声矢量阵列的求根MUSIC算法及其性能分析

Root-Music Algorithm Based on Acoustic Vector Sensor Array and Performance Analysis

在传统声压传感器阵列的求根MUSIC算法的基础上,提出了基于矢量传感器阵列的求根MUSIC算法及其修正形式,通过接收阵列信号的空间谱,选择合适的引导方位,可实现声源的波达方向(DOA)估计.理论推导和仿真实验表明,采用均匀矢量传感器线性阵列的求根MUSIC算法在低信噪比、小快拍数情况下的估计性能要优于传统声压传感器阵列的求根MUSIC算法,同时该算法的计算量远远小于矢量传感器列的MUSIC算法.

According to the traditional root-music algorithm based on acoustic pressure sensor array, we put forward a new root-music algorithm based on acoustic vector sensor array, and select appropriate lead angle by spatial spectrum of array signal to realize the direction of arrival estimation. Theory analysis and simulation experiment of an uniform line array show that the performance of the new rootmusic algorithm is better than the traditional one in low SNR, few snapshot, and the simple calculation.