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Civil GPS Service Interface Committee

The Civil GPS Service Interface Committee (CGSIC) is the recognized worldwide forum for effective interaction between all civil GPS users and the U.S. GPS authorities.

The U.S. Coast Guard Navigation Center (NAVCEN) coordinates and manages CGSIC in cooperation with the Department of Transportation.


The Department of Transportation established CGSIC to exchange information about GPS with the civil user community, respond to the needs of civil GPS users, and integrate GPS into civil sector applications. View charter

Information from CGSIC members and meetings is provided to United States GPS authorities for consideration in GPS policy development and GPS service operation.

Public Participation

CGSIC meets annually and is open to anyone interested in civil GPS issues. Membership is free, and there is no fee to attend any CGSIC meeting.


CGSIC includes members from U.S. and international private, government, and industry user groups.


Four subcommittees focus on specific user groups:

56th CGSIC Meeting

The full Civil GPS Service Interface Committee convened September 12-13, 2016, at the Portland Convention Center in Portland, Oregon, in conjunction with the ION GNSS+ 2016 conference.

View agenda & presentations
Other Meetings Open Issues


An Executive Panel consists of the Chair, Deputy Chair, Subcommittee Chairs, and representatives from several different transportation modes.

Ms. Karen Van Dyke
Director, Positioning, Navigation and Timing Programs
Office of the Assistant Secretary for Research and Technology
U.S. Department of Transportation
Deputy Chair:
Captain Russell Holmes
Commanding Officer
U.S. Coast Guard Navigation Center
International Deputy Chair:
Mr. John Wilde
DW International
United Kingdom
Executive Secretariat:
Mr. Rick Hamilton
GPS Information Analysis Team Lead
U.S. Coast Guard Navigation Center

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