GPS

 

GPS jamming: Sweden accuses Russia of being behind a significant rise GPS signal jamming recorded over the Baltic Sea.

Pentagon Doubling Down on Alternatives to GPS That Aren’t in Space

By Shaun Waterman

The U.S. military is doubling down on non-space-based alternatives to GPS, the ubiquitous position, navigation, and timing service provided by the U.S. Space Force, with new funding for the development and testing of operational prototypes of quantum-based devices that don’t depend on easily jammable signals from satellites.