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GLOBAL POSITIONING SYSTEM (GPS) CONSTELLATION STATUS December 1999. Captain Zannis Pappas HQ Air Force Space Command (DORS). Overview. GPS Constellation Health/Status Launch Schedule Current Transition Plan Summary. 27 Operational Satellites On Orbit. Constellation Health/Status. SLOT.
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GLOBAL POSITIONING SYSTEM (GPS) CONSTELLATION STATUS December 1999 Captain Zannis Pappas HQ Air Force Space Command (DORS)
Overview • GPS Constellation Health/Status • Launch Schedule • Current Transition Plan • Summary
27 Operational Satellites On Orbit Constellation Health/Status SLOT 1 2 3 4 5 SVN38 A SVN39 SVN25 SVN27 SVN19 B SVN22 SVN30 SVN13 SVN35 C SVN36 SVN28 SVN33 SVN31 SVN37 End of Life PLANE IIR-3 SVN24 SVN46 SVN17 SVN34 SVN15 D E SVN14 SVN21 SVN40 SVN23 SVN16 IIR-2 SVN32 SVN26 SVN18 SVN29 SVN43 F
Launch Schedule • SCHEDULED GPS LAUNCHES FY 99 - FY 05: Block IIR Block IIF FY 00: 3 0 FY 01: 3 0 FY 02: 3 0 FY 03: 4 0 FY 04: 3 0 FY 05: 2 1
Current Transition Plan • Lockheed Martin Mission Systems (LMMS) • Upgrade Dedicated Monitor Stations and Ground Antennas with New Digital Receivers and Computers • Replace Existing Master Control Station Mainframe Computer With a Distributed Architecture • Add Accuracy Improvement Initiative, Air Force Satellite Control Network, and Full IIR Capabilities • Build Fully Mission Capable Alternate Master Control Station (AMCS) at Vandenberg Tracking Station • Boeing North America (BNA) • Add IIF Command and Control Functionality 2-Step Plan: Replace Existing Mainframe With Distributed Architecture Then Add Block IIF Functionality
Summary • GPS is a Healthy Constellation - 27 Operational Satellites - Navigation Payloads Operating Great • Block IIR - SVN43 Bus and Navigation Payload Nominal - Solid Navigation Performance - 18 more pending Block IIR launches scheduled • Block IIF - Air Force has committed to purchase 6 Block IIF satellites for now, with an option (on a case by case annual basis) to procure a total of 30