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中文摘要：
与传统单基雷达系统相比,多输入多输出（MIMO）雷达系统充分利用发射分集和接收分集的优势,能够在不同的视角接收目标回波信号,可以提取目标更精细的微多普勒特征,因而大大提高了雷达对目标的识别能力。基于MIMO雷达系统,详细分析推导了正交频分线性调频信号体制下目标部件振动的微多普勒效应,并采用时频分析工具对理论分析的结果进行了仿真验证。
英文摘要：
Compared to traditional monostatic radar system,MIMO（Multiple Input Multiple Output） radar system takes full advantage of both the transmitting diversity and receiving diversity,it can receive returned signals from targets in different aspects with respect to the transmitting/receiving radar pairs.So it can extract more subtle micro-Doppler characteristics about the target and highly improve the target recognition capability of radar.Based on the MIMO radar system with OFD-LFM（Orthogonal Frequency Division Linear Frequency Modulation） signals,the micro-Doppler effect induced by vibration parts of the target is deduced in detail and then simulation experiments are done with time-frequency analysis tools to validate the theoretic conclusions.
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