Near-Field Source Localization Using a Special Cumulant Matrix

Han CUI  Gang WEI  

IEICE TRANSACTIONS on Communications   Vol.E95-B   No.2   pp.623-626
Publication Date: 2012/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.623
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
near field,  cumulant,  array signal processing,  

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A new near-field source localization algorithm based on a uniform linear array was proposed. The proposed algorithm estimates each parameter separately but does not need pairing parameters. It can be divided into two important steps. The first step is bearing-related electric angle estimation based on the ESPRIT algorithm by constructing a special cumulant matrix. The second step is the other electric angle estimation based on the 1-D MUSIC spectrum. It offers much lower computational complexity than the traditional near-field 2-D MUSIC algorithm and has better performance than the high-order ESPRIT algorithm. Simulation results demonstrate that the performance of the proposed algorithm is close to the Cramer-Rao Bound (CRB).