We are the EGNOS Service Provider

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EGNOS (European Geostationary Navigation Overlay Service) is Europe's first concrete venture into satellite navigation. EGNOS uses 2 geostationary satellites, a network of 39 ground stations and 2 mission control centers.

The ground stations gather data on the current accuracy of GPS signals (and  Galileo signals in the next version) and embed it in the EGNOS signal, which is uplinked to the satellites to be transmitted to users.

EGNOS makes existing satellite navigation signals suitable for safety critical applications such as flying aircraft or navigating ships through narrow channels. EGNOS was certified for civil aviation in 2011.

EGNOS increases the accuracy of existing satellite positioning signals while providing a crucial ‘integrity message', informing users in the event of signal problems. It also transmits an extremely accurate universal time signal.

EGNOS is designed against international standards set by the International Civil Aviation Organisation (ICAO) and its development was coordinated with other satellite-based augmentation systems around the world: MSAS in Japan, WAAS in the US, and GAGAN in India.

In 2013, ESSP (European Satellite Services Provider) was awarded a contract by the European GNSS Agency (GSA) to act as the single EGNOS Service Provider for the period 2014 to end of 2021.

During that period, ESSP is in charge of the operations of the ground and space segments, of the overall maintenance of the infrastructure and the compliance with safety standards.

ESSP also takes care of the EGNOS users through 3 dedicated, tailored services:

The Open Service, for applications where human life is not at stake, such as personal navigation, goods tracking and precision farming (available since October 2009).

The Safety-of-Life Service, where human lives depend on the accuracy and integrity of the signals, became available for its primary purpose of aircraft navigation (beginning with vertical guidance for landing approaches) in March 2011; the LPV-200 service was declared operational on Sept 29, 2015.

EDAS (EGNOS Data Access Service) which offers internet (IP) access to EGNOS data. EDAS is the single point of access for the data collected and generated by the EGNOS infrastructure. The main types of data provided by EDAS are:

  • Raw GPS, GLONASS and EGNOS GEO observations and navigation data collected by the entire network of Ranging and Integrity Monitoring Stations (RIMS) and Navigation Land Earth Stations (NLES)
  • EGNOS augmentation messages, as normally received by users via the EGNOS Geostationary satellites

For more information about EGNOS, go to the EGNOS portal : , the GSA Web Site :  or the EGNOS User Support Web site :