Remarks on the Spatial Smoothing Step in Coarray MUSIC

被引：445

作者：

Liu, Chun-Lin ^{[1
]}

Vaidyanathan, P. P. ^{[1
]}

机构：

[1] CALTECH, Dept Elect Engn, Pasadena, CA 91125 USA

来源：

IEEE SIGNAL PROCESSING LETTERS | 2015年 / 22卷 / 09期

关键词：

Coprime arrays; nested arrays; sparse arrays; spatial smoothing; OF-ARRIVAL ESTIMATION; CO-PRIME ARRAYS; NESTED ARRAYS; DIMENSIONS; PART II; LESS;

D O I：

10.1109/LSP.2015.2409153

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Sparse arrays such as nested and coprime arrays use a technique called spatial smoothing in order to successfully perform MUSIC in the difference-coarray domain. In this paper it is shown that the spatial smoothing step is not necessary in the sense that the effect achieved by that step can be obtained more directly. In particular, with (R) over tilde (ss) denoting the spatial smoothed matrix with finite snapshots, it is shown here that the noise eigenspace of this matrix can be directly obtained from another matrix (R) over tilde which is much easier to compute from data.

引用

页码：1438 / 1442

页数：5

共 25 条

[1] Positive-definite Toeplitz completion in DOA estimation for nonuniform linear antenna arrays - part II: Partially augmentable arrays [J].