The cascaded time-space reverberation suppressing method based on primary component analysis

The performance of detecting weak targets is not fine for active sonar by using the cascaded time-space adaptive method. Based on which, this paper presents a modificed cascaded time-space adaptive method. The new method enhances the performance of active sonar detecting weak targets greatly by means of ODN narrow notch filter that is carrid out by the technology of reverberation primary component analysis. The sea trial results to verify its effectiveness are presented.