基于Sentinel-2A的矿化蚀变异常信息提取应用  

Abnormal Information Extraction and Application of Mineralization Alteration Based on Sentinel-2A

作　　者：王磊[1] 杨斌[1] 李丹[1] 陈财 WANG Lei;YANG Bin;LI Dan;CHEN Cai(School of Environment and Resources,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《西南科技大学学报》2018年第1期55-61,74,共8页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金项目(41201541)

摘　　要：通过对Sentinel-2A影像数据的光谱特征分析,并结合遥感矿化蚀变异常信息的提取理论,选取四川省康定雅拉地区为研究区域,采用主成分分析法提取羟基蚀变异常信息,通过图像密度分割和蚀变信息面积统计,结合Landsat 8遥感数据提取分析结果和研究区地质图进行对比分析。结果表明,Sentinel-2A遥感数据进行矿化蚀变异常信息提取具有良好的可行性,并且提取精度高,提取蚀变信息面积广,可为Sentinel-2A新型光学遥感数据在遥感找矿领域的运用提供参考。Based on the spectral characteristics of Sentinel-2A image data and the extraction theory of anomalous information of remote sensing mineralization alteration,the Kangdian-Yala area in Sichuan Province was selected as the research area,and the principal component analysis method was used to extract the abnormal information of hydroxyl alteration.Through image density segmentation and alteration information area statistics,combined with Landsat 8 remote sensing data,the extracted analysis results and geological map of the study area were compared and analyzed.The results show that:Sentinel-2A remote sensing data for mineralization alteration anomaly information extraction has good feasibility,with high extraction accuracy and wide extraction of alteration information area.The results will provide reference for remote sensing prospecting applications of sentinel-2A new optical remote sensing data.

关 键 词：Sentinel-2A 羟基蚀变信息 主成分分析法 遥感找矿 

分 类 号：P627[天文地球—地质矿产勘探] TP79[天文地球—地质学]