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									   U.S. Space-Based Positioning,
   Navigation, and Timing Policy
        and Program Update
     The Third Annual European Defence
 Geospatial Intelligence Conference (DGI 2007)
                       London
                 24 January 2007


              Robert Crane, Senior Advisor
        U.S. National Coordination Office for
Space-Based Positioning, Navigation, and Timing (PNT)
               Overview


• Current Constellation & Performance
• Modernization Plans
• International Cooperation
• U.S. Space-Based PNT Policy
• Summary


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                       Current Constellation

            30 Operational Satellites
               (Baseline Constellation: 24)

• 15 Block II/IIA satellites operational
• 12 Block IIR satellites operational
   – Modernizing 6 remaining Block IIR satellites
• 3 Block IIR-M satellites operational
   – Transmitting new second civil signal (L2C)
• Continuously assessing constellation health to
  determine launch need
   – New IIR-M satellite launched – Nov 06
   – Next launch: Summer 2007
• Global GPS civil service performance
  commitment met continuously since 1993
• System Performance Far Exceeds Current Standard
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                                                   U.S. Monitoring Sites



Alaska
                                                               United
                         St. Louis, MO                         Kingdom
              Colorado
               Springs
                                            USNO
                                                                                                                                   Korea
Hawaii                                   Cape Canaveral
                   Austin, TX
                                                                                              Bahrain
                                                                                                                                             Kwajalein



                           Ecuador

                                                                    Ascension                           Diego Garcia

     Tahiti
                                                                                   South Africa
                                                   Argentina                                                           Australia

                                                                                                                                           New Zealand
                                                                                    GPS Monitor Stations
                                                                                NGA Site (11) (8 on-line with MCS)
                                                                                       NGA Test Site (2)
                                                                                        USAF Site (6)




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                                                                 24 January 2007
          Benefits of GPS Modernization

• System-wide service improvements in:
  – Accuracy
  – Availability
  – Integrity
  – Reliability
• Backward compatibility
• Robustness against interference
• Improved indoor, mobile and urban use
• Interoperability with other GNSS constellations

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                     24 January 2007
                                  GPS III

• Next-generation satellite bus needed to
  accommodate increasing power requirements
• Revised acquisition strategy:
   – Development approach to reduce risk, increase flexibility
   – Separate contracts for space and ground segments

• Civil benefits:
   – Provides operational capability for L2C and L5
       • In combination with GPS IIR-M and IIF satellites
   – Delivers L1C for interoperability with Galileo, QZSS
   – Significant increase in system accuracy
   – Improved availability of accuracy with integrity
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                                24 January 2007
            U.S. International Cooperation


• Formal cooperative arrangements with
  Europe, Russia and Japan, since 1996
   – To ensure compatibility (non-interference) and
     interoperability with foreign systems
   – To maintain and promote a level playing field in
     the global market
• Ongoing efforts with Australia, India, Brazil
  and others
• Multilateral cooperation established
  through International Committee on GNSS
   – As well as ICAO, IMO, and NATO




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                                24 January 2007
                       U.S. Policy

• First “U.S. GPS Policy” – 1996
• U.S. Space-Based Positioning, Navigation and
  Timing Policy
  – Signed on December 8, 2004
  – emerging national and international markets for GPS
    and related applications
  – dependence and reliance on space-based PNT
    services
  – a global utility

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                         24 January 2007
       2004 U.S. Space-Based PNT Policy



• Updates USG position while retaining principles of
  previous policy
• Provides framework for decision makers
• Improves ability to coordinate efforts across the various
  agencies of the USG
• Facilitates dialogue among stakeholders
• Promotes common standards




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                           24 January 2007
          2004 U.S. Space-Based PNT
               Policy Summary

Renews USG commitment for —
  – Uninterrupted availability of PNT services
  – Continuous improvement of civil and military
    performance of space-based PNT
  – Interference resistance and denial of hostile use of
    service
  – Providing world class service, free of direct user fees
  – Compatibility and Interoperability with international
    systems


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                          24 January 2007
              National Space-Based
              PNT Executive Committee
• National Space-Based PNT Executive Committee
  established in 2004 U.S. Policy
  – Chaired by Deputy Secretaries of Defense and
    Transportation
  – Membership includes: State, Commerce, Homeland
    Security, JCS and NASA
  – Executive Committee met four times in 2006
     • Next meeting Spring 2007

  – Supported by a new National Coordination Office
• National Coordination Office (NCO) was
  established with staff from each member agency
                                  and
  – Director, Deputy Director,Europe 6 staff
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                           24 January 2007
         Key Executive Committee Actions

• 5-Year National Space-Based PNT Plan
  – Plan is in draft and FY08 program assessment is in
    progress
• Interference Detection and Mitigation
  – Department of Homeland Security coordinating U.S.
    capabilities to detect and mitigate sources of interference
    to GPS and its augmentations
• National Space-Based PNT Architecture
  – Led by DoD’s National Security Space Office and DOT’s
    Research and Innovative Technology Administration

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                          24 January 2007
        Key Executive Committee Actions
                        (continued)




• U.S. Space-Based PNT Advisory Board
  – Conduct assessments and make recommendations to
    accomplish policy goals and objectives
  – Membership being finalized
  – Meets Spring 2007
• Outreach




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                         24 January 2007
www.PNT.gov           www.GPS.gov




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          24 January 2007
                          Summary

• Implementing U.S. National Space-Based PNT Policy
  – Coordination Office activated on 1 Nov 05
  – Executive Committee meeting regularly
• U.S. policy encourages and promotes worldwide use
  of civil GPS and augmentations
  – Compatibility and Interoperability with other GNSS systems
• International coordination and cooperation is a U.S.
  priority
  – Strongly support International Committee on GNSS
• GPS performance is getting better and will continue
  to improve
  – Augmentations enable high performance today
  – First new GPS signal now available
  – Continuous improvements 2007 Europe
                           DGI                                   15
                              24 January 2007
               Contact Information

                Michael E. Shaw, Director
                 Michael.Shaw@PNT.gov
        Colonel Dan Jordan, USAF, Deputy Director
                  Dan.Jordan@PNT.gov
               Robert Crane, Senior Advisor
                 Robert.Crane@PNT.gov

     National Coordination Office for Space-Based PNT
      Herbert C. Hoover Commerce Building, Room 6822
                1401 Constitution Avenue, N.W.
                   Washington, D.C. 20230
                   Phone: (202) 482-5809
                      Fax: (202) 482-4429


www.PNT.gov                                   www.GPS.gov
                        DGI 2007 Europe                 16
                        24 January 2007

								
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