目标组成部件的机械振动或旋转(微运动动力学)会在目标的雷达回波上产生频率调制,人们将由振动或旋转产生 的调制称为微多普勒现象。微多普勒特征可以被认为是运动物体的独特现象,能够提供用于目标分类识别的附加信息。 文中关注高速目标的微多普勒特征提取,讨论了高速带来的距离走动补偿、平动多普勒位移校正、雷达信号条件和微多普 勒特征提取方法,仿真了一种高速目标微多普勒分析方法,仿真结果验证了该方法的有效性。

Mechanical vibrations or rotations (micro-motion dynamics) of structures on a target may introduce frequency modulation on the radar return from the target's body. The modulation due to this vibration or rotation is referred to as the micro-Doppler phenomenon. Micro-Doppler features can be regarded as a unique signature of an object with movements and provide additional information for classification, recognition and identification of the object. In this paper, we concentrate on radar micro-Doppler feature extraction for high velocity targets. Compensation of range migration brought by high velocity, translation Doppler shift adjustment, radar signal requirement, and micro-Doppler feature extraction method are discussed. A kind of micro-Doppler analysis method for high velocity targets is simulated and the simulation results validate it.