The fifth GPS-III satellite, GPSIII-05 (SVN-78/PRN-11, launched on 17 June 2021 from Space Launch Complex-40 at Cape Canaveral Air Force Station, Florida, has…
Author: CGSIC
CGSIC Bulletin: Updated GPS-III Satellite Timing Group Delay, Phase Center and Inter-Signal Bias Correction Data
Lockheed Martin Space has released updates to the GPS III SV01 (SVN74) thru SV04 (SVN77) antenna phase center offsets of the L1, L2 and…
CGSIC Bulletin: Upcoming NAVCEN Website Launch – URLs
As a reminder of our previous message, the NAVCEN web team is going to transition the NAVCEN website to a new and enhanced…
CGSIC Bulletin: 20 JAN 2022, SVN41 Will Resume Transmitting L-band Utilizing PRN22
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2022002 NANU TYPE: GENERAL *** GENERAL MESSAGE TO ALL GPS USERS *** On approximately 20 JAN 2022,…
CGSIC Bulletin: SVN47 (PRN22) DECOMMISSIONING JDAY 018/2200
U.S. Space Force has announced the decommissioning of SVN-47 (PRN-22). A replacement (R) satellite in the second generation of GPS satellites (GPS-IIR), SVN-47…
CGSIC Bulletin: 2021 GPS Proposed Changes to the Public Documents: Updated Materials Review
Updated Proposed Change Notices (PCNs) for IS-GPS-200, IS-GPS-705, and IS-GPS-800, related to RFC-467 (2021 Proposed Changes to the Public Documents), as well as…
CGSIC Bulletin: GPS Enterprise Roadmap
The US Space Force has released a graph of the GPS Enterprise Roadmap. The roadmap provides timelines for all the different elements of…
CGSIC Bulletin: Network Time Protocol – GPS Daemon Bug
As you may be aware, a potential vulnerability has been identified that may cause a “GPS Week Number Roll-over” type event to occur…
Update: Public Webinar Links for the 61st Civil GPS Service Interface Committee Meeting
Scheduled for 20-21 September
***Update with apologies for an issue with one of the previously publish meeting links*** The U.S. Department of Transportation (DOT) and the U.S….
CGSIC Bulletin: Potential GPS Interruptions, Mountain Home Air Force Base, Idaho
Mountain Home Air Force Base – 2 September 2021 – From September 7 – 12, Mountain Home Air Force Base will be conducting…