太赫兹大气临边探测技术研究进展  

Advances in Terahertz Atmospheric Limb Sounding Techniques

作　　者：王文煜 许健 王振占 陆浩 刘璟怡 张德海 WANG Wenyu;XU Jian;WANG Zhenzhan;LU Hao;LIU Jingyi;ZHANG Dehai(Key Laboratory of Microwave Remote Sensing,National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院国家空间科学中心微波遥感技术重点实验室,北京100190

出　　处：《地球科学进展》2025年第1期39-56,共18页Advances in Earth Science

基　　金：国家自然科学基金项目(编号:42105130)资助.

摘　　要：地球中高层大气是研究大气过程乃至气候变化的重要区域,目前对中高层大气的长时间观测和数据分析仍然非常欠缺。太赫兹临边探测技术能够全天时、近乎全天候地获得较高垂直分辨率(1~5 km)的大气廓线,特别是对部分臭氧损耗相关的卤素气体敏感,成为测量地球中高层大气参数的重要手段。围绕太赫兹临边探测技术,系统回顾了太赫兹载荷的技术发展历程和现状:太赫兹临边探测已成功实现中高层大气中多种痕量气体的高垂直分辨率廓线测量,但现有载荷仍面临系统体积庞大、噪声抑制能力不足等瓶颈问题;基于最新预研的载荷方案,下一代太赫兹探测系统主要侧重于低噪声和小型化技术的发展;当前主流的物理反演算法计算效率较低,通过引入人工智能技术,可在保证精度的前提下显著提升反演效率;未来亟需突破太赫兹低噪声接收机和高分辨率数字谱仪等核心技术,进一步推动我国太赫兹临边探测技术的发展。Long-term observations and data analysis of the Earth's middle and upper atmosphere,an important region for studying atmospheric processes and even climate change for studying human activities and climate change,are still insufficient.Terahertz limb-sounding technology can obtain atmospheric profiles all day and near all weather with high vertical resolution(approximately 1~5 km)and is particularly sensitive to some of the halogen gases associated with ozone depletion,making it an important method for measuring the Earth's middle and upper atmospheric parameters.The basic principles and advantages of terahertz limb sounding are summarized,the basic framework of the terahertz radiometer is introduced,the development of terahertz limb sounding technology domestically and internationally in the past three decades is discussed,the latest research status is reviewed,the future development direction is discussed,and terahertz limb sounding technology is summarized and outlooked to provide a reference basis for related research.

关 键 词：太赫兹辐射计 临边探测 中高层大气 

分 类 号：P412[天文地球—大气科学及气象学]