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.3 Allocation and quantity of the frequencies</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgWl1JU2XZ1Ahqj8J88f8-AZ4T9kFK3-bRV0bilQDZ0ec_KG6d6iZCpl5ceFX39D5VUi4Y_n9fW79TlSTP7ja7tifkFI1ajJy7S1RlcKJNcz2ue3msEV2O96kTsCdCdc8M6h0RL3R-TAkY/s1600/ÑаÑл33.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="196px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgWl1JU2XZ1Ahqj8J88f8-AZ4T9kFK3-bRV0bilQDZ0ec_KG6d6iZCpl5ceFX39D5VUi4Y_n9fW79TlSTP7ja7tifkFI1ajJy7S1RlcKJNcz2ue3msEV2O96kTsCdCdc8M6h0RL3R-TAkY/s320/%25D1%258C%25D0%25B0%25D1%258B%25D0%25BB33.gif" width="320px" /></span></a></div><div style="text-align: center;"><br />
</div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.4 demodulation in SA</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh3bhNFvp6diZDmRr02fZxSnIrjThxS7EGPYC23AQmkFOkm0IPzwXh7FUmTOjZ6cBBV4ZFarrvkdTcRbSqDxJGM4A3H0F_bG8JL6xbB40NLURhWaX0B-ktSUolrsoRf-4aUqduql7fjZFI/s1600/ÑÑаÑл44.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="186px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh3bhNFvp6diZDmRr02fZxSnIrjThxS7EGPYC23AQmkFOkm0IPzwXh7FUmTOjZ6cBBV4ZFarrvkdTcRbSqDxJGM4A3H0F_bG8JL6xbB40NLURhWaX0B-ktSUolrsoRf-4aUqduql7fjZFI/s320/%25D1%258C%25D1%258B%25D0%25B0%25D1%258B%25D0%25BB44.gif" width="320px" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>CROWD-36(SERDOLIK) MFSK </b>From the different sources, it is used by various diplomatic services of the CIS countries, Russia is defined in general easily enough. Spacing is 40, speed 40, frequencies 34.Alghough it is necessary to manage to count the frequencies, because to do it on the spectrum it not so that easy. ;) The number "36" in the name of the signal is the mystery for me. I haven't ever seen 36 frequencies, so I may suppose that 36 frequencies are very seldom used or quantity of frequencies does not play a role in the name of the signal. </span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Speed of manipulation in chat-mode makes 10 hertz. <a href="http://signals.radioscanner.ru/signal39/">Mazielka 2 tone</a> and it is possible </span><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><a href="http://signals.radioscanner.ru/signal41/">Mazielka 6 tones</a> are Very closely connected with Crowd-36.</span><br />
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</div>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-4550877520122830782011-10-07T12:20:00.000-07:002011-10-07T12:54:22.521-07:00OFDM, COFDM: DRM+ (DRM-E)<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">DRM+ (DRM-E)</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Ch - 213, PSK-4, Br - 400 Hz, Sh - 444.4(4) Hz, k = 1/9</span></b></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Author:</b><span class="Apple-tab-span" style="white-space: pre;"> </span>SergUA6 </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Band Width</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~95500 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Baud Rate</b><span class="Apple-tab-span" style="white-space: pre;"> </span>400 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>n-Ary (PSK/MPSK)</b><span class="Apple-tab-span" style="white-space: pre;"> </span>PSK-4</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Count of Carriers</b><span class="Apple-tab-span" style="white-space: pre;"> </span>213</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Step between carriers</b><span class="Apple-tab-span" style="white-space: pre;"> </span>444.4(4) Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>ACF</b><span class="Apple-tab-span" style="white-space: pre;"> </span> 100 ms</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>RX mode </b><span class="Apple-tab-span" style="white-space: pre;"></span>Source I/Q record</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="http://signals.radioscanner.ru/base/files/signal257/drm_e.wav"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The excellent example of DRM+. Thanks to IK1YDE.</span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Sonograms:</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.1 General view</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjiJKWxZ14JcNZ-r5C6EwyGaiFSQPCE8vJqeT93u6dxRX3ufaL5uak801QCQWuRFZxZ3aTWXo1VTeVIR9oExgkVyehKaI21pFEhS2C2IAaKq2-LOol4nisCJ9dRMp8PSomK2g-jCgmL0Rc/s1600/111111111111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="169px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjiJKWxZ14JcNZ-r5C6EwyGaiFSQPCE8vJqeT93u6dxRX3ufaL5uak801QCQWuRFZxZ3aTWXo1VTeVIR9oExgkVyehKaI21pFEhS2C2IAaKq2-LOol4nisCJ9dRMp8PSomK2g-jCgmL0Rc/s320/111111111111111.gif" width="320px" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.2 The main signal's parameters.</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbw1jjdQfMaHNEFTjShcT5okQYEcySHBO-ESleSdPovdoD9mThEcKQJx77LglakYqDfhP0v33fbo4QoGm7wnH5XTeb-nrmxsRwKhwQvvks3dYG7Zs9vkKTwB8jf3ttIHCN4Zho-2TYZZQ/s1600/22222222222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="173px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbw1jjdQfMaHNEFTjShcT5okQYEcySHBO-ESleSdPovdoD9mThEcKQJx77LglakYqDfhP0v33fbo4QoGm7wnH5XTeb-nrmxsRwKhwQvvks3dYG7Zs9vkKTwB8jf3ttIHCN4Zho-2TYZZQ/s320/22222222222222222.gif" width="320px" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Diagrams:</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.3 The constellation in the channel</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiY-_PrSDcarXlkWwLwvOwKqdRED_m7ooEyj_VGzuxc1GLT01TbMPe-ei8rvXnMbUMbez8BQ1NjgxpMHjGz6lHqe49dvhjwNdU6vWh7M0XkHdBtliKwX46EZywbdNmHCvRBG7HnztDhTpI/s1600/3333333333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="172px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiY-_PrSDcarXlkWwLwvOwKqdRED_m7ooEyj_VGzuxc1GLT01TbMPe-ei8rvXnMbUMbez8BQ1NjgxpMHjGz6lHqe49dvhjwNdU6vWh7M0XkHdBtliKwX46EZywbdNmHCvRBG7HnztDhTpI/s320/3333333333333.gif" width="320px" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.4 Detalization</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlq5KfUinpRV3lwk6pLeTGpncEWC4jlg4SHLIwFYTxnujF8V_9IzQ1oEw9qCTO-rz8GqnVbZzrg1sf3TOMYWMYt6T_3boC1HKckDC-Ta19aLt9JgcP1AN_QkPm5PZZAtMMQ1B4vl25gro/s1600/4444444444444.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="172px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlq5KfUinpRV3lwk6pLeTGpncEWC4jlg4SHLIwFYTxnujF8V_9IzQ1oEw9qCTO-rz8GqnVbZzrg1sf3TOMYWMYt6T_3boC1HKckDC-Ta19aLt9JgcP1AN_QkPm5PZZAtMMQ1B4vl25gro/s320/4444444444444.gif" width="320px" /></span></a></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Pictures:</span></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.5 ACF of the signal.</span></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0gDkT-2T8nYKdVCiB-pecCtNBMtabwR6UM8MtCVRY7PTtb8dD846AXPZwBYqyvcjoYEktt0ljWniFx65zQq9xY6-32UMEZYRMvlhTAgPnfTZ38Kpam1ewK6N255j1Su_WiBTBRCcyKF8/s1600/55555555555555.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="136px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0gDkT-2T8nYKdVCiB-pecCtNBMtabwR6UM8MtCVRY7PTtb8dD846AXPZwBYqyvcjoYEktt0ljWniFx65zQq9xY6-32UMEZYRMvlhTAgPnfTZ38Kpam1ewK6N255j1Su_WiBTBRCcyKF8/s320/55555555555555.gif" width="320px" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>DRM+(DRM-E)</b> - DRM format for VHF broadcasting, it is intended to extrude the analogue decisions in this sphere. It posseses range of attractive advantages: the necessary band is about 95-96 kHz on the broadcast channel, the transmission till 4 of independed programs is possible in one channel.</span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The signal itself is the typical representative of OFDM tecnology. All the parameters are defined in SA easyly enough. The maximum technical speed for PSK-4 and 213 channeles is 170 kbit/sec. In reality, the real speed of data transmission is a bit lower (about 130-150 kbit/sec), at the expencse of usage of part of the channels and symbols as the pilot/service.</span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">As far as i know, the prespective of this standard in Russia are *foggy* enough, this record sent by collegues from Europe.</span><br />
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</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-19960118964853737352011-09-30T12:24:00.000-07:002011-10-01T07:03:22.035-07:00SA update to versionv 6.2.6.3<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">SA update to version<a href="http://signals.radioscanner.ru/info/files/item1/sa_6263.rar"> v 6.2.6.3 </a></span></b></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">This is the planned SA update.</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">In <a href="http://signals.radioscanner.ru/info/files/item1/sa_6263.rar">this version</a> support of Drag-and-Drop function is added.</span></div><br />
