OCX On Track, Says Raytheon; Begins New Upgrade - Breaking Defense
GPS OCX system: A new technology discovers what it is and its benefits
GPS OCX passes review
Raytheon's New GPS OCX (Operational Control System) to Enable Era of Next-Gen Satellites - News
GPS Next-Generation Operational Control System | Raytheon Intelligence & Space
Kendall Says Recompeting OCX is a Possibility - SpaceNews
Air Force's First GPS III Satellite Receives Commands from OCX Ground Control Segment - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design
GPS Backups/ Alternatives Too Hard & Costly? - GPS OCX delayed again, now at $6.1B - RNTF