Global Monitoring System for EGNOS (GMS)

The Global Monitoring System (GMS) provides a wide SBAS performance monitoring using the different GPS/GEO data collection networks. The data files are gathered from public domain Europen ftp sites (such as,,, or other sources (such as EGNOS Post Data Provider [epps]), on a daily basis.

The Navigation Solution is computed using the GEO message collected from a SBAS receiver or from data server (such as the epps...). The automatic processing has a latency of 2 days in order to allow the inclusion, under request, of additional data sets collected from some independent sites delivered in a ftp server that would be added to the processing.

Link to Global Monitoring System for EGNOS (GMS)