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</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiH5DIhhmif5JQVdyqCzVBxD5BWVRn_fPYeQH9w22YS5T2glK6WhcWbMfjnEUj0pMNj1Oxethe9F65V9L5kuBv1dkir71H7pW2bQAz9z1wXBs_abMKJrsUhvN9Jj9cId9VlHZV-CkPpcEU/s1600/111111111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="260px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiH5DIhhmif5JQVdyqCzVBxD5BWVRn_fPYeQH9w22YS5T2glK6WhcWbMfjnEUj0pMNj1Oxethe9F65V9L5kuBv1dkir71H7pW2bQAz9z1wXBs_abMKJrsUhvN9Jj9cId9VlHZV-CkPpcEU/s320/111111111111.gif" width="320px" /></span></a></div><br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiCijOYilxFO7h-zt9wr8YJcmLAFfgmDmyqw4_q-j9mFs2mWOpu6CebDgAti7hDd02-zvIXBh2Ht_lwParF1uB7ydPT478xbqTGZv2r9XezOGU75ahED0UOD6L5uBFH-SBxzq5kWRksZSo/s1600/2222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="222px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiCijOYilxFO7h-zt9wr8YJcmLAFfgmDmyqw4_q-j9mFs2mWOpu6CebDgAti7hDd02-zvIXBh2Ht_lwParF1uB7ydPT478xbqTGZv2r9XezOGU75ahED0UOD6L5uBFH-SBxzq5kWRksZSo/s320/2222222222.gif" width="320px" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The function of detection/determinition of the offset modes of the phase manipulation is introduced in the Phase viewer. </span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjg0vRTHhzybQpl_fbtEby4jCdke-xJwuhZxjo2BgxgXXSSSOGTHMmpF9mN9L_0ra6PScbFHOR3R9D33w90bxr-Blxq2AfbPeRYDthxxxRwqNPTvJtd5wshm0fyDUbx-2BzhTLSh8W_kyI/s1600/33333333333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="208px" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjg0vRTHhzybQpl_fbtEby4jCdke-xJwuhZxjo2BgxgXXSSSOGTHMmpF9mN9L_0ra6PScbFHOR3R9D33w90bxr-Blxq2AfbPeRYDthxxxRwqNPTvJtd5wshm0fyDUbx-2BzhTLSh8W_kyI/s320/33333333333333.gif" width="320px" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">It is necessary to show certain care, as any automatic system of identification, this function can be mistaken, especially on the signals, which are damaged by various distortions. Nevertheless in some cases, the presence of this automatization is justified. </span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Also a number of minor errors found out by users is corrected.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">~ Good Luck</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-42734865142013825202011-09-24T08:18:00.000-07:002011-09-24T11:12:29.917-07:00Scrambler: Hagelin HC-256, HF<div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div style="font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><b>Hagelin HC-256, HF</b><br />
<b>Analogue dynamical synchronized scrambler.</b></span></div><div style="font-family: Arial,Helvetica,sans-serif; text-align: center;"></div><div style="font-family: Arial,Helvetica,sans-serif; text-align: left;"><span style="font-size: large;"><b>Author</b>: SergUA6 <br />
<b>Band Width </b>~3000 Hz <br />
<b>Low Range</b> ~300 Hz <br />
<b>RX mode</b> SSB <br />
<b> </b></span></div><div style="font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="http://signals.radioscanner.ru/base/files/signal157/f.wav">The signal is here. Send by Angstrem.</a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><b>Sonorgam</b></span></div><div style="font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><b>pic.1</b></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><br />
</span></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjTtQQXANBkceEU_s6cshyphenhyphenwTVvyr68eN55uL8czZUj7YA5IO2V5wIQA9P-TNSCDnSqIJ5pk_njuDl5bc3gAzp1t2uB2Npl0DX9XcJW60tR25iL1JGiJmyGlAOeKdc0WW3flPYyKZVFfk6s/s1600/picture_picblock_a_1.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="114" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjTtQQXANBkceEU_s6cshyphenhyphenwTVvyr68eN55uL8czZUj7YA5IO2V5wIQA9P-TNSCDnSqIJ5pk_njuDl5bc3gAzp1t2uB2Npl0DX9XcJW60tR25iL1JGiJmyGlAOeKdc0WW3flPYyKZVFfk6s/s320/picture_picblock_a_1.gif" width="320" /></a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><br />
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</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><b>HAGELIN HC-256, HF</b> - the analogue dynamical synchronized scramler. It sounds like "Pinocchio" :-). <br />
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The features of this signal: the preamble is the same as two-channeles FSK-2 with the parameters ( look pic.1). There are short synchro-bursts also every ~400 ms (look pic.1). </span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><br />
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</span></div>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-25573559938333647962011-08-22T13:08:00.000-07:002011-08-22T13:08:03.964-07:00Update SA to version 6.2.6.0<div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">Update SA to version <a href="http://signals.radioscanner.ru/info/files/item1/sa_6260.rar">6.2.6.0</a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">This is planned update SA.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">Added possibility insert the saved path to the file/directory. This is really handy because sometimes a very long way, and clicking on directories rather tedious, easier to insert from the clipboard. </span></div><div style="font-family: Arial,Helvetica,sans-serif;"></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmmrDgIuDandi7Uo1wZy85oXJeC0zziAjjxAgPRj6gog7bn_1fNswfkIHgeX13YB1SCo-VlLp_xxbx0xp6hCYYPUJKe2SMC6Zayr6WnttyaZmNLsUVVdWBef8KodNPF1yDMRJlo4BdQ_E/s1600/a.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="210" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmmrDgIuDandi7Uo1wZy85oXJeC0zziAjjxAgPRj6gog7bn_1fNswfkIHgeX13YB1SCo-VlLp_xxbx0xp6hCYYPUJKe2SMC6Zayr6WnttyaZmNLsUVVdWBef8KodNPF1yDMRJlo4BdQ_E/s320/a.gif" width="320" /></a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">Added the possibility of fast increase in the desired part of the signal in the WF module. Fragment between V-markers scaled over the entire window. </span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgaBsng54qgWOWAah42LNPS1VdHUFgANBALLrgf9HJ05ZAGjaMr84EuZFyolBLa2YqkloNBk5xr84wRKTkABH5k6Acg6pNap1yAaIzYY3P5J9ocZizsBJ7cgfCXRjBslaObaQyOfllqrpU/s1600/c.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="252" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgaBsng54qgWOWAah42LNPS1VdHUFgANBALLrgf9HJ05ZAGjaMr84EuZFyolBLa2YqkloNBk5xr84wRKTkABH5k6Acg6pNap1yAaIzYY3P5J9ocZizsBJ7cgfCXRjBslaObaQyOfllqrpU/s320/c.gif" width="320" /></a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">Function of oversampling uses parallel computing, in general, it increases the speed and quality. </span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"> </span></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgfHdAFvtj_mb_ih6HvKUTjS_OPHn4hA6jX4cbkwL71QDoWV_Yx2mrOVPNTY6IuuqhzUyvUoU17p2P2ssuBIS2eXFHWXZ0N2mQ9gnDJS85Jxm5J_H4z02UoJcfQ35h3OLISw8oKPq1LOQ/s1600/b.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="134" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgfHdAFvtj_mb_ih6HvKUTjS_OPHn4hA6jX4cbkwL71QDoWV_Yx2mrOVPNTY6IuuqhzUyvUoU17p2P2ssuBIS2eXFHWXZ0N2mQ9gnDJS85Jxm5J_H4z02UoJcfQ35h3OLISw8oKPq1LOQ/s320/b.gif" width="320" /></a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">Quality resampling improved by revising the algorithm and its optimization.<br />
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The examples old and current solutions.</span> <span style="font-size: large;"><br />
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</div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQa00sBxM2oCEWZTCYmNmUJYVW_Sj2O0-PC46ISP2-LC_yMLXi-tdhb-EgEbTbJI6U7mqs5XL_eioCkMUSJZNHcDSMncztki3B7_S4ZRMDEWKoAAgJuxtxQbdgA7MF1xZFLKZLrjIHMxk/s1600/d.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="197" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQa00sBxM2oCEWZTCYmNmUJYVW_Sj2O0-PC46ISP2-LC_yMLXi-tdhb-EgEbTbJI6U7mqs5XL_eioCkMUSJZNHcDSMncztki3B7_S4ZRMDEWKoAAgJuxtxQbdgA7MF1xZFLKZLrjIHMxk/s320/d.gif" width="320" /></a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">Extreme caution should be taken with to any external processing program. As minimum all need thorough inspection and testing, otherwise You may experience various unpleasant incidents, such as this one. </span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhgs6gbCA1R9Kr7I70p4hvgF5wLfQbExeBLsAu30IieTsA9CcV3YfP93AmwshMw6qwPMbRheiZ-ja47I9LxefUtbPj4gldR1pU4fA6JbwN-MghHpu4VEPKHq5F_svSg3R8gVhEy-lDIypM/s1600/e.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="169" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhgs6gbCA1R9Kr7I70p4hvgF5wLfQbExeBLsAu30IieTsA9CcV3YfP93AmwshMw6qwPMbRheiZ-ja47I9LxefUtbPj4gldR1pU4fA6JbwN-MghHpu4VEPKHq5F_svSg3R8gVhEy-lDIypM/s320/e.gif" width="320" /></a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">SA provides accuracy of 1 Hz resampling at sampling rates up to 100 MHz. <br />
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In fact, precision in 1 Hz is not a fundamental limitation, and the internal procedures of SA uses precision oversampling in fractional values SR, if needs.</span> </div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">In the OFDM module, function of "Find CT" also uses parallel computing.<br />
</span></div><span style="font-size: large;"><span style="font-family: Arial,Helvetica,sans-serif;">As well as the usual fixed various minor problems.</span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;">Good Luck.</span></span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-52311080948605779392011-08-14T12:47:00.000-07:002011-08-14T13:08:03.899-07:00OFDM, COFDM: DVB-T (Digital Video Broadcasting — Terrestrial)<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">DVB-T (Digital Video Broadcasting — Terrestrial)</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Ch-1705, QAM-16, Br~2232, Sh~2790, k=1/4 (not standard/typical mode - 4K)</span></b></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><b>Author:</b><span class="Apple-tab-span" style="white-space: pre;"> </span>SergUA6 </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><b>Band Width</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~4800000 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><b>Baud Rate</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~2232 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><b>n-Ary (PSK/MPSK)</b><span class="Apple-tab-span" style="white-space: pre;"> </span>QAM-16</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><b>Count of Carriers</b><span class="Apple-tab-span" style="white-space: pre;"> </span>1705</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><b>Step between carriers</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~2790 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><b>RX mode</b><span class="Apple-tab-span" style="white-space: pre;"> </span>direct output from modulator</span></div><br />
