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Calculation of mean solar exo-atmospheric irradiances of GF-4
Author(s): Chunying Guo; Runhe Shi; Yunyun Zhou; Maosi Chen
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Paper Abstract

Mean Solar Exo-atmospheric Irradiances (ESUN) is an important parameter to calculate the apparent reflectance based on the satellite sensor measured DN values. GF-4 was launched in 2015, the ESUN of this satellite has not been officially reported, however. To determine which solar spectrum curve is best fitted to GF-4, this study calculated the ESUN of GF-1 at first, by using six distinct solar spectrum curves and spectral response curves of GF-1. Next, the results were validated by comparing with the operational released values. It indicates that the World Radiation Center (WRC) solar spectrum is the most accurate and reliable solar spectrum curve for GF-1, with a total error less than 0.1% for 4 bands. Finally, the ESUN of GF-4 was calculated by making use of the WRC solar spectrum curve.

Paper Details

Date Published: 1 September 2017
PDF: 8 pages
Proc. SPIE 10405, Remote Sensing and Modeling of Ecosystems for Sustainability XIV, 104050Z (1 September 2017); doi: 10.1117/12.2273119
Show Author Affiliations
Chunying Guo, East China Normal Univ. (China)
Joint Lab. for Enviornmental Remote Sensing and Data Assimilation (China)
Runhe Shi, East China Normal Univ. (China)
Joint Lab. for Enviornmental Remote Sensing and Data Assimilation (China)
Joint Research Institute for New Energy and the Environment (China)
Yunyun Zhou, East China Normal Univ. (China)
Joint Lab. for Enviornmental Remote Sensing and Data Assimilation (China)
Maosi Chen, Colorado State Univ. (United States)


Published in SPIE Proceedings Vol. 10405:
Remote Sensing and Modeling of Ecosystems for Sustainability XIV
Wei Gao; Ni-Bin Chang; Jinnian Wang, Editor(s)

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