Le projet EGNOS (European Geostationary Navigation Overlay System), qui surveille la performance des systèmes GPS et Glonass existants et en informe les utilisateurs, a continué à bénéficier d'un concours financier RTE-T au cours de la phase critique de la conception, tandis que le banc d'essai ESTB (EGNOS System Test Bed) émet depuis février 2000 un signal spatial EGNOS réel.
EGNOS (European Geostationary Navigation Overlay System), which monitors the performance of the existing GPS and Glonass systems and reports to users on their performance, continued to receive TEN-T support in its critical design phase, while the ESTB (EGNOS System Test Bed) has been providing a real EGNOS space signal since February 2000.