CAJ | 학술논문

MIMO雷达即多输入多输出雷达，发射时分为多个子阵，每个子阵发射的信号载频相差固定频率并满足正交关系，其信号模型及处理方法类似于步进频率雷达。由于信号之间的正交性，利用匹配滤波提取出不同频率的发射信号分量，然后相参合成实现距离维高分辨，同时还可以完成测速、测距和相参积累等功能。首先给出了 MIMO 雷达的信号模型，然后分析了正交频分线性调频信号的互相关特性，推导出了距离维高分辨合成处理的数学模型，分析了速度对合成效果的影响及解决方法，最后通过仿真实验证明了理论分析的正确性。
MIMO뢰체즉다수입다수출뢰체，발사시분위다개자진，매개자진발사적신호재빈상차고정빈솔병만족정교관계，기신호모형급처리방법유사우보진빈솔뢰체。유우신호지간적정교성，이용필배려파제취출불동빈솔적발사신호분량，연후상삼합성실현거리유고분변，동시환가이완성측속、측거화상삼적루등공능。수선급출료 MIMO 뢰체적신호모형，연후분석료정교빈분선성조빈신호적호상관특성，추도출료거리유고분변합성처리적수학모형，분석료속도대합성효과적영향급해결방법，최후통과방진실험증명료이론분석적정학성。
MIMO radar has multiple antennas on transmit.Each antenna emits orthogonal signal and frequency difference between signals is fixed.The signal model and signal processing of MIMO radar are sim-ilar to stepped-frequency radar.On receive,due to the orthogonal character,a bank of matched filters is used to separate and extract each transmit signal of different frequencies.Then high range resolution is implemen-ted by coherent combination.The velocity and distance detection and the coherent integration can be also achieved.Firstly,signal model of MIMO radar is proposed,and then the cross-correlation of OFD-LFM sig-nal is analyzed.The mathematic model of high resolution range combination method is deduced.The influ-ence of velocity on the combination effect is analyzed and the resolving method is derived.The simulation val-idates the correctness of the proposed theoretical analysis.