All CGSIC,        The Air Force Second Space Operations Squadron (2 SOPS) has issued a LAUNCH NANU for SVN-74, the first of the new generation of GPS-III satellites.  To clear up any confusion this may have caused, SVN-74 was launched on 23 December of 2018, JDAY 357 2018, but there is no provision in a strictly formatted LAUNCH NANU to list a previous year.  The first of its kind, this satellite was launched outside of the GPS Ground […]

  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 […]

  All CGSIC, 59th meeting of the U.S. Civil GPS Service Interface Committee The U.S. Department of Transportation (DOT) and the Coast Guard Navigation Center (NAVCEN) will host the 59th meeting of the Civil Global Positioning System Service Interface Committee (CGSIC), Sept. 16-17, 2019, at the Hyatt Regency Miami in Miami, FL. CGSIC meetings are free and open to the public.  DOT serves as the civil lead for the GPS and chairs the CGSIC in this capacity. NAVCEN is assigned […]

  GPS III Space Vehicle 02 Launch scheduled for 22 August 2019 All CGSIC:     On August 22nd, the Air Force plans to launch the second satellite in the Block III series of modernized GPS spacecraft with entry into the operational constellation planned for Spring 2020.  The Air Force has 10 GPS III satellites in development and has awarded a contract for GPSIII SV-11 through SV-32.  GPS III features new clocks, L1C (a new civil signal), and other upgrades […]

  All CGSIC, 59th Civil GPS Service Interface Committee Meeting Scheduled for 16-17 September The U.S. Department of Transportation (DOT) and the Coast Guard Navigation Center (NAVCEN) are pleased to announce preparations for the 59th meeting of the Civil GPS Service Interface Committee (CGSIC).  The meeting will be conducted September 16-17, 2019, at the Hyatt Regency Miami in Miami, FL, in conjunction with the Institute of Navigation's ION GNSS+ 2019 conference. CGSIC meetings […]