基于遗传算法的网格化球顶相控阵波束综合  

Radiation Pattern Synthesis for Geodesic Dome Phased Array Antenna Based on Genetic Algorithm

作　　者：杨正龙[1] 张锐[1] 杨文军[1] 黎海林[2] 

机构地区：[1]南京电子技术研究所,南京210039 [2]北京跟踪与通信技术研究所,北京100094

出　　处：《现代雷达》2016年第3期70-74,共5页Modern Radar

摘　　要：与传统平面相控阵波束综合方式不同,共形相控阵天线单元指向不一,阵列方向图难以表达成阵因子和单元因子的乘积形式。针对二维共形相控阵列波束综合问题,建立了一种网格化球顶相控阵列几何描述模型,推导了包含单元方向图的波束形成与计算公式。基于遗传算法,采用幅度加权方式,以阵列波束副瓣电平、指定方向陷零等指标作为代价函数,对阵列方向图进行了优化,优化后的最大副瓣电平达-23dB,指定方向陷零可达-75dB。仿真实验验证了波束形成及优化算法的正确性,相关算法技术可推广应用于不同形式的共形阵列波束综合。Due to the different point directions of each radiation elements, the radiation pattern synthesis for conformal phased array is much different from the traditional plane phased array, and the array radiation pattern is not expressed as an analysis formula. This paper is focused on radiation pattern synthesis for 2 dimensional conformal array. Firstly, a mathematical model is established for geodesic dome phased array antenna and the expression of array radiation pattern is deduced accounting the element radiation pattern. Secondly, array pattern is optimized by using genetic algorithm, choosing the side lobe and depth of the notch as the price function, the maximal side lobe is below -23 dB and the notch of the designed direction is about -75 dB. Finally the simulation experiments prove the proposed algorithms

关 键 词：共形阵 网格化球顶相控阵 遗传算法 

分 类 号：TN821.8[电子电信—信息与通信工程] TP18[自动化与计算机技术—控制理论与控制工程]