基于艇载太赫兹辐射计的大气温度廊线反演  

Inversion of Atmospheric Temperature Based on THz Radiometer

作　　者：朱家玮 周晨[1] 赵正予[1] 刘祎 ZHU Jiawei;ZHOU Chen;ZHAO Zhengyu;LIU Yi(School of Electronic Information,WuHan University,WuHan 430072)

机构地区：[1]武汉大学电子信息学院,武汉430072

出　　处：《空间科学学报》2025年第1期125-134,共10页Chinese Journal of Space Science

基　　金：国家自然科学基金青年项目资助(42204161)。

摘　　要：基于武汉大学研制的艇载式太赫兹探测仪ATMI(Airborne THz Measure Instrument),分析ATMI在地基与空基探测模式下对大气温度廊线的反演能力.针对ATMI样机的硬件参数,在空基和地基测量模式下,建立不同纬度下大气辐射传输模型,讨论在不同纬度下ATMI使用BP神经网络算法对于大气温度廊线的反演能力.样机出厂后在中纬度地区进行了一个月的地基实测,通过实测数据验证ATMI样机对于大气温度廊线反演的能力.实测结果表明,所研发的ATMI样机在地基反演中在0~36 km高度范围内精度优于1 K,在一定高度范围内最高精度可优于0.3 K,证明了所研制的艇载式太赫兹探测仪对大气温度廊线反演的有效性与准确性,稳定度与精度达到设计指标,显示其在太赫兹科学和临近空间环境监测中的广泛应用潜力.Based on the airborne terahertz detector ATMI(Airborne THz Measure Instrument)developed by Wuhan University,this paper analyzes the inversion ability of ATMI for atmospheric temperature profiles in ground-based and air-based detection modes.In view of the hardware parameters of the ATMI prototype,under air-based and ground-based measurement modes,atmospheric radiation transfer models at different latitudes are established.The inversion ability of ATMI using the BP neural network algorithm for atmospheric temperature profiles at different latitudes is discussed.After the prototype leaves the factory,one-month ground-based field measurements are carried out in mid-latitude regions.The field measurement data are used to verify the inversion ability of the ATMI prototype for atmospheric temperature profiles.The field measurement results show that for the developed ATMI prototype,in the ground-based inversion,the accuracy is better than 1 K in the altitude range of 0~36 km,and within a certain altitude range,the highest accuracy can be better than 0.3 K.This proves the effectiveness and accuracy of the developed airborne terahertz detector for the inversion of atmospheric temperature profiles.Its stability and accuracy have reached the design specifications,indicating its wide application potential in terahertz science and near-space environment monitoring.

关 键 词：大气温度廊线反演 艇载式太赫兹探测仪 BP神经网络 大气辐射传输 

分 类 号：P414[天文地球—大气科学及气象学]