[IGSMAIL-3913]: June 5th test on PRN 23

[Steve Hilla]

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IGS Electronic Mail      03 Jun 09:33:49 PDT 2002      Message Number 3913
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Author: Steve Hilla

On behalf of the GPS Interagency Advisory Council
(GIAC), I have been asked to remind the IGS community
of the upcoming test on PRN23 (5 June to 7 June).
During the 48-hour period, PRN23's Health bits will
be set using a slightly different protocol.  Please
report any receiver problems or outages to the
U.S. Coast Guard Navigation Center:
(703) 313-5900,  http://www.navcen.uscg.gov .

Best regards,

Steve Hilla
National Geodetic Survey, NOAA

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*************************************************************
*********NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2002075
SUBJ: SVN23 (PRN23) FORECAST OUTAGE RESCHEDULED

1. NANU NUMBER:        2002075
   NANU DTG:           312209Z MAY 2002
   NANU Type:          FCSTRESCD
   REFERENCE NANU:     2002072
   REF NANU DTG:       241650Z MAY 2002
   SVN:                23
   PRN:                23
   START JDAY:         156
   START TIME ZULU:    1600
   START CALENDER DATE:Wednesday, June 05, 2002
   STOP JDAY:          158
   STOP TIME ZULU:     1600
   STOP CALENDER DATE: 07 JUN 2002
 2.  CONDITION: GPS SATELLITE SVN23 (PRN23) WILL BE UNUSABLE ON JDAY 156

    (05 JUN 2002) BEGINNING 1600 ZULU UNTIL JDAY 158 (07 JUN 2002)
    ENDING 1600 ZULU. PLEASE REFERENCE NANU NUMBER 2002072
    DTG 241650Z MAY 2002 FOR THE ORIGINAL OUTAGE TIME.

3.  POC: CIVILIAN - NAVCEN AT (703)313-5900, HTTP://WWW.NAVCEN.USCG.GOV
    MILITARY - GPS Support Center, DSN 560-2541,
    COMM 719-567-6616, GPS at SCHRIEVER.AF.MIL,
HTTP://WWW.SCHRIEVER.AF.MIL/GPS


2002078------------------------
*** GENERAL MESSAGE TO ALL GPS USERS ***
REGARDING NANU 2002075, PRN 23'S HEALTH BIT WILL BE SET TO '11111.'  FOR

THIS 48 HOUR PERIOD, THE US COAST GUARD (USCG) NAVIGATION CENTER
(NAVCEN)
IS THE FEEDBACK PATHWAY FOR ALL CIVIL GPS USERS, WITH THE EXCEPTION OF
AVIATION USERS.  THE FEDERAL AVIATION ADMINISTRATION (FAA) NATIONAL
OPERATIONS CONTROL CENTER (NOCC) IS THE FEEDBACK PATHWAY FOR CIVIL
AVIATION
GPS USERS.

FOR THIS PERIOD, THE GPS SUPPORT CENTER (GSC) WILL OPERATE 24/7 AND
SERVE
AS THE SPACEAF FEEDBACK POC FOR THE NAVCEN AND NOCC.  THE MILITARY USERS

WILL PROVIDE FEEDBACK THROUGH THE USSPACECOM SPOC AND/OR THE SPACEAF
AOC.

THE NAVCEN AND NOCC HAVE STANDARD FORMATS (TO INCLUDE SPECIFICS OF
LOCATION, RECEIVER BEHAVIOR, USER ACTIONS, AND DIAGNOSTIC DATA THAT MAY
BE
AVAILABLE, ETC.) FOR REPORTING GPS PROBLEMS, ANOMALIES, AND OUTAGES.
THESE
FORMATS WILL PROVIDE SUFFICIENT INFORMATION FOR REPORTING CIVIL IMPACTS.

ROUTE ANY OTHER FEEDBACK THROUGH SPACEAF AOC AT COMMERCIAL (805)
606-9994
OR DSN 276-9994.

*** GENERAL MESSAGE TO ALL GPS USERS ***
*******************************************************************