вторник, 29 сентября 2009 г.

PSK: Arcotel MAHRS 2400 EADS/RACOMS PSK-8, ALE

Arcotel MAHRS 2400 EADS/RACOMS
PSK-8, ALE

Author: SergUA6 6.0
Band Width ~2800-2900 Гц
Low Range 300-400 Гц
Baud Rate 2400 Гц
n-Ary PSK/MPSK PSK-8
Carrier frequency 1800 Гц
RX mode SSB

The signal is here

Sonograms:

pic.1 General view

pic.2 Manipulation speed


Pictures


pic.3 Phase constellation



ARCOTEL MAHRS 2400 EADS/RACOMS - It Sounds similar to one of LINK-11 variants, so it is possible to confuse these two signals.
At attentive studying it is visible that it is psk-8 serial. on such short signals it is difficult to receive the qualitative picture on the phase plane, but if to run whole file, that all is easily clarified. The presence of the short PSK-2 fragments in the begining of each pachcage with duration 60 m, is is typical.