Vol. 51

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2016-10-30

Efficient Localization Algorithm of Mixed Far-Field and Near-Field Sources Using Uniform Circular Array

By Bing Xue, Guangyou Fang, and Yi-Cai Ji
Progress In Electromagnetics Research M, Vol. 51, 139-146, 2016
doi:10.2528/PIERM16082401

Abstract

An efficient algorithm based on high-order cumulant is addressed for the scenarios where both far-field and near-field narrow-band signals may exist synchronously. The first matrix built by four-order cumulant is utilized to estimate the two dimensional direction-of-arrivals (DOAs) using the orthogonal projection matrix of the signal subspace and the virtual steering matrix. Then, the second matrix built by four-order cumulant is decomposed to get the noise subspace using the eigen decomposition. Meanwhile, a virtual steering matrix is used to distinguish far-field signals (FFSs) from near-field signals (NFSs). And one-dimensional MUSIC algorithm is used to estimate the range of the NFSs. Compared to the TSMUSIC, the proposed algorithm can provide high resolution for the DOAs. In addition, there is higher accuracy for the DOA of NFS in the proposed algorithm than that in TSMUSIC and in TSMD. Simulation results are carried out to certify the performance of the proposed algorithm.

Citation


Bing Xue, Guangyou Fang, and Yi-Cai Ji, "Efficient Localization Algorithm of Mixed Far-Field and Near-Field Sources Using Uniform Circular Array," Progress In Electromagnetics Research M, Vol. 51, 139-146, 2016.
doi:10.2528/PIERM16082401
http://www.jpier.org/PIERM/pier.php?paper=16082401

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