面阵FDS-MIMO雷达回波模型及方向图特性分析  

Analysis on echo model and pattern characteristics of planar array FDS-MIMO radar

作　　者：李星辉 王党卫[1] 熊智敏[1] 马晓岩[1] LI Xinghui;WANG Dangwei;XIONG Zhimin;MA Xiaoyan(Early Wamning Academy,Wuhan 430019,China)

机构地区：[1]空军预警学院,武汉430019

出　　处：《空军预警学院学报》2021年第5期328-331,336,共5页Journal of Air Force Early Warning Academy

摘　　要：为提升平面阵模型下频率分集子孔径MIMO雷达的探测性能,对其回波模型以及方向图性能进行了理论研究.首先分析了FDS-MIMO雷达系统的几何模型、回波模型;然后重点分析了面阵FDS-MIMO雷达发射-接收双程方向图栅瓣、周期性以及波束宽度等特性;最后通过仿真验证了以上理论分析的正确性.理论分析与仿真结果表明,与MIMO相控阵雷达相比,平面阵FDS-MIMO雷达具有方向图存在距离-俯仰角耦合、方位角度上无耦合的特点,其工作方式更为灵活.:In order to improve the detection performance of frequency diversity subaperturing MIMO(FDS-MIMO)radar under planar array model,this paper makes theoretical studies on its echo model and pattern performance.Firstly,the paper analyzes the geometric model and echo model of FDS-MIMO radar system,and then emphatically analyzes the characteristics such as grating lobe,periodicity,beam width,etc.of transmitting-receiving two-way pattern of planar array FDS-MIMO radar.Finally,the correctness of the above theoretical analysis is verified by simulation.Theoretical analysis and simulation results show that compared with MIMO phased array radar,planar array FDS-MIMO radar has the characteristics of range-pitch angle coupling in pattern and no coupling in azimuth angle,with more flexible working mode.

关 键 词：FDS-MIMO雷达 频率分集 子孔径 回波模型 方向图 波束特性 

分 类 号：TN958[电子电信—信号与信息处理]