SIAR体制下单基地MIMO雷达距离高分辨研究  

Study of high-resolution range profile for monostatic MIMO radar based on SIAR

作　　者：赵光辉[1,2] 陈伯孝[2] 高昭昭[3] 

机构地区：[1]西安电子科技大学智能感知与图像理解教育部重点实验室,陕西西安710071 [2]西安电子科技大学雷达信号处理重点实验室,陕西西安710071 [3]信息综合控制国家重点实验室,四川成都610036

出　　处：《系统工程与电子技术》2010年第4期734-739,763,共7页Systems Engineering and Electronics

基　　金：国家自然科学基金(60772068);国家预研项目(51307050201);教育部新世纪优秀人才支持计划(NECT-06-0856)资助课题

摘　　要：常规脉冲压缩处理只针对单根天线单一载频单次回波,对于MIMO雷达,由于发射采用多载频信号,回波信号通道分离后若能进行带宽合成,则相应距离分辨率会比单根天线提高数倍,有利于后续检测与跟踪。针对MIMO雷达设计中调频带宽和载频差的不同选取,分别采用时频域频谱拼接及频谱外推与Root-MUSIC算法相结合的方法,得到目标高分辨距离像。仿真结果验证了该方法的正确性。Conventional pulse compression use a periodical echo of single receive antenna,which is modulated by a certain carrier-frequency,in other words,single spectrum is exploited.But for MIMO radar,as the multi-carrier-frequency signals are transmitted simultaneously,if the spectrum of the target echo after channel separation can be combined to form the whole band spectrum echo,the corresponding range resolution can improve several times as compared with the conventional method,and it will be more convenient for follow-up detection and tracking.Considering the difference between the frequency modulation band and the interval between the adjacent frequencies,the spectrum joint after channel separation will be overlapped or spaced.The methods of spectrum moving of each echo and the spectrum extrapolation with Root-MUSIC algorithm are proposed,by which high-resolution range profile of the target is obtained.Simulation results verify the validity of these methods.

关 键 词：综合脉冲孔径雷达 单基地MIMO雷达 频谱外推 高分辨距离像 

分 类 号：TN957.51[电子电信—信号与信息处理]