一种改进的基于LC-GSC的主瓣干扰抑制方法  

An Improved Mainlobe Interference Suppression Method Based on Generalized Sidelobe Canceller

作　　者：张静宇 王宇 楼大年 

机构地区：[1]空间电子信息技术研究院,西安710100

出　　处：《电讯技术》2014年第2期163-168,共6页Telecommunication Engineering

基　　金：国家高技术研究发展计划(863计划)项目(2012AA01A503)~~

摘　　要：针对线性约束广义旁瓣相消器(LC-GSC)存在主瓣干扰时天线自适应方向图会出现主瓣波束畸变及副瓣电平升高的问题,给出了一种通过阻塞矩阵对数据进行预处理的主瓣干扰抑制方法,对线性约束广义旁瓣相消器进行了改进,先利用阻塞矩阵预处理实现主瓣干扰抑制,再通过线性约束广义旁瓣相消器进行波束形成,有效地解决了波束主瓣变形及旁瓣电平升高的问题。仿真分析验证了改进方法的有效性。According to the linear constraints generalized sidelobe canceller （LC-GSC）, the adapted pattern suffers much distortion （distorted mainlobe and high sidelobes）, when there exists main lobe interference. An adaptive beam forming based on blocking matrix data-preprocessing is proposed, which is an improvement of linear constraints generalized sidelobe canceller. Firstly,a blocking matrix is constructed tocancel the mainlobe interference, then beamforming based on the linear constraints generalizes sidelobecanceller, which effectively solves the problem of beam deformation while suppressing the mainlobe interference. The method has been proven to be effective by the computer simulation.

关 键 词：自适应波束形成 线性约束广义旁瓣相消器 阻塞矩阵 主瓣干扰抑制 

分 类 号：TN911.7[电子电信—通信与信息系统]