摘要
遥感成矿探测技术关键在于成矿构造及蚀变矿物信息的提取。以甘肃酒泉党河—南山地区为研究区,基于ETM数据和ASTER遥感数据,利用主成分变换、掩膜分析、阈值分割等方法,从Landsat-7 ETM数据中提取矿化蚀变信息并预测可能成矿的区域。该方法准确、有效地消除了云、雪等干扰信息,利用该方法获得的矿化蚀变信息与已知矿点有很好的一致性,因此用该方法提取蚀变信息是可行的。
Remote sensing technology can detect alteration information.Choose Danghe-Nanshan district as the study area,based on ETM and ASTER remote sensing data,using principal component transform,mask analysis,threshold segmentation method,ectraction alteration information from the Landsat-7 ETM and forecast possible mineralization area.The method is accurate,effective,eliminating cloud,snow and other interference information,the use of the information obtained with the known mineralization alteration minerals point is very consistent,the method is helpful for extraction of alteration information.
出处
《遥感技术与应用》
CSCD
北大核心
2011年第4期482-488,共7页
Remote Sensing Technology and Application
关键词
ETM
蚀变信息
主成分变换
成矿预测
ETM
Alteration information
Principal Component Analysis（PCA）
Metallogenic prognosis
