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光谱角技术在多光谱遥感蚀变异常提取工作中的应用
引用本文:丛利民,李国志,王登科,王宝林.光谱角技术在多光谱遥感蚀变异常提取工作中的应用[J].化工矿产地质,2009,31(4):242-246.
作者姓名:丛利民  李国志  王登科  王宝林
作者单位:1. 内蒙古地勘局115地质队,内蒙古乌兰浩特市,137400
2. 内蒙古第十地质矿产勘查开发院,内蒙古赤峰市,024000
3. 内蒙古第四地质矿产勘查开发院,内蒙古集宁市,012000
基金项目:中国地质调查局全国矿产资源潜力评价项目,内蒙古自治区政府科研基金《内蒙古自治区区域成矿规律及重要矿产成矿预测地球化学综合研究》 
摘    要:选择朱拉扎嘎金矿为试验区,ASTER数据为数据源,利用光谱角技术进行蚀变异常提取实验。重点阐述光谱角技术(SAM)在多光谱遥感蚀变异常提取工作中的两个关键技术:内部平均相对反射率法(IARR)大气校正和典型蚀变矿物波谱对应于ASTER波段重采样,最终通过光谱角计算提取了3种蚀变异常,分别为高岭土化蚀变异常、碳酸盐化蚀变组合异常和Fe-OH-蚀变组合异常。

关 键 词:光谱角  ASTER  遥感  朱拉扎嘎  内蒙古

THE APPLICATION OF SAM TEACHNIQUE ON EXTRACTING ALTERATION ABNORMITIES FROM MULTISPECTRAL RS DATA
Cong Limin,Li Guozhi,Wang Dengke,Wang Baolin.THE APPLICATION OF SAM TEACHNIQUE ON EXTRACTING ALTERATION ABNORMITIES FROM MULTISPECTRAL RS DATA[J].Geology of Chemical Minerals,2009,31(4):242-246.
Authors:Cong Limin  Li Guozhi  Wang Dengke  Wang Baolin
Institution:Cong Limin Li Guozhi Wang Dengke Wang Baolin( 1.No. 115 Geological Party, The Inner Mongolia Bureau of Geology and Mineral Exploration, Wulanhot, 13 7400, China ; 2. The Tenth Institude of geology and mineral Exploration and Development, Chifeng Inner Mongolia, 024000, China, 3. The Fourth Institude of geology and mineral Exploration and Development, Jining Inner Mongolia, 012000, China)
Abstract:Taking Zhulazhaga gold deposit as a test area, Extracted alteration abnormities by SAM (Spectra Angle Mapper) from ASTER data. The paper showed tow key teachniques: IARR (Internal Average Relative Reflectance) atmospheric correction and Spectra re-sampling to ASTER bandpass of alterational minerals. As result , Three kinds of alteration abnormities were extracted by SAM , Which are kaolinization alteration abnormities,Fe-OH--bearing alteration abnormities and CO32--bearing alteration abnormities.
Keywords:ASTER
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