All CGSIC,

Publication of New Graphic Representing GPS Satellite Slot and Plane Designations

The Global Positioning System Directorate has approved a change to the Navstar GPS Control Segment to User Support Community Interfaces (ICD-GPS-240 and ICD-GPS-870) which will remove GPS satellite plane/slot and clock information from the Operational Advisory message. This change proposal was approved by the GPS Interface Control Working Group in December of 2018. SVN/PRN, Block Type, and NANU details will continue to be included in the Operational Advisory message.

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.  The publication 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.

.Rick Hamilton
CGSIC Executive Secretariat
GPS Information Analysis Team Lead
U.S. Coast Guard Navigation Center
703-313-5930