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2017-10-04

DOA Estimation with Sparse Array Under Unknown Mutual Coupling

By Sheng Liu, Jing Zhao, and Zhengguo Xiao
Progress In Electromagnetics Research Letters, Vol. 70, 147-153, 2017
doi:10.2528/PIERL17081701

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.

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
http://www.jpier.org/PIERL/pier.php?paper=17081701

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