GPS Technical Library Document Request
Please complete this form to request copies of GPS technical documents that are not listed below, especially non-public documents. Submit completed form to the NAVCEN Approving Official. The form will be forwarded to the Air Force for review. The Library cannot process your request unless all necessary categories are complete and the request is digitally signed by an AIR FORCE GOVERNMENT APPROVER. Incomplete requests will be returned to the requestor. Standard processing time is 5 business days after receipt of a VALID request.
GPS SPS Performance Standard
- GPS SPS Performance Standard, 5th Edition April 2020 (PDF)
- GPS SPS Performance Standard, 4th Edition, Sep 2008 (PDF)
- GPS SPS Performance Standard, FINAL (uscg.gov) 2001 (PDF)
- GPS SPS Signal Specification, 2nd Edition June 1995 (PDF)
- GPS SPS Signal Specification, 1993 (PDF)
GPS Technical References
GPS Satellite Antenna Panel Patterns
These documents describe the technical characteristics of the antenna panels on the GPS Block IIR and Block IIR-M satellites. The satellite manufacturer, Lockheed Martin, compiled the information based on its design specifications and ground test measurements of the antenna panels. These published antenna patterns and associated Institute of Navigation citation describe both IIR and IIR-M antenna panel versions, their broadcast signal patterns, the performance observed in factory testing, and their on-orbit performance. The posting of this information does not construe, in any manner, an endorsement of any company product or views.
Note: "These patterns represent the current capability of the GPS IIR/IIR-M Space Vehicles. Receiver designers should consult the IS-GPS-200 specifications for use in receiver design and not base design on current signal performance."
The GPS Block IIR and IIR-M Satellites:
- The GPS Block IIR and IIR-M Broadcast L-Band Antenna Panel: Its Pattern and Performance (NAVIGATION Journal of Institute of Navigation paper)
- The GPS Block IIR Antenna Panel Pattern and its Use on Orbit (Navigation Journal of Institute of Navigation Paper)
- GPS-Block-IIR-and-IIR-M-Antenna-Panel-Pattern (Presentation Slides)
- Appendix A -- IIR and IIR-M SV-Specific Antenna Panel Patterns - Plots
- Appendix B -- IIR and IIR-M SV-Specific Antenna Panel Patterns - Data
- Appendix C -- IIR and IIR-M SV-Specific Antenna Panel Patterns - Phase Data
- IIR and IIR-M Antenna Patterns zip file
GPS-III Satellites:
- SVN-74
- SVN-75
- SVN-76
- SVN-77
- Updated GPS-III Antenna Phase Center values for SVN-74 through SVN-78 --- and --- Timing Group Delay and Inter-Signal Correction values as measured at the factory for SVN-78
Antenna Patterns **Note: The primary document below has embedded data files. Adobe Acrobat Pro may give a security error when double-clicking on the embedded "Directivity" and "Phase" data files, but it may be possible to right click the file icon and use "Save Embedded File to Disk" (Those files are also posted below for convenience).
- GPS-III Antenna Patterns for SVN 74 - 78, 05 Oct 2022
- GPS_III_SVN_74_EC_Antenna_Patterns_Directivity_zip
- GPS_III_SVN_74_EC_Antenna_Patterns_Phase_zip
- GPS_III_SVN_75_EC_Antenna_Patterns_Directivity_zip
- GPS_III_SVN_75_EC_Antenna_Patterns_Phase_zip
- GPS_III_SVN_76_EC_Antenna_Patterns_Directivity_zip
- GPS_III_SVN_76_EC_Antenna_Patterns_Phase_zip
- GPS_III_SVN_77_EC_Antenna_Patterns_Directivity_zip
- GPS_III_SVN_77_EC_Antenna_Patterns_Phase_zip
- GPS_III_SVN_78_EC_Antenna_Patterns_Directivity_zip
- GPS_III_SVN_78_EC_Antenna_Patterns_Phase_zip
GPS Interface Control Documents (ICD) and Interface Specifications (IS)
Interface Control Documents (ICDs) and Interface Specifications (ISs) are the formal means of establishing, defining, and controlling GPS program interfaces and for documenting detailed interface design information for the GPS program.
