GF-5星载AHSI和航空高光谱矿物填图对比--以新疆雪米斯坦地区为例  

Comparison of Mineral Identification Between GF-5-AHSI and Airborne CASI/SASI Data:A Case Study of Xuemisitan Area,Xinjiang

作　　者：刘洪成[1] 黄涛 鲁纳川 叶发旺[1] 张川[1] LIU Hongcheng;HUANG Tao;LU Nachuan;YE Fawang;ZHANG Chuan(National Key Laboratory of Remote Sensing Information and Image Analysis Technology,Beijing Research Institute of Uranium Geology,Beijing 100029,China;The Fifth Exploration Team of Shandong Coalfield Geology Bureau,Jinan,Shandong 250100,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]山东省煤田地质局第五勘探队,山东济南250100

出　　处：《世界核地质科学》2022年第3期546-553,共8页World Nuclear Geoscience

基　　金：铀矿地质项目“铀矿勘查轻小型短波红外高光谱测量系统研制及试验应用”(编号:遥D1905);“铀资源高光谱遥感智能化勘查关键技术”(编号:遥YY2101)联合资助。

摘　　要：卫星和航空遥感平台获取的高光谱数据各有技术优势,在经济成本上也有很大差异。在数据处理和提取矿物信息技术方法上面既有一致性,也有不同点。本文以新疆雪米斯坦地区GF-5星载AHIS高光谱数据和CASI/SASI航空高光谱数据为数据源,基于不同的空间尺度和光谱尺度高光谱数据矿物填图做对比分析。结果显示,AHIS高光谱数据可以从空间大尺度上提取与成岩和成矿紧密相关的多种矿物信息,但由于空间分辨率较低,识别的矿物种类较少;CASI/SASI航空高光谱数据空间分辨率较高,且根据蚀变矿物特征吸收峰位置差异,识别出的矿物种类更加丰富。两种高光谱数据提取的矿物在空间分布上一致性较好,可以满足地质勘查的一般需求,但考虑到航空数据源获取成本问题,在未来地质应用工作中需要寻找一种兼顾两者优点的高光谱遥感数据获取方式。The rapid development of sensor manufacturing technology produced multiple scales of remote sensing data sources with unique advantages.In this paper,GF-5-AHIS satellite data and CASI/SASI airborne data were used to extract the alteration minerals in Xuemisitan region with different spatial and spectral resolution.The result showed that GF-5-AHIS hyperspectral image data can extract the mineral information related to mineralization,but limited mineral species can be distinguished by GF-5-AHIS data because of lower spatial resolution.On the other hand,more abundant mineral species can be distinguished in CASI/SASI data because of higher spectral and spatial resolution.However,the distribution space of extracted minerals from the two hyperspectral data was highly consistent,which showed that hyperspectral data can satisfy the general geology survey of different scales with different resolution data.Considering the final cost of satellite and airborne hyperspectral data,it is necessary to search for a new way of remote sensing which has both advantages of AHIS and CASI/SASI.

关 键 词：高光谱 AHIS CASI/SASI 矿物 矿物填图 

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]