Tests suggest Russian satellites can jam GPS on a continental scale
Summary
Researchers found that Russian satellites caused brief GPS signal disruptions across Europe and nearby regions. They used ground data and signal timing to identify one satellite, Kosmos 2546, as a source, but the reason for the interference remains unclear.Key Facts
- Short bursts of GPS interference happened across Europe and reached areas as far as Greenland and Canada.
- The interference affected the main GPS signal frequency used worldwide.
- It mostly occurred on weekdays during business hours in Europe.
- The interference source had to be at least 1,200 kilometers above Earth.
- Researchers matched the interference to the Russian satellite Kosmos 2546 in the EKS constellation.
- These satellites orbit in paths called Molniya orbits, covering high northern latitudes for missile launch warnings.
- The team analyzed data from January 2019 to April 2026 and found 75 days with interference.
- The exact reason for the GPS jamming by the satellites is still unknown.
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