基于空时处理的稳健自适应波束形成算法  

A Robust Adaptive Beamforming Algorithm Based on Space-Time Processing

作　　者：任超[1] 吴嗣亮[1] 王菊[1] 李加琪[1] 

机构地区：[1]北京理工大学信息科学技术学院电子工程系,北京100081

出　　处：《电子与信息学报》2009年第6期1381-1385,共5页Journal of Electronics & Information Technology

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。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.

关 键 词：天线 空时自适应 波束形成 导向矢量 干扰抑制 

分 类 号：TP911.2[自动化与计算机技术]