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激光散射回波微多普勒效应物理仿真方法研究
杜渐1,2 ,张兴1 ,赵宏鸣1 ,高阳1 ,曹强2 ,张新兰3
(1. 北京仿真中心航天系统仿真重点实验室,北京 100854;
2. 武汉大学工业科学研究院,武汉 430072;
3. 95983 部队,兰州 732750)
摘要:为实现对激光探测回波微多普勒效应的物理仿真,建立了单点运动的微多普勒效
应的数 学 模 型。 提 出 了 基 于 可 控 振 动 器 和 基 于 声 光 调 制 器 ( AOM, acousto - optical
modulator) 的两种激光散射回波微多普勒效应物理仿真方法,并分别搭建了原理实验系
统。 实验结果表明两种方法可以实现对激光回波频率的调制,基于可控振动方案仿真方
案优点在于模拟结果更接近实际情况,但频率调制范围较小,而基于声光调制的方案频
率调制范围大,但是多个运动叠加较为困难。
关键词:微多普勒效应;声光调制器;物理仿真;目标识别
中图分类号:TN249 文献标识码:A 文章编号:1004-731X (2019) 08-0000-08
DOI 10.16182 / j.issn1004731x.joss.19-0391
Research on Physical Simulation Method of Micro-
Doppler Effect of Laser Scattering Echo
Du Jian1,2 ,Zhang Xing1 , Zhao Hongming1 ,Gao Yang1 ,Cao Qiang2 ,Zhang Xinlan3
(1. Technology on Special System Simulation Laboratory, Beijing Simulation
Center Science, Beijing 100854, China;
2. The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China;
3. PLA Troop 95983, Lanzhou 732750, China)
Abstract:In order to realize the physical simulation of the micro - Doppler effect of laser detection
echo, a mathematical model of micro - Doppler effect for single - point motion is established. Two
physics simulation methods for laser scattering echo micro-Doppler effect based on controllable vibrator
and acousto-optical modulator are proposed, and two experiment systems are set up. The experimental
results show that the two methods can achieve the modulation of laser wave echo. The advantage of the
simulation scheme based on controllable vibration is that the simulation results are closer to the actual
situation, but the frequency modulation range is smaller, while the scheme based on acousto-optical
modulation has a large frequency modulation range, but it is difficult to overlap multiple motions.
Key words: micro-Doppler effect; acousto-optical modulator; physical simulation methods; target
recognition
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