A low complexity STAP for reverberation cancellation in active sonar detection

Abstract

One of the major problems for active sonar detector is the presence of reverberation. Since the reverberation has both spatially and temporally varying characteristics, a Space Time Adaptive Processing (STAP) technique is used to adapt the processing according to the varying environment. The contribution of this paper is a low complexity STAP scheme for reverberation cancellation in active sonar detection, making use of polyphase filter architecture based sampling rate conversion.