摘要
为满足单脉冲雷达超低空、抗干扰能力使用需求,提出了一种和差波束同时低副瓣的设计方法,采用基于二级子阵的和差网络设计,综合圆形阵面、和波束Taylor加权以及差波束密度加权技术,实现和、方位差、俯仰差波束低副瓣,降低大型相控阵天线馈电网络的复杂性和硬件成本。采用该方法实现波束宽度2°×2°的大型相控阵天线设计,实测结果表明,接收和波束副瓣电平<-28.9 dB,方位差波束副瓣电平<-20.4 dB,俯仰差波束副瓣电平<-23 dB。
A design method with low sidelobe of sum-difference beam is proposed to meet the requirements of monopulse radar for ultra-low altitude and anti-jamming capability.The design of sum-difference network with two-stage subarray is used.The combination of circular array,sum beam Taylor weighting and difference beam density weighting is comprehensively adopted to realize the low sidelobe of sum,azimuth difference and elevation difference beam,which reduces the complexity and hardware cost of large phased array antenna feed network.This method is used to design a large phased array antenna with 2°×2°beam width.The measured results show that the receiving sum beam sidelobe level is<-28.9 dB,the azimuth difference beam sidelobe level is<-20.4 dB,and the elevation difference beam sidelobe level is<-23 dB.
作者
薛玲珑
徐钦
赵起超
张继浩
刘宇
XUE Linglong;XU Qin;ZHAO Qichao;ZHANG Jihao;LIU Yu(Shanghai Aerospace Electronics and Communication Equipment Research Institute,Shanghai 201109,China;The First Military Representative Office of the Air Force Equipment Department in Shanghai,Shanghai 201109,China;Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109,China)
出处
《无线电工程》
北大核心
2022年第6期1031-1036,共6页
Radio Engineering
基金
国家国防科技工业局资助项目。
关键词
单脉冲雷达
相控阵
低副瓣
和差波束
monopulse radar
phased array
low sidelobe
sum-difference beam
