Space and Missile Systems CenterSpaceand Missile Systems …web.stanford.edu/group/scpnt/pnt/PNT15/2015_Presentation... · 2015. 11. 25. · &India - IRNSS Civil Cooperation • 1+

Space and Missile Systems CenterSpace and Missile Systems Center

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Space and Missile Systems Center

S P A C E A N D M I S S I L E S Y S T E M S C E N T E RS P A C E A N D M I S S I L E S Y S T E M S C E N T E R

Global Positioning Systems Directorate

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S P A C E A N D M I S S I L E S Y S T E M S C E N T E R

GPS Enterprise View

Department of Transportation• Federal Aviation AdministrationDepartment of Homeland Security• U.S. Coast Guard

Department of Defense• Services (Army, Navy, AF, USMC)• Agencies (NGA & DISA)• US Naval Observatory• PNT EXCOMS• GPS Partnership Council

International Cooperation• 56 Authorized Allied Users

& 25+ Years of Cooperation• GNSS

& Europe - Galileo& China - Beidou& Russia - GLONASS& Japan - QZSS& India - IRNSS

Civil Cooperation• 1+ Billion civil &

commercial users• Search and Rescue• Civil Signals

& L1 C/A (Original Signal)& L2C (2nd Civil Signal)& L5 (Safety of Life)& L1C (International)

Spectrum• World Radio Conference• International

Telecommunication Union• Bilateral Agreements

Maintenance/Security• All Level I and Level II

& Worldwide Infrastructure& NATO Repair Facility

• Develop & Publish ICDs Semi-Annually& ICWG: Worldwide Involvement

• Update GPS.gov Webpage• Load Operational Software on

over 970,000 SAASM Receivers• Distribute PRNs for the World

& 120 for US and 90 for GNSS

40 Satellites / 30 Set HealthyBaseline Constellation: 24 Satellites

Satellite Block Quantity Average Age OldestGPS IIA 1 24.9 24.9GPS IIR 12 13.8 18.3GPS IIR-M 7 8.3 10.1GPS IIF 10 2.1 5.4Constellation 30 9.0 24.9

AS OF 3 NOV 15


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Space Segment

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Cool Videos


Most aggressive GPS launch schedule since 1993

• 11 total GPS IIFs on-orbit-- Mission IIF-11 launched from Cape on 31 Oct 15

• 1 more GPS IIF in the pipeline-- Mission IIF-12 shipped to Cape on 7 Oct 15

GPS IIF

1 Aug 14: IIF-71 Aug 14: IIF-7

15 Jul 15: IIF-1015 Jul 15: IIF-1029 Oct 14: IIF-829 Oct 14: IIF-8

25 Mar 15: IIF-925 Mar 15: IIF-920 Feb 14: IIF-520 Feb 14: IIF-5

16 May 14: IIF-616 May 14: IIF-6

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31 Oct 15: IIF-1131 Oct 15: IIF-11


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Constellation Snapshot

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Accuracy: Civil CommitmentsStandard Positioning Service (SPS) Performance Standard

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Accuracy: Military CommitmentsPrecise Positioning Service (PPS) Performance Standard

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S P A C E A N D M I S S I L E S Y S T E M S C E N T E RS P A C E A N D M I S S I L E S Y S T E M S C E N T E R

Best day/week ever achieved this year!

Current & Historical Statistics

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• CNAV is being broadcast today!• L2C CNAV set Healthy, 18 SVs by the end of the year

• L5 CNAV set Unhealthy, available for test

• Intended to support modernized civil receiver development

Civil Navigation (CNAV)

CNAV message types currently being broadcast��

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• Collaborating on GPS/GNSS Time Offset (GGTO) testplan with Civil community

Documents

Space and Missile Systems CenterSpaceand Missile Systems …web.stanford.edu/group/scpnt/pnt/PNT15/2015_Presentation... · 2015. 11. 25. · &India - IRNSS Civil Cooperation • 1+