RADIANT CORRECTION OF ETM+IMAGERY BASED ON DEM AND DERIVATION OF ALBEDO IN HANJIANG RIVER BASIN
ZHU Ye-fei1, ZHANG Wan-chang1, JIANG Jian-jun1,2
1. International Institute for Earth System Science, Nanking University, Nanjing 210093, China;
2. College of Geographical Science, Nanjing Normal University, Nanjing 210097, China
Abstract：This study presents an easy and fast radiant correction approach that can be used to perform atmospheric correction and topographic correction in mountain areas. This approach only needs the selection of two dark pixels in different elevations from ETM+ imagery, and the atmospheric correction based on DEM and dark pixels in different elevations can be conducted so as to get atmospheric and radiant parameters at all elevations. On such a basis, the topographic correction can be carried out and the surface reflectance can be calculated for ETM+ band 1～5 and 7. At last, a band integration approach is used to obtain the total continuous spectral albedo over the study site. The result shows that the method is effective in the inversion of surface albedo.
朱叶飞, 张万昌, 蒋建军. 基于DEM的ETM+图像辐射校正及汉江流域反照率的计算[J]. 国土资源遥感, 2004, 16(3): 8-13.
ZHU Ye-fei, ZHANG Wan-chang, JIANG Jian-jun. RADIANT CORRECTION OF ETM+IMAGERY BASED ON DEM AND DERIVATION OF ALBEDO IN HANJIANG RIVER BASIN. REMOTE SENSING FOR LAND & RESOURCES, 2004, 16(3): 8-13.
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2004, Vol. 16 
