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中文摘要：
采用两种方法相结合提取矿物蚀变信息，能够有效地减少伪异常信息，提高信息提取精度与效率。以河南省铝土矿区为研究区，引入主成分分析、独立成分分析分别提取研究区蚀变信息，并求得两种方法分析结果的交集。采用16个实地勘探矿床点数据资料进行结果分析，发现通过两种方法提取共同蚀变信息区，可以大大缩小野外勘探面积，减少野外勘探工作量，提高工作效率，对利用遥感技术圈定成矿靶区具有重要的指导意义。
英文摘要：
By combining two methods to extract mineral alteration information ,they can effectively reduce the false anomaly information ,and improve the accuracy and efficiency of information extraction .Taking bauxite mining area of He’nan Province as the study area ,this pape introduces the principle component analysis ,independent component analysis method to extract the alteration information extraction of the study area respectively .Finally 16 bauxite data measured are used to analyze the result that by combining two different methods to extract common alteration information ,they can greatly reduce the field drilling exploration area and the field exploration work ,improve the efficiency of field exploration ,which has important application value on guiding remote sensing technology .
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