单矢量水听器二维DOA估计算法  

Estimating two-dimensional angles of arrival using a single vector hydrophone

作　　者：陈建军[1] 

机构地区：[1]中国人民解放军91439部队

出　　处：《声学技术》2012年第3期322-325,共4页Technical Acoustics

摘　　要：为了减小传统声压阵的布阵规模,提高传统声压阵的测量精度,利用矢量水听器的阵列流形特性,使用阵列信号处理的原理进行二维DOA估计。将单个矢量水听器理解成一个声压水听器和三个振速水听器组成的阵列,在无需知道信号先验知识的条件下,分别采用MUSIC算法和ESPRIT算法对多个不相关的单频窄带信号的二维DOA进行了估计。仿真结果表明:在高信噪比情况下,两种算法的精度都很高,优于5阵元的声压平行线阵。利用单矢量水听器能够对信号的二维到达角进行有效估计,远小于传统声压阵的布阵规模。In order to reduce the size of traditional pressure-sensor array and to improve measuring precision, 2-D DOA is estimated by array signal processing theory taking advantages of characteristics of vector hydrophone. A single vector hydrophone can be regarded as an array consisting of a pressure hydrophone and three velocity hydrophones. In this paper, 2-D DOAs of several uncorrelated narrow-band signals are estimated by using MUSIC and ESPRIT algorithms without prior information. Simulations show that precisions of the two algorithms are very good under high SNR and better than that of 5-element pressure-sensor parallel-linear array. By using a single vector hydrophone, two-dimensional direction-of-arrival can be estimated effectively, and its size is much smaller than that of traditional pressure-sensor arrays.

关 键 词：单矢量水听器 二维到达角估计 多重信号分类算法 旋转不变算法 

分 类 号：TB556[理学—物理]