Improved 2D direction of arrival estimation with a small number of elements in UCA in the presence of mutual coupling

被引：11

作者：

Jiang, Guo-jun ^{[1
]}

Dong, Ying-ning ^{[1
,2
]}

Mao, Xing-peng ^{[1
,2
]}

Liu, Yong-tan ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, Sch Elect & Informat Engn, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Collaborat Innovat Ctr Informat Sensing & Underst, Harbin, Peoples R China

来源：

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2017年 / 71卷

关键词：

2D DOA estimation; Mutual coupling; Beamspace transformation; Uniform circular array; Rank reduction theory (RARE); UNIFORM CIRCULAR ARRAYS; DOA ESTIMATION; ROOT-MUSIC; COMPENSATION;

D O I：

10.1016/j.aeue.2016.10.012

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：

With a small number of elements in uniform circular arrays (UCAs), the performance of beamspace transformation (BT) based methods for 2D direction-of-arrival (DOA) estimation in the presence of mutual coupling suffers serious degradation. The performance breakdown is associated with the residual term which is introduced by the BT. To solve this problem, a novel algorithm which modifies the beamspace data is proposed in this paper. Based on the estimated azimuth angles obtained by a UCA-RARE-like method and the estimated elevation angles obtained by a new searching method, the beamspace data is iteratively revised by removing its residual component. Thus, unbiased 2D DOA estimates can be obtained depending on the revised beamspace data. Simulation results are given to verify the effectiveness of the proposed algorithm and a comparison is made with results from existed methods. (C) 2016 Elsevier GmbH. All rights reserved.

引用

页码：131 / 138

页数：8

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