APPLICATION OF IN-SITU MEASURED SPECTRA DATA BY ASD FieldSpec3 ON LITHOLOGIC CLASSIFICATION IN SHUIMO-DAHE AREA
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摘要:
以四川省旺苍县水磨—大河地区为研究区, 利用美国ASD FieldSpec 3便携式地物光谱仪野外实测岩矿波谱数据和ASTER遥感影像数据, 基于GIS平台, 根据野外实测的岩石光谱曲线和USGS光谱库的典型岩石光谱曲线提取端元波谱, 对区域影像像元的光谱曲线进行匹配, 采用ENVI4.4软件自动信息提取与人机交互解译相结合的方式, 进行岩性分类, 可以有效地划分区内岩性界线, 满足填图需求, 对辅助该区区域基础地质调查、矿产普查等具有重要的应用价值。
Abstract:This paper chose the Shuimo-Dahe area of Sichuan Wangcang as its research area, use ASTER image and in-situ measured spectra data by ASD FieldSpec3 as the research object, extract mineral endmember information according to rock spectral curve from field survey data and USGS spectral library, match the spectral curve of image pixel, combine ENVI4.4 software for automatic information extraction and man-computer interactive interpretation, to conduct lithology classification, based on GIS, it has an important application value for basic geological survey and mineral survey.
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