北斗导航接收机旁瓣对消技术研究  

Research on adaptive sidelobe cancellation technology in Beidou navigation receiver

作　　者：赵书苏 何明亮[2] 姚建国[3] Zhao Shusu He Mingliang Yao Jianguo(College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China Alcatel-Lucent Shanghai Bell Co. ,Ltd. ,Nanjing 210003 ,China Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, China)

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003 [2]上海贝尔股份有限公司,江苏南京210003 [3]南京邮电大学江苏省无线通信重点实验室,江苏南京210003

出　　处：《微型机与应用》2016年第20期58-60,共3页Microcomputer & Its Applications

摘　　要：北斗导航信号数字化处理技术的研究和发展越来越受到人们的关注,自适应天线旁瓣对消技术在北斗导航接收机中得到了广泛应用。分析了自适应天线旁瓣对消的基本原理,给出了在相对带宽较宽的干扰下按照最小均方(LMS)准则求解最优权值的计算过程以及基于Cholesky分解求取干扰信号自相关矩阵逆阵的方法。最后通过MATLAB对所设计的自适应天线旁瓣对消系统进行仿真分析,其结果表明自适应旁瓣对消技术可有效对抗宽带干扰。The research and development of digital processing technology about Beidou navigation signal is concerned by more and more people,and adaptive antenna sidelobe cancellation technology has been widely applied in the Beidou navigation receiver. This paper analyzes the basic principle of adaptive antenna sidelobe cancellation,and gives the process in term of least mean square（ LMS） rule to calculate the optimal weights under the interference of relatively wide bandwidth and the method to calculate inverse matrix of interfering signal autocorrelation matrix based on Cholesky decomposition. At last,the paper simulates the designed adaptive antenna sidelobe cancellation system through MATLAB to analyze the performance,and the results show that the adaptive sidelobe cancellation system performs well in suppress broadband interference.

关 键 词：自适应旁瓣对消 最小均方算法 矩阵求逆 仿真与分析 

分 类 号：TN973.3[电子电信—信号与信息处理]