J4 ›› 2013, Vol. 30 ›› Issue (1): 98-102.

• 激光雷达专辑 • 上一篇    下一篇

基于Mach-Zehnder干涉仪条纹成像技术的多普勒测风激光雷达鉴频系统研究及仿真

汪丽,谭林秋,李仕春,狄慧鸽,王玉峰,华灯鑫   

  1. 西安理工大学机械与精密仪器工程学院,陕西 西安 710048
  • 出版日期:2013-01-28 发布日期:2013-01-11
  • 通讯作者: 汪 丽(1979-),女,河北保定人,博士,讲师,主要从事光学及大气风场探测等方面的研究。 E-mail:wlfuyun@xaut.edu.cn
  • 基金资助:

    国家自然科学基金(61205189,41027004) 、教育部高等学校博士学科点基金(20106118120009)、陕西省自然科学基础研究计划项目(2010JQ5004)和陕西省教育厅科学研究计划项目(2010JK754)资助课题

Study and simulation of frequency discriminator for Doppler wind lidar based on fringe imaging Mach-Zehnder

Wang Li, Tan Linqiu, Li Shichun, Di Huige, Wang Yufeng,Hua Dengxin   

  1. School of mechanical and precision instrument engineering of Xi’an University of Technology, Xi’an 710048, China
  • Published:2013-01-28 Online:2013-01-11

摘要:

多普勒激光雷达在大气风场探测中已经得到广泛应用。相比于Fabry-Perot(F-P)干涉仪、Fizeau干涉仪,Mach-Zehnder(M-Z)干涉仪作为鉴频器具有透过率高、探测谱的范围宽、能进行视场展宽而获得大光通量、所成直条纹可以与CCD匹配等优点,同时也可以实现大的风速探测范围,弥补现有直接探测多普勒测风激光雷达探测范围较小,探测灵敏度的非线性的问题。分析了基于M-Z干涉仪条纹成像技术的激光雷达大气风场探测原理,对干涉仪鉴频系统进行了参数优化设计及仿真分析,通过设定实验参数,获得仿真结果,进行数据反演,得到风速值与理论结果基本一致。

关键词: 激光雷达, 风场探测, Mach-Zehnder干涉仪, 条纹成像技术, 风速反演

Abstract:

Doppler lidar has been widely used for wind measurement. Compared with Fabry-Perot(F-P) interferometer and Fizeau interferometer, Mach-Zehnder(M-Z) interferometer have the advantages of high transmittance, wide spectral range ,wide field of view and producing linear fringe. It can realize wide wind range detection and make up smaller detection range and nolinear detection sensitivity of present technology. Wind measurement theory based on fringe imaging M-Z interferometer is analyzed. The parameters of interferometer system are optimized and then the system is designed by using a numerical simulation. The simulation results show that the wind velocity retrieved is agree with theoretical wind velocity.

Key words: lidar, wind measurement, Mach-Zehnder interferometer, fringe imaging, retrieve wind velocity