基于四阶矩的单矢量水听器多声源定位算法

Multi-acoustic source localization algorithm based on four order moments for single vector hydrophone

摘要:

为了克服基于四阶累积量的矢量水听器声源定位算法的计算复杂度高、运算量大、定位精度不高等问题，提出一种基于四阶矩的单矢量水听器多声源定位算法.该算法利用信号四阶矩的性质，将单矢量水听器阵元数和声源数进行虚拟扩展，从而得到更多的多声源定位信息；通过提取有效阵元的方法减少了冗余，利用搜索峰值方法得到期望的多声源方位.理论分析和实验结果表明，该算法能够有效降低了计算量、提高了定位精度，克服了基于高阶累积量的矢量水听器定位算法的不足.

Abstract:

In order to reduce the computational complexity of the fourthorder cumulants based vector hydrophone acoustic source location algorithm and improve its positioning accuracy，a single vector hydrophone acoustic source location algorithm based on fourthorder moments is proposed.In this proposed algorithm，the numbers of single vector hydrophone array and source are virtually expanded based on the nature of fourthorder moments to obtain more multiacoustic source location information，the redundancy and computation loads are reduced by using extract effective array element method，and the multiacoustic source locations can be obtained by using the search peak.The theoretical analyses and experimental results show that， the proposed algorithm can effectively reduce the computational load, improve the positioning accuracy and overcome the shortage of the higher order cumulants based vector hydrophone source location algorithm.