As part of the deployment of EGNOS System Release 2.4.3 in August 2025, users will see a change in the EGNOS space segment configuration. This upgrade is designed to strengthen the continuity and reliability of the EGNOS services while also preparing the system for future evolutions.
Key Milestones
- 25 August 2025: The GEO-3 satellite Eutelsat 5 West B (PRN 121) transitioned from test to operational status, broadcasting the operational Signal In Space (SiS).
- 5 September 2025: The GEO-2 satellite ASTRA 5-B (PRN 123) will move from operational to test status, broadcasting the test SiS.
This "GEO swap" will see the EGNOS Space Segment composed of GEO-1 and GEO-3 in the operational platform and GEO-2 in the test platform.
The change does not affect service continuity or locations within the EGNOS coverage area.
Arlen Kassighian, Chief Engineering Officer of Eutelsat, said: "Eutelsat is proud of its long-standing collaboration with EUSPA. We are delighted to host this payload, which will continue to significantly enhance the performance of global navigation satellite systems across Europe in the coming years.”
The EGNOS 2.4.3 system release was developed by EUSPA to make the system compatible with the GEO-3 satellite. “It represents an important step towards the upcoming EGNOS V3, which will bring enhanced performance, robustness, and dual-frequency multi-constellation capabilities to European satellite navigation services”, added Jean-Marc Pieplu, Head of EGNOS Exploitation Department.
EUSPA's role
EUSPA is responsible for managing the EGNOS space segment, system upgrades, and service provision. By integrating the new GEO-3 satellite into the operational platform, EUSPA continues to ensure that EGNOS remains a reliable and robust augmentation service for safety-critical and professional applications across Europe.
For further information, please see EGNOS Service Notice #33.