Mystery GPS outages traced to Russian satellite

Occasional bursts of energy from a Russian missile-detection satellite have been briefly disrupting satellite navigation across large parts of Europe, a pattern that may indicate a “qualitative escalation in GNSS [global navigation satellite system] interference.” At least 75 times between 2019 and 2026, University of Texas researchers observed 10-second bursts of high-powered radio signals at 1558.5 MHz: the frequency used by GPS and European navigation satellites to transmit s