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

Sustainable Development Science Satellite-1 (SDGSAT-1) was successfully launched on November 5, 2021 at the Taiyuan Satellite Launch Center in China. It is the world's first scientific satellite dedicated to serving the United Nations 2030 Agenda for Sustainable Development and also the first Earth science satellite of the Chinese Academy of Sciences. SDGSAT-1 is equipped with three payloads: a high-resolution wide-swath thermal infrared imager, a low-light imager, and a multispectral imager (see Table 1 for their main technical specifications). Through synergistic observations of multiple payloads, it can support the fine depiction of "traces of human activities" and provide data support for the achievement of SDGs that characterize human-nature interactions. Thermal infrared sensor: Image files are saved as one GeoTIFF format image file containing bands B1, B2, and B3 according to the camera; Multispectral sensor: Image files are saved as two GeoTIFF format image files containing bands B1-B7, corresponding to Camera A and Camera B; Low-light sensor: Image files are saved as four GeoTIFF format image files, corresponding to panchromatic PL/PH and RGB composite of each camera. Browse image files are JPG format files output after 16x downsampling of the full-resolution image of the scene, named as *.browse.jpg. Thumbnail files are JPG format files obtained by downsampling the browse images, named as *.thumb.jpg.
SDGSAT-1 data includes Level 1, Level 2, and Level 4 data products. Among them, Level 1 data products are standard products generated from Level 0 products through processes such as relative radiometric correction, band registration, HDR fusion, and RPC; Level 2 products are products obtained after geometric correction based on Level 1 standard products; Level 4 products are products generated by orthorectification using ground control points and digital elevation models based on Level 1 standard products, and output according to 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

该数据集是可持续发展科学卫星1号（SDGSAT-1）的4级标准数据产品，基于1级产品通过正射校正生成，提供热红外、微光和多谱段成像仪的高分辨率GeoTIFF格式数据，用于支持可持续发展目标研究。数据集包含109781个文件，总容量546 TB，可通过指定网址访问和下载。