A novel wideband DOA estimator based on Khatri-Rao subspace approach

被引：25

作者：

Feng, Dahang ^{[1
]}

Bao, Ming ^{[1
]}

Ye, Zhongfu ^{[2
]}

Guan, Luyang ^{[1
]}

Li, Xiaodong ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Acoust, Key Lab Noise & Vibrat Res, Beijing 100190, Peoples R China

[2] Univ Sci & Technol China, Dept Elect Engn & Informat Sci, Hefei 230027, Anhui, Peoples R China

来源：

SIGNAL PROCESSING | 2011年 / 91卷 / 10期

关键词：

Direction-of-arrival (DOA) estimation; Wideband source; Khatri-Rao subspace; SIGNALS; TOPS;

D O I：

10.1016/j.sigpro.2011.04.014

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

080906 [电磁信息功能材料与结构]; 082806 [农业信息与电气工程];

摘要：

A novel DOA estimation method for uncorrelated wideband sources named focusing Khatri-Rao subspace method (FKR) is proposed based on coherent signal-subspace method (CSM) and Khatri-Rao (KR) subspace. Compared with the conventional CSM that simply averages the covariance matrices of different frequency bins after focusing, FKR transforms the covariance matrices into a higher dimensional matrix through KR product. This method has three major advantages: (1) it achieves a higher resolution than CSM, (2) the root mean square error of DOA estimation from FKR is smaller than that of CSM when the initial angles are inaccurate and (3) it performs well even when the number of sensors is reduced to about half of the sources. The performance of the FKR method is demonstrated and analyzed through the computer simulations. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2415 / 2419

页数：5

共 12 条

[1]

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