一种水平探测荧光激光雷达系统常数标定方法  

Calibration Method for System Constants of Horizontal Detection Fluorescence Lidar

作　　者：张寅超[1] 马扬程 陈思颖[1] 陈和[1] 郭磐[1] 檀望舒 李道明 杨显 Zhang Yinchao;Ma Yangcheng;Chen Siying;Chen He;Guo Pan;Tan Wangshu;Li Daoming;Yang Xian(School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学光电学院,北京100081

出　　处：《光学学报》2022年第18期166-174,共9页Acta Optica Sinica

基　　金：国家自然科学基金(42005137)。

摘　　要：水平探测荧光激光雷达是观测大气有机气溶胶的有效工具,系统常数的标定是利用荧光回波信号反演有机气溶胶浓度的关键。提出了一种基于荧光-米回波信号强度比的水平探测荧光激光雷达系统常数标定方法。该方法利用水平探测的荧光-米回波强度比和粒子计数器定点测量的气溶胶浓度数据来获得激光雷达的系统常数,进而减小系统几何因子的影响。在仿真计算中,将所提方法与传统标定方法进行对比,验证了所提方法的精度与稳定性。最后,利用一台水平近场探测的荧光-米散射双通道激光雷达进行实际标定实验,验证了所提方法的可行性和有效性。结果表明,所提方法可以较好地减小几何因子对标定精度的影响,并具有更好的稳定性。Horizontal detection fluorescence lidar is an effective tool to observe atmospheric organic aerosols,and the calibration of its system constants is the key to obtaining the concentration of organic aerosols with fluorescence echo signals by inversion.A calibration method for the system constants of horizontal detection fluorescence lidar based on the fluorescence-Mie scattering echo signal intensity ratio is proposed.The proposed method uses the fluorescence-Mie scattering echo signal intensity ratio attained by horizontal detection and the aerosol concentration data measured by the particle counter at fixed points to obtain the system constants of the lidar,and thereby reduce the influence of the system geometry factor.The accuracy and stability of the proposed method are verified by a comparison with the traditional calibration method in the numerical calculation.Its feasibility and effectiveness are proved by a practical calibration experiment with a fluorescence-Mie scattering dual-channel lidar for horizontal near-field detection.The results show that the proposed method not only can effectively reduce the influence of the geometrical factor on calibration accuracy,but also offers better stability.

关 键 词：遥感 荧光激光雷达 水平探测 系统常数标定 荧光-米信号比 

分 类 号：TP706[自动化与计算机技术—检测技术与自动化装置]