基于Givens变换的广义旁瓣相消器的设计  

Design of Generalized Sidelobe Canceller Based on Givens Transform

作　　者：冀文辉 原浩娟 秦琨 徐恒 朱保安 JI Wenhui;YUAN Haojuan;QIN Kun;XU Heng;ZHU Baoan(Shanghai Aerospace Electronic Technology Institute,Shanghai 201109,China)

机构地区：[1]上海航天电子技术研究所,上海201109

出　　处：《无线电工程》2021年第8期816-822,共7页Radio Engineering

基　　金：上海市青年科技英才扬帆计划(21YF1417400)。

摘　　要：对于传统的基于广义旁瓣相消器(Generalized Sidelobe Canceller,GSC)的降秩自适应波束形成算法,阻塞矩阵大多数需要通过特征值分解获得,而特征值分解会带来新的大运算量,大大限制了算法的工程实现。提出一种基于Givens变换的快速自适应干扰抑制方法,利用Givens变换构建的广义旁瓣相消器下支路阻塞矩阵,可将期望信号完全阻塞,获得较高的输出信噪比。理论分析和性能仿真验证了该方法的优越性。For most traditional reduced-rank adaptive beamforming algorithm based on Generalized Sidelobe Canceller(GSC),the blocking matrix is achieved by eigendecomposition which brings the computational burden.To reduce the computational burden and achieve real-time processing,a novel Givens-based fast adaptive interference suppression approach is proposed.Givens transformation can be employed for the design of the blocking matrix of the GSC,which will block the desired signal.Therefore,it can maximize the output SINR.Theoretical analysis and simulation results demonstrate the superiority of the proposed approach.

关 键 词：Givens变换 自适应波束形成 阵列信号处理 广义旁瓣相消器 

分 类 号：TN828[电子电信—信息与通信工程]