用干涉式APES算法实现干涉阵盲DOA估计

doi:10.3969/j.issn.1001-2400.2013.01.032

Abstract

Abstract:

An interferometric-like APES algorithm is proposed for blind DOA estimation of interferometric arrays. The number of targets and coarse direction cosine estimates are obtained from the interferometric-like APES spatial spectrum and model-order selection criterion. The fine direction cosine estimates are derived from the phase center's shift of subarrays. A dual-size algorithm is used to resolve the ambiguity in DOA estimation, and then high accuracy and unambiguous DOA estimates are achieved. The proposed approach is a blind DOA estimation method with higher accuracy than MUSIC and dual-size ESPRIT algorithms. Simulation results and real data processing demonstrate high accuracy of DOA estimation of interferometric arrays and the validity and feasibility of the proposed method, which can provide reference for the design of the interferometric array.

Key words: interferometric array, blind direction of arrival estimation, interferometric-like amplitude and phase estimate, Bayesian information criterion, disambiguation

CLC Number:

TN911.7

ZHU Wei;CHEN Baixiao;CHEN Genhua;YANG Minglei. Interferometric array blind DOA estimation using the interferometric-like APES algorithm[J].J4, 2013, 40(1): 189-196.

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Interferometric array blind DOA estimation using the interferometric-like APES algorithm

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