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

阵元位置误差校正Toeplitz预处理算法

杨洁¹;刘聪锋²

(1. 西安邮电学院通信与信息工程学院，陕西西安 710121;
2. 西安电子科技大学电子对抗研究所，陕西西安 710071)

收稿日期:2010-03-24 出版日期:2011-04-20 发布日期:2011-05-26
通讯作者: 杨洁
作者简介:杨洁(1976-)，女，高级工程师，硕士，E-mail: yangjie@xupt.edu.cn．
基金资助:
国家自然科学基金资助项目(61072107)西安邮电学院中青年科研基金资助项目(109-0412);博士后基金资助项目(20090451252);陕西省工业攻关资助项目(2009K08-31);中央高校基本科研业务费专项基金资助项目(JY10000902025)

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

摘要/Abstract

摘要：

MUSIC等为代表的高分辨DOA算法通常以精确已知的理想阵列模型为前提，由于实际天线阵列的位置误差必然存在，因此算法的性能必将受到严重的影响，甚至失效．本文通过深入分析阵列位置误差对阵列接收数据协方差矩阵的影响，提出了一种基于对接收数据协方差矩阵作Toeplitz预处理来校正阵列位置误差的方法，同时结合特征值重构方法进行联合迭代运算，以便更加有效地抑制阵列位置误差的影响．理论分析和计算机仿真表明，所提方法能够有效地改善MUSIC 算法的稳健性，提高多目标信号的角度分辨能力．

关键词: 阵列位置误差校正, 子空间类算法, MUSIC算法, Toeplitz处理

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

杨洁;刘聪锋. 阵元位置误差校正Toeplitz预处理算法[J]. J4, 2011, 38(2): 93-98.

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

参考文献

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[2]	韩芳明;张守宏;潘复平. 阵列误差对MUSIC算法性能的影响与校正[J]. J4, 2003, 30(5): 585-590.

阵元位置误差校正Toeplitz预处理算法

Array location error calibrating algorithm based on toeplitz pre-processing

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