GMV develops key capabilities for the future EGNOS system

GMV has been awarded the DFAS-TB contract (EGNOS System Test-Bed: Dual Frequency Augmentation System Test Bed, HE-ESA-009), one of three parallel projects launched by the European Space Agency (ESA) to develop the Algorithmic Functions (AFs) of a testbed for the SBAS DFMC (Dual Frequency Multi-Constellation) system.

The project, which began in September 2025 and is expected to last two years, is part of the evolution of the European EGNOS system towards its V3 version, as well as future developments. This new testbed will enable the update and adjustment of the algorithms, including extended RIMS processing, GEO ranging, and additional services, that ensure the accuracy and integrity of satellite navigation signals.

SBAS (Satellite-Based Augmentation Systems) complement GNSS constellations (such as GPS or Galileo) through geostationary satellites and ground stations that correct signal errors and provide reliability alerts. In parallel, the ARAIM technique (Advanced Receiver Autonomous Integrity Monitoring) expands this concept from the user's own receiver, combining multiple constellations and frequencies to enhance signal integrity and availability. Both concepts are being combined in the evolution of EGNOS and in the development of systems such as DFAS-TB, which aim to increase the availability and safety of satellite navigation services in Europe.

For the initial phase of the DFAS-TB project, GMV will use its magicSBAS^® solution, which enables a rapid and functional deployment of the testbed for the generation and validation of SBAS messages.

With a proven track record in navigation algorithms and SBAS testbeds, GMV has led similar developments in Europe and beyond, achieving LPV-200 accuracy levels and demonstrating the maturity of its DFMC capabilities in sectors such as aviation, maritime, automotive, and rail.