Summary of the input data used for the orbit and clock error for GPS and Galileo
| GPS | Galileo | |
|---|---|---|
| Precise orbit & clock data | Center for Orbit Determination (cod files17) | GeoForschungsZentrum (gbm files17) |
| Clean broadcast Ephemeris data | Stanford University (sulg files18) | Centre national d’études spatiales (brdc files19) |
| Antenna Phase Center Offset files | IGS ANTEX files17 | European GNSS Agency Galileo Satellite Metadata20 |