Comparison of multi-temporal ASTER images for hydrothermal alteration mapping using a fractal-aided SAM method
作者： H. Shahriari , M. Honarmand , H. Ranjbar
DOI: 10.1080/01431161.2015.1011352
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摘要: The shortwave infrared (SWIR) spectral bands of four multi-temporal images acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra platform were analysed for evaluating effects acquisition properties atmospheric pre-processing levels resulting hydrothermal alteration maps a using fractal-aided Spectral Angle Mapper (SAM) method. Three ASTER level-1B products covering Sar Cheshmeh area in Iran used mapping. These converted to surface reflectance Fast Line-of-sight Atmospheric Analysis Hypercubes (FLAASH) low band 5 was compensated spectra collected rock samples. Level-2 (AST2B05S) SWIR that had already been processed also used. Reference main types extracted each product. threshold angles determined real value–area...
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