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  • Geosynchronous Space Situational Awareness Program (GSSAP) Satellite

    Mission/Vision GSSAP satellites will be a space-based capability operating in the near-geosynchronous orbit regime supporting U.S. Strategic Command space surveillance operations as a dedicated Space Surveillance Network (SSN) sensor.GSSAP satellites will support Joint Functional Component Command for Space (JFCC SPACE) tasking to collect space
  • Ground Based – Global Positioning Ssystem Receiver Application Module

    MissionThe Ground Based - GPS Receiver Application Module (GB-GRAM) is intended to provide a low-cost, standardized "embeddable" GPS product solution utilizing the Joint Chiefs of Staff mandated Selective Availability Anti-Spoofing Module (SAASM) security architecture. The SAASM technology provides enhanced protection for United States and Allied
  • Global Broadcast Service (GBS) Joint Program

    MissionProvide a one-way, high-speed flow of near-real-time wideband information to forces garrisoned or deployed.BackgroundBeginning in 1998, GBS broadcasts via communication payloads on two UFO Ka-Band augmented satellites, four Commercial Satellites (Ku Band), and all WGS satellites (Ka- and X-Band). GBS Satellite Broadcast Manager (SBM) Sites
  • Global Positioning Systems Directorate

    The Global Positioning Systems Directorate is a joint service effort directed by the United States Air Force and managed at the Space and Missile Systems Center, Air Force Space Command, Los Angeles Air Force Base, Calif. The directorate is the Department of Defense acquisition office for developing and producing Global Positioning System (GPS)
  • GPS Public Interface Control Documents

    OverviewGPS consists of three segments; the Space Segment, Control Segment, and User Segment, commonly known as User Equipment. The communication boundaries that exist between the GPS and other systems, as well as within the GPS itself, are known as interfaces.Interface Control Documents Interfaces are documented in Interface Control Documents.
  • GPS Advanced Control Segment

    MISSIONOCX represents the command and control portion of the next generation GPS. OCX will enable launch, orbit insertion, checkout, anomaly resolution and ultimately disposal of GPS IIIA and subsequent satellites as well as control legacy satellites. OCX will provide higher accuracy, integrity and availability of the system through the combination
  • GPS Operational Control Segment

    MISSIONThe Operational Control Segment provides Command and Control (C2) and Launch/Early Orbit, Anomaly, Resolution and Disposal Operations (LADO) capabilities for the Block II satellites. OCS also enables Selective Availability/Anti-Spoof Module (SAASM) capability in GPS User Equipment, as well as contingency recovery operations, over-the-air key
  • GPS IIF

    MISSIONDeliver sustained, reliable GPS capabilities to America's warfighters, our allies and civil users. GPS provides positioning, navigation and timing service to civil and military users worldwide. BACKGROUNDIn 1996, the GPS IIF contract was awarded to The Boeing Company for the development and production of 33 space vehicles. In 2000, the Air
  • GPS IIR/IIR-M

    MISSIONDeliver sustained, reliable GPS capabilities to America's warfighters, our allies and civil users. GPS provides positioning, navigation and timing service to civil and military users worldwide. BACKGROUNDIn 1989, the GPS IIR contract was awarded to Lockheed Martin for the development and production of 21 space vehicles. In August 2000, the
  • GPS III

    MISSIONDeliver sustained, reliable GPS capabilities to America's warfighters, our allies and civil users. GPS provides positioning, navigation and timing service to civil and military users worldwide. BACKGROUNDIn May 2008, the first GPS III increment contract was awarded to Lockheed Martin for the development and production of two initial space
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