基于模式转换自适应零点形成的研究  

Research of Adaptive Null Forming Based on Mode Space Transform

作　　者：杜晓玉[1] 金勇[1] 刘先省[1] 

机构地区：[1]河南大学基础实验教学中心,河南开封475001

出　　处：《现代雷达》2008年第4期78-81,共4页Modern Radar

基　　金：河南省自然科学基金(2006510001);河南大学校内基金(06YBZR033)

摘　　要：利用模式空间变换算法将均匀圆阵转换为均匀线阵,在虚拟线阵的阵列流形中,比较了Gram-Schmidt正交化算法、自适应旁瓣对消和SMI算法这三种算法形成的方向图。G-S正交化算法可以在干扰方向准确地形成零点,但是没有很深的零陷深度;SMI算法的计算量比较大,因此在零点方向上有稍微的误差,但经过旁瓣对消的虚拟线阵的方向图有很深的零点深度。仿真结果表明,经过旁瓣对消的方向图主瓣增益损失较少,副瓣高度降低,主瓣比副瓣高大约10 dB^12 dB。This paper changes uniform circular array to line array by mode space transformation algorithm.Then it compares the patterns which were formed by Gram-Schmidt orthogonal algorithm,Side-lobe cancellation algorithm and SMI algorithm.The pattern of G-S orthogonal algorithm can form null in the directions of clutters,but the depth of null is not enough;SMI algorithm has mass calculation and a little of error in the direction of disturbances;The uniform circular arrays pattern through side-lobe cancellation has ...

关 键 词：圆形阵列 Gram-Schmidt正交化算法 模式空间变换 虚拟线阵 自适应旁瓣对消 SMI算法 

分 类 号：TN911[电子电信—通信与信息系统]