<div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="http://signals.radioscanner.ru/base/files/signal256/dvb_t.wav"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">The signal is here. Send by horizon.</span></a></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Sonograms:</span></i></div><div class="separator" style="clear: both; text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">pic.1 General view</span></i></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcqUPhP1y_tEN3w3pFIbVRG9S2HjI688eqYpi_XFJsY4NL7Q4LLIQM5orXSFRf6oyfAVMdYmmTFyuSrkuEQ56exiOaVkJj0lIt8ydgwPadOG4Q1PZPO6pAYbBpEuRpJgr9_1h2kKtpnNY/s1600/picture_picblock_a_1.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" height="196" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcqUPhP1y_tEN3w3pFIbVRG9S2HjI688eqYpi_XFJsY4NL7Q4LLIQM5orXSFRf6oyfAVMdYmmTFyuSrkuEQ56exiOaVkJj0lIt8ydgwPadOG4Q1PZPO6pAYbBpEuRpJgr9_1h2kKtpnNY/s320/picture_picblock_a_1.gif" width="320" /></span></a></div><br />
<div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Diagrams:</span></i></div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">pic.2 Quantity of the chanells, manipulation speed</span></i></div><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqXILM5Gki3S85vFIP6NgZ_yQOoMKYiS_GH-yEIHI_sDbpssJuRJr2FQxBW9gwB0scyJdrhEr3kYywcvsP-TEyapHTiUuHWzTiqleoZ0qsrecaGrkKbXX4BmL3Zz7Kzy9zPDgzzTKgQuo/s1600/picture_picblock_b_222222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" height="253" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqXILM5Gki3S85vFIP6NgZ_yQOoMKYiS_GH-yEIHI_sDbpssJuRJr2FQxBW9gwB0scyJdrhEr3kYywcvsP-TEyapHTiUuHWzTiqleoZ0qsrecaGrkKbXX4BmL3Zz7Kzy9zPDgzzTKgQuo/s320/picture_picblock_b_222222222222.gif" width="320" /></span></a></div><br />
<div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">pic.3 Constellation in the channel</span></i></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjILiKHRlT_T6l4qJIq1RnygyEPqmOAjuSKt3WpS4EYcq2vbknp4FjDuQaRJYBSavtUVISs89JBKH6dSBBSiF5h_zfEc_yU6SzuDqttnwf1UZw3o5kCn3RFwthNhvpxdnUWsY8K4PcskLk/s1600/picture_picblock_b_33333333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" height="174" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjILiKHRlT_T6l4qJIq1RnygyEPqmOAjuSKt3WpS4EYcq2vbknp4FjDuQaRJYBSavtUVISs89JBKH6dSBBSiF5h_zfEc_yU6SzuDqttnwf1UZw3o5kCn3RFwthNhvpxdnUWsY8K4PcskLk/s320/picture_picblock_b_33333333333.gif" width="320" /></span></a></div><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
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<div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">pic.4 Constellation in the channel</span></i></div><br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEit7-ciNFCxMIYVMCttpz4g1l3Hw7fXtZX53-xtF_rz1BdByCjdEzTNF0PzUfsiTSsvcDvDRqVFX9oI9Qff5wsm4JiGxvGf4f1n2FsxEfbZyiGAjq4OUjlA9WHBHMTx_iHl5P_M_wsfdwo/s1600/picture_picblock_b_44444444.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" height="173" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEit7-ciNFCxMIYVMCttpz4g1l3Hw7fXtZX53-xtF_rz1BdByCjdEzTNF0PzUfsiTSsvcDvDRqVFX9oI9Qff5wsm4JiGxvGf4f1n2FsxEfbZyiGAjq4OUjlA9WHBHMTx_iHl5P_M_wsfdwo/s320/picture_picblock_b_44444444.gif" width="320" /></span></a></div><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><b>DVB-T(Digital Video Broadcasting — Terrestrial) </b>- The digital standard of the television, which wide spread all over the world has begun long time ago. In Russia implementation of this standard is carried out since 2004.</span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">This example is received from modulator <b>DVB-MidiMod2 — 2×TS</b> it possesses not absolutely standard parameters. The standard modes for DVB-T modes are 8K and 2K, with a standard band of a signal approximately 7600 kHz. 8K and 2K are the sizes FFT/IFFT blocks, which are used at modulation/demodulation, where K = 1024. In this example the size of the block is not typical for DVB-T - it is equal 4K. 1K, 2K, 4K etc - this are the typified values oriented on usage of the fast algorithms FFT, which hardware implementation is well mastered. Nevertheless, within the limits of coefficient k = 1/4 for this signal, there is a big set of other, absolutely correct sizes of FFT blocks, at which the signal modulation/demodulation is possible, as it is shown. The signal has mass of distinctive features, to enumerate which there is no sense. </span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Standard DVB-T itself is well documentated and pretty difficult. </span><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">From explicit features of this signal, it is possible to mark offset/shift of the central channel of the constellation, what is most likely is a consequence of malfunction of the modulator. At total quantity of channels in 1705, loss of one, certainly isn't a fatal problem as in standard DVB-T powerful noise-resistant coding is used. It is necessary to mark that in 2007, the new standard DVB-T2, which had been accepted, possessing considerably more ample opportunities than DVB-T.</span><br />
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Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-87137521131314894122011-08-02T12:44:00.000-07:002011-08-02T12:44:11.767-07:00Update SA to the version v 6.2.5.8 : implementing technology of parallel computings<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Update SA to the version <a href="http://signals.radioscanner.ru/info/files/item1/sa_6258.rar">v 6.2.5.8 </a></span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Planned SA update. </span></b></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">At the desire of users, in this version support of 8bit data in unsigned and signed formats is added. The unsigned format is typical for the standard wav files, signed format for the various exterior devices, programs and calculators. </span></div><br />
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</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5dET6iDx94blUm-FTHl6A_si_2kBIlISyZyUK596aP3DTbL9lEzBwu4IhEnssIwiwxtainMn4yo6SiCw29nLUgUlSSLq_uzT1qfWK6AktQ0-xxiU_LPtwXrwaflk1qnmI7RYWDQv4Lww/s1600/1111111111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="210" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5dET6iDx94blUm-FTHl6A_si_2kBIlISyZyUK596aP3DTbL9lEzBwu4IhEnssIwiwxtainMn4yo6SiCw29nLUgUlSSLq_uzT1qfWK6AktQ0-xxiU_LPtwXrwaflk1qnmI7RYWDQv4Lww/s320/1111111111111.gif" width="320" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Also, since this version,</span><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b> we are implementing technology of parallel computings</b></span><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">.</span><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b> It allows to double, quadruple etc. speed of the main operations, depending on an amount of cores in the processor. </b></span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The maximum quantity of CPU cores supported by SA is equal 8, it is not the principle limitation, simply we have considered that it will be enough for beginning , and if composition CPU includes 16 cores or more, SA won't use all of them, but SA will try to involve all accessible cores to 8 inclusively. </span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPu8bYIFhtzCxp83SFDSyRKhxfMvsuTZQjumhfOZVnbWx26f6xTOX51DLioi1uufeZ2irxV2uCyqWoreo7Mk236gtvu179uuu83Dy7f10Bcvg9jvhzBDzfT0Ay9EIp5kIEagIc9Retl_U/s1600/22222222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="206" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPu8bYIFhtzCxp83SFDSyRKhxfMvsuTZQjumhfOZVnbWx26f6xTOX51DLioi1uufeZ2irxV2uCyqWoreo7Mk236gtvu179uuu83Dy7f10Bcvg9jvhzBDzfT0Ay9EIp5kIEagIc9Retl_U/s320/22222222222222.gif" width="320" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">On the current moment, the functions of the main working window are already parallelized. The screenshot above, shows: </span><br />
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</span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">- Red color - means already parallelized operations </span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">- Green color - means not parallelized operations, but very strongly optimized </span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">- Not selected by any colour - means it is left "as is" yet. </span><br />
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</span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">It is the initial stage of increasing of SA computing power, further gradually, we will translate/turn whenever possible, all functions of the program in this parallel mode. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Though this version already had preliminary and careful beta testing, some errors are still possible, which will be corrected in the process of their detection. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Good Luck~</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-76314191644858786122011-07-23T05:01:00.000-07:002011-07-25T05:47:29.267-07:00Updating SA to the version v 6.2.5.4.<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Updating SA to the version<a href="http://signals.radioscanner.ru/info/files/item1/sa_6254.rar"> v 6.2.5.4.</a></span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">This is planned update SA. We had added function of inversion of the whole spectrum at once. This function, in difference from regular procedure, works much more quickly. Very often similar problems arise at the analysis of various I/Q (SDR) records.</span></div><div><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYWkBGEfRSScMrI3NbCpp_uNMghcPZJBOKNdKxhy-unCOfuzdS-TRA7NzG8yh1Mnfr1cRvnrX9Bj-nLMf5hDCF2zfL_gwUjx5Tx6MTlaFn7RuuGf6nHDAMLTAJnnAgnopi2yfsa3aPCSE/s1600/1111111111111111111111111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" height="228" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYWkBGEfRSScMrI3NbCpp_uNMghcPZJBOKNdKxhy-unCOfuzdS-TRA7NzG8yh1Mnfr1cRvnrX9Bj-nLMf5hDCF2zfL_gwUjx5Tx6MTlaFn7RuuGf6nHDAMLTAJnnAgnopi2yfsa3aPCSE/s320/1111111111111111111111111111.gif" width="320" /></span></a></div><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">At coincidence/combination of H-markers and a call of the regular procedure of in-band inversion, the special case of fast inversion of the whole spectrum is working.