模拟稀布矩阵的相位加权低副瓣设计  

Low side⁃lobe design with phase weighting in simulated sparse arrays

作　　者：赵鹏[1] 王琰 刘成 ZHAO Peng;WANG Yan;LIU Cheng(The 13th Research Institute of CETC,Shijiazhuang 050000,China)

机构地区：[1]中国电子科技集团公司第十三研究所,河北石家庄050000

出　　处：《现代电子技术》2024年第7期95-99,共5页Modern Electronics Technique

摘　　要：低副瓣是相控阵雷达的重要指标,发射时受限于硬件条件,阵面无法进行幅度加权,对于收发通用的低副瓣设计,只能依靠稀布阵元或相位加权实现。针对上述问题,文中提出模拟稀布矩阵的相位加权低副瓣设计。首先,给出了相位加权的理论依据;之后分别给出基于遗传算法的唯相位加权和稀布矩阵的降副瓣效果;再设计一种相位加权模拟稀布阵元的理论公式和仿真结果,最终给出了稀布阵元和相位加权相结合的降副瓣结果,设备实测结果和仿真结果相近。Low side-lobe is an important index for phase array radar.Limited to hardware,antenna fails to do amplitude weighting while transmitting.To implement a universal low side-lobe method for both transmitting and receiving,sparse arrays or phase weighting is feasible.In view of the above,a low side-lobe design with phase weighting in simulated sparse arrays is proposed.The theoretical basis of phase weighting is given.The low side-lobe effects of phase-only weighting method and sparse arrays based on the genetic algorithm is given.And then,the theoretical formulas and simulation results of a phase weighting method for simulating sparse arrays are designed.Finally,an optimum low side-lobe result is obtained based on the combined method.The measured value by the instrument is similar to the simulation result.

关 键 词：相控阵 低副瓣 相位加权 稀疏布阵 阵元 增益 波束 赋形 

分 类 号：TN821.8-34[电子电信—信息与通信工程]