一种宽带非相关信号DOA估计的新方法  

A New DOA Estimate Method for Wideband Incoherent Signals

作　　者：金勇[1] 刘景森[2] 赵建军[1] 

机构地区：[1]河南大学先进控制与智能信息研究所,河南开封475004 [2]河南大学计算中心,河南开封475004

出　　处：《河南大学学报（自然科学版）》2008年第4期406-409,共4页Journal of Henan University:Natural Science

基　　金：河南省自然科学基金项目(0511014300);河南省教育厅自然科学基金项目(2004520014)

摘　　要：介绍一种宽带非相关信号DOA估计的新方法(TOPS),该方法利用信号源各频率段噪声子空间和信号子空间的正交关系对信号源的方位进行估计.TOPS算法与宽带聚焦类算法不同点在于,该方法不需要对信号方位进行预估计.仿真显示该算法的分辨力高,在高信噪比条件下估计性能优越.This paper introduces a new direction-of-arrival estimation algorithm for wideband incoherent signal call test of orthogonality of projected subspaces （TOPS）. This new technique estimates DOA by measuring the orthogonal relation between the signal and the noise subspaces of multiple frequency components of the sources. Unlike the CSM algorithm, the new method does not require any preprocessing for initial values. The simulations show that this new method not only has the ability of high resolution but also good performance at high SNR.

关 键 词：DOA 信号子空间 宽带非相关信号 正交关系 

分 类 号：TN911.7[电子电信—通信与信息系统]