Automatic identification system receiver and satellite payload comprising the same

摘要

An Automatic Identification System - AIS - receiver comprising at least one processing section (PS1, PS2) for synchronizing, demodulating and detecting AIS messages contained in a received signal, said processing steps being carried out separately for a plurality of frequency sub-bands (SB1, SB2, SB3) spanning an AIS channel (CH1, CH2);
the receiver being characterized in that :
- said sub-bands overlap with each others; and
- said or each processing section is adapted for synchronizing, demodulating and detecting said AIS messages within each subband on the basis of timing error and carrier frequency estimations obtained from filtered replicas of said received signal, propagating along respective auxiliary signal paths.