Earth Observing-1 Hyperion: 2001-Present

The Earth Observing-1(EO-1) satellite was launched on November 21, 2000 by the U.S. Geological Survey (USGS) and the National Aeronautics and Space Administration (NASA) as a one-year technology demonstration mission to evaluate the performance of advanced capabilities for future space missions. The EO-1 mission validated highly integrated multispectral data from the Advanced Land Imager (ALI) sensor and hyperspectral imaging data from the Hyperion sensor. After the initial technology mission was accomplished, NASA and the USGS agreed to continue the EO-1 program due to high interest in the specialized data from scientific communities.

EO-1 Data products consist of imagery collected during the original one-year mission, as well as more recent Data Acquisition Requests (DARs) from the EO-1 Extended Mission. EO-1 scenes are processed to Level 1Gst (L1Gst) and images with adequate ground control points are processed to Level 1T (L1T). L1Gst and L1T products are provided in GeoTIFF format. Scenes that have been processed to L1T are also available as Full Resolution Browse and GIS Ready Bundle products in JPEG format. Level 1R (L1R) products in HDF format are only available for Hyperion data.

地球观测1号（Earth Observing-1, EO-1）卫星由美国地质调查局（U.S. Geological Survey, USGS）与美国国家航空航天局（National Aeronautics and Space Administration, NASA）于2000年11月21日联合发射，初始定位为为期一年的技术验证任务，旨在评估未来航天任务所需的先进技术性能。EO-1任务成功验证了先进陆地成像仪（Advanced Land Imager, ALI）传感器获取的高集成度多光谱数据，以及Hyperion传感器获取的高光谱成像数据。在初始技术验证任务完成后，鉴于全球科学界对该任务获取的专用科学数据抱有极高兴趣，NASA与USGS同意继续推进EO-1项目。

EO-1数据集产品涵盖初始为期一年任务期间采集的影像数据，以及EO-1扩展任务阶段通过最新数据获取请求（Data Acquisition Requests, DARs）获取的影像。EO-1影像场景会被处理至1Gst级（Level 1Gst, L1Gst）；若影像拥有足够的地面控制点，则会被进一步处理至1T级（Level 1T, L1T）。L1Gst与L1T级产品均以GeoTIFF格式提供。已完成L1T级处理的影像场景，还可获取JPEG格式的全分辨率预览影像与GIS就绪捆绑包产品。仅Hyperion传感器数据可提供HDF格式的1R级（Level 1R, L1R）产品。