ULA isn't making the Space Force's GPS interference problem any easier
Ars Technica
by
Stephen Clark
February 26, 2026
AI-Generated Deep Dive Summary
The U.S. Space Force is facing challenges with GPS interference caused by United Launch Alliance (ULA)'s Vulcan rocket. An investigation into a booster anomaly from a recent launch is expected to span several months, raising concerns about the impact on the GPS constellation. This issue comes at a time when the Space Force is focused on maintaining and modernizing its fleet of 31 operational GPS satellites, which provide critical positioning, navigation, and timing services worldwide.
GPS satellites are essential for a wide range of applications, from civilian uses like smartphones and airline navigation to military operations and precision agriculture. The system requires at least 24 satellites for global coverage, with additional satellites serving as backups or for enhanced accuracy. The Space Force regularly launches new GPS satellites to replace aging ones, ensuring the constellation remains robust and reliable.
ULA's Vulcan rocket has been a key player in launching these satellites, but recent issues have cast doubt on its reliability. The booster anomaly reported after a launch has raised concerns about potential interference with GPS operations. As the investigation continues, the Space Force must balance addressing this issue with maintaining the critical functionality of the GPS network.
The outcome of this investigation will not only determine ULA's role in future missions but also impact public trust in space systems. With GPS technology deeply integrated into modern life and industries, ensuring its uninterrupted
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Originally published on Ars Technica on 2/26/2026