基于Fabry-Perot标准具分子测风激光雷达接收机的研制

Development of molecule wind lidar receiver based on Fabry-Perot etalon

为了研究平流层大气风场,介绍了分子散射多普勒测风激光雷达的基本原理。基于测量误差最小和消除气溶胶的影响设计了标准具的参量。设计了分子测风激光雷达接收机,该接收机结构紧凑,可以灵活便捷地放置在机架上。并将本接收机用于分子测风激光雷达系统中进行了标准具透过率的测量和风廓线的初步测量。结果表明,标准具透过率曲线测量的结果和设计的大体一致,速率灵敏度较设计的略微下降,风廓线趋势和美国Goddard系统所测量的大体一致,这说明本系统光学接收机能够完成分子的多普勒风速测量。

For the wind measurement of the stratosphere, the principle of molecular Doppler wind lidar was introduced. The parameters of Fabry-Perot were designed in order that the measure error was least and the effect of the aerosol was eliminated. The structure of the molecular Doppler wind lidar receiver was designed, which could be placed on the mechanical etagere. The transmittance of the etalon and the wind profile were measured with this receiver used in the molecule wind lidar system, The results show that the measured transmittance of etalon agrees with the designed one approximately. The velocity sensitivity is lower than the designed one. The wind profile form is approximately in agreement with the American Goddard system. These indicate the receiver can be used for the wind measurement.