摘要
设计一套测量大气风场的多普勒激光雷达系统,以种子注入的单频、高重频、脉冲紫外全固态激光器为发射光源,采用两种直接探测技术获取高低空大气风场。基于费索干涉仪(Fizeau)的条纹图像技术获取边界层和低对流层大气风场,基于双法布里珀罗干涉仪(DFP)的双边缘检测技术获取高对流层和低平流层风场。研制的单频全固态激光器输出100 Hz、30 mJ的单纵模脉冲激光,输出线宽达到傅里叶转换极限。报道了测量原理和数值模拟结果、实验样机和系统技术参数。系统将用于移动式高低空大气风场测量。
A Doppler lidar with an injection-seeding,single frequency,high repetition rate,pulsed ultraviolet laser and two direct-detection methods are proposed for wind measurement.Wind of low troposphere and boundary layer is obtained by fringe-image technique based on a Fizeau interferometer,and wind of higher troposphere and low stratosphere is achieved by double-edge technique based on double FP interferometers.Laser outputs 30 mJ at 100 Hz with a linewidth of Fourier-transfer-limitation.Principle and numerical simulation,prototype and parameters of system will be introduced.The system is applied to the wind measurement of high and low altitude.
出处
《红外与激光工程》
EI
CSCD
北大核心
2008年第1期57-60,共4页
Infrared and Laser Engineering
基金
国家863计划资助项目(2006AA12Z126)
