基于JADE算法的矢量水听器阵列信号盲估计研究

标量声压水听器线阵无法估计信号的二维到达角（方位角和俯仰角）,并且对来波方向相同的信号无法分辨.针对这一情况,文中引入盲信号处理理论,将JADE（特征矩阵联合近似对角化）算法与矢量水听器阵列技术相结合,提出了一种新的阵列信号盲估计算法.该算法应用在结构简单的矢量水听器线阵上,在信号方向矢量没有任何先验知识情况下,对阵列流型矩阵进行盲估计,进而估计出源信号的频率和二维到达角,并实现对来波方向相同信号的辨识.仿真实验证明了算法的有效性.

Blind Signal Estimation Based on JADE Algorithm for an Vector Hydrophone Array

The traditional hydrophone array is unable to estimate the 2-D direction of arrival angle of sources,and fail to estimate the sources when they impinging from an identical direction.In response to this situation,the theory of blind signal processing is introduced in this paper.A new algorithm combining the JADE （joint approximate diagonalization of eigen-matrices） algorithm and the technique of vector hydrophone array is proposed to estimate the array signal.With no prior assumption about the structure of steering vector,the array manifold is estimated.And then,the frequency and direction of sources can be estimated by the proposed algorithm.Meanwhile,sources can be identified even if they impinging from an identical direction.Simulation results verify the efficacy of the proposed algorithm.