Lithologic mapping using LANDSAT ETM+ and ASTER data
运用LANDSAT ETM+和ASTER数据进行岩性分类

The performance of lithologic mapping using both ASTER and LANDSAT ETM+ data was evaluated in this paper. Lithologic classifications using different spectral regions of ASTER data, different combination of them, and ETM+ data were performed respectively, especially using all ASTER and ETM+ bands. The results showed that different spectral regions of ASTER data produced different mapping accuracies. ASTER data obtained better performance in lithologic classification than that of using ETM+ data. Classification with all ASTER and ETM+ bands combined achieved high overall accuracy and Kappa coefficient, compared to those obtained with ASTER data or ETM+ data alone, which may indicate that both data provide complementary information for lithologic discrimination.