European Geostationary Navigation Overlay Service information
System that enhances the accuracy of GPS receivers
EGNOS
Country/ies of origin
European Union
Operator(s)
EUSPA, ESA
Type
Augmentation
Status
Operational
Coverage
Europe, North Africa
Other details
Cost
€1,1 billion
Website
EGNOS
Map of the EGNOS ground network
The European Geostationary Navigation Overlay Service (EGNOS) is a satellite-based augmentation system (SBAS) developed by the European Space Agency and EUROCONTROL on behalf of the European Commission. Currently, it supplements the GPS by reporting on the reliability and accuracy of their positioning data and sending out corrections. The system will supplement Galileo in a future version.
EGNOS consists of 40 Ranging Integrity Monitoring Stations, 2 Mission Control Centres, 6 Navigation Land Earth Stations, the EGNOS Wide Area Network (EWAN), and 3 geostationary satellites.[1] Ground stations determine the accuracy of the satellite navigation systems data and transfer it to the geostationary satellites; users may freely obtain this data from those satellites using an EGNOS-enabled receiver, or over the Internet. One main use of the system is in aviation.
According to specifications, horizontal position accuracy when using EGNOS-provided corrections should be better than seven metres. In practice, the horizontal position accuracy is at the metre level.
Similar service is provided in North America by the Wide Area Augmentation System (WAAS), in Russia by the System for Differential Corrections and Monitoring (SDCM), and in Asia, by Japan's Multi-functional Satellite Augmentation System (MSAS) and India's GPS-aided GEO augmented navigation (GAGAN).
Galileo and EGNOS budget for the 2021–2027 period is €9 billion[2]
^"EGNOS System". March 2016.
^"EU space policy". www.consilium.europa.eu. Retrieved 2020-12-29.
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