基于子阵结构的相控阵MIMO雷达分辨能力分析  

Resolution Analysis of Phased-MIMO Radar Based on Subarray Configuration

作　　者：文小乔[1] 谭贤四[1] 吕伟[1] 王力宝[1] WEN Xiao-qiao;TAN Xian-si;Lv Wei;WANG Li-bao(Air Force Early Warning Academy,Wuhan 430019,China)

机构地区：[1]空军预警学院,武汉430019

出　　处：《火力与指挥控制》2016年第8期41-46,共6页Fire Control & Command Control

基　　金：国家自然科学基金资助项目(61201451)

摘　　要：在阵元总数一定的情况下,不同的子阵划分方式和布阵间距对不同子阵发射正交波形,子阵内发射相干波形的相控阵-MIMO雷达系统的分辨力的影响,首先通过相控阵-MIMO雷达的信号模型推导出其广义模糊函数,然后以此分析子阵结构对距离、多普勒、方位三维分辨力的影响。仿真结果表明,在阵元总数一定的情况下,子阵越多,系统距离分辨力越高,子阵越大,多普勒分辨力越高,子阵间距满足一定条件才能有较好的系统分辨力。这些结论对相控阵-MIMO雷达子阵结构设计具有指导意义。It is very important for phased-multiple input multiple output(MIMO)radar systems tomake sure how to partition the transmit array in order to satisfy the requirements of performance.Firstly,the generalized ambiguity function of the MIMO radar into Phased-MIMO radar is extended.Then,the influence of the subarray configuration on range,azimuth,and doppler resolutions areanalysed,If the sum of transmitter is assured,the simulation results indicate that the more subarraysare,the better range resolutions is,the bigger subarrays are,the better doppler resolutions is.Theseconclusion are crucially guiding for subarray configuration.

关 键 词：相控阵MIMO雷达 广义模糊函数 分辨力 正交频分信号 

分 类 号：TN957[电子电信—信号与信息处理]