均匀直线阵下通用信号模型稳健波束形成算法

doi:10.3969/j.issn.1001-2400.2014.05.028

J4 ›› 2014, Vol. 41 ›› Issue (5): 166-172.doi: 10.3969/j.issn.1001-2400.2014.05.028

均匀直线阵下通用信号模型稳健波束形成算法

刘成城¹;丁永超¹;赵拥军¹;杨静^1,2

(1. 解放军信息工程大学导航与空天目标工程学院，河南郑州 450000；
2. 中国人民解放军72495部队，河南郑州 450000)

收稿日期:2013-06-04 出版日期:2014-10-20 发布日期:2014-11-27
通讯作者: 刘成城
作者简介:刘成城(1986-)，男，解放军信息工程大学博士研究生，E-mail: luckylcc079@126.com．
基金资助:
国家高技术研究发展计划(863计划)资助项目(2011AA7031015)

Robust beamforming algorithm for general signal models based on the ULA

LIU Chengcheng¹;DING Yongchao¹;ZHAO Yongjun¹;YANG Jing^1,2

(1. School of Navigation and Aerospace Object Engineering, Information Engineering University of PLA, Zhengzhou 450000, China;
2. PLA Unit 72495, Zhengzhou 450000, China)

Received:2013-06-04 Online:2014-10-20 Published:2014-11-27
Contact: LIU Chengcheng

摘要/Abstract

摘要：

针对非相干散射信号源稳健波束形成问题，提出了一种均匀直线阵下通用信号模型稳健波束形成算法．该算法通过引入数据共轭重排理论，利用定义的两个转换矩阵，重新构造信号协方差矩阵，给出了最优权矢量的实值闭式表达式，减少了算法的计算复杂度．仿真分析了期望信号信噪比、指向误差、快拍数及失配约束参数对输出信干噪比的影响．仿真实验表明，通过对接收数据的共轭重排再利用，提高了算法在快拍数有限、存在有用信号失配及其他失配等非理想条件下的输出性能．

关键词: 波束形成, 均匀直线阵, 通用信号模型, 数据共轭重排

Abstract:

For the robust adaptive beamforming problem of incoherently scattered signals,a robust beamforming algorithm for general signal models based on the uniform linear array (ULA) is proposed. By introducing the conjugate data rearrangement method, two transformation matrices are defined to reconstruct the signal covariance matrices. Based on the new signal covariance matrices, the proposed algorithm gives a real valued close-form solution for the optimum weight vector to reduce the computational complexity. Then, the influences of the Signal-Noise-Ratio, snapshots, look direction errors and mismatch constraint parameters on the output Signal-Interference-Noise-Ratio are discussed in detail. The conjugate data is rearranged and reused in the new covariance matrix,so that the performance is obviously improved under the conditions of a limited number of snapshots, the severe signal mismatch and so on. Simulations illustrate the effectiveness of the proposed method.

Key words: beamforming, uniform linear array, general signal models, conjugate data rearrangement

中图分类号:

TN911.7

刘成城;丁永超;赵拥军;杨静. 均匀直线阵下通用信号模型稳健波束形成算法[J]. J4, 2014, 41(5): 166-172.

LIU Chengcheng;DING Yongchao;ZHAO Yongjun;YANG Jing2. Robust beamforming algorithm for general signal models based on the ULA[J]. J4, 2014, 41(5): 166-172.

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均匀直线阵下通用信号模型稳健波束形成算法

Robust beamforming algorithm for general signal models based on the ULA

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