多类型调频连续波激光雷达测距原理与仿真分析

摘要

依据调频连续波激光雷达测距原理,详细阐述了三种不同类型的调频连续波激光测距雷达的基本过程,并对其测距过程进行了推导;搭建了锯齿波、三角波和正弦波三种不同类型激光测距原理验证平台,设计了调制信号产生模块,拍频仿真模块,并测定拍频后的频率值;分析了三种类型调频连续波激光雷达的适用条件和范围,为后续系统设计和硬件选型提供了参考依据.%Three different types of laser radars are introduced based on the ranging principle of FMCW ( frequency modulated continuous wave) laser radar,and also the ranging procedure is deduced. The laser ranging simulation plat-form is set up for sawtooth,triangular and sine modulated wave. Based on this platform,the modules for signal genera-tion and beat signal simulation are designed and the frequency is measured from the beat signal. In the end,the appli-cation conditions for three different kinds of FMCM laser radars are analyzed,which provides the reference for the se-lection of system and hardware design.