AWS Public Sector Blog
Keeping a SpatioTemporal Asset Catalog (STAC) Up To Date with SNS/SQS
The SpatioTemporal Asset Catalog (STAC) specification aims to standardize the way geospatial assets are exposed online and queried. The China-Brazil Earth Resources Satellites (CBERS) are the result of a cooperation agreement between Brazilian and Chinese space agencies (INPE and CAST, respectively), which started in 1988. Since then, five satellites were launched (CBERS-1/2/2A/3/4). The mission generates images from Earth with characteristics similar to USGS’ Landsat and ESA’s Sentinel-2 missions. In 2004, INPE announced that all CBERS-2 images would be available at no charge to the public. It was the first time this distribution model was used for medium-resolution satellite imagery. Now, this model is used for all CBERS satellite images.