Tests suggest Russian satellites can jam GPS on a continental scale
摘要
一项研究指出，俄罗斯卫星是欧洲多地出现短暂GPS信号干扰的原因。这种来自太空的人为干扰可在数秒内被从挪威到西班牙、波兰乃至格陵兰和加拿大的地面站同时检测到。分析2019年1月至2026年4月的数据发现，有75天至少发生一次大范围干扰事件，影响GPS及其他全球导航卫星系统使用的L1频段。目前尚不确定这些干扰是否蓄意，以及未来是否会被用作覆盖大陆范围的GPS干扰
Russian satellites have been identified as the cause of mysterious, seconds-long bursts of GPS interference across Europe—a rare example of human-made GPS interference coming from space. But uncertainty still hangs over whether such interference is intentional and if it could be more powerfully weaponized as GPS jamming with continental reach in the future.
The discovery came from an investigation detailed in a June 2 preprint paper by Todd Humphreys and his student Zach Clements at The University of Texas at Austin, along with Argyris Krizise at Stanford University in California. By sifting through public data from ground-based stations with global navigation satellite system (GNSS) receivers, they identified a pattern of high-powered interference lasting less than 10 seconds each time but simultaneously detectable by ground stations across Europe from Norway to Spain to Poland, and even reaching as far west as Greenland and Canada.
By analyzing the ground station data from January 2019 to April 2026, the researchers found 75 days with at least one widespread GNSS interference event overlapping with the GPS L1 frequency band centered on 1575.42 megahertz. That represents the main band used for signal transmission by the US-made GPS satellite constellation and GNSS constellations from other countries.
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