信号相位匹配原理的方位估计性能分析  

Comparison of Energy Criterion with Matrix Norm Criterion in Performance Analysis of DOA Estimation Based on SPMP

作　　者：严胜刚[1] 王惠刚[1] 李志舜[1] 孙进才[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《西北工业大学学报》2005年第5期589-592,共4页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金(60272077);航空科学基金(02F53030)资助

摘　　要：介绍了2种基于信号相位匹配原理(SPM P)的波达方向估计准则——基于能量准则和基于矩阵范数准则。以奇异值分解和矩阵理论为基础,详细分析了两个准则的差异和联系,指出基于矩阵范数准则比基于能量准则具有更好的鲁棒性。同时证明了基于矩阵范数准则和互谱法估计方位之间存在等价关系,分析了矩阵范数准则具有更尖锐空间指向性的原因。计算机仿真结果与理论分析相一致。Our research group has had a number of papers published on a new SPMP （Signal Phase Matching Principle） method for estimating the DOA （Direction of Arriving） of source in array signal processing. Our aim now is to compare two well known criteria——energy and matrix norm to see which is better in performance analysis of DOA estimation based on SPMP. We use SVD （Singular Value Decomposition） to analyze their performance. Computer simulation shows that, in performance analysis of DOA estimation based on SPMP, the matrix norm criterion is better than energy criterion. Matrix norm criterion is better in two aspects： （1） using energy criterion generates pseudo peaks but using matrix norm criterion does not generate such peaks; （2） for the same signal-to-noise ratio such as 0 dB, the estimation variance using matrix norm criterion is sometimes only one tenth that using energy criterion.

关 键 词：相位匹配原理 波达方向 矩阵范数准则 能量准则 

分 类 号：TN911.23[电子电信—通信与信息系统]