船载水声系统中的阵列信号处理算法研究

Research on array signal processing algorithms in underwater acoustic system

首先分析ICA算法在船载水声系统中的问题,提出改进的cFastICA算法;然后阐述利用cFastICA算法进行复数信号的迭代过程;最后通过与TLS-ESPRIT算法比较,说明本文算法在采样频率较低的情况下角度误差较小,并且在信噪比一定的情况下,受到快拍数的影响较小。

Firstly,this paper analyzed the problem of ICA algorithm in underwater acoustic system.An improved cFastICA algorithm was proposed. In this paper,the iterative process of complex signals using cFastICA algorithm was described in detail. Finally,with the TLS-ESPRIT algorithm,the algorithm in the case of low sampling frequency angle error was small,and in a certain SNR,which was less affected by the number of snapshots.