Modeling the land surface reflectance for optical remote sensing data in rugged terrain

• Published in: Science China. Earth sciences 2008-08, Vol.51 (8), p.1169-1178
• Main Authors: Wen, JianGuang, Liu, QinHuo, Xiao, Qing, Liu, Qiang, Li, XiaoWen
• Format: Article
• Language: English
• Subjects: Computer based modeling; Earth and Environmental Science; Earth Sciences; Landsat; Radiative transfer; Reflectance; Remote sensing; Studies; Topography
• ISSN: 1006-9313; 1674-7313; 1862-2801; 1869-1897
• DOI: 10.1007/s11430-008-0085-5

A model for topographic correction and land surface reflectance estimation for optical remote sensing data in rugged terrian is presented. Considering a directional-directional reflectance that is used for direct solar irradiance correction and a hemispheric-directional reflectance that is used for atmospheric diffuse irradiance and terrain background reflected irradiance correction respectively, the directional reflectance-based model for topographic effects removing and land surface reflectance calculation is developed by deducing the directional reflectance with topographic effects and using a radiative transfer model. A canopy reflectance simulated by GOMS model and Landsat/TM raw data covering Jiangxi rugged area were taken to validate the performance of the model presented in the paper. The validation results show that the model presented here has a remarkable ability to correct topography and estimate land surface reflectance and also provides a technique method for sequently quantitative remote sensing application in terrain area.