摘要
2018年我国发射的高分五号卫星是世界首颗实现对大气和陆地综合观测的全谱段高光谱卫星,可以获取从390 nm到2500 nm共330个谱段的高光谱数据。本文对阿尔金东段柳城子一带的高分五号高光谱遥感数据进行数据处理试验,得到较合理高效的预处理方法和较完整流程;运用端元波谱法和光谱吸收特征方法开展矿物提取与识别等应用研究,提取了绿泥石、黄钾铁矾、绢云母等蚀变矿物,识别出了具有一定示矿意义的变火山岩、辉橄岩等找矿目标层。初步应用结果表明:我国自助研发的高分五号卫星高光谱数据,可对岩矿类别、蚀变矿物进行有效探测,为区域地质调查、矿产资源勘查等行业提供可靠优质的高光谱数据,将在地质矿产领域具有广阔的应用前景。
GF-5 satellite,launched in 2018 by China,is the world’s first full-spectrum hyperspectral satellite capable of comprehensive observation for atmosphere and land.It can obtain 330 spectral bands 390 to2500 nm.In this paper,the data processing experiment of GF-5 satellite in Liuchengzi area of eastern Alkin section is carried out to obtain a more reasonable and efficient preprocessing method and a more complete process.The end-element spectral method and spectral absorption characteristic method were used to carry out the applied research of mineral extraction and recognition,and the altered minerals such as chlorite,jarosite and sericite were extracted,and the target strata of metavolcanite and pyroxite were identified.The preliminary application results show that the self-developed GF-5 satellite data can effectively detect the types of rock minerals and altered minerals,provide reliable and high-quality hyperspectral data for regional geological survey,mineral resources exploration and other industries,and will have a broad application prospect in the field of geology and minerals.
作者
宿虎
陈美媛
杨晓辉
纪晓风
杨菁
王玉玺
何天福
SU Hu;CHEN Mei-yuan;YANG Xiao-hui;JI Xiao-feng;YANG Jing;WANG Yu-xi;HE Tian-fu(Geological Survey of Gansu Province,Lanzhou 730000,China)
出处
《甘肃地质》
2020年第1期47-57,共11页
Gansu Geology
基金
甘肃省省级基础地质调查项目“甘肃省多坝沟地区1∶5万矿产远景调查”(20151616)
关键词
高分五号卫星
高光谱
柳城子一带
地质找矿
GF-5 satellite
hyperspectral
Liuchengzi area
geological prospecting