IS-GPS-200 Navstar GPS Space Segment/Navigation User Interfaces
- Interface Specification (IS-GPS-200M, 14 Apr 2021)
- Interface Specification (IS-GPS-200L, 14 May 2020)
- Interface Specification (IS-GPS-200K, 04 Mar 2019)
- Interface Specification (IS-GPS-200J, 25 Apr 2018)
- Interface Specification (IS-GPS-200H, 28 Jul 2016)
- Interface Specification (IS-GPS-200H, 24 Sep 2013)
- Interface Specification (IS-GPS-200G, 05 Sep 2012)
- Interface Specification (IS-GPS-200F, 21 Sep 2011)
- Interface Specification (IS-GPS-200E, 08 Jun 2010)
- Interface Specification (IS-GPS-200D, 07 Dec 2004)
- Interface Control Document (ICD-GPS-200C, 10 October 1993, with IRN 200C 001-004)
IS-GPS-800 Navstar GPS Space Segment/User Segment L1C Interface
- Interface Specification (IS-GPS-800H,13 Apr 2021)
- Interface Specification (IS-GPS-800G,14 May 2020)
- Interface Specification (IS-GPS-800F, 04 Mar 2019)
- Interface Specification (IS-GPS-800E, 25 Apr 2018)
- Interface Specification (IS-GPS-800D, 24 Sep 2013)
- Interface Specification (IS-GPS-800C, 05 Sep 2012)
- Interface Specification (IS-GPS-800B, 21 Sep 2011)
- Interface Specification (IS-GPS-800A, 08 June 2010)
- Interface Specification (IS-GPS-800, 04 Sep 2008)
IS-GPS-705 Navstar GPS Space Segment/User Segment L5 Interface
- Interface Specification (IS-GPS-705H, 23 Mar 2021)
- Interface Specification (IS-GPS-705G,14 May 2020)
- Interface Specification (IS-GPS-705F, 04 Mar 2019)
- Interface Specification (IS-GPS-705E, 25 Apr 2018)
- Interface Specification (IS-GPS-705D, 24 Sep 2013)
- Interface Specification (IS-GPS-705C, 05 Sep 2012)
- Interface Specification (IS-GPS-705B, 21 Sep 2011)
- Interface Specification (IS-GPS-705A, 08 Jun 2010)
- Interface Specification (IS-GPS-705, 24 Nov 2003, includes IRN 705 001-003)
ICD-GPS-240 Navstar GPS Control Segment to User Support Community Interface
- Interface Control Document (ICD-GPS-240D, 04 Mar 2021)
- Interface Control Document (ICD-GPS-240C, 05 Apr 2019)
- Interface Control Document (ICD-GPS-240B, 22 May 2018)
- Interface Control Document (ICD-GPS-240A, 12 Jan 2010)
ICD-GPS-870 Navstar Next Generation GPS Control Segment (OCX) to User Support Community Interface
- Interface Control Document (ICD-GPS-870E, 14 May 2020)
- Interface Control Document (ICD-GPS-870D, 04 Mar 2019)
- Interface Control Document (ICD-GPS-870C, 22 May 2018)
- Interface Control Document (ICD-GPS-870B, 24 Sep 2013)
- Interface Control Document (ICD-GPS-870A, 15 Jun 2011)
ICD-GPS-060 GPS User Equipment (Phase III) Interface Control Document for the Precise Time and Interval (PTTI)
- Interface Control Document (ICD-GPS-060B, 12 Feb 2002)
- Interface Control Document (ICD-GPS-060A, 02 Jun 1986)
GPS User Equipment Introduction