关键词: 空时自适应处理, 混响抑制, 协方差矩阵

Abstract: Reverberation is a special interference which generated with sonar system transmit signal and has similarity spectrum structure with it. When the sonar platform moving, different direction reverberation has different Doppler, then the reverberation frequency spectrum will extend in a large range mixing with signal spectrum.  So using the traditional moving platform self compensation technology only in frequency domain is hard to suppress  this large range reverberation. According to this problem, a space time adaptive method is applied to utilize the reverberation space time characteristics, to get the adaptive weight coefficient in the condition of minimization reverberation interference meanwhlie ensuring the signal is not lossed. The validity of this method is proofed by the simulation result.

Key words: space-time adaptive processing, reverberation suppressing, covariance matrix