阵元位置误差校正Toeplitz预处理算法

doi:10.3969/j.issn.1001-2400.2011.02.017

J4 ›› 2011, Vol. 38 ›› Issue (2): 93-98.doi: 10.3969/j.issn.1001-2400.2011.02.017

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Array location error calibrating algorithm based on toeplitz pre-processing

YANG Jie¹;LIU Congfeng²

(1. School of Communication and Info., Xi'an Univ. of Posts and Telecommunications, Xi'an 710121， China;
2. Research Inst. of Electronic Countermeasures, Xidian Univ., Xi'an 710071， China)

Received:2010-03-24 Online:2011-04-20 Published:2011-05-26
Contact: YANG Jie E-mail:yangjie@xupt.edu.cn

Abstract

Abstract:

High resolution array direction finding techniques (such as the MUSIC algorithm) are usually used under the assumption that the array sensor locations are known precisely. However, the sensor location uncertainties always exist in practical circumstances. When the array sensor locations are randomly perturbed,the performance of the class algorithm then tends to deteriorate greatly and even becomes invalid. In this paper, a method based on the Toeplitz pre-processing of the covariance matrix is proposed. In order to enhance the capabilities further, an iterative algorithm is proposed to iteratively reconstruct both the Toeplitz and eigenstructure from the covariance matrix. Theoretical analysis and simulation indicate that the proposed algorithm improves the robustness of the MUSIC algorithm efficiently, as well as the multi-signal direction resolution.

Key words: array location error calibration, subspace algorithm, MUSIC algorithm, Toeplitz processing

YANG Jie;LIU Congfeng. Array location error calibrating algorithm based on toeplitz pre-processing[J].J4, 2011, 38(2): 93-98.

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Array location error calibrating algorithm based on toeplitz pre-processing

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