Russian Satellites Suspected of GPS Jamming Across Europe
Research led by Todd Humphreys from the University of Texas at Austin has identified Russian satellites as the source of mysterious GPS interference across Europe. The interference, characterized by seconds-long bursts, was detected by ground-based stations with global navigation satellite system (GNSS) receivers. The study, which analyzed data from January 2019 to April 2026, found 75 days with at least one interference event affecting the GPS L1 frequency band. These events were mostly observed during business hours on weekdays, suggesting a pattern. The interference was detectable across Europe and even reached Greenland and Canada, indicating a source at least 1,200 kilometers above Earth. The researchers narrowed down the potential satellites responsible but could not confirm the exact source due to the lack of raw radio signal data. 
