Pentagon leaders believe that estimate is conservative, leading the U.S. Space Force to kick off a new roughly $2 billion satellite program to build a backup GPS.

The mission is AFRL's first major PNT demonstration since 1977, when it launched NTS-2 — a satellite that helped shaped the modern GPS constellation.

“GPS technology and operational performance continue to set the standard for GNSS, but necessary modernization is late to need, and becoming later by the day. This reflects what I see as loss of focus ...

Sierra Space’s Resilient GPS (R-GPS) satellite program reached a key milestone with the successful completion of Systems Requirements Review, the company announced on January 16, 2025.

Called R-GPS for short, the program is intended to provide an alternative, backup network for the current satellite system.