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

Science in China Series D: Earth Sciences - Tập 51 - Trang 1169-1178 - 2008
JianGuang Wen1,2, QinHuo Liu1, Qing Xiao1,3, Qiang Liu1, XiaoWen Li1
1State Key Laboratory of Remote Sensing Science, Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University, Beijing, China
2Graduate University of Chinese Academy of Sciences, Beijing, China
3Beijing Research Institute of Uranium Geology, Beijing, China

Tóm tắt

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.

Tài liệu tham khảo

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