Russian Satellites Could Jam GPS Across Continents, Tests Show
▼ Summary
– Russian satellites are the source of seconds-long GPS interference across Europe, a rare case of human-made space-based GPS disruption.
– The interference is high-powered, lasts under 10 seconds, and is detectable simultaneously by ground stations from Norway to Spain to Poland, and even in Greenland and Canada.
– Researchers analyzed ground station data from January 2019 to April 2026, finding 75 days with widespread interference overlapping the GPS L1 frequency band.
– The interference patterns occurred mostly on Tuesdays, Wednesdays, and Thursdays during European business hours, and the source was calculated to be at least 1,200 kilometers above Earth.
– It remains uncertain whether the interference is intentional or could be weaponized as more powerful GPS jamming with continental reach in the future.
Russian satellites are now the suspected source of brief but powerful GPS interference bursts sweeping across Europe, according to new research that highlights a potential vulnerability in global navigation systems. These interference events, lasting less than 10 seconds each, have been detected simultaneously by ground stations from Norway to Spain, and as far west as Greenland and Canada, raising concerns about whether this technology could be weaponized for continental-scale GPS jamming.
The findings come from a June 2 preprint paper authored by Todd Humphreys and Zach Clements of The University of Texas at Austin, alongside Argyris Krizise at Stanford University. The team analyzed public data from ground-based stations equipped with global navigation satellite system (GNSS) receivers, uncovering a pattern of high-powered interference that occurred repeatedly between January 2019 and April 2026. Over that period, researchers identified 75 days featuring at least one widespread interference event overlapping with the GPS L1 frequency band centered on 1575.42 megahertz, the primary signal band used by the U. S. GPS constellation and other GNSS networks.
The interference events followed a distinct schedule, Humphreys told the YouTube channel Veritasium, occurring mostly on Tuesdays, Wednesdays, and Thursdays during European business hours. Because the disruption was continental in scale, affecting receivers across Europe and beyond simultaneously, the research team calculated that the source must orbit at least 1,200 kilometers above Earth. By cross-referencing which satellites were above the horizon over the affected region during each event, they narrowed the suspects to a small group of satellites. However, the team could not confirm the exact source because they relied on processed data from GNSS receivers, not the raw radio signals needed for definitive identification.
The mystery remains whether this interference is intentional or accidental, and whether it could be scaled up into a more powerful weapon capable of jamming GPS across entire continents. The findings underscore a growing vulnerability in the global infrastructure that billions of people rely on for navigation, timing, and communication.
(Source: Ars Technica)
