EGNOS (European Geostationary Navigation Overlay System)

  EGNOS is a joint project of the European Space Agency (ESA), the European Commission (EC) and Eurocontrol, the European Organisation for the Safety of Air Navigation. It is Europe‚Äôs contribution to the first stage of the global navigation satellite system...

WAAS

  WAAS is an update on the military GPS system for civilian airline use developed between The Federal Aviation Administration (FAA) and the Department of Transportation (DOT) of America. Currently, GPS alone does not meet the FAA’s navigation requirements...