基于反对角单位阵的窄带多径信号接收波束形成算法

丁永超; 刘成城; 赵拥军; 刘亚奇

doi:10.12000/JR14012

基于反对角单位阵的窄带多径信号接收波束形成算法

doi: 10.12000/JR14012

(信息工程大学导航与空天目标工程学院郑州 450001)

基金项目:

国家高技术研究发展计划(863 计划)(2012AA7031015)资助课题

详细信息

作者简介:
丁永超(1988-)，男，河南漯河人，信息工程大学硕士生，研究方向为阵列信号处理。E-mail:playcding@163.com 刘成城(1986-)，男，江苏盐城人，信息工程大学博士生，研究方向为阵列信号处理、目标探测与识别。E-mail:lucklcc079@126.com 赵拥军(1964-)，男，河南新乡人，信息工程大学教授，博士生导师，研究方向为阵列信号处理及雷达信号处理。E-mail:zhaoyjzz@163.com 刘亚奇(1990-)，男，河南商丘人，信息工程大学硕士生，研究方向为阵列信号处理。E-mail:yuyang911026@163.com

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出版历程
- 收稿日期: 2014-01-17
- 修回日期: 2014-03-09
- 网络出版日期: 2015-04-28

Narrowband Multipath Signal Reception Beamforming Algorithm Based on Anti-diagonal Unit Matrix

(College of Navigation & Aerospace Engineering, Information Engineering University, Zhengzhou 450001, China)

摘要

摘要: 针对多径环境下传统Capon 波束形成器性能下降的问题，该文首先分析了期望信号对消的原因：对应期望信号和多径干扰的阵列输出间的相位差始终在附近变化。然后利用反对角单位阵构造新的阵列接收数据协方差矩阵和导向矢量，并根据最小方差无畸变(MVDR)准则求取最优加权矢量进行阵列输出。该算法无需估计多径和非相关干扰信号的来向，且可以通过调整选取的阵元个数获得更优的阵列输出性能。仿真实验表明该文算法的性能优于传统Capon 和多径信号接收类算法。
- 波束形成 /
- 多径 /
- 反对角单位阵 /
- 相位差
Abstract: In multipath environment, the conventional Capon beamformer suffers from signal cancellation mainly because of the variation in phase differences (near ) between the array output corresponding to the signal of interest and multipath interferences. To solve this problem, a novel beamforming method for multipath signal reception is proposed. This method uses an antidiagonal unit matrix to construct a new covariance matrix and a constrained steering vector. Then, the weighting vector is obtained based on the minimum variance distortionless response criterion and the array output is performed. The proposed method does not have to estimate the direction of arrival of multipath interferences and uncorrelated interferences; moreover, the array output can improve by adjusting the number of array elements. The simulations demonstrate the superior performance of the proposed method over the conventional Capon and multipath signal reception methods.
- Beamforming /
- Multipath /
- Anti-diagonal unit matrix /
- Phase difference

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参考文献(13)

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