OFDM-MIMO雷达运动目标回波相参积累方法  

Conherent Integral Mehod of the Movement-target Echoes of OFDM-MIMO Radar

作　　者：刘京然[1] 王星[1] 王党卫[2] 

机构地区：[1]空军工程大学工程学院,西安710038 [2]空军雷达学院空天基预警监视装备系,武汉430019

出　　处：《现代雷达》2014年第12期43-47,53,共6页Modern Radar

基　　金：国家自然科学基金(No.61179015);863计划课题(ss2013AA120902)

摘　　要：针对传统相控阵雷达长时间回波积累存在的距离走动难题,提出了一种基于正交频分调制(OFDM)波形多输入多输出(MIMO)相控阵雷达的回波相参方法,通过对OFDM-MIMO雷达多个相位中心短时间接收回波的移频、脉压和相参积累,避免了传统相控阵雷达回波长时间相参积累难题。仿真结果证实了所提方法的有效性。Aiming to range-envelope walking problem during the long-time eonherent integral of the tranditional phased-radar, the conherent integral method of the echos of OFDM-MIMO radar is proposed in this paper. The proposed method can avoid the diffi- culties in the long-time conherent integral of the tranditional phased-radar, via frequency-shfit, pulse-compression and conherent intergraltion steps of the short-time ehcoes from the mutiple phase-centers of OFDM-MIMO radar. Simulation results validate the proposed system and methods.

关 键 词：多输入多输出雷达 相控阵雷达 相干处理 

分 类 号：TN957.51[电子电信—信号与信息处理]