ESA's GNSS Observation Network (EGON)

The GNSS data that the Navigation Support Office processes is provided by stations within ESA’s global network of satellite tracking stations, ESTRACK, and its affiliated partner stations.

The ground stations provide the link between ESA’s satellites in orbit, and the operations control centre on the ground. All stations provide multi-GNSS data and a Real Time stream.


The GNSS stations operated by the ESOC Navigation Support Office (OPS-GN) are:

Former stations

  • Malindi, Kenia (MALI) ; Operated 1997-2008 (decommissioned)

  • Perth, Australia (PERT) ; Operated 1993-2012 (taken over by Geosciences Australia)

  • Kourou, French Guyana (KOU1) ; Operated 2002-2006 (decommissioned)