Global Positioning System Email Status Report Page

The Cedar Mesa Project

GPS Email Status Report

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The following is an example of a daily email GPS status report available from http://www.navcen.uscg.mil/gps/status/default.htm -

SUBJ: GPS STATUS      16 Feb 2000

1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM):

A. BLOCK I : NONE

B. BLOCK II: PRNS  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 13, 14, 15,
   PLANE   : SLOT F4, B3, C2, D4, B4, C1, C4, A3, A1, E3, D2, F5, E1, D5,
   CLOCK   :      CS, CS, CS, RB, CS, CS, RB, CS, CS, CS, RB, RB, CS, CS,

   BLOCK II: PRNS 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31
   PLANE   : SLOT E5, D3, F3, A5, E2, B1, E4, D1, A2, F2, A4, F1, B2, C3
   CLOCK   :      CS, CS, CS, CS, CS, RB, CS, RB, CS, RB, CS, RB, CS, CS

2. CURRENT ADVISORIES AND FORECASTS :

A. FORECASTS:   FOR SEVEN DAYS AFTER EVENT CONCLUDES.

NANU          MSG DATE/TIME     PRN  TYPE       SUMMARY (JDAY/ZULU TIME
START - STOP)

B. ADVISORIES:

NANU          MSG DATE/TIME     PRN  TYPE       SUMMARY (JDAY/ZULU TIME
START - STOP)

2000020         260144Z JAN 2000    14     UNUSUFN      026/0130-/
2000023         032241Z FEB 2000    14     UNUSABLE     026/0130-034/1816

C. GENERAL:

NANU          MSG DATE/TIME     PRN  TYPE       SUMMARY (JDAY/ZULU TIME
START - STOP)

3. REMARKS:

A. ANTI-SPOOF WAS DEACTIVATED ON JDAY 033 (02 FEB 97) AT OOOOZ.
ANTI-SPOOF WAS REACTIVATED ON JDAY 055 (24 FEB 97) AT 0000Z.

B. THE POINT OF CONTACT FOR GPS MILITARY OPERATIONAL SUPPORT IS
LT CMDR WALLS (719)554-5770 OR DSN 692-5770.

C. CIVILIAN:  FOR INFORMATION, CONTACT US COAST GUARD NAVCEN AT
COMMERCIAL (703)313-5900 24 HOURS DAILY,
AND INTERNET HTTP://WWW.NAVCEN.USCG.MIL OR FTP://FTP.NAVCEN.USCG.MIL.

D. MILITARY: FOR INFORMATION, CONTACT CAPT PAUL HERMANN, 2SOPS/DOAN
NAVIGATION ANALYST AT (719)567-6393, DSN 560-6393, OR INTERNET
HTTP://WWW.SCHRIEVER.AF.MIL/GPS.

The definitions of the various abbreviations are available at - http://www.navcen.uscg.mil/gps/geninfo/abbrev.htm, see "NANU's Abbreviations."

The following are some of the basic ones -

NANU Types and Templates

FCSTCANC, or Forecast Cancellation -.cancels a scheduled outage; new maintenance time not yet determined; references the original NANU.
FCSTDV, or Forecast Delta-V - gives scheduled outage times for Delta-V maneuvers. The satellite is moved during this maintenance and the user may be required to download a new almanac.
FCSTEXTD, or Forecast Extension - extends the scheduled outage time "Until Further Notice"; references the original NANU.
FCSTMX, or Forecast Maintenance - gives scheduled outage times for Ion Pump Operations or software tests.
FCSTRESCD, or Forecast Rescheduled - reschedules a scheduled outage; references the original NANU Unscheduled Outages
FCSTSUMM, or Forecast Summary - gives the exact outage times for the scheduled outage, including the FCSTEXTD; sent after the maintenance is complete and the satellite is set healthy to users; references the original NANU.
GENERAL, informs the user of general GPS information.
LEAPSEC, or Leap Second, is used to notify users of an impending Leap Second.
UNUSUFN, or Unusable Until Further Notice - notifies users that a satellite will be Unusable to all users until further notice.
UNUSABLE, or UNUSABLE with a reference NANU - closes out an UNUSUFN NANU and gives the exact outage times for the outage; references the UNUSUFN NANU.
UNUNOREF, or UNUSABLE with no reference NANU - gives times for outages that were resolved before a UNUSUFN NANU could be sent.
USABINIT, or Initially Usable, notifies users that a satellite is set healthy for the first time.

(NANU = Notice Advisory to Navstar Users)

A critical bit of information once you are getting this service is how to get off it. See Getting Off the GPS Email Status Report for a copy of the one-time mailing introducing the system and how to get off the listing service. You get this only once when you sign up.

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