Safer air traffic with EGNOS - more images

The European Geostationary Navigation Overlay Service (EGNOS) is Europe’s Satellite-based Augmentation System (SBAS). It augments the signals from Global Navigation Satellite Systems (GNSS) to improve their accuracy, integrity and continuity so that they can be used for Safety of Life applications—operations where a malfunction of the system would lead to a major human or environmental catastrophe. EGNOS is used throughout Europe to help guide aeroplane landings in over 500 airports and helipads across 35 countries.

EGNOS provides the information needed to use navigation signals from GPS satellites for safety critical applications. It improves the accuracy of position measurements from a few metres to around one metre, informs users of the errors in the position measurements and warns of disruption to a satellite signal within six seconds.