一种能有效接收相干信号的波束形成技术  

New Beamforming for Coherent Signals in the Presence of Uncorrelated Interferences

作　　者：赵永波[1] 水鹏朗[1] 张守宏[1] 

机构地区：[1]西安电子科技大学雷达信号处理重点实验室,陕西西安710071

出　　处：《电子学报》2006年第6期1016-1019,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60272058);雷达信号处理国防科技重点实验室基金(No.51431020105ZS0102)

摘　　要：在假设事先估计得到不相关干扰信号方向的条件下,本文提出了一种能有效接收相干信号的波束形成方法.该方法首先利用估计得到的不相关干扰信号的方向构造变换矩阵,然后基于变换矩阵估计得到期望信号和相干干扰信号的合成导向矢量,最后利用得到的合成导向矢量和阵列相关矩阵求得波束形成的权矢量.计算机仿真结果证实本文所提方法基本上达到理论上的最优性能,且能快速收敛.A new three-stage beamformer is proposed for reception of coherent signals with the assumption that the directions-of-arrivals （DOA＇s） of the uncorrelated inteffeters have been estimated a priori. First,the estimated DOA of the uncorrelated interferers are used to construct a transformation matrix. Secondly, the composite vector of the coherent sources is estimated based on the transformation matrix. Finally, using the estimated composite vector and the array correlation matrix,adaptive beamforming is performed. Experimental results show that the proposed beamformer almost achieves the optimum performance and rapidly converges.

关 键 词：波束形成 阵列处理 相干信号 

分 类 号：TN957[电子电信—信号与信息处理]