GPS World

Tag: ICD-GPS-870

  • 2022 Public Interface Control forum set for Sept. 28

    2022 Public Interface Control forum set for Sept. 28

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    The 2022 Public Interface Control Working Group and Open Public Forum will take place virtually on Sept. 28, the U.S. Air Force has announced. It is hosted by Space Systems Command, Military Communications and Positioning, Navigation, Timing Directorate.

    The following NAVSTAR GPS public documents will be discussed:

    • IS-GPS-200 (Navigation User Interfaces)
    • IS-GPS-705 (User Segment L5 Interfaces)
    • IS-GPS-800 (User Segment L1C Interface)
    • ICD-GPS-870 (Control Segment [OCX] to User Support Interface).

    The virtual meeting can be accessed via the following dial-in numbers and links:

    The Air Force requests that those who would like to attend register no later than Aug. 25.

    Additional logistical details can be found in the Federal Register Notice.

  • New NAVCEN chart shows GPS satellite locations

    New NAVCEN chart shows GPS satellite locations

    The GPS Directorate has approved a change to the Navstar GPS Control Segment to User Support Community Interfaces ICD-GPS-240 and ICD-GPS-870, reports the U.S. Coast Guard Navigation Center.

    The change removes the GPS satellite plane/slot and clock information from the Operational Advisory message. SVN/PRN, block type and NANU details will continue to be included.

    The change proposal was approved by the GPS Interface Control Working Group in December 2018.

    A depiction of the GPS constellation of satellites with slot and plane designations has been published by the U.S. Coast Guard Navigation Center as an easy-to-read graphic for use by the GPS user community.

    Chart: NAVCEN
    Chart: NAVCEN

    The chart can be found on the NAVCEN Constellation Status page and will be updated with the commissioning of new GPS satellites or upon any change in the constellation.