Autonomous vicarious calibration based on automated test-site radiometer  

作　　者：邱刚刚 李新 郑小兵 闫静 孙彦港 

机构地区：[1]Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China [2]University of Sciences and Technology of China, Hefei 230031, China [3]Shanghai Maritime University, Shanghai 201306, China

出　　处：《Chinese Optics Letters》2016年第12期70-74,共5页中国光学快报（英文版）

基　　金：supported by the National “863” Program of China(No.2015AA123702);the National Natural Science Foundation of China(Nos.11204318 and61275173)

摘　　要：We employ the in-site automated observation radiometric calibration（AORC） approach to perform vicarious calibration, which does not require the manual efforts of a field team to measure the surface conditions. By using an automated test-site radiometer（ATR）, the surface radiance at any moment in time can be obtained. This Letter describes the AORC approach and makes use of data to compute top-of-atmosphere radiance and compare it to measurements from the Moderate Resolution Imaging Spectroradiometer. The result shows that the relative deviation is less than 5% and the uncertainty is less than 6.2%, which indicates that the in-site AORC maintains an accuracy level on par with traditional calibration.We employ the in-site automated observation radiometric calibration（AORC） approach to perform vicarious calibration, which does not require the manual efforts of a field team to measure the surface conditions. By using an automated test-site radiometer（ATR）, the surface radiance at any moment in time can be obtained. This Letter describes the AORC approach and makes use of data to compute top-of-atmosphere radiance and compare it to measurements from the Moderate Resolution Imaging Spectroradiometer. The result shows that the relative deviation is less than 5% and the uncertainty is less than 6.2%, which indicates that the in-site AORC maintains an accuracy level on par with traditional calibration.

关 键 词：calibration radiometer automated manual compute viewing reflectance deviation correction directional 

分 类 号：P415.1[天文地球—大气科学及气象学]