Adaptive detection of moving signal using shallow sea hydroacoustic data

The problem of weak moving signal detection and tracking in the presence of strong interference is investigated using the real data of experiment in the Baltic Sea (September 1990) with an underwater horizontal receiving array of 64 hydrophones. The authors employ three very simple adaptive beam-forming algorithms for signal detection and tracking. The signal-to-interference power ratio (SIR) threshold of signal detection was obtained by a special technique, which allows to examine the interference suppression algorithms with change the SIR in consecutive order. The results of real data processing show that the SIR threshold is about -30 dB