CGSIC Bulletin: 63rd meeting of the U.S. Civil GPS Service Interface Committee (CGSIC)

On the 11th and 12th of September 2023, the 63rd meeting of the U.S. government’s Civil GPS Service Interface Committee (CGSIC) will be hosted by the U.S. Department of Transportation (DOT) and the U.S. Coast Guard Navigation Center (NAVCEN) in the Hyatt Regency Denver at the Colorado Convention Center.  DOT serves as the civil lead for the Global Positioning System (GPS) and chairs the CGSIC in this capacity. NAVCEN fulfills duties as Deputy Chair and Executive Secretariat for the CGSIC.

On Monday, September 11th, the Subcommittees of the CGSIC for Timing, International Information, and Survey, Mapping, and Geosciences will hold their meetings.  A summary of these subcommittee meetings will be presented to the CGSIC Plenary Session on Tuesday, September 12th.

The Keynote speaker for this year’s CGSIC Plenary Session will be Dr. Robert Hampshire, Deputy Assistant Secretary for Research and Technology, Chief Science Officer, U.S. Department of Transportation.  Agendas for the CGSIC Subcommittee and Plenary sessions will include presentations on the operational status and modernization of the GPS constellation of satellites, U.S. space-based Position, Navigation and Timing (PNT) policy, GPS augmentation systems, information related to U.S. engagement with other international Global Navigation Satellite Systems (GNSS) as well as a variety of interesting applications and use of GPS.

Several new briefings are part of the Plenary session this year, including a presentation on receiving precision timing and position from the television broadcast network as well as a celebration of the 50th Anniversary of the 1973 commencement of GPS.  Also, the National Aeronautics and Space Administration will provide an update on NASA’S Artemis program establishing a sustainable presence on the moon to prepare for missions to Mars.

An agenda for the CGSIC meetings in Denver is available at  All CGSIC presentations will available there for viewing online shortly after the meeting conclusion.  As a reminder, all CGSIC meetings are free and open to the public so please come by for an interesting couple of days’ briefings on the U.S. civil GPS program.

To learn more about the Coast Guard Navigation Center, visit