基于FFT的仅相位加权阵列天线波束赋形优化方法  

Optimization Method of Phase Only Weighted Array Antenna Beam forming Based on FFT

作　　者：王辰 邱明华[2] 柏业超[3] 陈妍[4] WANG Chen;QIU Minghua;BAI Yechao;CHEN Yan(School of Computer and Software,Nanjing Vocational University ofIndustry Technology,Nanjing 210023,China;The 8th Research Institute of CSIC,Nanjing 211153,China;School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China;Institute of Public Security,Jiangsu Academy of Safety Science and Technology,Nanjing 241002,China)

机构地区：[1]南京工业职业技术大学计算机与软件学院,江苏南京210023 [2]中国船舶重工集团公司第八研究院,江苏南京211153 [3]南京大学电子科学与工程学院,江苏南京210023 [4]江苏省安全生产科学研究院公共安全研究所,江苏南京241002

出　　处：《现代信息科技》2021年第14期46-48,共3页Modern Information Technology

基　　金：国家自然科学基金(62071220,51808266)。

摘　　要：为了解决仅相位加权的天线波束赋形问题,文章提出一种基于快速傅立叶变换的方向图综合算法。在仅相位加权的约束条件下,应用一维傅立叶逆变换获得方向图并与期望方向图进行对比,将方向图进行调整后再使用快速傅立叶变换获得阵元对应的幅相激励,并对阵元中的幅度激励进行约束。结果显示,该相位加权的工作形式,可有效降低系统中馈电网络的复杂度。In order to solve the problem of antenna beam forming with only phase weighting,a pattern synthesis algorithm based on fast Fourier transform is proposed in this paper.Under the constraint of only phase weighting,the pattern is obtained by one-dimensional inverse Fourier transform and compared with the expected pattern.After adjusting the pattern,the amplitude and phase excitation corresponding to the array element is obtained by fast Fourier transform,and the amplitude excitation in the array element is constrained.The results show that the phase weighted working form can effectively reduce the complexity of the feed network in the system.

关 键 词：仅相位加权 可重构天线 波束赋形 快速傅立叶变换 

分 类 号：TN820[电子电信—信息与通信工程]