DOA Estimation of Coherent Signals on Uniform Circular Array in the Presence of Mutual Coupling

被引：0

作者：

Li Shuai ^{[1
]}

Chen Hui ^{[1
]}

Cong Haixia ^{[2
]}

机构：

[1] Early Warning Acad, Key Res Lab, Wuhan, Peoples R China

[2] Wuchang Polytech Coll, Dept Style & Gen Educ, Wuhan, Peoples R China

来源：

PROCEEDINGS OF 2016 8TH IEEE INTERNATIONAL CONFERENCE ON COMMUNICATION SOFTWARE AND NETWORKS (ICCSN 2016) | 2016年

关键词：

uniform circular arrays; coherent signals; direction-of-arrival; mutual coupling;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, a DOA (direction of arrival) estimation method of coherent signals based on uniform circular arrays, in the presence of sensor mutual coupling, is proposed. Firstly, the array considering mutual coupling is transformed into a virtual array of geometric proportion through preprocessing. Then a new covariance matrix is reconstructed with the eigenvector corresponding to the largest eigenvalue, which consists of all signals' information. In addition, the new signal covariance matrix is diagonal, which means a complete de-correlation. Finally, DOA can be estimated in conjunction with MUSIC algorithm based on the new covariance matrix. Compared with conventional methods, it has higher angular resolution and lower SNR (signal to noise ratio) threshold. Besides, this method also works well in the presence of mutual coupling between sensors.

引用

页码：86 / 90

页数：5

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