两种GPS天线阵列抗干扰算法研究及仿真  

Study and Simulation on Adaptive LMS、DBF Algorithm For GPS Anti-jamming

作　　者：尹勇[1] 王辉[1] 靳鹏飞[1] 

机构地区：[1]中国空空导弹研究院,河南洛阳471009

出　　处：《全球定位系统》2011年第5期37-40,共4页Gnss World of China

摘　　要：介绍了自适应天线阵列信号响应的数学描述,论述了在GPS抗干扰应用中广泛采用的基于最小均平方(LMS)的自适应算法的原理和实现过程,并对算法进行了仿真。提出了一种优于LMS算法的自适应数字波束形成(DBF)技术,推导出了其最优权系数矢量的计算方法,并对该算法进行了仿真。仿真结果表明:4阵元LMS的自适应调零算法对于单干扰的抑制和双干扰的抑制都达到了较好的效果,同时也体现了该算法零陷的优点。This paper presents the mathematics description of the adaptive antenna array and the basic principle of GPS anti-jamming based on LMS algorithm.The algorithm is simulated by Matlab.A Digital Beam Forming（DBF） technique which is better than LMS is introduced as well.Both its optimal weight vector is deduced.This algorithm has better effect for interfering suppression,and shows its advantage null.

关 键 词：自适应天线阵列 LMS算法 波束形成 GPS抗干扰 

分 类 号：TN911[电子电信—通信与信息系统]