All CGSIC, The GPS Directorate has announced the 2019 GPS Virtual Public Interface Control Working Group Meeting On May 7th, 2019, the GPS Directorate will hold a virtual Public Interface Control Working Group Meeting. During the meeting, the Directorate will review changes to several GPS public documents to reflect how users will calculate the correct UT1 time following a leap second transition. The 2019 virtual Public Interface Control Working Group is open to the public. This meeting is […]

  All CGSIC, GPS III Space Vehicle 02 “Magellan” arrives in Florida; Prepares for July launch On March 20, 2019, U.S. Air Force’s Space and Missile Systems Center’s Global Positioning Systems Directorate successfully delivered the second GPS III satellite to Astrotech Space Operations in Titusville, Florida, in preparation for a planned July launch from Cape Canaveral. Read the full SMC Public Affairs article on the Los Angeles Air Force Base webpage: […]

  All CGSIC, NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2019040 NANU TYPE: GENERAL *** GENERAL MESSAGE TO ALL GPS USERS *** GPS week rollover will occur 06-APR-2019, users may access the following article for further information:  https://www.schriever.af.mil/News/Article-Display/Article/1776011/gps-week-number-to-rollover/ *** GENERAL MESSAGE TO ALL GPS USERS *** POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTPS://WWW.NAVCEN.USCG.GOV    MILITARY - GPS OPERATIONS CENTER at […]

  All CGSIC, Coast Guard Navigation Center: Special Notice to All Mariners Who Use GPS Equipment The Coast Guard Navigation Center has published a special notice to mariners that use GPS Equipment. The special notice outlines the details of the GPS Week Number Rollover that will occur on 6-7 April. Users can find the special notice on NAVCEN’s website: https://navcen.uscg.gov/pdf/lnms/LNM_Special_Notice_2019_Use_GPS_Equipment_Indefinite.pdf To best prepare for the rollover […]

  All CGSIC, Advance Notification of GPS Event that could Affect COSPAS-SARSAT System Components In February 2019, the COSPAS-SARSAT Council published a paper providing advance notification of the GPS Week Number Rollover event that could affect COSPAS-SARSAT system components. The paper discusses the possible impacts as a result of the GPS Week Number Rollover that will occur on April 6-7, 2019. Purpose: This paper provides the background and information on an event that will occur 6 […]