基于碘分子滤波器的星载高光谱测温激光雷达瑞利散射信号仿真  

Simulation of Spaceborne High Spectral Resolution Lidar Rayleigh Return Signal based on Iodine Filter

作　　者：余骁[1] 邓小波[1,2] 丁继烈 胡元川[1] 邓洋洋 YU Xiao;DENG Xiao-bo;DING Ji-lie;HU Yuan-chuan;DENG Yang-yang(College of Electronic Engineering, Chengdu University of Information Technology, Chengdu 610225, China;CMA Key Laboratory of Atmospheric Sounding, Chengdu University of Information Technology, Chengdu 610225, China)

机构地区：[1]成都信息工程大学电子工程学院,四川成都610225 [2]中国气象局大气探测重点开放实验室,四川成都610225

出　　处：《成都信息工程大学学报》2018年第2期119-123,共5页Journal of Chengdu University of Information Technology

基　　金：国家自然科学基金资助项目(41475032)

摘　　要：利用碘分子滤波器对大气云或气溶胶米散射信号的强吸收特性,滤除了大部分大气中的云或气溶胶米散射效应的影响,从而利用大气分子瑞利散射信号测量气温。采用星载高光谱激光雷达方程,CALIPSO卫星二级产品,大气分子多普勒展宽效应和碘分子滤波器传输函数计算仿真星载高光谱测温激光雷达瑞利散射信号。结果表明仿真的星载高光谱测温激光雷达瑞利散射信号能准确去除大气中云或气溶胶的影响,能够对大气温度进行高精度反演。High spectral resolution lidar(HSRL） can be used for measuring air temperature.By taking advantage of the high Mie scattering rejection of the iodine filters,HSRLs can retrieve atmospheric temperature with residual Rayleigh scattering.As described in this study,a novel simulation technique based on the HSRL detection principle has been developed to simulate spaceborne HSRL return signals at 532 nm by using cloud-aerosol lidar and infrared pathfinder satellite observation(CALIPSO） cloud/aerosol extinction coefficients product,Doppler broadening theroy,rayleigh scattering theory,and iodine filter＇s transmission characteristics.The result shows that the simulated spaceborne HSRL rayleigh return signals totally block the Mie scattering return signal and improves the quality retrieval of atmospheric temperature.

关 键 词：星载高光谱激光雷达 回波信号仿真 大气温度 

分 类 号：TN958.98[电子电信—信号与信息处理]