基于气体吸收光谱的新型激光测距技术仿真研究

A Novel Laser Ranging Technology Based on Gas Absorption Spectroscopy and Its Simulation Results

提出了一种基于气体吸收光谱的新型激光测距技术,将携带气体吸收光谱信息的参考光信号和测量光信号混频,利用傅里叶变换提取光程差,从而得出距离信息。根据推导的测距原理设计了基于激光甲烷遥测仪的测距系统,通过Matlab软件对测距过程进行了仿真分析。仿真结果验证了新型气体激光测距技术的可行性,为开发激光气体雷达指出了有意义的探索方向。

A new laser ranging technology based on gas absorption spectroscopy is proposed.The frequencies of reference optical signals and measurement optical signals carrying gas absorption spectroscopy information are mixedand Fourier transform is used to extract optical path differenceso as to obtain the distance information.According to the deduced ranging principlesa ranging system based on laser methane remote sensor is designedand its ranging process is simulated and analyzed by Matlab software.The simulation results have verified the feasibility of the gas laser ranging technologywhich supplies a promising direction for developing gas laser radar.