Global Positioning System (GPS) Performance Standards (PS) - PowerPoint PPT Presentation

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Global Positioning System (GPS) Performance Standards (PS)

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Global Positioning System (GPS) Performance Standards (PS) Brig Gen Donald Alston Director of Space and Nuclear Operations DCS, Air, Space & Information – PowerPoint PPT presentation

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Title: Global Positioning System (GPS) Performance Standards (PS)


1
Global Positioning System (GPS) Performance
Standards (PS)
  • Brig Gen Donald Alston
  • Director of Space and Nuclear Operations
  • DCS, Air, Space Information
  • Operations, Plans Requirements
  • 4 October 2007

2
Purpose of a PS
  • Precise Positioning Service (PPS) PS -- published
    Feb 2007
  • Defines current service provided to
    military/authorized users
  • DoD commitments for the PPS SIS
  • What PPS users can count on the PPS SIS to
    provide
  • Basis for military GPS safety certifications
  • Example Certifying PPS for use in safety of life
    applications
  • Standard Positioning Service (SPS) PS --
    published Oct 2001
  • Defines service provided to non-military GPS
    users
  • Defines current DoD commitments for the SPS SIS
  • What SPS users can count on the SPS SIS to
    provide
  • SPS PS is basis for all civil GPS safety
    certifications
  • Example SPS use in IFR navigation by civil
    aviation

3
SPS PS Update Process
PPS PS Published
NPEC Tracks Task
AF/A3S Tasking
Feb 07
Draft SPS PS from AFSPC
Mar 07
Apr 07
Air Staff Review
Jul 07
NII Review
Now
SPS PS Published
Early 08
30 Apr 08
4
Line of Demarcation
SPACE SEGMENT
SPS SIS INTERFACE
USER SEGMENT
CONTROL SEGMENT
5
Summary
  • Final Document expected in May 2008
  • SPS PS will be a significant step forward
  • Evolution of GPS performance
  • At the SIS interface that users plug into
  • Independent of receiver assumptions

When published, get it from the
Web http//pnt.gov/
2008
6
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