After successful launch of Galileo satellites GSAT0225 (SVID 29) and GSAT0227 (SVID 06) carried on April 28, 2024, the Galileo Satellite Metadata information has been updated for these new comers to the Galileo constellation.

The Galileo Satellite Metadata section, which can be found under the Support to Developers tab, contains information on satellite properties. This information is necessary in order to properly implement advanced processing algorithms for precise orbit determination or Precise Point Positioning (PPP). This includes physical characteristics, the attitude law and antenna parameters.

The following Galileo satellite metadata information has been added for GSAT0225 and GSAT0227:
    • Mass and Centre of Mass (COM);
    • Antenna Reference Point (ARP);
    • Phase Centre Offsets (PCO) for E1, E5a, E6, E5b and E5 signals; and
    • Laser Retro Reflector Location.

Figure 1: Updated satellite metadata information for GSAT 0225 and GSAT 0227

In addition, the ANTEX file has been updated to include Phase Centre Variation (PCV) figures for GSAT0225 and GSAT0227. The process to generate the new ANTEX file takes several months since it requires performing complex measurements, as well as thorough post-processing and validation of the obtained data. The updated ANTEX file can be found here.

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