基于共轭倒序阵盖氏圆准则的相关信源数估计研究  

Research on the Gerschgorin Radii Estimator of Coherent Signals Based on Reverse Conjugate Array

作　　者：胡隽[1] 吴南润[1] 

机构地区：[1]中国科学院声学研究所,北京100080

出　　处：《探测与控制学报》2007年第3期16-20,共5页Journal of Detection & Control

基　　金：国家863项目基金资助(2005AA611020)

摘　　要：针对均匀线阵提出了一种基于共轭倒序阵去相关处理的盖氏圆准则应用方法。这种方法使盖氏圆准则在信号之间有相关性的情况下,仍然可以对信源数有准确的估计。从理论上证明了这个方法的可行性,并且把这个方法运用到浅水高分辨率测深侧扫声纳对附近船只尾流干扰的检测中,取得了比较好的效果。In order to estimate the number of coherent signals more effectively, a Gerschgorin radii estimator which is based on the reverse conjugate array was proposed. This method is proved in theory in this paper and has been applied successfully in the signal processing of shallow water Bathymetric Side-scan Sonar System （BSSS）. In the Qiandao lake test of BSSS, the Gerschgorin radii estimator based on reverse conjugate array could detect the false signal of tail flow of boats effectively with less computer burden than that based on spatial smoothing technique.

关 键 词：信源数估计 盖氏圆准则 共轭倒序阵 DOA估计 

分 类 号：TN911.23[电子电信—通信与信息系统]