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研制了基于双 F-P 标准具直接探测的地基测风激光雷达。简要回顾了双边缘直接探测技术,介绍了系统结构与控制。为验证系统测量结果的准确性,研制了多普勒校准仪。在±40 m/s 动态范围内的校准实验表明:当累计光子数达到2 000时,测风激光雷达系统对靶盘径向转速测量的标准误差为0.6 m/s。风场观测初步对比实验时,测风激光雷达的测量结果与风廓线测量结果一致。给出了24h 连续大气风场观测的结果:风场观测的垂直分辨率为21.2 m,每个径向观测的累积时间1 min,当激光雷达扫描视场内有云层时,测风激光雷达的探测高厦可达10 km。
A ground-based wind lidar based on double F-P etalon was developed. A brief review of the double edge detection technology, introduced the system structure and control. To verify the accuracy of the system measurements, Doppler calibrators were developed. The calibration experiment in the dynamic range of ± 40 m / s shows that the standard error of the radial wind speed measurement on the target disk is 0.6 m / s when the cumulative number of photons reaches 2 000. Wind field observations Preliminary comparative experiments, the wind laser lidar measurements and wind profile measurements consistent. The results of 24-hour observation of continuous atmospheric wind field are given. The vertical resolution of wind field observation is 21.2 m and the cumulative time of each radial observation is 1 min. When there is cloud in the field of laser radar scanning, the wind-lidar High buildings up to 10 km.