</span><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"> ***</span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"> two popular enough in analysis functions ACF and CCF are introduced into module WF. Basically, it duplicates similar decisions in the basic working window, but for the module of the form of a signal, this opportunity is far not superfluous.</span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtwdjJrPslgQRxhJStDdtgNRaItv38Z_GIzLs8RIP_YwfRiDd0cxleqOpU5Owjuouvs5KrQ1kIsUyYr3Qfh6yUCYGHY4kstLf_VVreSEDmadYah32RFllkSyEUvtuTWqhjGkZcUYPpDKo/s1600/22222222222222222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" height="225" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtwdjJrPslgQRxhJStDdtgNRaItv38Z_GIzLs8RIP_YwfRiDd0cxleqOpU5Owjuouvs5KrQ1kIsUyYr3Qfh6yUCYGHY4kstLf_VVreSEDmadYah32RFllkSyEUvtuTWqhjGkZcUYPpDKo/s320/22222222222222222222222.gif" width="320" /></span></a></div><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Please pay attention, that the result of ACF function is displayed in the new window.</span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbKkCQlX9I2aGgd4-Uu_2ebxoy5foBVTXvcXR2rkLxDyTOSvVsQpIFHGKFNjKK9LmRUnhJwvB_fiVnj66sRm8Mz-f5biD4pkgIr98_xIgfrqQW0y8KPERbXfau-L8zwNldbVZwoS5pUkE/s1600/333333333333333333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" height="226" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbKkCQlX9I2aGgd4-Uu_2ebxoy5foBVTXvcXR2rkLxDyTOSvVsQpIFHGKFNjKK9LmRUnhJwvB_fiVnj66sRm8Mz-f5biD4pkgIr98_xIgfrqQW0y8KPERbXfau-L8zwNldbVZwoS5pUkE/s320/333333333333333333333.gif" width="320" /></span></a></div><br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiqh6vVAzBWf9FGm_hieXsJFNVKZ_r4rL8zHgT9KPaU8b4cJvF5Zvf_jQJwPS41yYiJf7T58bjFf6jf0AbRjHWcrgcxFGnnb2krjEsdrL0LbwPxlPmQMLg0b4us2GgNGox4qJkUUWN8Soo/s1600/4444444444444444444444.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" height="244" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiqh6vVAzBWf9FGm_hieXsJFNVKZ_r4rL8zHgT9KPaU8b4cJvF5Zvf_jQJwPS41yYiJf7T58bjFf6jf0AbRjHWcrgcxFGnnb2krjEsdrL0LbwPxlPmQMLg0b4us2GgNGox4qJkUUWN8Soo/s320/4444444444444444444444.gif" width="320" /></span></a></div><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">The result of function CCF is mapped in the same window, whence the function has been caused. Thus, the basic signal is mapped as a background, and the working element of the window is function CCF, its graphic is scaled, displaced, etc. the Segment/fragment of a signal, which is chosen as example for calculation CCF, is painted in yellow color.</span><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">*** </span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">The work with long symbols (up to 32000 samples (LS) and higher) is provided in module OFDM. The previous versions had restriction in 9000-10000 samples. However, it is necessary to notice, that analysis of OFDM signals with such sizes LS (~ 16000-20000 samples), demands certain, sometimes essential expenses of time.</span><br />
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</span><br />
<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">As usual, a number of internal small (sometimes even funny) bugs, which had been found out by users are eliminated. To a category of the "funny bugs", we bringh a recent turn of image CT, in this version all is returned on former positions.:-) actually, both variants are correct. But as, the left part at us has been proved as "good" in one of early <a href="http://signals.radioscanner.ru/info/item125/">SA articles - "work with module OFDM, FFT spectrum"</a>, we decided to return to a former format of CT display.</span><br />
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</span></div><div><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Good Luck ~</span></div>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-764516356178927012011-07-13T11:16:00.000-07:002011-07-13T11:17:12.132-07:00OFDM. COFDM: Rohde&Schwarz GN2130 digital voice modem<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Rohde&Schwarz GN2130 digital voice modem</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">OFDM, Ch - 48, Sh - 56.25, Br - 44.4(4), QAM-16/PSK-4, k = 17/64</span></b></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Author:</b><span class="Apple-tab-span" style="white-space: pre;"> </span>SergUA6 </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Band Width</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~ 2700 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Low Range</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~ 360 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Baud Rate</b><span class="Apple-tab-span" style="white-space: pre;"> </span>44.4(4) Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>n-Ary (PSK/MPSK)</b><span class="Apple-tab-span" style="white-space: pre;"> </span>Mixed QAM-16/PSK-4</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Count of Carriers</b><span class="Apple-tab-span" style="white-space: pre;"> </span>48</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Step between carriers</b><span class="Apple-tab-span" style="white-space: pre;"> </span>56.25 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>ACF<span class="Apple-tab-span" style="white-space: pre;"> </span>Typical</b> ~ 45 ms</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>RX mode </b><span class="Apple-tab-span" style="white-space: pre;"> </span>SSB</span></div><br />
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<div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="http://signals.radioscanner.ru/base/files/signal255/r_s_qam_16_48.wav"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The record of GN2130 is here.</span></a></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Sonorgams:</span></i></div><div class="separator" style="clear: both; text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></i></div><div class="separator" style="clear: both; text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.1 General view</span></i></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhV4YzcM_NQ8wKS8BPK2J4XsJQGSdTHjnBV86TvP6fTlt6gg9Aw7bRihIK2nm4NK8UOYWLaESVRFJZb9mJDdbX4XxhI-rJfc0q4Sl4967hJL42HboK8H6BewFhqNbqaFJoEWVMgRTfmFTQ/s1600/picture_picblock_a_1111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="146" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhV4YzcM_NQ8wKS8BPK2J4XsJQGSdTHjnBV86TvP6fTlt6gg9Aw7bRihIK2nm4NK8UOYWLaESVRFJZb9mJDdbX4XxhI-rJfc0q4Sl4967hJL42HboK8H6BewFhqNbqaFJoEWVMgRTfmFTQ/s320/picture_picblock_a_1111111.gif" width="320" /></span></a></div><br />
<div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Diagrams:</span></i></div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></i></div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.2 General quantity of the channels</span></i></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj41UU-YHeJ-EJW60n-RooxGat1vhQQo5mvI_MPzlar-UXVoW58SGzJdqCrEOPUdwQlVHiFMzVqT7zq4ZlSwR6dUIwYU26gsSu90mB9sRg-Rg8BVp7QlBshd8_iyHBm6OUPf5XOBvrMF3E/s1600/picture_picblock_b_1222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="173" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj41UU-YHeJ-EJW60n-RooxGat1vhQQo5mvI_MPzlar-UXVoW58SGzJdqCrEOPUdwQlVHiFMzVqT7zq4ZlSwR6dUIwYU26gsSu90mB9sRg-Rg8BVp7QlBshd8_iyHBm6OUPf5XOBvrMF3E/s320/picture_picblock_b_1222222222.gif" width="320" /></span></a></div><div style="text-align: center;"><br />
</div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.3 The constellation in the channel</span></i></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEixh5K8B9finD5pfwz1bdTs8KxJ_9lytfVwi-BU8rKBcqWDDOqlBlWA1hvSovbTvdtVQVtH1NdNQ0KRx56v4_GhEBmL5TtMsUnhtgSYErsPk7sp_E7yjdKBLKBLrQ734ntAL7W5DlWB9xk/s1600/picture_picblock_b_2333333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="173" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEixh5K8B9finD5pfwz1bdTs8KxJ_9lytfVwi-BU8rKBcqWDDOqlBlWA1hvSovbTvdtVQVtH1NdNQ0KRx56v4_GhEBmL5TtMsUnhtgSYErsPk7sp_E7yjdKBLKBLrQ734ntAL7W5DlWB9xk/s320/picture_picblock_b_2333333333.gif" width="320" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>R&S GN2130 </b>- is the The voice modem, optionaly delivered to HF transceiver XK200 of R&S corporation. It is used for a speech transmission after conversions into a digital form, closing of the data by means of internal cryptoprocessor is possible. In this example, 48 channel OFDM signal is orginized, with standard enough parametres. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Modulation in the channels is mixed QAM-16/PSK-4. Features: it is necessary to mark presence of the auxiliary/pilot-symbols , in every second symbol through every one channel for synchronisation and customisation/fine tuning of the adaptive corrector the special signals are transmitted. Also there is a presence of the preamble with duration about 600 msec. Maximum common technical speed for QAM-16 is ~ 8533 bps.</span><br />
