强干扰下的盲波束形成算法  

Blind Beamforming Algorithm in Strong Jamming

作　　者：陈晋央[1] 吴瑛[1] 

机构地区：[1]解放军信息工程大学信息工程学院,河南郑州450002

出　　处：《雷达科学与技术》2011年第2期150-154,159,共6页Radar Science and Technology

摘　　要：针对恒模波束形成算法在干扰信号功率较强的情况下不能收敛到期望信号的问题,提出了一种基于独立分量分析的盲波束形成算法。该算法应用独立分量分析的方法来分离阵列接收信号,通过期望信号来向约束分离向量使其收敛到期望信号,算法在强干扰信号情况下能够收敛到期望信号、对非恒模信号有效并且运算量适中。理论分析和仿真实验表明提出的算法在强干扰和幅相误差存在的情况下相比恒模算法性能优越。The blind beamforming algorithm based on constant modulus cannot converge to desired signal in strong jamming. A beamforming algorithm based on independent component analysis is presented to solve this problem. This algorithm applies the method of independent component analysis（ICA） to separate the array signals. The direction of arrival（DOA） of desired signal is used to constrain the separation vector, so as to make it converge to desired signal in strong jamming. The algorithm is effective for non-constant modulus signals with moderate computing complexity. The theoretical analysis and simulation results show that the proposed algorithm has more predominant performance than constant modulus algorithm when strong jamming and gain-phase errors exist.

关 键 词：波束形成 独立分量分析 恒模算法 相关系数 

分 类 号：TN911.7[电子电信—通信与信息系统] TN957[电子电信—信息与通信工程]