Br - 200, Shift - 100
The example of the signal is here
Author: SergUA6
Band Width: 300 Hz
Low Range: floating
Baud Rate: 200 Hz
n-Ary (PSK/MPSK): conditionally 4
Count of Carriers: 2 indistinguishable frequency of manipulaion
Step between carriers: 100 Hz
The modulation, in which the signal was recieved )RX mode): Source I/Q record
Sonograms:
pic.1 The group of signals. General view.
pic.1 The group of signals. General view.
pic.2 the graphical spectrum
pic.3 speed of manipulation signal 4
Diagrams
pic.4 MSK in 2 and 4 degree
pic.5 the frequency manipulation spacing
pic.6 MSK on the Phase Plane
pic.7 MSK after frequency detector
VLF, MSK, Submarine broadcast, Anthorn station(?) GBK(?) The VLF range is very rich with curious enough signals. It seems like the group of signals is managed to be identified. There are lot of information in we-bsearchers by the word "Anthorn", and also the infromation about frequency 19.6khz is mentioned. In this record this is the signal number one. All five signals have the classical set of parametres for MSK: the spectrum is equal to 1.5*Br,characteristic bell-looking-like shape, and others. Pay attention that the carrier in the fourth degree it is expressed very poorly, sometimes it is almost not visible at all.
There shouldn't be problems with an identification of modulation, but there are some problems with determination of belongings, because the signals are faceless enough (encryption) and without features, that does not eliminate a possible error.
MSM team
There shouldn't be problems with an identification of modulation, but there are some problems with determination of belongings, because the signals are faceless enough (encryption) and without features, that does not eliminate a possible error.
MSM team