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</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-44519975605399263572011-06-26T10:14:00.000-07:002011-06-26T11:45:52.926-07:00SA update to the version 6.2.5.3<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">SA update to the version <a href="http://signals.radioscanner.ru/info/files/item1/sa_6253.rar">v 6.2.5.2/3 </a></span></b></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Current update though doesn't affect the main SA possibilities, nevertheless solves a range of problems. </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The first and bad enough problem, is connected with imaging/mapping of the correlative triangle (CT) in OFDM module. I underline only with imaging. </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">At the usual revision of the algorithms and their decisions, mathematic had confused us with the news, that the correlative triangle left side can't be good/correct/rightly, as there is no general root at words "rightly" and "left". :-) </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The joke had been estimated, but nevertheless, really, at the very early beginning of OFDM module development, an output of image CT on the screen was unrolled/turn on 180 degrees concerning a vertical axis. And the right (good/correct/rightly) side CT has appeared on the monitor as the left side. As it doesn't influence results of operation of the algorithm, the error in display wasn't so noticable and had been existing long time enough. </span></div><div style="text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWOLZvqBRU87tYVJrmfC8iOcqI7JNREK5ROhtTDJgbtQW3143dqhbQv5Ds-xMYAA1dDZMDcvn-Fwb780HDFRZ3Kqnzja6XtKzOeZhE8B5uBar_FOGlSedJanMHbaeaDCATsNFV9x71o4Y/s1600/picture_picblock_a_2.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="256" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWOLZvqBRU87tYVJrmfC8iOcqI7JNREK5ROhtTDJgbtQW3143dqhbQv5Ds-xMYAA1dDZMDcvn-Fwb780HDFRZ3Kqnzja6XtKzOeZhE8B5uBar_FOGlSedJanMHbaeaDCATsNFV9x71o4Y/s320/picture_picblock_a_2.gif" width="320" /></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">In this version we recover justice as it doesn't demand any fundamental changes in the main mathematical calculations. </span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjKpnYv4SEvTrhrK1pt9QI19MStAeoBONsB-VD3ueGoomfBB10q5UmtgHXLvSd23PbOEx1kpsN-ja5IKK9k0gieCp_v7tTB7juxtwbW5iqrezMwz9VlgEESZDcdrAohp5Sw9wD2_kgFS7A/s1600/3333333333333333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"></span></a></div><div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh_2rRRtRL9MgvgWFpyDEIpK-g098CLFqg8SHBWP1HzWRvWX6V-AWeZDXGeA1HS0o8ES1F7G6sh-6e4qKr_YbiZm3WslDBlBqKC5ZYvu2MiDcKEHTaBZqDxFWUV512lJDVkULVRZQ0rLAM/s1600/222222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="260" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh_2rRRtRL9MgvgWFpyDEIpK-g098CLFqg8SHBWP1HzWRvWX6V-AWeZDXGeA1HS0o8ES1F7G6sh-6e4qKr_YbiZm3WslDBlBqKC5ZYvu2MiDcKEHTaBZqDxFWUV512lJDVkULVRZQ0rLAM/s320/222222222222.gif" width="320" /></a></div><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Actually such awkward situation is gross enough error, although it doesn't influence the general results. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">We remove historically added restrictions on the lower bound of filters in WF module and the general-purpose/universal demodulator. In the current version the general approach to a filtration is reconsidered, and the range of setting of frequency of a cutoff of filters is accepted from 1 to Fd/2 a Hertz. </span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWOLZvqBRU87tYVJrmfC8iOcqI7JNREK5ROhtTDJgbtQW3143dqhbQv5Ds-xMYAA1dDZMDcvn-Fwb780HDFRZ3Kqnzja6XtKzOeZhE8B5uBar_FOGlSedJanMHbaeaDCATsNFV9x71o4Y/s1600/picture_picblock_a_2.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"></span></a></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhhyPoi1qvW8HWwdP2X8K2fBmZBrzTEZ48mxsI3SgoobDP0b11C_YN-CWE-eeeGPShlZmfkYgGXeqnNmdpZGXnxzmXGj8t0Bd5z3DLQ7GEMljqI325R7OX17yjiBhtgbbcJ636Q-2BL42s/s1600/3333333333333333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="226" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhhyPoi1qvW8HWwdP2X8K2fBmZBrzTEZ48mxsI3SgoobDP0b11C_YN-CWE-eeeGPShlZmfkYgGXeqnNmdpZGXnxzmXGj8t0Bd5z3DLQ7GEMljqI325R7OX17yjiBhtgbbcJ636Q-2BL42s/s320/3333333333333333333.gif" width="320" /></a></div><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">It allows to solve, in some cases, the analysis tasks more effectively. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">*** </span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">It is possible to set any, in limits from 1 to 1000 level/step of time gating in VMW module, at the usage of a stroboscopic output of the image, in this version. </span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYNwTRlSMRn_enxbRafoSaMIWdOMuFq0qFLVWjrgBrGMHqovHggUSLEZcFhgmJ4fZaNkGFJuVitnErb3F-KtHA0tYajdnAuFF7EP7NbU1yxr8m1zbP5gPwfF1mxjl1iBtsy5_Y2TfjwUk/s1600/4444444444444444.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="248" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYNwTRlSMRn_enxbRafoSaMIWdOMuFq0qFLVWjrgBrGMHqovHggUSLEZcFhgmJ4fZaNkGFJuVitnErb3F-KtHA0tYajdnAuFF7EP7NbU1yxr8m1zbP5gPwfF1mxjl1iBtsy5_Y2TfjwUk/s320/4444444444444444.gif" width="320" /></span></a></div><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">It as expands VMW module possibilities to the better side. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">*** </span><br />
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The error in ISD corrector operation is eliminated, we were informed about this error by users. The corrector incorrectly worked in many cases, it had been connected with update of the algorithm of correction in version 6.2.4.6 the Error was thin enough, and to find it out casually was rather problematic: that once again shows, that users are very attentive and skilled in analysis questions. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">In this version, besides bug fixing, speed of ISD corrector operation ISD was increased approximately in one and a half-two time, and its efficiency is raised. Thus as before, the algorithm isn't omnipotent, but it is general-purpose/universal, and it still can be mistaken, but in the majority of practical cases, it is well enough compensates various, not fatal distortions of signals. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">*** </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">In all previous versions, attempt to load the files with big size and big sampling rate in VMW module, leaded to an exceptional situation (error). Sampling rate reduction In some cases helps, but in general, it does not solve the problem. In version 6.2.5.3 this moment is corrected. </span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSjxYEPX4yjBd2K_ryuTcIHT7bjq12k56ho41D71sDVBeICKuD68U1GiBC74iqSqtvUR71rh4U2vxGKyy5vEzb_oOdahphea_DwzF-aykgP9Jeu2purCFxmeGoXg4Cr6wdDd4DuQKJheg/s1600/5555555555555555.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="194" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSjxYEPX4yjBd2K_ryuTcIHT7bjq12k56ho41D71sDVBeICKuD68U1GiBC74iqSqtvUR71rh4U2vxGKyy5vEzb_oOdahphea_DwzF-aykgP9Jeu2purCFxmeGoXg4Cr6wdDd4DuQKJheg/s320/5555555555555555.gif" width="320" /></span></a></div><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><a href="http://www.radioscanner.ru/files/download/file12065/full_tv.wav">Record-example</a> the size of record ~ 10 mbytes. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">*** </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Also possibility to synthesize various MFSK signals has been added into OCG programm, al though it doesn't affect SA, nevertheless, we recieved requests to include this function into synthesizer, so we realized it it in version <a href="http://www.radioscanner.ru/files/download/file4095/ocg_1212.rar">OCG 1.2.1.2</a> The result of synthesis of signal MFSK-11 is shown below. </span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhB7iMt5ahGKAYeov6vnyL1J-vO5MTLch272ZxfySSu3yuDiGZ1eW1F-NRuqdTD-3XGq_UUDWWFmFSixwoi6WtxDVbhQkWTmdZp0T5uEgpkb9F_1uuJEjY_JmqE1UHUSb_7PJb8kIQ2PkI/s1600/6666666666666666.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="216" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhB7iMt5ahGKAYeov6vnyL1J-vO5MTLch272ZxfySSu3yuDiGZ1eW1F-NRuqdTD-3XGq_UUDWWFmFSixwoi6WtxDVbhQkWTmdZp0T5uEgpkb9F_1uuJEjY_JmqE1UHUSb_7PJb8kIQ2PkI/s320/6666666666666666.gif" width="320" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">As usual, a range of small, hardly noticeable improvings had been done, and some minor problems were solved. </span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Good Luck~</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-18213415114733723332011-06-21T13:30:00.000-07:002011-06-21T13:31:19.242-07:00SECAM - National standard of Russian TV<div class="separator" style="clear: both; text-align: left;"></div><div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Full TV spectrum, with NICAM (digital audio channel)</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">SECAM - National standard of Russian TV </span></div><br />
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</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Author:<span class="Apple-tab-span" style="white-space: pre;"> </span>SergUA6 </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Band Width<span class="Apple-tab-span" style="white-space: pre;"> </span>~ 7 mHz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">RX mode<span class="Apple-tab-span" style="white-space: pre;"> </span>Source I/Q record</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The signal is <a href="http://www.radioscanner.ru/files/download/file12065/full_tv.wav">here.</a> Send by <b>geka. </b>The file size is about 10 Mb.</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Sonograms:</span></i></div><div class="separator" style="clear: both; text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></i></div><div class="separator" style="clear: both; text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.1 General view</span></i></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-tab-span" style="white-space: pre;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> </span></span></div><br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsvBuawvLBaDrFSlqK6axap6ShHoqiKw27ktvVh6qxhQDPJVHahdhCjDsrrXO3EvjX-sSIpSl8JRcaIZcsF9z365yUj_CQknwppNx7eunialPoO9ylTpHKzUFAq_8VBUp9bZK2-jWhCJw/s1600/111111111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="200" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsvBuawvLBaDrFSlqK6axap6ShHoqiKw27ktvVh6qxhQDPJVHahdhCjDsrrXO3EvjX-sSIpSl8JRcaIZcsF9z365yUj_CQknwppNx7eunialPoO9ylTpHKzUFAq_8VBUp9bZK2-jWhCJw/s320/111111111111.gif" width="320" /></span></a></div><br />
