基于JADE-斜投影的鲁棒波束形成算法  

Robust beamforming algorithm based on JADE-oblique projection

作　　者：程永杰 李纯 刘帅[1] 金铭[1] CHENG Yongjie;LI Chun;LIU Shuai;JIN Ming(School of Information Science and Engineering,Harbin Institute of Technology(Weihai),Weihai 264209,China)

机构地区：[1]哈尔滨工业大学(威海)信息科学与工程学院,山东威海264209

出　　处：《系统工程与电子技术》2024年第2期401-406,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(62071144)资助课题。

摘　　要：针对矩阵重构类波束形成算法对阵列幅相误差敏感的问题,提出一种基于盲源信号分离和斜投影的矩阵重构鲁棒波束形成算法。首先,依靠盲源分离技术得到接收信号和混合矩阵,结合期望信号先验信息完成混合矩阵中信号导向矢量的搜索。然后,利用盲源分离得到的信号协方差矩阵完成阵列幅相误差估计。最后,基于幅相误差校准的混合矩阵和斜投影思想,构建各干扰的斜投影算子,将接收数据分别向干扰斜投影空间进行投影,得到对应的干扰信号,完成干扰噪声协方差矩阵重构。仿真结果表明,所提方法对阵列幅相误差具有较好的鲁棒性,验证了算法的有效性。A robust beamforming algorithm based on blind source signal separation and oblique projection matrix reconstruction is proposed to solve matrix reconstruction beamforming algorithms’sensibility to array amplitude-phase errors.Firstly,this method is based on blind source separation technique to obtain received signal and mixing matrix,combining with the prior information of interest signal to complete its signal steering vector search.Then,using the signal covariance matrix obtained from blind source separation to estimate array amplitude-phase errors.Finally,based on the mixed matrix and oblique projection idea of amplitude-phase error calibration,the proposed algorithm constructs oblique projection operators for each interference,with the projection of the received data into the interference oblique projection space,which obtains the corresponding interference signal and complete the reconstruction of the interference noise covariance matrix.The simulation results show that the proposed method has good robustness to the array amplitude-phase errors,which verifies the effectiveness of the proposed algorithm.

关 键 词：鲁棒波束形成 矩阵重构 幅相误差 盲源信号分离 斜投影 

分 类 号：TN911.7[电子电信—通信与信息系统]