Results of Our Six-Month Study on GNSS Interference in the Baltic Sea Region
We are pleased to present the findings of a recent six-month study conducted in collaboration with GPSPatron and Gdynia Maritime University. The study focused on GNSS interference in the Baltic Sea region. This research provides the first comprehensive analysis of ground-level GNSS disruptions in the area and reveals significant discrepancies compared to data derived from ADS-B analyses. Our study underscores the necessity of specialized terrestrial monitoring to accurately assess and mitigate these threats.
Key Findings:
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Persistent GNSS Interference: Over 84 hours of interference were recorded, indicating ongoing disruptions in the region.
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Activity Peak in October: Six major interference events occurred in October alone, totaling 29 hours, suggesting an increase in both frequency and intensity.
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Suspicious Maritime Sources: Signal analysis points to mobile sources, likely advanced jamming technologies deployed by one or more vessels.
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Sophisticated Jamming Signatures: Detected signals exhibit complex modulation and frequency agility, indicative of advanced, possibly military-grade, equipment.
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Detection Limitations: Despite significant ground-level GNSS interference, no corresponding events were logged by ADS-B-based surveillance systems—highlighting their limitations in detecting terrestrial threats.
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Prolonged Interference: Some disruptions lasted over seven hours and had substantial effects on GNSS-reliant maritime navigation and port operations.
We are confident that this comprehensive report will be of great value to your work and research in this field, and will contribute to the improvement of navigation system safety and the resilience of critical infrastructure.
The hardware used in this research project can be found in our GPS section:
https://www.hensec.com/de/produkte/gps/gps-spoofing-und-jamming-detektion
To receive the full, detailed report (50-page PDF), simply send us a short email:
You can also read the report by our partner GPSPatron here:
https://gpspatron.com/gnss-interference-in-the-baltic-sea-a-collaborative-study-by-gpspatron-and-gdynia-maritime-university/