多通道自校准热红外辐射计实验室定标及比对验证  

Laboratory Calibration and Comparison Verification ofMulti-channel Self-calibration Infrared Radiation Thermometer

作　　者：孙彦东 郝小鹏[2] 谢臣瑜 周晶晶 曾兵[1] 宋健[2] 凌玲 SUN Yan-dong;HAO Xiao-peng;XIE Chen-yü;ZHOU Jing-jing;ZENG Bing;SONG Jian;LING Ling(College of Mechanic and Electronic Engineering,Chengdu University of Technology,Chengdu,Sichuan 610059,China;Remote Sensing Laboratory,Devision of Thermal Metrology Science,National Institute of Metrology,Beijing 100029,China)

机构地区：[1]成都理工大学机电工程学院,四川成都610059 [2]中国计量科学研究院热工计量科学研究所遥感实验室,北京100029

出　　处：《计量学报》2023年第10期1494-1502,共9页Acta Metrologica Sinica

基　　金：国家重点研发计划(2018YFB050480300);国家自然科学基金(12075229,62031018)。

摘　　要：热红外辐射计在获取野外地物信息和验证遥感卫星观测数据方面起着至关重要的作用,其定标精度直接影响到遥感数据分析的精度和应用的水平。探讨多通道自校准热红外辐射计的设计思想,进行了实验室定标实验和重复性实验,验证了长时间运行状态下仪器测量数据的水平,得到仪器辐射亮温的不确定度为0.27 K。与主流辐射计进行了实验室测试分析,对比二者所得定标结果的准确性,多通道自校准热红外辐射计最大偏差值为0.26℃,整体偏差在0.3℃以内,通过户外草地测试实验验证了仪器的测量水平。结果表明多通道自校准热红外辐射计具有较高的精度水平,能够满足外场长时间、多通道、高精度的工作要求,为外场定标提供了有力的数据支撑。The thermal infrared radiometer is critical for gathering field data and validating remote sensing satellite observation data.The accuracy of its calibration has a direct impact on the accuracy and application level of remote sensing data analysis.The design concept of a multi-channel self-calibration infrared radiation thermometer is primarily discussed.The laboratory calibration and repeatability experiments are performed to validate the level of instrument measurement data under long-term operation,and the uncertainty of instrument radiation brightness temperature is 0.27 K.The mainstream radiometer is used for the laboratory test analysis,and the accuracy of the calibration results are compared.The maximum deviation of the multi-channel self-calibration infrared radiation thermometer is 0.26℃,and the overall deviation is within 0.3℃.The measurement level of the instrument is verified through outdoor grassland testing experiments.The results show that the multi-channel self-calibration infrared radiation thermometer has a high level of accuracy,and can meet the requirements of long-term,multi-channel and highprecision work in the field,providing data support for the field calibration.

关 键 词：计量学 热红外辐射计 辐射定标 自校准 遥感观测 比对实验 

分 类 号：TB942[一般工业技术—计量学]