OCX programme to update GPS axed by Space Force

Control system

The GPS next-generation Operational Control System (OCX) Follow-On (OCX 3F) was intended to update the GPS satellite constellation. Specifically, replacing the current system, known as the Architecture Evolution Plan (AEP), and replacing the Launch, Anomaly and Disposal Operations system.

As part of a GPS Enterprise Modernization effort, the goal was for the satellite-based radio navigation system to provide more accurate positioning, navigation, and timing (PNT) for military and civil users worldwide.

According to USSF, however, OCX was “unable to deliver needed capabilities on an operationally relevant timeline at an acceptable level of risk to meet the GPS constellation modernization needs”.

“It’s important we refine and update acquisition processes to prioritize rapid, incremental capability delivery versus complex ‘all or nothing’ system deliveries,” said Acting Service Acquisition Executive Tom Ainsworth.

“The Department of War has made clear that we need to deliver warfighting capability at a faster rate. We must continue to work with industry to meet the needs of our warfighters as we focus on delivering the right technology on the right timeline to enhance our capabilities and maintain space superiority.”

As of January 2026, OCX costs had risen to $6.27 billion, which includes Raytheon funding to date and other government costs.

“Regrettably, extensive system issues arose during the integrated testing of OCX with the broader GPS enterprise,” said Mission Delta 31 Commander Colonel Stephen Hobbs.

“Despite repeated collaborative approaches by the entire government and contractor team, the challenges of onboarding the system in an operationally relevant timeline proved insurmountable. We discovered problems across a broad range of capability areas that would put current GPS military and civilian capabilities at risk.”

OCX

A number of advances were anticipated for OCX. These included an expanded monitor station network for improved cybersecurity and improved anti-jam capabilities, support of GPS III boosted earth coverage Military code (M-code), and the monitoring of Galileo-compatible and safety of life signals.

Additionally, OCX was to deliver two-times more satellite capacity.

Ironically, however, due to delays with OCX, the Space Force made incremental improvements over the last 10 years to AEP. It says these upgrades indicate that further updates to GPS ground systems will deliver sufficient new capabilities.

See also: US Space Force extends Raytheon contract for OCX GPS capabilities