GNSS Spoofing Detection & Alerting Service

GPS/GNSS spoofing has moved from a military curiosity to a daily operational reality for airlines: by 2024 a typical day saw hundreds of jamming and spoofing incidents, with regular events across Eastern Europe, the Middle East and Asia. Unlike jamming, which simply overpowers weak satellite signals, spoofing feeds deceptive data to the receiver so navigation systems report good integrity while computing a false position — with documented impacts on RNAV/RNP navigation, eGPWS/TAWS, ADS-B, FMS/GPIRS, autopilot and AHRS, ELT and weather radar, including avionics that cannot be reset in flight. Spirent's GNSS Spoofing Detection & Alerting Service was created to protect civil aviation from this threat without any change to the aircraft.

Built as an extension of Spirent's GNSS Digital Twin cloud services, it delivers real-time warnings and alerts through the Electronic Flight Bags, apps and tablets crews already use on the flight deck. Flight crews receive warnings that their aircraft is being jammed or spoofed — including severity, threat type and the false ADS-B position the aircraft is reporting — plus alerts of active interference along the active flight path with detailed area boundaries, risk level, number of aircraft affected, attack duration and last-known-good position; warnings can arrive faster than the avionics themselves detect the attack. Airline operations and maintenance teams see which flights and routes are impacted in real time and historically, with impact broken down by tail number, flight number, aircraft type and phase of flight to inform maintenance, training, fatigue and SOP decisions.

ATC and ANSPs receive area-level alerts covering affected routes, NAVAIDs, approaches and airport systems (ground surveillance, runway alerting), potential jammer/spoofer source locations, and integration paths into radar, NOTAM and LANCE workflows. The service also detects aircraft with residual navigation degradation after exiting an interference area. For GCC airlines, airports and ANSPs operating alongside some of the world's most active interference corridors, it provides the pre-flight and in-flight situational awareness needed to safeguard systems, avoid affected airspace and recover normal operations quickly.