新疆卡姆斯特地区星载AHSI矿物填图  

Mineral Mapping Based on Spaceborne AHSI Hyperspectral Data in Kamusite Area of Xinjiang

作　　者：刘洪成[1] 叶发旺[1] 张川[1] 谭宏婕 鲁纳川 LIU Hongcheng;YE Fawang;ZHANG Chuan;TAN Hongjie;LU Nachuan(National Key Laboratory of Remote Sensing Information and Image Analysis Technology,Beijing Research Institute of Uranium Geology,Beijing 100029,China;China University of Geosciences(Beijing),Beijing100083,China)

机构地区：[1]核工业北京地质研究院遥感信息与图像分析技术国家级重点实验室,北京100029 [2]中国地质大学(北京),北京100083

出　　处：《世界核地质科学》2023年第2期395-404,共10页World Nuclear Geoscience

基　　金：中核集团集中研发项目“第四代铀矿勘查关键技术研究与示范(第一阶段)”:“新型关键勘查技术装备研制”(编号:遥SD03-03)资助。

摘　　要：近年来国产卫星高光谱遥感技术获得了迅速发展,其搭载的AHSI高光谱相机为地质填图提供了不同光谱尺度的数据源。为验证不同星源AHSI的矿物填图效果,以新疆卡姆斯特地区为研究区,采用空间分辨率为30 m的GF-5B卫星、GF-5卫星和ZY1-02D卫星载AHIS高光谱数据,通过大气校正以及混合调谐匹配滤波(MTMF)等方法开展了数据处理和矿物填图工作。光谱真实性验证结果表明:星载AHSI高光谱数据大气校正后光谱特征吸收峰位置偏差均小于光谱分辨率;星载AHSI高光谱遥感数据可以提取与成岩和成矿紧密相关的多种蚀变矿物信息,且空间分布状况与航空高光谱数据的蚀变矿物填图结果一致;GF-5B星载AHIS高光谱数据由于信噪比较高,相对于ZY1-02D与GF-5数据提取效果更好;星载AHSI空间分辨率较低,不能对矿物亚系进行有效区分。因此得出结论,星载AHSI高光谱数据矿物填图结果在空间分布上基本可以满足地质普查需求,结合航空等高空间分辨率高光谱遥感数据,在地质勘查领域具有广阔的应用前景。In recent years,the hyperspectral remote sensing technology of domestic satellites has developed rapidly,and the AHSI hyperspectral camera equipped satellites provides data sources of different spectral scales for geological mapping.In order to verify the mineral mapping effect of different types of spaceborne AHSI,this paper made a mineral mapping study in Kamusite area of Xinjiang.The AHIS hyperspectral data of GF-5B satellite,GF-5 satellite and ZY1-02D satellite with the spatial resolution of 30 meters were collected,processed to extract the alteration information extraction by atmospheric correction and mixture tuned matched filtering(MTMF).After spectral authenticity verification,the position deviation of typical mineral characteristic absorption peak was found smaller than the spectral resolution.The study showed that a variety of alteration mineral information closely related to diagenesis and mineralization can be extracted by using spaceborne AHSI hyperspectral data,and the spatial distribution is consistent with the alteration mineral mapping result of aerial hyperspectral data.GF-5B spaceborne AHIS hyperspectral data has a better extraction effect than ZY1-02D and GF-5 data due to higher SNR.However,due to the low spatial resolution,spaceborne AHSI did not distinguished the mineral subclasses effectively.In this study,the spaceborne hyperspectral data can basically meet the needs of geological survey in terms of spatial distribution.It is of great significance to carry out geological detailed investigation combined with aerial hyperspectral data to do large-scale and more detailed and comprehensive geological mapping.

关 键 词：AHSI 光谱尺度 矿物填图 MTMF 光谱真实性 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] P619.14[自动化与计算机技术—控制科学与工程]