Jan 12, 2026 12:21 PM
Magnav is a next-generation magnetic navigation system, using sensitive magnetometers to detect Earth’s magnetic field, GPS-independent, and jam-resistant.
The US Army could soon navigate without satellites, thanks to magnetic navigation (MagNav) technology funded by the Pentagon’s Defense Innovation Unit (DIU).
MagNav uses magnetometers — highly sensitive instruments that detect subtle variations in Earth’s magnetic field caused by magnetic rocks beneath the surface.
Unlike GPS or China’s Beidou satellite system, the tech is passive, meaning it does not broadcast radio frequency signals that adversaries can detect or jam.
Read the full story on NextGen Defense: US Army Explores GPS-Independent Navigation With ‘Unjammable’ MagNav
US Army•United States•GPS•navigation technology•satellite communication•Defense Innovation Unit•autonomous drone
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