Authors
Yi Dong, Wei Su, Fu Xuan, Jiayu Li, Feng Yin, Jianxi Huang, Yelu Zeng, Xuecao Li, Wancheng Tao
Publication date
2023/12/1
Journal
The Egyptian Journal of Remote Sensing and Space Science
Volume
26
Issue
3
Pages
732-746
Publisher
Elsevier
Description
Accurate land surface reflectance plays an important role in the accurate inversion of surface parameters, and atmospheric correction plays a decisive role in obtaining accurate reflectance. For GF-1 WFV and GF-6 WFV images, there are two major issues to be addressed, including the spectral differences between nadir with far off-nadir pixels and the spatial variability of atmospheric components for wide imaging. Therefore, this study focuses on these two issues using the Sensor Invariant Atmospheric Correction (SIAC) method. Our results reveal that the SIAC approach improves the correlation accuracy from 0.8868 to 0.9173 for GF-1 WFV image compared with Sentinel-2 reflectance, from 0.9530 to 0.9620 for GF-6 WFV image compared with the results using FLAASH model. For alleviating wide-swathed anisotropy, the directional imaging angle is calculated with the result ranging from 5.6450° to 33.7497° …
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Scholar articles
Y Dong, W Su, F Xuan, J Li, F Yin, J Huang, Y Zeng… - The Egyptian Journal of Remote Sensing and Space …, 2023