激光测速雷达下振动目标运动状态分析与仿真

激光雷达微多普勒效应在对目标探测、识别中测量精度高、抗干扰能力强,比传统微波雷达拥有更高的空间分辨率和灵敏度。本文基于激光探测,从理论上分析了振动物体在行进过程中产生的多普勒和微多普勒效应。建立典型运动模型,通过目标信号的频移图和频谱图可以很好地观测物体运动状态、分析振动特性。最后,在simulink下进行过程仿真并验证其有效性,对目标的识别和运动特性提取起到积极的作用。

Study and simulation of vibrating target′s motion states based on Doppler lidar

Compared with the conventional microwave radar,lidar micro-Doppler effect has a higher spatial resolution and sensitivity,it has high measurement precision and strong anti-interference ability in target detection and identification.This article analyzes micro-Doppler and Doppler effect generated by motion of the vibrating object.Typical target motion model is established.Through the spectrum and frequency shift,we can have a good observation about object motion state and vibration characteristics of the object.Finally,simulation proves that the theory is helpful in target recognition and movement characteristics analysis.