CHAS NEWKEY-BURDEN
Estonia has accused Russia of jamming GPS navigation devices in the airspace above the Baltic states, raising fears of potential aircraft disasters.
The incidents were part of an "ongoing pattern" of GPS interference in Europe, said New Scientist, but there are question marks over who is to blame and whether it is deliberate.
The Global Positioning System (GPS) is a network of satellites and other devices that are pivotal for aviation safety. But its signals are "vulnerable to blocking or distortion, creating problems for pilots and air traffic control dispatchers", said The Times.
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