基于几乎差集的多输入多输出雷达阵列稀疏优化方法  

Optimization method of thinning MIMO radar arrays based on almost difference sets

作　　者：董健[1] 刘芳[1] 蒋艺[1] 施荣华[1] 

机构地区：[1]中南大学信息科学与工程学院,长沙410083

出　　处：《电波科学学报》2015年第5期870-877,共8页Chinese Journal of Radio Science

基　　金：国家自然科学基金(61201086);教育部博士学科点专项科研基金(20110162120044);湖南省科技计划项目(2014GK3022)

摘　　要：针对基于循环差集(Cyclic Difference Sets,CDS)的多输入多输出(Multiple-input Multiple-output,MIMO)雷达阵列稀疏方法由于现有CDS构造条件苛刻、集合数量有限而造成阵列配置数量较少的不足,提出了基于几乎差集(Almost Difference Sets,ADS)的MIMO雷达阵列稀疏优化方法.该方法可解析地确定发射、接收阵元位置,并先验预估虚拟阵列的方向图旁瓣上界.基于ADS的MIMO阵列在旁瓣性能上与基于CDS的阵列相近且优于随机阵列;ADS具有构造简单、阵列配置丰富的优势,有利于该方法的工程应用.仿真验证了所提方法的有效性.An optimization method of thinning multiple-input multiple-output（MIMO）radar arrays based on almost difference sets（ADS）is presented to avoid the shortage in quantity of cyclic difference sets（CDS）-based array configurations caused by the strict construction conditions of CDS.This method can analytically determine the element locations of transmitting and receiving arrays,and a priori estimate the upper bound of virtual array pattern sidelobes.Considering the advantages of better sidelobe performances with respect to random arrays and richer configuration choices with respect to CDS-based MIMO arrays,the proposed method is of common use in antenna engineering.Extensive simulations are performed to verify the effectiveness of the proposed method.

关 键 词：多输入多输出雷达 循环差集 几乎差集 峰值旁瓣电平 

分 类 号：TN957[电子电信—信号与信息处理]