Acta Optica Sinica, Volume. 36, Issue 7, 701001(2016)
Experiment and Analysis of On-Orbit Radiometric Calibration for Remote Sensors Based on In-Site Automated Observation Technology
By means of measuring the surface reflectance by an automated test-site radiometer (ATR), measuring the atmospheric parameters by CE318 sun-photometer, and measuring the diffuser-to-globe factor by the diffuser-to-globe irradiance meter, a hyperspectral surface reflectance at the time of overpass is determined. Based on the reflectance-based method, absolute radiometric calibration experiments with in-site automated observation at visible to near-infrared bands 1-7 of the moderate resolution imaging spectroradiometer (MODIS)/Aqua and MODIS/Terra are performed. The results show that the relative deviation in top-of-atmosphere (TOA) spectral radiances is less than 4% obtained from the in-site automated observation radiometric calibration (AORC) method and from MODIS/Aqua and MODIS/Terra, which indicates the in-site AORC method is at the same level of calibration accuracy with the manual calibration methods. The feasibility of the in-site AORC method is testified.
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Qiu Ganggang, Li Xin, Wei Wei, Zhang Quan, Zheng Xiaobing. Experiment and Analysis of On-Orbit Radiometric Calibration for Remote Sensors Based on In-Site Automated Observation Technology[J]. Acta Optica Sinica, 2016, 36(7): 701001
Category: Atmospheric Optics and Oceanic Optics
Received: Nov. 23, 2015
Accepted: --
Published Online: Jul. 8, 2016
The Author Email: Ganggang Qiu (qiugg@mail.ustc.edu.cn)