<div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.2 The detalization</span></i></div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></i></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgr8ewbzfP8q36A_6Das-Z9rm8TQgaWGsnJ8eZ0v1UrXCNMkCQdjqDbzLortNIh9dcPkbnDgP8kMZfksEavsN_zxKOKccbBhWyh_fDmHCLgszdHnSIW0KgETy5JfabVBlKZ_GQapMQCEbg/s1600/222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="200" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgr8ewbzfP8q36A_6Das-Z9rm8TQgaWGsnJ8eZ0v1UrXCNMkCQdjqDbzLortNIh9dcPkbnDgP8kMZfksEavsN_zxKOKccbBhWyh_fDmHCLgszdHnSIW0KgETy5JfabVBlKZ_GQapMQCEbg/s320/222222222.gif" width="320" /></span></a></div><br />
<div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.3 The graphical spectrum</span></i></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgAcnRkp5xtlzoCEqJ5y6-n5lMdMEHJU2z4GtM5Pr5a88fgoBA5FyA7rlJ_29z5C2YnpwvyQCcAU8EquywTM8pXw7AivE1PMppAZfFWDmVYPr8rzGpd5hyphenhyphenCOqhkoevbfMI_9DpIAgCTr2E/s1600/333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="97" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgAcnRkp5xtlzoCEqJ5y6-n5lMdMEHJU2z4GtM5Pr5a88fgoBA5FyA7rlJ_29z5C2YnpwvyQCcAU8EquywTM8pXw7AivE1PMppAZfFWDmVYPr8rzGpd5hyphenhyphenCOqhkoevbfMI_9DpIAgCTr2E/s320/333333.gif" width="320" /></span></a></div><br />
<div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Diagrams:</span></i></div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></i></div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.4 NICAM - digital channel of sound</span></i></div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></i></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBLr_3zfJOSYTi6yHTm0evYmaEBfvTbOwJRGNXiVeST1IWz8-LLNgsPLBZzk3V5DQ1TFEOyuoqVQgR5iuv09DvJJQiW-ixFuVOySU58BzDPtVkUuWLNrqt4-SyXWosYV9gpkzPCcdaBkM/s1600/44444444.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="170" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBLr_3zfJOSYTi6yHTm0evYmaEBfvTbOwJRGNXiVeST1IWz8-LLNgsPLBZzk3V5DQ1TFEOyuoqVQgR5iuv09DvJJQiW-ixFuVOySU58BzDPtVkUuWLNrqt4-SyXWosYV9gpkzPCcdaBkM/s320/44444444.gif" width="320" /></span></a></div><br />
<div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Pictures:</span></i></div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></i></div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.5 Channel of the brightness after AM detector in VMW </span></i></div><div style="text-align: center;"><i><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></i></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjo3jNqCqYRPJI_DkTT-K7OgLTZyWiPvjmFwqDN_p78yt5LozN3zERf5u8xx7Ruer44n3YyHEp8u97Rq9_0HRm4xMOklYyswXbd4whRIpnULblEypqNujZKZN71qAS_MfMKqK8M5WgZslE/s1600/555555555.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="194" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjo3jNqCqYRPJI_DkTT-K7OgLTZyWiPvjmFwqDN_p78yt5LozN3zERf5u8xx7Ruer44n3YyHEp8u97Rq9_0HRm4xMOklYyswXbd4whRIpnULblEypqNujZKZN71qAS_MfMKqK8M5WgZslE/s320/555555555.gif" width="320" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>SECAM - National standard of Russian TV</b> - The television standard of Russia. Standard SECAM is well described in the literature, so there is no special sence to stop on it. The interest represents an additional digital sound channel by technology NICAM, in which modulation PSK-4 (QPSK) is used. This additional channel, is allocated apparently from screenshots, between chrominance subcarriers and the main analog channel of the soundtrack.</span><br />
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</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-31381285489375709462011-06-15T14:53:00.000-07:002011-06-15T15:42:30.278-07:00SA update to version v 6.2.5.0/1<span style="font-size: large;"><span style="font-family: Arial,Helvetica,sans-serif;">SA update to version v </span><a href="http://signals.radioscanner.ru/info/files/item1/sa_6251.rar" style="font-family: Arial,Helvetica,sans-serif;">6.2.5.0/1</a><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> Planned SA update. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> Determination of an exact amount of frequencies in the various MFSK signals is an important enough task in the analysis. In this update we had added this possibility, we introduced function "Count freqs” into the module of viewer of the form(WF). </span></span> <br />
<div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiX_eLtxNg3eNaPzmeFlT0Uc_hKT8Nl__YQ7zLM8n9kE5kE2M_PL46TJt0TR1XRup8gFTArOzKerjlAixcT32UJxdF10jZ98eUNW8VKdcYPXO_jzYnRUbPl74A6KoOzSbovXKuorFVhyphenhyphenvc/s1600/1111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="246" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiX_eLtxNg3eNaPzmeFlT0Uc_hKT8Nl__YQ7zLM8n9kE5kE2M_PL46TJt0TR1XRup8gFTArOzKerjlAixcT32UJxdF10jZ98eUNW8VKdcYPXO_jzYnRUbPl74A6KoOzSbovXKuorFVhyphenhyphenvc/s400/1111.gif" width="400" /></a></span></div><span style="font-size: large;"><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> The function "Count freqs" calculations of the size of the grid of frequencies. I underline, not an amount of frequencies used/involved in a current fragment of a signal, but dimensionality of the grid, in which limits these frequencies are generated. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> Basic actions on function "Count freqs" usage are the following: </span></span> <div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgZ1_hTQkdO7lglFHW7QnWVfF6VcklnQC3x3sunNFcPswn_VGm6S6gq3Qvtv5a6SHbh5zRqhGFUa7XtkEqiIHAl6GiP54RzwWcHq7gaB9wppPn2-yJJVKXkAJBDj1zPjnp7YvGgyjIq8N4/s1600/22222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgZ1_hTQkdO7lglFHW7QnWVfF6VcklnQC3x3sunNFcPswn_VGm6S6gq3Qvtv5a6SHbh5zRqhGFUa7XtkEqiIHAl6GiP54RzwWcHq7gaB9wppPn2-yJJVKXkAJBDj1zPjnp7YvGgyjIq8N4/s400/22222.gif" width="207" /></a></span></div><span style="font-size: large;"><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> 1. To receive speed of manipulation of the signal - Baud rate, by any method. It is desirable, but not a mandatory step. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> 2. To select the signal by H-markers. This operation demands an accuracy. It is impossible to select the signal too densely, and it is impossible to select it too widely, the reasonable compromise is required. Normally we recommend to allocate the markers on distance within (1.5-3) *Br from the signal. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> 3. Call the Phase detector function. It is the standard operation, which creates the new window with results. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> 4. It is necessary to call WF module in the new window through PopUp menu, it is also the standard action. If in the first point value Baud rate has been received, in WF module, then the automatic filtration of the signal will be produced, otherwise the filtration will be necessary to realize in the manual mode. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> 5. It is necessary that all artifacts (usually it is the beginning and the end of a signal) have been displayed behind the display window in WF module. It is possible to reach, at least by two methods: </span><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> The first - to select a pure part of the signal with V-markers, and to create a copy in the new window. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> The second - using horizontal zoom, and shifting/moving the signal by the horizontal slider, to bring in the artefacts behind the window borders. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> 6. To turn on the mapping of the histogram "Sum"=ON on the "pure" signal. To pick up the size of the histogram by vertical. To install H-markers on the upper and lower channel of the histogram. To cause PopUp menu of the module. Position of V-markers can be any as all visible part of the signal is processed. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> 7. To select point "Count freqs". </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> Important! The result of function "Count freqs" is not an amount of channels in the signal, but the size of the uniform/proportional grid of frequencies, in which the used channels are "laid down". The so-called grid of formation, the size of this grid represents big interest in the analysis. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> Range of determination of dimensionality of the grid of frequencies by the function "Count freqs", is from 4 to approximately 260. In reality, the function defines grids of more dimensionalities to 300-320, but it very strongly depends on the signal quality, and many other things. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> Error report appearance is possible. </span></span> <div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtV-r_H72cXARh90JvsnXQ3kGImReajGmHDxp8KnXK6UP68FXm9fjCQkzI_9K6SZLUlfuG7MpnvVN9JRIAsHVRXVPfjUyd5TsFQv53O9um6TkcfsPD_-w4eaYmWcXSZVYduUs7NwkWj9M/s1600/333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="190" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtV-r_H72cXARh90JvsnXQ3kGImReajGmHDxp8KnXK6UP68FXm9fjCQkzI_9K6SZLUlfuG7MpnvVN9JRIAsHVRXVPfjUyd5TsFQv53O9um6TkcfsPD_-w4eaYmWcXSZVYduUs7NwkWj9M/s400/333333.gif" width="400" /></a></span></div><span style="font-size: large;"><br style="font-family: Arial,Helvetica,sans-serif;" /></span><span style="font-size: large;"><span style="font-family: Arial,Helvetica,sans-serif;"> The reasons/causes: </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> - Both H-markers, and-or one of them, are installed not on the histogram lines/channels </span></span> <span style="font-size: large;"><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> - There are lesser then 4 or more then 400 frequencies in the signal </span><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> - The distance between H-markers is too small, or the markers are combined </span><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> - the function can't be completed correctly at current parameters of the signal, or on the current fragment of the signal. </span><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> There is an article on usage of this new function, as there are some thin moments and nuances, which are beyond the update description => </span></span> <span style="font-size: large;"><a href="http://signals.radioscanner.ru/info/item260/" style="font-family: Arial,Helvetica,sans-serif;">Signals Analysis in SA version v 6.2.5.1</a></span> <span style="font-size: large;"><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> It is necessary to show certain care, although function "Count freqs" works reliably enough in many cases, nevertheless, it is rigid enough algorithm which can be mistaken. </span></span> <span style="font-size: large;"><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> As usual, minor problems found out by users are removed. Also I want to express gratitude to all beta testers, who have taken part in preliminary testing of this update. </span></span> <span style="font-size: large;"><br style="font-family: Arial,Helvetica,sans-serif;" /><br style="font-family: Arial,Helvetica,sans-serif;" /><span style="font-family: Arial,Helvetica,sans-serif;"> Good Luck~</span></span> <span style="font-size: large;"><br style="font-family: Arial,Helvetica,sans-serif;" /></span> <b><b><br />
