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临近空间风场的探测,在大气动力学研究和提高数值天气预报的准确性,以及航空航天保障等方面具有重要意义。研制基于瑞利散射双边缘技术的60 km多普勒激光雷达用于临近空间大气风场的测量。激光雷达主要分为垂直指向测量系统和两台斜指向测量系统。工作波长355 nm,探测距离15~60 km。为验证系统的可靠性和积累风场观测数据,于2014年下半年进行了外场实验,并与当地的探空气球数据进行对比,结果显示60 km瑞利多普勒激光雷达风场测量数据与探孔气球数据具有良好的一致性。
Proximity of the space wind field is of great significance in the study of atmospheric dynamics and the improvement of the accuracy of numerical weather forecasting, as well as aerospace security. A 60 km Doppler lidar based on Rayleigh scattering dual-edge technique was developed for the measurement of the wind field near the space. Lidar is mainly divided into vertical pointing measurement system and two oblique pointing measurement system. Working wavelength 355 nm, detection range of 15 ~ 60 km. In order to verify the reliability of the system and accumulate wind field observations, an outfield experiment was conducted in the second half of 2014 and compared with the local sounding balloon data. The results show that the 60 km Rayleigh Doppler lidar wind field data Hole balloon data has good consistency.