OFDM: MIL-STD-188-110A 16 Channels

MIL-STD-188-110A 16 Channels

Br-75, Sh-110, 16 Channels +1 Pilot, pi/4 DQPSK

The record of this signal is here.

Author: SergUA6

Band Width ~2000-2100 Hz

Low Range ~570 Hz, shift is possible, recieving in SSB

Baud Rate 75 Hz

n-Ary (PSK/MPSK) pi/4 DQPSK

Count of Carriers 16 + 1 Pilot

Step between carriers 110 Hz

Pilot tone(s) ~624 Hz,shift is possible, recieving in SSB

RX mode SSB

Sonograms:

pic.1 Generall view

pic.2 Detalization

pic.3 Speed of manipulation in the channel

Diagrams:

pic.4 Phase constellation, the lower(bottom) channel

MIL-STD-188-110A 16 Channels - The representative of NATO. It is known enough signal, all parametres are defined easily, there shouldn't be any problems with an identification. Features of this record is that PSK-2 is used in all channels, within the limits of the main manipulation pi/4 DQPSK ofcourse.