Galileo Achieves First Civil Position Fix Under Spoofing Conditions

• •Galileo satellites achieved a secure position fix under spoofing conditions.
• •The Signal Authentication Service (SAS) enhances trust in GNSS signals.
• •The Jammertest event showcased the resilience of GNSS systems against interference.

On September 16, 2026, five operational Galileo satellites successfully transmitted an encrypted signal for the first civil authenticated position fix under spoofing conditions during the Jammertest event in Andøya, Norway. This test demonstrated the effectiveness of Galileo's Signal Authentication Service (SAS) in countering spoofing attacks, which have become increasingly common against Global Navigation Satellite Systems (GNSS). The SAS, developed by the European Space Agency (ESA), encrypts signal spreading codes to ensure the integrity of the positioning data. The successful test involved various stakeholders from the GNSS value chain, highlighting the importance of resilience against interference. As GNSS systems are critical for numerous applications, including navigation and timing, the ability to authenticate signals is vital for user trust. The event marks a significant advancement in satellite security, particularly in conflict-prone regions where spoofing is prevalent.