基于多波束偏振探测体制的星载云-气溶胶探测雷达设计和仿真  

Design and Simulation of Cloud-aerosol Detection LiDAR Based on Multi Beam Polarization Detection System

作　　者：李飞 赵一鸣 张鹏飞 李静 魏祥通 王丽东 于勇 LI Fei;ZHAO Yiming;ZHANG Pengfei;LI Jing;WEI Xiangtong;WANG Lidong;YU Yong(Beijing Research Institute of Telemetry,Beijing 100076,China;Shanghai Institute of Satellite Engineering,Shanghai 201100,China)

机构地区：[1]北京遥测技术研究所,北京100076 [2]上海卫星工程研究所,上海201100

出　　处：《遥测遥控》2024年第3期91-101,共11页Journal of Telemetry,Tracking and Command

基　　金：省级课题“新一代低轨风云卫星测云效能分析研究项目”(10406)。

摘　　要：星载激光探测载荷具有云、气溶胶垂直廓线的探测能力。国内外已有的载荷,例如美国Calipso卫星的Caliop雷达、国内“句芒号”卫星的多波束激光雷达和大气污染监测卫星的大气探测激光雷达,为单波束云-气溶胶探测,单次探测区域较窄。提出了多波束云-气溶胶探测激光雷达系统,该系统工作于800 km卫星轨道,采用多波束探测体制,扩展雷达的探测幅宽到30 km,中心波束采用双波长偏振探测获取大气气溶胶、云的垂直廓线和粒子种类,边缘波束采用单波长探测获取云垂直廓线,可极大地提高数据获取效率。采用单光子探测和模拟探测结合的探测方式,模拟探测保证探测的动态范围,单光子探测具有极高的探测灵敏度,降低雷达所需的激光能量,降低雷达的重量和功耗。最终通过模拟仿真,验证了星载多波束云-气溶胶探测雷达对典型云、气溶胶的探测效果。The space-borne laser detection system has the capability to detect the vertical profile of clouds and aerosols.Existing payloads,such as the Caliop radar on the US Calipso satellite,the multi-beam LiDAR on the domestic "Goumang" satellite,and the atmospheric detection lLiDAR on air pollution monitoring satellites,are limited to single-beam cloud-aerosol detection with a narrow detection area.A proposed solution is a multi-beam cloud-aerosol detection LiDAR system that operates in a satellite orbit of 800 km and utilizes a multi-beam detection system to extend radar coverage to 30 km.The central beam employs dual-wavelength polarization detection for obtaining vertical profiles and particle species of atmospheric aerosols and clouds,while the edge beam uses single-wavelength detection for cloud profiling.This approach significantly improves data acquisition efficiency through simulation-based verification of dynamic range and high sensitivity single photon detections which reduce laser energy requirements,as well as radar weight and power consumption.Finally,through simulation,the detection effect of space-borne multi-beam cloud-aerosol detection radar on typical clouds and aerosols is verified.

关 键 词：多波束 模拟探测 单光子探测 激光雷达 

分 类 号：TN958.98[电子电信—信号与信息处理]