矢量水听器阵列宽带相干信号方位估计研究

Bearing Estimation on Broadband Coherent Signal with Acoustic Vector Sensor Array

摘要:

针对多径条件下相干声源方位估计问题，研究了矢量水听器阵列信号方位估计的 MUSIC 与 ESPRIT 方法，并通过空间重采样推广到宽带信号方位估计中。实船噪声的计算机仿真表明：6 元矢量水听器阵列可以分辨空间间隔不大于 15o 的 2 个目标，并可利用相干信号子空间方法解相干源，在声引信多目标分辨中有应用前景。

关键词:方位估计;高分辨;矢量水听器阵;MUSIC;ESPRIT

Abstract:

Aiming at the problem of high resolution bearing estimation on broadband coherent signal in case of multipath condition，this paper has studied the method of MUSIC and ESPRIT with acoustic vector sensor array. By adopting the spatial resampling method，the bearing estimation of spatial coherent signals can be resolved. Simulation with field measured ship-radiated noise shows that，two targets separated no less than 15o can be resolved with a 6-element acoustic vector sensor array，though they are spatially coherent，which has good application prospect in fuse multi-target resolution.

Key words:bearing estimation;high resolution;acoustic vector sensor array;MUSIC;ESPRIT