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'It's quite a bit more than we expected': Satellite reveals immense scale of GPS signal tampering

For the first time, an experimental satellite has mapped the scale of GPS jamming across Europe and the Middle East from ...
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Sierra Space completes ground demo of navigation satellite for U.S. Space Force program

WASHINGTON — Sierra Space announced May 8 it has completed a ground-based demonstration of a navigation satellite prototype for the U.S. Space Force’s Resilient Global Positioning System (R-GPS) ...