基于Hyperion数据的普朗铜矿矿物信息提取分析

Extraction and Analysis of Mineral Information of Pulang Copper Ore Based on Hyperion Data

为突破普朗矿区海拔高、交通条件差、传统勘探方法受限的问题,使用高光谱遥感技术以更方便、准确地提取岩矿信息。利用Hyperion数据,采取最小噪声分离变换以及纯净像元指数法提取纯净像元作为端元,通过N维可视化分析法获得端元光谱;然后利用光谱角制图法提取研究区蚀变矿物,并与已知的地质资料结合分析,验证此方法的可行性。结果显示,高光谱遥感可以精确地识别蚀变矿物种类并显示分布范围,同时能够进行矿物填图,提高了蚀变信息的可利用性,对普朗铜矿区蚀变信息的遥感提取具有重要意义。

In order to overcome the problems of high altitude,poor traffic conditions and limited traditional exploration methods in Pulang ore district,hyperspectral remote sensing technology is used to extract rock and ore information more conveniently and accurately.Using Hyperion data,the pure pixel is extracted as the end element by the minimum noise separation transform and the pure pixel index method,and the end element spectrum is obtained by N-dimensional visualization analysis.Then,spectral Angle mapping is used to extract altered minerals in the study area,and combined with known geological data analysis,to verify the feasibility of this method.The results show that hyperspectral re-mote sensing can accurately identify the types of altered minerals and display the distribution range.At the same time,the results show that it can map the minerals and improve the availability of alteration information,which is of great significance for remote sensing extraction of alter-ation information in the Pulang copper ore district.