In this section, you may select from many GPS references. If you experience any broken links please report them to our Navigation Information Service.

GPS Policy

• Presidential Policy (2004)
• Presidential Policy on GPS (1996)

GPS General References

• Joint Statement of the International Committee on Global Navigation Satellite Systems (ICG), 8 – 12 December 2008 (PDF)
• GPS SPS Performance Standard 4th Edition September 2008 (PDF)
• Memorandum for GPS Users and GPS Equipment Manufacturers from U.S. Air Force dtd 29 Sep 2006 (PDF)
• 2001 GPS SPS Performance Standard Final (PDF)
• DOT Report Assessing Vulnerability Of Transportation Infrastructure Relying on GPS
  • Volpe Slides - 5 October 2001 Public Outreach Meeting (ppt)
  • OST Slides - 5 October 2001 Public Outreach Meeting (ppt)
• Approved Lexicon of signal Abbreviations
• GPS Acronyms and Abbreviations
• NANU's Abbreviations
• FAA GPS Risk Assessment Study: Risks To GPS Signal Can Be Managed, Independent Assessment Concludes
• GPS Constellation History and Status (Being Updated)
• General Information Archives
• Report on L1C Modernization
  Short version
  Long version

GPS International Cooperation

• International  Maritime Organization Statement on GPS
• United States/Russian Federation Joint Statement (Dec 2004)
• United States/Japan Statement on GPS Cooperation (Nov 2004)\
• Final Report from India-United States Space Conference
• US- EC Agreement on GPS/Galileo Cooperation
• Joint Announcement on United States-Japan GPS Cooperation (Jan 27, 2006)

GPS-related Technical Documents

• Ionosheric Corrections 2002
• Interface Specification (IS-GPS-200D)
• Interface Control Document (ICD 200c)
• NAVSTAR GPS Phase III Interface Control Document (ICD-GPS-060), 2 June 1986
• GPS User Equipment (Phase III) Interface Control Document for the Precise Time and Interval (PTTI) Interface (ICD-GPS-060 Rev B), 12 Feb 2002
• Air Force Space Command Capstone Requirements Document
• GPS Augmentation Study
• GPS User Equipment Introduction - September 1996
• GPS ORD - Appendix F
• RINEX - Receiver Independant Exchange Format - Status & Future
• GPS: Charting the Future

GPS Basics

• Aerospace Corporation Tutorial
• Garmin's - What is GPS?
• National Air and Space Museum
• Trimble's - How GPS Works
• University of Colorado
• US Naval Observatory

Miscellaneous Links

• GPS.gov - Information on GPS, its applications, support, policy and management, and technical information
• NAVSTAR GPS Homepage - information on GPS modernization and GPS III
• National Space-Based Positioning, Navigation, and Timing (PNT) Executive Committee - policy information for GPS
• International GPS Service (IGS) - provides GPS orbits and tracking data
• NGS - National Geodetic Survey - CORS data and information on the GPS Interagency Advisory Council (GIAC)
• US Naval Observatory Timing Ops - GPS timing data
• NASA's list of GPS Applications - an online information source on the diverse uses of GPS technology all over the world.
• FAA GPS Product Team - The latest on WAAS and GPS for aviation use.
• WGS-84

Space and Weather sites

• Solar and Geophysical Activity - Warnings and alerts for current space weather.
• NOAA Space Weather - GPS - A brief description of the effects of space weather on GPS.
• 14th Air Force Space Leonid - information regarding the Leonid meteor shower that occurs every November.
• National Data Buoy Center - stations weather buoys throughout the world