Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/98237
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Type: Journal article
Title: DOA estimation under unknown mutual coupling and multipath with improved effective array aperture
Author: Wang, Y.
Trinkle, M.
Ng, B.
Citation: Sensors (Switzerland), 2015; 15(12):30856-30869
Publisher: MDPI AG
Issue Date: 2015
ISSN: 1424-8220
1424-8220
Statement of
Responsibility: 
Yuexian Wang, Matthew Trinkle and Brian W.-H. Ng
Abstract: Subspace-based high-resolution direction of arrival (DOA) estimation significantly deteriorates under array manifold perturbation and rank deficiency of the covariance matrix due to mutual coupling and multipath propagation, respectively. In this correspondence, the unknown mutual coupling can be circumvented by the proposed method without any passive or active calibration process, and the DOA of the coherent signals can be accurately estimated accordingly. With a newly constructed matrix, the deficient rank can be restored, and the effective array aperture can be extended compared with conventional spatial smoothing. The proposed method achieves a good robustness and DOA estimation accuracy with unknown mutual coupling. The simulation results demonstrate the validity and efficiency of the proposed method.
Keywords: DOA estimation; coherent signals; mutual coupling; matrix reconstruction
Rights: © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
RMID: 0030040625
DOI: 10.3390/s151229832
Grant ID: http://purl.org/au-research/grants/arc/LP0882191
Appears in Collections:Electrical and Electronic Engineering publications

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