European geostationary navigation overlay system
The
European geostationary navigation overlay system (EGNOS) is a
satellite navigation system under development by the
European Space Agency, the
European Commission and
EUROCONTROL. It is intended to supplement the
GPS and
GLONASS systems by reporting on the reliability and accuracy of the signals, allowing position to be determined to within 2 metres. It will consist of three geostationary satellites and a network of ground stations and is intended to be operational in 2004. It is planned as a precursor to the
Galileo positioning system.
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