Choosing the right file depends on your processing timeline and accuracy needs: Copernicus Data Space Ecosystem
For high-precision Synthetic Aperture Radar (SAR) processing, such as interferometry (InSAR), downloading the correct Sentinel-1 precise orbit files is a non-negotiable step. These files, known as , provide highly accurate satellite position and velocity data that far exceed the precision of the initial metadata provided with the raw imagery. 1. Where to Download Sentinel-1 Orbit Files sentinel-1 precise orbit download
Use the Copernicus Data Space Ecosystem Browser or its associated OData API to search for "Auxiliary Data Files". Choosing the right file depends on your processing
Some older workflows still point to the ESA STEP Auxiliary Data index. 2. Understanding POE vs. RES Orbits Where to Download Sentinel-1 Orbit Files Use the
The NASA Alaska Satellite Facility (ASF) DAAC provides a robust mirror through their Sentinel-1 Orbit Search and public S3 buckets .