Scientists and U.S. military briefers report that short, widespread disruptions to GPS signals across Europe have been linked to Russian satellite systems, according to multiple outlets citing recent research. The interference events are described as brief—often lasting seconds—and detectable across large geographic areas using ground-based GNSS/GPS receivers. A study described by Ars Technica and others traces patterns in public station data to high-powered interference affecting GPS L1-band signals (centered around 1575.42 MHz), which is used by the U.S. GPS constellation and other GNSS systems. The researchers say the timing and geographic reach of the bursts—observed from countries across Europe and reportedly beyond—indicate the source is high above Earth, consistent with a space-based emitter. The work also identifies frequent occurrences during the weekday work period in Europe. While the reports generally frame the findings as tests or demonstrations of jamming capability amid heightened geopolitical tensions, they do not uniformly conclude intent. Some experts say the data suggest intentional or at least deliberate interference placed near GNSS signals, while others note uncertainty about whether it is being used as an electronic warfare weapon or for other purposes.