CAJ | 학술논문

为了精确观测平流层风场，采用F-P标准具作为瑞利散射测风激光雷达多普勒频率检测的核心器件，对F-P标准具多普勒频率检测原理进行了理论分析，从分析最大设计高度时的测量误差着手，优化选取标准具透过率曲线参量；介绍了透过率曲线参量的校准过程和校准方法，分析了导致透过率曲线的半峰全宽增大的原因、透过率曲线校准精度对速度灵敏度及系统探测误差的影响；并通过实验对设计和校准结果进行了验证。结果表明，由于透过率曲线的半峰全宽增大，导致速度灵敏度下降了0．118％/（ m· s-1）；40km高度处，在测量信噪比大于10的条件下，径向速度测量精度增大2m/s。
위료정학관측평류층풍장，채용F-P표준구작위서리산사측풍격광뢰체다보륵빈솔검측적핵심기건，대F-P표준구다보륵빈솔검측원리진행료이론분석，종분석최대설계고도시적측량오차착수，우화선취표준구투과솔곡선삼량；개소료투과솔곡선삼량적교준과정화교준방법，분석료도치투과솔곡선적반봉전관증대적원인、투과솔곡선교준정도대속도령민도급계통탐측오차적영향；병통과실험대설계화교준결과진행료험증。결과표명，유우투과솔곡선적반봉전관증대，도치속도령민도하강료0．118％/（ m· s-1）；40km고도처，재측량신조비대우10적조건하，경향속도측량정도증대2m/s。
The Fabry-Perot etalon was the key component of a Rayleigh Doppler wind lidar .In order to accurately determine the Doppler shift proportional to the wind velocity , the principle of Rayleigh Doppler frequency measurement was deeply analyzed , and the optimum parameters of the etalon were determined after analyzing the detection error at the maximum height designed .The calibration method and idea were introduced in detail .The factors making the full width at half maximum(FWHM) of the transmission curves broadened were analyzed , the calibration accuracy of the transmission curve affecting the velocity sensitivity and the system measuring error was also analyzed in detail .The design and calibration were verified in experiments .The result indicated that the velocity sensitivity of etalon decreased 0.118%/( m· s-1 ) due to the broadened FWHM of transmission curves and with the signal-to-noise ratio no less than 10, the accuracy of the line-of-sight velocity increased 2m/s at 40km altitude height.