SeRo Systems, a German leader in air traffic surveillance and monitoring solutions, has introduced its innovative GNSS radio frequency interference (RFI) situation display (GRSD).
This real-time system is designed to detect, identify, and monitor GNSS jamming and spoofing incidents, providing enhanced situational awareness for air navigation service providers (ANSPs) and spectrum regulators.
GRSD integrates live air traffic data with SeRo’s advanced GNSS interference detection capabilities. Utilizing a vertically integrated receiver network and high-precision multilateration (MLAT), a technique used to determine the position of an object by measuring the difference in arrival times of a signal at multiple receivers. The system features a color-coded real-time GNSS interference intensity map, identifying zones experiencing interference and allowing users to assess the operational picture at a glance.
A key innovative feature of GRSD is its AI-supported, short-term, predictive alerting. This forecasts when aircraft will encounter interference, and provides users with time estimates to prepare and respond effectively. In cases of spoofing, GRSD automatically highlights the affected aircraft and displays both the spoofed and correct positions.
A growing threat
Eastern Europe has been in the news of late, with rising geopolitical tensions linked to the ongoing Ukraine conflict. GPS jamming and spoofing incidents have sharply increased, affecting conventional and UAV flights, particularly in the Baltic Sea region, of which Germany’s northern coast forms a part.
According to SeRo Systems, reported incidents of GNSS RFI have increased by 220% since 2021. More than 22,500 flights have been affected by GNSS spoofing in the Baltic countries since December 2023, with that number continuing to rise.
In a recent communication, SeRo Systems CEO Matthias Schäfer highlighted the importance of timely and actionable intelligence; the rise in GNSS RFI means real-time monitoring and mitigation capabilities like those provided by SeRo’s GRSD are now crucial for aviation safety and security.
GRSD works seamlessly alongside SeRo’s real-time air traffic monitoring and analysis platform SecureTrack, providing data for instant decision-making, including historical insights for strategic airspace monitoring, analysis, reporting, and incident investigation.
Headquartered in Frankfurt, Germany, SeRo Systems specializes in technology and engineering solutions. The company designs advanced passive air traffic surveillance sensors and software systems that detect jamming, spoofing, and other anomalies in automatic dependent surveillance-broadcast (ADS-B), GNSS, and spectrum data.






