摘要
当干扰位置快变化时,自适应波束形成的权矢量的更新速率跟不上干扰位置的变化速率,从而导致抗干扰的效果变差甚至使算法失效。文中在锥台形阵列的基础上,建立干扰位置扰动服从两点分布的模型,从数学的角度推导出一种锥台形阵列的二维零陷展宽算法,该算法可以根据实际快速运动干扰的特性,建立相应算法所需的先验参数,将此参数应用于该零陷展宽算法,可以有效地抑制对应的快速运动干扰。计算机仿真证明了该算法的有效性。
When the interference’s position changes rapidly,the update rate of weight vector cannot cope with its change rate and could lead to a worse effect of anti-interference,even disable the algorithm.Based on truncated cone array,a binomial distribution model that disturbance of interference’s position follows is established,and a two-dimensional nulling broaden algorithm is mathematically derived.The fast-moving interferences can be restrained effectively by building necessary prior parameters according to its features.The effectiveness of the proposed algorithm is proved by computer simulations.
作者
王欢
姜洋
纪雨雪
李峰
WANG Huan;JIANG Yang;JI Yuxue;LI Feng(Institute of Information and Navigation,Air Force Engineering University,Xi'an 710051,China;Xi'an Electronic Engineering Research Institute,Xi'an 710100,China)
出处
《现代雷达》
CSCD
北大核心
2019年第11期73-76,共4页
Modern Radar
关键词
波束形成
锥台形阵列
两点分布
零陷展宽
beam forming
truncated cone array
binomial distribution
nulling broaden
