GF-5 AHSI新疆东天山高光谱数据地质精细特征分类图

高分五号卫星(GF-5)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，其上搭载的可见短波红外高光谱相机（AHSI）是国际上首台具有自主知识产权的宽谱宽幅星载高光谱成像载荷。封面图片为GF-5 AHSI于2019-03-20获取的新疆哈密东天山各地层及岩体等高光谱数据地质特征分类图。通过高光谱数据提取的32个主类，划分为不同颜色，有效区分各地层砂岩，变质岩，中基性到酸性岩体，蚀变带等地质特征信息，可识别出多个已知的矿区（点）信息，以及一些未知矿化信息异常区，这标志着利用高光谱数据在全球大范围能源矿产资源定量化探测成为可能。GF-5 AHSI已广泛应用于地质岩性矿物精细填图及油气资源勘查、生态环境与水质监测、土壤肥力及重金属含量反演、作物长势及产量预测、植被精细分类及生产力评估、海洋与海岸带监测等领域。

GF-5 AHSI geological characteristics map in East Tianshan, Xinjiang

GF-5 is the world's first full-spectrum hyperspectral satellite to achieve comprehensive observations of the atmosphere and land. The visible short-wave infrared hyperspectral camera (AHSI) mounted on GF-5 is the world's first wide-spectrum wide-swath spaceborne hyperspectral imaging payload with independent intellectual property.The cover image shows the geological feature classification map of hyperspectral data of layers and rock masses in East Tianshan in Hami, Xinjiang, which was acquired by AHSI on March 20, 2019. The 32 main categories extracted from hyperspectral data are divided into different colors, which effectively distinguish geological characteristics such as sandstone, metamorphic rock, medium basic to acidic rock masses, and alteration zone in various layers. It can identify multiple known information of mineral area or mineral spot, as well as some anomalous areas of unknown mineralization information.GF-5 AHSI is widely used in fine mapping of lithologic geological minerals and mineral resources, exploration of oil and gas resources, ecological environment and water quality detection, soil fertility retrieval of heavy metal content, crop growth and yield prediction, fine vegetation classification and productivity assessment, marine and coastal zone monitoring, etc.