Title :
A method for the retrieval of aerosol optical thickness on CBERS data from top-of-atmosphere radiance
Author :
Zhang, Xin ; Zhao, Xiang ; Li, Bing ; Hu, Ni ; Li, Qing ; Liu, Suhong
Author_Institution :
State Key Lab. of Remote Sensing Sci., Beijing Normal Univ., Beijing, China
Abstract :
A method for the retrieval of aerosol optical thickness on China-Brazil Earth Resources Satellite (CBERS) data has been introduced. This algorithm is designed to estimate precise Aerosol Optical Thickness (AOT) only using Visible to Near-infrared spectral bands (400-900nm) information. The first part of this paper is devoted to the description of this method; outline the main steps in this correction process. The validation task is detailed in the second part. Many groups of simulated data was used to validate this algorithm, the R-squared equals to 0.98 and the RMSE equals to 0.052 shows the method has a good performance. Then an image of CBERS was selected to validate this method. The surface reflectance after atmospheric correction is much closer to the real spectrum.
Keywords :
aerosols; atmospheric optics; atmospheric techniques; geophysical image processing; CBERS data; China-Brazil Earth Resources Satellite data; aerosol optical thickness; atmospheric correction; correction process; near-infrared spectral band information; surface reflectance; top-of-atmosphere radiance; validation task; visible spectral band information; Adaptive optics; Atmospheric modeling; Land surface; Optical reflection; Optical sensors; Reflectivity; Vegetation mapping; Aerosol Optical Thickness; Atmospheric Correction; CBERS; Surface Reflectance;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1003-2
DOI :
10.1109/IGARSS.2011.6050116
