SDGSAT-1卫星标准数据产品4级

可持续发展科学卫星 1 号 (SDGSAT-1) 于 2021 年 11 月 5 日在中国太原卫星发射中心成功发射，是全球首颗服务《联合国 2030 年可持续发展议程》的科学卫星，也是中国科学院首颗地球科学卫星。SDGSAT-1 卫星搭载了高分辨率宽幅热红外、微光及多谱段成像仪三种载荷 ( 其主要技术指标见表 1)。通过多载荷协同观测，可以服务于“人类活动痕迹”的精细刻画，为表征人与自然交互作用的 SDGs 实现提供数据支撑。热红外传感器：图像文件按照相机保存为 1 个含 B1、B2、B3 波段的 GeoTIFF 格式的图像文件；多谱段传感器：图像文件按照 A 相机和 B 相机，保存为 2 个含 B1-B7 波段的 GeoTIFF 格式的图像文件；微光传感器：图像文件按照每个相机全色 PL/PH、RGB 合成保存为4个 GeoTIFF 格式的图像文件。浏览图文件是对该景全分辨率图像降 16 倍采样后输出的 JPG 格式文件，文件命名为 *.browse.jpg。缩略图文件则是通过对浏览图降采样的 JPG 格式文件，文件命名为 *.thumb.jpg。
SDGSAT-1 数据包括1级、2级与4级数据产品，其中1级数据产品是在0级产品基础上进行相对辐射校正、波段配准、HDR融合以及RPC 等处理生成的标准产品；；2级产品是在1级标准产品基础上经过几何校正后的产品；4级产品是在1级标准产品基础上利用地面控制点和数字高程模型进行正射校正并按格式规范输出的产品。数据访问与下载地址：http://124.16.184.48:6008/home

The Sustainable Development Science Satellite 1 (SDGSAT-1) was successfully launched from the Taiyuan Satellite Launch Center in China on November 5, 2021. It is the world's first scientific satellite dedicated to serving the UN 2030 Agenda for Sustainable Development, and also the first Earth science satellite developed by the Chinese Academy of Sciences. SDGSAT-1 is equipped with three payloads: high-resolution wide-swath thermal infrared, low-light and multi-spectral imagers, whose main technical specifications are listed in Table 1. Collaborative observation across multiple payloads enables fine characterization of "human activity traces", providing data support for advancing the achievement of SDGs that reflect the interaction between human beings and nature. Thermal infrared sensor: Image files are stored as one GeoTIFF-format file containing bands B1, B2 and B3. Multi-spectral sensor: Image files are stored as two GeoTIFF-format files containing bands B1 to B7 via Camera A and Camera B respectively. Low-light sensor: Image files are stored as four GeoTIFF-format files for panchromatic PL/PH and RGB composite outputs of each camera. The browse image is a JPG-format file generated by 16-times downsampling of the full-resolution scene image, with the file naming convention of *.browse.jpg. The thumbnail image is a JPG-format file obtained by further downsampling the browse image, with the file naming convention of *.thumb.jpg. SDGSAT-1 data covers Level-1, Level-2 and Level-4 data products. Specifically, Level-1 data products are standard products generated by processing Level-0 products with relative radiometric correction, band registration, HDR fusion and RPC. Level-2 products are geometrically corrected products based on Level-1 standard products. Level-4 products are orthorectified products generated using ground control points and digital elevation models based on Level-1 standard products, and output in accordance with standardized format specifications. Data access and download address: http://124.16.184.48:6008/home

搜集汇总

背景与挑战

背景概述

该数据集是SDGSAT-1卫星的4级标准数据产品，源自全球首颗服务联合国2030年可持续发展议程的科学卫星，于2021年发射，搭载热红外、微光和多谱段成像仪，用于精细刻画人类活动痕迹。数据集包含经过正射校正的GeoTIFF格式图像，存储容量达546 TB，文件数量超过10万个，主要服务于可持续发展目标研究，并提供公开访问和下载。