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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
.
External link
ESA information on EGNOS
(
http://www.esa.int/export/esaSA/GGG63950NDC_navigation_0
)
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