Modeling simulation and experiment of micro-Doppler signature of precession

摘要

Spatial precession is a special micro-motion of the spinning-directional target,and the micro-Doppler signature of the cone-shaped target with precession is studied.The micro-motion model of precession is built first,and then the micro-Doppler model is developed based on the proposed concept of micro-motion matrix,by which the theoretical formula of micro-Doppler signature of precession is derived.In order to further approach to the actual case,the occlusion effect is firstly considered in micro-Doppler,and the simulated result with occlusion effect is well in accordance with the measured result in microwave anechoic chamber,which suggests that the micro-motion model and micro-Doppler model of precession are both valid.