中国激光, 2006, 33 (10): 1412, 网络出版: 2006-10-31
应用于测风激光雷达的多普勒校准仪
Design of Verifying Attachment for Calibration of Wind Lidar
摘要
中国科学院知识创新工程基金(Cx0201)和中国科学院计划基金(202032403130)资助项目。
Abstract
Using dual Fabry-Perot (F-P) interferometer as frequency discriminator, direct-detection Doppler lidar has been becoming a prominent and popular meteorological technique to measure atmospheric winds. To be a measurement tool, calibration of the system is a key procedure. A portable verifying attachment is designed for the convenient calibration of lidar systems mounted on mobile vehicles. The basic principle is to make a comparison between velocity measured by lidar system and the preset velocity of the revolving disk. The designed relative error of the verifying attachment is 1%, the dynamic range of velocity is greater than ±50 m/s, the maximum spectral broadening corresponds to the designed target has a width of 0.7 MHz, which is approximate to the aerosol circumstance. Lidar experimental results show that an accuracy of 0.6 m/s can be obtained for 2000 detected photons.
夏海云, 孙东松, 钟志庆, 王邦新, 董晶晶, 沈法华, 陈敏, 周小林. 应用于测风激光雷达的多普勒校准仪[J]. 中国激光, 2006, 33(10): 1412. 夏海云, 孙东松, 钟志庆, 王邦新, 董晶晶, 沈法华, 陈敏, 周小林. Design of Verifying Attachment for Calibration of Wind Lidar[J]. Chinese Journal of Lasers, 2006, 33(10): 1412.