DOA estimation with uniform linear arrays in the presence of mutual coupling via blind calibration

被引：29

作者：

Liu, Zhangmeng ^{[1
]}

Huang, Zhitao ^{[1
]}

Wang, Fenghua ^{[1
]}

Zhou, Yiyu ^{[1
]}

机构：

[1] Natl Univ Def Technol China, Dept Elect Sci & Engn, Changsha 410073, Hunan, Peoples R China

来源：

SIGNAL PROCESSING | 2009年 / 89卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Array signal processing; Direction-of-arrival estimation; Mutual coupling; Blind calibration; Uniform linear array; DIPOLE ARRAY; COMPENSATION; ESPRIT;

D O I：

10.1016/j.sigpro.2009.01.017

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：

Direction-of-arrival (DOA) estimation in the presence of mutual coupling is a widely studied problem in the field of array signal processing. Most of the previous methods tried to estimate the DOAs by compensating the effect of mutual coupling with measured antenna impedances, which is not an effective way because the impedances are often time-variant. A blind calibrating method is proposed in this paper to deal with the problem of DOA estimation with uniform linear arrays in the presence of mutual coupling. This method exploits the complex symmetric Toeplitz form of the mutual coupling matrix (MCM) of unitary linear arrays (ULA), and transforms conventional direction finding methods from testing the orthogonality between the signal and noise subspaces to checking the rank deficiency of a projected matrix, eliminating most of the influence brought in by the effect of mutual coupling. Simulation results are presented to show the satisfying performance of the new method. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：1446 / 1456

页数：11