Users of the Global Positioning System (GPS) in various parts of the world may experience short periods of high Horizontal Dilution of Precision (HDOP)/Position Dilution of Precision (PDOP) (DOP >6) at various times between 120400Z – 121600Z MAR 2015 due to satellite maintenance (NANU 2015015). Further details can be found on the Coast Guard navigation Center’s website: http://www.navcen.uscg.gov/?pageName=degradation_03122015
Predictions are based on a "Best Four" analysis to illustrate the worst case scenario and are provided for situational awareness only.
Please report any outages through the NAVCEN "Report a GPS Problem" page.
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015015
SUBJ: SVN57 (PRN29) FORECAST OUTAGE JDAY 071/0400 – JDAY 071/1600
1. NANU TYPE: FCSTDV
NANU NUMBER: 2015015
NANU DTG: 070000Z MAR 2015
REFERENCE NANU: N/A
REF NANU DTG: N/A
SVN: 57
PRN: 29
START JDAY: 071
START TIME ZULU: 0400
START CALENDAR DATE: 12 MAR 2015
STOP JDAY: 071
STOP TIME ZULU: 1600
STOP CALENDAR DATE: 12 MAR 2015
2. CONDITION: GPS SATELLITE SVN57 (PRN29) WILL BE UNUSABLE ON JDAY 071
(12 MAR 2015) BEGINNING 0400 ZULU UNTIL JDAY 071 (12 MAR 2015)
ENDING 1600 ZULU.
3. POC: CIVILIAN – NAVCEN AT 703-313-5900, HTTP://WWW.NAVCEN.USCG.GOV MILITARY – GPS OPERATIONS CENTER at HTTPS://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541, COMM 719-567-2541, gpsoperationscenter@us.af.mil, HTTPS://GPS.AFSPC.AF.MIL
MILITARY ALTERNATE – JOINT SPACE OPERATIONS CENTER, DSN 276-3514,
COMM 805-606-3514, JSPOCCOMBATOPS@VANDENBERG.AF.MIL