基于二次规划的线性天线阵列和方向图及差方向图综合算法  

Sum and difference pattern synthesis of linear antenna arrays based on quadratic programming

作　　者：王绪存[1,2] 周以国[1] 王岩飞[1] 

机构地区：[1]中国科学院电子学研究所,北京100190 [2]中国科学院大学,北京100039

出　　处：《北京交通大学学报》2015年第2期117-121,共5页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

摘　　要：天线阵列方向图综合在雷达系统中具有重要应用.提出了一种快速的基于二次规划的线性天线阵列和方向图及差方向图综合算法.考虑阵列激励的对称性,建立相应的凸二次规划问题,最大化阵列方向性系数.线性约束条件可以控制波束指向、副瓣电平和零陷产生等.这种算法具有全局最优解,仿真结果表明:该算法可以用于多种和、差方向图的综合问题.Antenna array pattern synthesis is very important in radar systems. A fast synthesis algo- rithm based on quadratic programming is proposed for sum and difference patterns of linear antenna ar- rays. Considering the symmetry of the array excitations, we are able to formulate a convex quadratic program to maximize the directivity of the antenna array. The linear constraints can control the beam direction, sidelobe levels, nulls, etc. The proposed algorithm guarantees a globally optimal solution. Simulation results demonstrate that the proposed algorithm can be applied to various synthesis of sum and difference patterns.

关 键 词：天线阵列 方向图综合 和方向图 差方向图 二次规划 方向性系数 

分 类 号：TN823[电子电信—信息与通信工程]