<b></b></b></b>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-86407750651153178762011-05-23T10:47:00.000-07:002011-05-24T16:17:12.637-07:00SA update to version 6.2.4.8<div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">SA Update to version <a href="http://signals.radioscanner.ru/info/files/item1/sa_6248.rar">6.2.4.8</a>.</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">This is the planned update.</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">In this version we are expanded number of SA tools by adding "In-band signal inverse" function.</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJ_0AEHItO3ZUJi0HcqQ7nhYN6gT4bv7RPuUAbyzgfeiiGyHNBQtcdS-4YnDInjxP5Z0-kGnY0D8vPYQUJEnJ7SlDa8S3ssiJ4-KFnkUCgd5rOD1kEYaX7sOdbG7yAblOc2S47WQkmmF0/s1600/picture_picblock_a_11111111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" height="233" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJ_0AEHItO3ZUJi0HcqQ7nhYN6gT4bv7RPuUAbyzgfeiiGyHNBQtcdS-4YnDInjxP5Z0-kGnY0D8vPYQUJEnJ7SlDa8S3ssiJ4-KFnkUCgd5rOD1kEYaX7sOdbG7yAblOc2S47WQkmmF0/s320/picture_picblock_a_11111111111.gif" width="320" /></span></a></div><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">This function provides qualitative enough inversion of the selected band of a signal or the whole signal, without affecting the other spectrum. It is required for the fast inversion of the signal, and as allows to restore/compensate or reduce various distortions in some cases. </span><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Example of operation with the distorted signal<a href="http://signals.radioscanner.ru/base/signal225/"> Icom UT-109</a></span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsQPlWWIfWH-pdyclEuo7AdHPmL8zfNicg2uUwGnIgDHMirEBxs48CmKaCD1U-xLTEJ2edHZnA6hSZQHKXlVhjroPnQ-AN4LMJwTrDglLhSKiQdShCMhc94kF7_JpTrnje3CGSCRRf_KQ/s1600/picture_picblock_a_222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsQPlWWIfWH-pdyclEuo7AdHPmL8zfNicg2uUwGnIgDHMirEBxs48CmKaCD1U-xLTEJ2edHZnA6hSZQHKXlVhjroPnQ-AN4LMJwTrDglLhSKiQdShCMhc94kF7_JpTrnje3CGSCRRf_KQ/s320/picture_picblock_a_222222222.gif" width="282" /></span></a></div><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
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<a href="http://signals.radioscanner.ru/info/files/item256/i.wav"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Distorted fragment.</span></a><br />
<a href="http://signals.radioscanner.ru/info/files/item256/r.wav"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Restored fragment.</span></a><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Also range of minor bugs detected by users had been removed, some small corrections had been added.</span><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Good luck!</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-15986549289613837182011-05-13T13:19:00.000-07:002011-05-13T19:32:38.265-07:00Purple License.<div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Greetings!</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Dear readers and SA users, we would like to inform you, that we have added new type of SA license - it is <a href="https://www.plimus.com/jsp/buynow.jsp?contractId=2986734">Purple License.</a></span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPtmjwhAsoCY9MliOddzn3f1CptFAqE8zasEPG1jeYXEJ0R3C484i3dbo3jX4dnIj1eudXEll1I-21yctWTVdsm9IqqLGnctHdQNTZLCYaG_AdzK2CasgzKXti7AGZCJmSNEzFtfWiKMI/s1600/purple_license.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPtmjwhAsoCY9MliOddzn3f1CptFAqE8zasEPG1jeYXEJ0R3C484i3dbo3jX4dnIj1eudXEll1I-21yctWTVdsm9IqqLGnctHdQNTZLCYaG_AdzK2CasgzKXti7AGZCJmSNEzFtfWiKMI/s1600/purple_license.jpg" /></span></a></div><span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial,Helvetica,sans-serif; font-size: large;">Often there is a necessity to acquire/get 7-12-15 or more SA licenses, for example for some educational institution or computer classes. For such cases we have added one more type of the license - Purple license. This license has no fixed amount of keys by default, the amount of keys should be specified and paid by user. The amount should not be less than 5 keys. We are hope, that this type of license will help to solve some questions concerning SA acquisition.</span><br />
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</div>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-24808228193345859542011-05-03T15:45:00.000-07:002011-05-03T15:45:57.457-07:00New Article: Perspectives of the analysis of OFDM signals with CP.<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Perspectives of the analysis of OFDM signals with CP. </span></b></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">As usual, we assume that reader possesses some basic knowledge concerning principles of formation OFDM, and the reader is acquainted with our previous articles, as terminology and the main ideas remain former. </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">There are some general provisions. </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">We already were being considered and showed in the previous articles, that at formation of OFDM signals the basic/main/key parameters are LS, LU and LG (CP), which are having dimensional samples. Basically, each one of these two parameters from these three (LS LU LG), unambiguously set the third parameter, as there is a simple correlation, namely: </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">LS = LU + LG; </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">We add one more, the dimensionless parameter, coefficient k = LG/LU or k = ((Sh/Br) - 1). This parameter allows to receive correct LS, LU and LG for specific conditions, besides k possesses mass of other remarkable properties, but it is beyond this article. </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">In a general view the scheme of formation of OFDM signal with CP looks as follows: </span></div><div style="text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">As we already considered, and I once again underline this moment, that there is no any Hertz and-or seconds! LS, LU and LG have at a stage of formation dimensionality of samples/samplings. We name it Fundamental/primary/key parameters of OFDM signal, these parameters are core of OFDM signal. All is equal to these parameters (samples), with what speed they will be transferred, needless to say, that transmission/transfer speed should be a constant.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">As soon as some speed of following is given to samples (sampling rate of formation of OFDM signal OFDM), then earlier faceless values LS, LU and LG acquire/get dimensionality in Hertzs and-or seconds. But! They don't lose, and can't lose their main/fundamental properties. For example, as there was duration LS = 100, LU = 60 and LG (CP) = 40 samples, so it remains, irrespective of sampling rate.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">There is one nuance in these transparent and logical enough conclusions. All what has been told above, concerns to so-called sampling rate of formation of OFDM signal.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">In practice, to form a signal at once on operational frequency it is not convenient, and frequently it is not even possible. Normally, the signal should be formed on sampling rate Х, and further whole spectrum of the signal should be transferred on operational frequency Y. Thus, sampling rate X can't change duration LS, LU and LG, as it (sampling rate) is a consequence of existence of these parameters, and frequency of transfer Y can't destructively influence these parameters as it is not connected to them.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Let's sum up the told...</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Full version of this article you may read <a href="http://signals.radioscanner.ru/info/item253/">here.</a></span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">The arcitle contain examples on the real signals, schemes, detailed pictures, explanations and other interesting information.</span><br />
