基于二元矢量阵的相干源分辨性能研究  

Research into The Coherent Sources Resolution Performance Based on Dualistic Vector Array

作　　者：张锴[1] 

机构地区：[1]中国电子科技集团公司第20研究所,西安710068

出　　处：《舰船电子对抗》2015年第2期67-71,共5页Shipboard Electronic Countermeasure

摘　　要：相干源的存在使矢量阵的高分辨方位估计性能严重恶化。分析了单矢量传感器的阵列流型,结合空间平滑算法的应用条件,给出了基于二元矢量阵的最小方差无失真响应(MVDR)和多重信号分类(MUSIC)解相干算法,研究了算法的性能。理论分析和仿真实验证明该算法可实现对相干源的到达方向(DOA)估计,在相同信噪比条件下,相较于MVDR算法、MUSIC算法具有更好的方位分辨力,受到相干源之间方位夹角的影响更小,而且对相干源之间的强度差异不敏感。The existence of coherent sources makes the high-resolution azimuth estimation performance get worse badly.This paper analyzes the array manifold of single vector sensor,combining the application conditions of spatial smoothing algorithm,presents the de-correlation algorithm of minimum variance distortionless response（MVDR）and multiple signal classication（MUSIC）based on dualistic vector array,studies the algorithm performance.The theory analysis and simulation experiment prove that the direction of arrival（DOA）estimation of coherent sources can be realized by the algorithm,comparing with the MVDR algorithm and MUSIC algorithm,this algorithm has better azimuth resolution,is affected at the azimuth angular separation between coherent sources weakly and insensitive on the diversity between coherent sources in the same signal noise ratio.

关 键 词：二元矢量阵 相干源 最小方差无失真响应 到达方向估计 

分 类 号：TB566[交通运输工程—水声工程]