Galileo demonstrates authenticated positioning

What was announced

EUSPA reported a Galileo demonstration on 16 September using five satellites transmitting encrypted signal components. Receivers combined the Signal Authentication Service concept with OSNMA to obtain authenticated position fixes. Testing included controlled spoofing scenarios at Jammertest in Norway. OSNMA authenticates navigation message data, while SAS addresses ranging authentication. EUSPA described further tests ahead of a planned SAS Initial Service declaration in 2027. The reported event was a demonstration, not an announcement that SAS was already an operational service.

Editorial learning illustration. It is not a system specification or a performance result.

Treat trust as an engineering requirement

A useful design exercise begins with a threat model: what could an attacker control, what evidence can the receiver check, and how should the application respond to uncertainty? Authentication should be evaluated alongside measurement consistency, time handling, sensor integration and failure management. It is also important to separate different claims. Authenticating data is not the same as proving every aspect of a navigation solution is safe. Engineers need explicit assumptions, representative tests and a clear definition of the behaviour expected when trust cannot be established.

Skills to explore

• Receiver signal and navigation-data processing
• Threat modelling and authentication concepts
• Controlled interference testing
• Performance assessment in degraded conditions

These are suggested learning connections, not advertised job openings or claims about the skills required by a particular contractor.

Turn the topic into practical learning

GNSS Academy offers specialised satellite navigation education for engineers worldwide. Explore its training portfolio to find a learning path suited to your background and objectives.