基于盖氏圆准则的相关信源数估计研究  

Research on Gerschgorin radii estimator of coherent signals

作　　者：胡隽[1] 

机构地区：[1]中国科学院声学研究所,北京100080

出　　处：《计算机工程与应用》2007年第17期185-188,201,共5页Computer Engineering and Applications

基　　金：国家高技术研究发展计划(863) (the National High- Tech Research and Development Plan of China under Grant No.2005AA611020)

摘　　要：针对均匀线阵提出了一种适用于小阵列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不减少阵列有效孔径的前提下,仍然可以对有相关性的信源数得到准确估计。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信号的检测中,取得了比较好的效果。In order to estimate the number of coherent signals more effectively,proposes a Gersehgorin radii estimator that is designed for small array.This method has been proved in theory and applied successfully in the signal processing of shallow water Batbymetric Side-scan Sonar System（BSSS） whose array is small.In the Qiandao lake test of BSSS,this Gerschgor/n radii estimator could detect the false signal of tail flow of boats effectively with less computer burden than that based on spatial smoothing and without cutting off the array aperture.

关 键 词：信源数估计 盖氏圆准则 测深侧扫声纳 DOA估计 

分 类 号：TN911.23[电子电信—通信与信息系统]