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</span>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-69611493809223396262011-04-29T18:26:00.000-07:002011-04-29T18:27:34.059-07:00OFDM, COFDM: CIS-79, conditionaly name TANDEME<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">CIS-79, conditionaly name TANDEME</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Ch-79, QAM-64, Sh-37.5, Br~30.476, k = 59/256</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">OFDM, COFDM</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><a href="http://signals.radioscanner.ru/base/files/signal252/f.wav">The signal is here.</a> Send by YuriVR.</span></b></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Author:</b><span class="Apple-tab-span" style="white-space: pre;"> </span>SergUA6 </span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Band Width</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~3000 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Low Range</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~350 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Baud Rate</b><span class="Apple-tab-span" style="white-space: pre;"> </span>~30.476 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>n-Ary (PSK/MPSK)</b><span class="Apple-tab-span" style="white-space: pre;"> </span>QAM-64 and PSK-8</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Count of Carriers</b><span class="Apple-tab-span" style="white-space: pre;"> </span>79</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>Step between carriers</b><span class="Apple-tab-span" style="white-space: pre;"> </span>37.5 Hz</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>RX</b> mode<span class="Apple-tab-span" style="white-space: pre;"> </span>SSB</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Sonograms:</span></b></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.1 Generall view</span></div><div class="separator" style="clear: both; text-align: left;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7jyShMKf1M9hHepayQF6woIa8uy-LO0RXjR1k9VAyu2K9iAcvMd3rnVDH9yEafdxKmpoaUbIrWS-eMuzYVmOqZwnttIYmZe63ICLentPgUMlaLpu4aiAlkcbYs7OCGC3ePSZAIQzEeDA/s1600/1111111.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="137" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7jyShMKf1M9hHepayQF6woIa8uy-LO0RXjR1k9VAyu2K9iAcvMd3rnVDH9yEafdxKmpoaUbIrWS-eMuzYVmOqZwnttIYmZe63ICLentPgUMlaLpu4aiAlkcbYs7OCGC3ePSZAIQzEeDA/s320/1111111.gif" width="320" /></span></a></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"></div><div style="text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"> pic.2 Normal symbol and destroyed by distortions symbol</span></div><div class="separator" style="clear: both; text-align: center;"></div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-3sCkZIrBS5YTRnckwcljBi56lrMg65hbXs9Y4H2mZvGhpQKQgkHxsWEos80N67yT9b23kQLTKngOYKCUwjDpOLwm48IAg7vEWfv0498RgkWUiiB4DxL2_GssloBOwwrzUuvJucQScgc/s1600/2222222222.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="171" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-3sCkZIrBS5YTRnckwcljBi56lrMg65hbXs9Y4H2mZvGhpQKQgkHxsWEos80N67yT9b23kQLTKngOYKCUwjDpOLwm48IAg7vEWfv0498RgkWUiiB4DxL2_GssloBOwwrzUuvJucQScgc/s320/2222222222.gif" width="320" /></span></a></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">Diagrams:</span></b></div><div class="separator" style="clear: both; text-align: center;"><b><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></b></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.3 The constellation in the special/service channeles</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidtlCK4QLLvceQCRrWEqsPYKAtIK2kvqEeAgUsylhyphenhyphenjPa0ia96l3kOsLTPTOpZrsyxddVp_KeIxvD-UbNtnEc-dMBD_euRRnAVe-ZHqODc9eHpExy-uG5pEOezFkKMfnrCfeDAop8XXcI/s1600/333333333333.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><img border="0" height="182" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidtlCK4QLLvceQCRrWEqsPYKAtIK2kvqEeAgUsylhyphenhyphenjPa0ia96l3kOsLTPTOpZrsyxddVp_KeIxvD-UbNtnEc-dMBD_euRRnAVe-ZHqODc9eHpExy-uG5pEOezFkKMfnrCfeDAop8XXcI/s320/333333333333.gif" width="320" /></span></a></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;">pic.4 Full constellation of the channel</span></div><div class="separator" style="clear: both; text-align: center;"><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><b>CIS-79, TANDEME</b> - Russian native signal, which full analysis was realized by participants of "power group" of our forum. From singularities it is necessary to mark a preamble. This preamble isn't OFDM part, and represents an independent special fragment. Also usage in service channels of modulation PSK-8 is curious enough. The record completely corresponds to initial parameters of the signal, and thereupon rather explicitly can be studied in SA without special problems. Despite high quality of the material, there are destroyed symbols, which as are perfectly visible at the detailed review in SA, it is the result of an overload at signal's recording.</span><br />
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</div>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.comtag:blogger.com,1999:blog-2792811986953988066.post-7380382459102060912011-04-15T08:11:00.000-07:002011-04-15T08:21:16.548-07:00Update SA to version 6.2.4.6<div style="font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;">SA Update to version <b><a href="http://signals.radioscanner.ru/info/files/item1/sa_6246.rar" target="_blank">v 6.2.4.6</a></b></span></div><div style="font-family: Arial,Helvetica,sans-serif; text-align: left;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif; text-align: left;"><span style="font-size: large;">Support of 64 bit data with a floating point is added. <b><br />
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</div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjI0TsBUwQFYhs0jYJks4Z6Il3ktXZC2BVCqaTl351m-lTaojhVawqT7xYIUMCCfBOxGyW4ZBriwcElNiacr9C4MEHhwWkut9tuIT5Fuotqkg0DHe-eNN5Q1R4EceFsLPsbvKy0jf9Z4LQ/s1600/1.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="207" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjI0TsBUwQFYhs0jYJks4Z6Il3ktXZC2BVCqaTl351m-lTaojhVawqT7xYIUMCCfBOxGyW4ZBriwcElNiacr9C4MEHhwWkut9tuIT5Fuotqkg0DHe-eNN5Q1R4EceFsLPsbvKy0jf9Z4LQ/s320/1.gif" width="320" /></a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">The algorithm of operation of OFDM module had been essentially changed.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">"One-dimensional" search of a correlative triangle(CT) which had been realized in the previous versions, possesses imperfection. The probability of detection/finding CT, depends on signal shift on/by frequency, and sometimes the algorithm is mistaken.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">Problem is not in the fact that it happen rather rare, and in that, if the triangle hasn’t been found out there are no any warranties that the triangle really doesn't exist.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">In the current version of OFDM module another algorithm of "two-dimensional" search (terminology belongs to our mathematic) is implemented. This algorithm provides much bigger guarantee of findings CT, and besides it has reserves for optimization. In spite of the fact that in the computing/calculating relation the new algorithm is much more resource-demanding than the previous one, the general speed of finding/detection CT, is increased in 6-7 and more times, especially it is noticeable on the big dimensionalities LS, for 600-800 samples and above</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigy0f2M-1P48s-4TKsFMDajm_PqI5a-OF3qmhZkkz6F4sxO35E903r73Nc2F0brIJJoJfrWwUGEyj9SyoIXP487aWpbKMEqOBHlVpHV7sZ8Q9GGY074I8IttPkhxkV2GclOLFTJR7ut3M/s1600/2.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigy0f2M-1P48s-4TKsFMDajm_PqI5a-OF3qmhZkkz6F4sxO35E903r73Nc2F0brIJJoJfrWwUGEyj9SyoIXP487aWpbKMEqOBHlVpHV7sZ8Q9GGY074I8IttPkhxkV2GclOLFTJR7ut3M/s320/2.gif" width="268" /></a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"></div><br />
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<div style="font-family: Arial,Helvetica,sans-serif;"></div><span style="font-size: large;">Possibility of relocation of the green marker through the keypad is added. It works only in a dynamic mode, as in the static mode there is no big sense to “walk” on channels.</span><br />
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<div class="separator" style="clear: both; text-align: center;"><span style="font-size: large;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjr_FKq2V1ItXXlbx6iPRiB9U1nykJSYv3PJTc-GfyG742OhERP7l8ESEeQIklZlXAgsOSx5m-oxm7fxPtXa-JrwiMtofsKtHsVDkw30loEgy0ER9G1-sV8Sp58t7fTzdGaB6cBH6f5ZNY/s1600/3.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="205" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjr_FKq2V1ItXXlbx6iPRiB9U1nykJSYv3PJTc-GfyG742OhERP7l8ESEeQIklZlXAgsOSx5m-oxm7fxPtXa-JrwiMtofsKtHsVDkw30loEgy0ER9G1-sV8Sp58t7fTzdGaB6cBH6f5ZNY/s320/3.gif" width="320" /></a></span></div><br />
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<div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">Some utilitarian actions in OFDM module has been automatized, for example, in the current version the program tries to install CT in an optimal position independently. Accuracy of calculation of clock rate(Br) is increased.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">Also work/operation of some separate functions and procedures is reconsidered/optimized both in OFDM module and in other modules.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">As usual, except the described changes, a range of internal corrections is realized, errors found out by users has been fixed.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">This update affects and changes a little bit the general scheme of actions at analysis OFDM. Though these changes are rather insignificant and directed on simplification of procedure of the analysis, nevertheless, we will provide the small article about an operation with the current version in the near future. </span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: large;">Good Luck!</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><br />
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</div>Mariahttp://www.blogger.com/profile/17721818253047519757noreply@blogger.com