基于改进引力搜索算法的阵列天线波束赋形  

Beam Shaping for Antenna Array Based on Improved Gravitational Search Algorithm

作　　者：袁建涛[1] 周慧[1] 郭陈江[1] 丁君[1] 

机构地区：[1]西北工业大学电子信息学院,西安710129

出　　处：《微波学报》2014年第3期50-53,58,共5页Journal of Microwaves

基　　金：国防预研基金(9140A01010412HK03004)

摘　　要：提出了一种改进引力搜索算法,通过引入遗传算法的变异算子,提高了引力搜索算法的局部搜索能力,解决了引力搜索算法在阵列天线赋形波束应用时的实现方法和早熟收敛问题。在阵元个数及阵元间距一定的情况下,对阵元激励的幅值和相位进行优化,使赋形波束达到设计要求。实验结果证明了该改进方法的可行性和有效性。An improved gravitational search algorithm （IGSA） is proposed in the paper. By introducing the mutation operator of genetic algorithm, the local search capability of GSA is improved. Also the way to apply improved gravitational search algorithm to beam shaping for antenna array and premature convergence problem are well solved. Given the determi- nate number and space between the antenna array elements, the amplitude and phase of excitations are optimized and by this method to make the shaped-beam patterns meet the designing request. Simulation results prove the feasibility and efficiency of the proposed method.

关 键 词：波束赋形 引力搜索算法 方向图综合 天线阵 

分 类 号：TN820[电子电信—信息与通信工程]