GPS ground system gets cybersecurity upgrade as OCX faces new schedule setback - SpaceNews
GPS.gov: Next Generation Operational Control System (OCX)
Exelis Delivers Encryptors for GPS OCX
Air Force calls Raytheon's GPS control station 'a disaster' - Defense Systems
Countdown to next-gen GPS - Six things to know about the new GPS III satellite | Raytheon
Raytheon I&S wins GPS OCX contract - Intelligence Community News
Raytheon's New GPS OCX (Operational Control System) to Enable Era of Next-Gen Satellites - News
Benefits coming from GPS III constellation - GPS World
GPS III Launch Will Provide Global M-Code - Breaking Defense
Global Positioning System: Updated Schedule Assessment Could Help Decision Makers Address Likely Delays Related to New Ground Control System | U.S. GAO
Raytheon's GPS OCX enters final development phase - Airforce Technology
GPS Next-Generation Operational Control System | Raytheon Intelligence & Space