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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2017-10-04
DOA Estimation with Sparse Array Under Unknown Mutual Coupling
By
Sheng Liu,

    Dr. Sheng Liu

    Big Data Institute

    Tongren University

    China

    Homepage

Jing Zhao,

    Dr. Jing Zhao

    Big Data Institute

    Tongren University

    China

    Homepage

Zhengguo Xiao

    Dr. Zhengguo Xiao

    School of Data Science

    Tongren University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 70, 147-153, 2017
doi:10.2528/PIERL17081701 | Google Scholar

Abstract
In this paper, we propose a direction-of-arrival (DOA) estimation algorithm under unknown mutual coupling with a sparselinear array (SLA). We employ an SLA composed of two uniform linear arrays (ULA), and the element spacing of one of the subarrays is large enough to neglect the effect of the mutual coupling (MC). The forth-order-cumulants (FOCs) of the received data from partial elements of the first subarray and all elements of the second subarrayare exploitedto construct an extended FOC matrix. Then, the DOAs of incident signals are estimated by dealing with the FOC matrix. The array aperture is extended greatly due to the sparsestructure. Hence, the proposed method shows much better performance than some classical blind DOA estimation methods in accuracy and resolution. We also proposed some simulation results to prove the effectiveness of our method.
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Citation
Sheng Liu, Jing Zhao, and Zhengguo Xiao, "DOA Estimation with Sparse Array Under Unknown Mutual Coupling," Progress In Electromagnetics Research Letters, Vol. 70, 147-153, 2017.
doi:10.2528/PIERL17081701
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