基于空时处理的稳健自适应波束形成算法

任超; 吴嗣亮; 王菊; 李加琪

doi:10.3724/SP.J.1146.2008.00473

基于空时处理的稳健自适应波束形成算法

doi: 10.3724/SP.J.1146.2008.00473

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出版历程
- 收稿日期: 2008-04-22
- 修回日期: 2008-07-21
- 刊出日期: 2009-06-19

A Robust Adaptive Beamforming Algorithm Based on Space-Time Processing

摘要

摘要: 在自适应天线阵抗干扰的一些应用环境中，往往需要自适应天线方向图在对准干扰的位置形成宽零陷从而增强算法的稳健性。该文从宽带信号模型出发，通过对扰动干扰方向上空时二维导向矢量的分析，修正了权值训练期间得到的宽带干扰协方差矩阵，推导出一种针对宽带信号的基于空时处理结构的宽零陷波束形成算法，该方法有效地实现宽带干扰的零陷加宽，提高了宽带波束形成算法的稳健性。
- 天线; 空时自适应; 波束形成; 导向矢量; 干扰抑制
Abstract: It is often desired to widen the interference null width to enhance the robustness of the algorithm in some real anti-jamming environments. A novel space-time adaptive processing algorithm which broadens the null width is proposed in this paper. The proposed method modifies the covariance matrix of wideband jamming based on the analysis of the model of wideband signal and the rotation of the space-time steering vector. When the data mismatch is smaller, the broadening nulling algorithm can effectively suppress interference, which increases the robustness of the algorithm.

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