Micro-Doppler modeling and simulation research of several typical micro motion forms

摘要

A Micro-Doppler mathematical model of the point target and radar is established in the four kinds of micro motion forms: vibration, rotation, tumbling and cone. A new method of detecting Micro-Doppler features is introduced: double pulse laser coherent detection, combining algorithm principle and mathematical model, the echo signals of four kinds of micro motion targets are simulated separately to obtain the Micro-Doppler time frequency spectrum of the target, during simulation, input parameters of each target are changed to analyze its influence on Micro-Doppler frequency. Then by comparing the difference of time frequency spectrum of different targets, the Micro-Doppler features are studied, which are important references to distinguish the different micro motion forms. This research project provides some references for the micro motion target detection, feature extraction and target identification.