航空高光谱遥感矿物信息提取技术及其应用进展——以中国西部成矿带调查为例

为推进航空高光谱遥感矿物信息提取技术及其在地质工程化中的应用,2010—2015年,以我国西部成矿带为调查区,使用CASI/SASI/TASI航空高光谱数据,在进行矿物光谱特征分析、高光谱影像数据预处理、矿物信息提取、蚀变异常信息筛选及区域找矿预测基础上,编制了矿物种类分布图、单矿物丰度分布图和找矿预测图等高光谱地质调查系列专题图件; 建立了一套高光谱遥感矿物填图技术体系,解决了高光谱数据预处理与矿物提取等方面的技术问题,推进了地质填图向精细化和微观化方向发展。该研究为高光谱技术在地质工程化中的应用奠定了基础,丰富了地质填图的产品类型和内容,并服务于地质找矿等地质工作。

Mineral information extraction technology by airborne hyperspectral remote sensing and its application progress: An example of mineralization belts of western China

In order to improve the extraction technology of mineral information from airborne hyperspectral and boost its application in geological engineering, the authors have completed several types of thematic maps based on CASI/SASI/TASI airborne hyperspectral data, including minerals species and abundance maps, as well as ore prospecting map from 2010 to 2015. All these maps were based on the mineral spectral feature analysis, hyperspectral image preprocessing, mineral information extraction, alteration anomaly information screening and regional prospecting prediction in mineralization belts of western China. A set of hyperspectral technique series was built to solve the problems of image preprocessing and minerals extraction and improve the airborne hyperspectral mapping to be more accurate and microcosmic. These investigations would help to build the foundation for hyperspectral applications in geological engineering and would be helpful to the traditional geological mapping and ore prospecting work.