星载新一代多波束测云激光雷达设计与仿真(特邀)  

Design and Simulation of a Multi-Beam Cloud Lidar Based on a New Generation Polar Orbit Satellite(Invited)

作　　者：毕德仓[1,2,3,4] 刘继桥 毕紫玉[1,2,4] 商建 杨勇 信丰鑫[1] 张鹏飞[6] 王皓飞 边志强 陈卫标 胡秀清[5] Bi Decang;Liu Jiqiao;Bi Ziyu;Shang Jian;Yang Yong;Xin Fengxin;Zhang Pengfei;Wang Haofei;Bian Zhiqiang;Chen Weibiao;Hu Xiuqing(Aerospace Laser Technology and System Department,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Key Laboratory of Space Laser Communication and Detection Technology,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;National Satellite Meteorological Center(National Center for Space Weather),China Meteorological Administration,Beijing 100081,China;Shanghai Institute of Satellite Engineering,Shanghai 201109,China)

机构地区：[1]中国科学院上海光学精密机械研究所空天激光技术与系统部,上海201800 [2]中国科学院上海光学精密机械研究所空间激光传输与探测技术重点实验室,上海201800 [3]中国科学院上海光学精密机械研究所上海市全固态激光器及应用技术重点实验室,上海201800 [4]中国科学院大学材料与光电研究中心,北京100049 [5]中国气象局国家卫星气象中心(国家空间天气监测预警中心),北京100081 [6]上海卫星工程研究所,上海201109

出　　处：《光学学报》2024年第18期133-141,共9页Acta Optica Sinica

摘　　要：针对全球云、气溶胶光学性质的量化及其对气象、气候、地球环境的影响,提出一种星载新一代多波束测云激光雷达(M^(3)CL)探测方案。该方案采用三体制、四波长、九波束的推扫测量方式形成地面九波束20 km推扫幅宽,即单激光器产生355 nm、532 nm、1064 nm和1625 nm 4个波长的激光,其中532 nm包含9个波束,波束间隔为3.05 mrad;光电接收核心波束355 nm/532 nm双波长采用高光谱探测和偏振探测,1064 nm、1625 nm为回波能量探测,另加边缘8波束532 nm能量探测。从理论上分析了探测误差限与探测信噪比的关系,并给出测云激光雷达系统参数。经过模拟仿真,给出了820 km轨道云气溶胶的散射系数探测误差分布,其契合未来极轨卫星新一代测云激光雷达的探测需求。Objective Clouds are a crucial factor in numerical weather forecasting(NWF),significantly influencing weather-related disasters such as hail,storms,and other extreme conditions.Accurate global measurements of horizontal and vertical distributions of clouds and aerosols,as well as their optical and micro-physical properties,are necessary to assess their influence on human health,the environment,and regional climate and precipitation.The China Meteorological Administration(CMA)and the World Meteorological Organization(WMO)have outlined specific requirements for cloud phase,cloud top height,aerosol extinction coefficient,and measurement error limits.Previous payloads such as CALIPSO(NASA,operational for 17 years)and ACDL(SIOM,operational for over 2 years)have demonstrated partial cloud measurement capabilities.The EarthCARE payload,including the 355 nm HSRL scheme developed by ESA,was launched on May 29,2024.However,there remains a gap in providing certain-swath,multi-wavelength,multi-scheme,high-precision lidar measurement data.Methods To quantify the influences of clouds on precipitation,regional climate,and the global environment,we propose the concept of a multi-wavelength,multi-function,multi-beam cloud lidar(M^(3)CL)based on a polar orbit satellite.The M^(3)CL design incorporates high spectral resolution lidar(HSRL),polarization detection,and backscattering detection schemes,with four wavelengths(355,532,1064,and 1625 nm)and nine beams in a push-broom configuration,as shown in Fig.1.Fabry-Perot etalons and iodine cells are used as high spectral resolution filters for 355 and 532 nm channels,respectively.The 355 and 532 nm channels utilize polarization detection,while the remaining eight 532 nm beams are symmetrically arranged on either side of the central beam,forming a 20 km swath.We derive theoretical upper bounds for cloud and aerosol detection errors based on HSRL equations and system calibration constants.Using the parameters set in Table 1,the atmosphere/cloud mode database,and lidar equations,we simulat

关 键 词：遥感 星载激光雷达 高光谱分辨率激光雷达 云 气溶胶 

分 类 号：TN958.98[电子电信—信号与信息处理]