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What GPS data?

The GPS observations that we provide are in the form of daily 30s files (24h of observations at 30s intervals) in the standard international RINEX format. Further information on the RINEX files.

Apart from the RINEX observation files of the GPS stations, SONEL provides ancillary information which enables a precise analysis of the GPS measurements, in particular :
- the precise orbits of IGS,
- the Earth orientation parameters of IGS.


Evolution of the number of Rinex files available on SONEL (per DOY) since 1991-079






Number of stations whose record length reaches x (years) value.






Cumulative number of stations whose record length is x years or longer.