TOPS: New DOA estimator for wideband signals

被引：224

作者：

Yoon, YS ^{[1
]}

Kaplan, LM

McClellan, JH

机构：

[1] Samsung Thales Co Ltd, Yongin 449885, South Korea

[2] USA, Res Lab, Adelphi, MD 20783 USA

[3] Georgia Inst Technol, CSIP, Sch Elect & Comp Engn, Atlanta, GA 30318 USA

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2006年 / 54卷 / 06期

关键词：

array signal processing; direction-of-arrival (DOA) estimation; signal subspace method; wideband sources;

D O I：

10.1109/TSP.2006.872581

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：

This paper introduces a new direction-of-arrival (DOA) estimation algorithm for wideband sources called test of orthogonality of projected subspaces (TOPS). This new technique estimates DOAs by measuring the orthogonal relation between the signal and the noise subspaces of multiple frequency components of the sources. TOPS can be used with arbitrary shaped one-dimensional (1-D) or two-dimensional (2-D) arrays. Unlike other coherent wideband methods, such as the coherent signal subspace method (CSSM) and WAVES, the new method does not require any preprocessing for initial values. The performance of those wideband techniques and incoherent MUSIC is compared with that of the new method through computer simulations. The simulations show that this new technique performs. better than others in mid signal-to-noise ratio (SNR) ranges, while coherent methods work best in low SNR and incoherent methods work best in high SNR. Thus, TOPS fills a gap between coherent and incoherent methods.

引用

页码：1977 / 1989

页数：13

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