[IGSREPORT-42] ESA analysis report

[Tomas]

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IGS Electronic Report     14-DEC-1992 12:00:20       Message Number 42
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From:    Tomas Martin Mur
Subject: ESA analysis report
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 -------------------------
 ANALYSIS CENTRE: ESA/ESOC
 -------------------------

 OUTLINE OF THE ESTIMATION OF GPS-ORBITS AND EARTH ROTATION PARAMETERS
 AT THE ESOC PROCESSING CENTER FOR IGS

 J.M.Dow, J.Feltens, T.Martin Mur, C.Garcia-Martinez

 Description of analysis for period 1992 November 29 - December 05

 1. SOFTWARE USED:   GPSOBS/BAHN5

 2. MODELS USED AND PARAMETERS ESTIMATED/FIXED

  For a description of models and parameters used ==> see IGS - Mail  51
  For updates of the models and parameters used   ==> see IGS - Mail 114

                               * * *

  This week A/S has been switched on already on Thursday (day 338). So during
  the whole week, only Tuesday and Wednesday (days 336 and 337) were A/S-free.

                               * * *

   The mail of November 17 from CANSPACE announced the repositioning of the
   satellite PRN# 16 on day 339 (4 DEC 92), with an outage of 8 hours beginning
   at 19:10 UTC. We have detected a manoeuvre that was performed at about
   20:58 UTC. The estimation of this manoeuvre give us an along-track impulse
   of -0.1817 m/sec with an uncertainty of 0.0003 m/sec.

                               * * *

  The comparison between fitted orbits and the orbits predicted from the
  previous day's fit are less than (1,3,8) meters on usual days and less than
  (2,6,20) meters on A/S-days. Exceptions are:

           On day 337   PRN# 27 (4,13,34) meters

 3. GROUND STATIONS (if being estimated, one position (X,Y,Z) every day):

  The following table gives an overview over the ground stations that
  have been included into the GPS-data processing at ESOC. Except where
  otherwise noted ("remarks"), corrections are taken from IGS Mail
  No. 90 - IGS site information and coordinates,updated version of
  IERS/IGS Tables in IGS Mail No. 65  -  (Boucher and Altamimi).
  ______________________________________________________________________
                     |             |    |    GPS WEEK 673     |
                     |             |    | 3  3  3  3  3  3  3 |
                     |             |    | 3  3  3  3  3  3  4 |
         SITE        |   COUNTRY   |CODE| 4  5  6  7  8  9  0 | REMARKS
  -------------------|-------------|----|---------------------|---------
   Albert Head       | Canada      |ALBH| e  e  e  e  e  e  e |
   Algonquin         | Canada      |ALGO| F  F  F  F  F  F  F |
   CANB/Tidbinbilla  | Australia   |TIDB| e  e  e  e  e  e  e |
   Penticton         | Canada      |DRAO| ------------------- |
   Fairbanks         | U.S.A./AK   |FAIR| F  F  F  F  F  F  F |
   Goldstone         | U.S.A./CA   |GOLD| F  F  F  F  F  F  F |
   Graz              | Austria     |GRAZ| e  e  e  e  e  e  e |
   Hartebeesthoek    | South Africa|HART| F  F  F  F  F  F  F |
   Hobart/Tasmania   | Australia   |HOBA| e  e  e  e  e  e  e |
   JPL Mesa          | U.S.A./CA   |JPLM| ----------------- e |own est.
   Kootwijk          | Netherlands |KOSG| e  e  e  e  e  e  e |
   Kokee Park        | U.S.A/Hawaii|KOKB| e  e  e  e -------- |
   Kourou      (ESA) | French Guyan|KOUR| e  e  e  e  e  e  e |own est.
   Madrid            | Spain       |MADR| F  F  F  F  F  F  F |
   Maspalomas  (ESA) | Spain/Can.Is|MASP| e  e  e  e  e  e  e |
   Matera            | Italy       |MATE| F  F  F  F  F ----- |
   McMurdo           | Antarctica  |MCMU| e  e  e --- e  e  e |
   Metsahovi         | Finland     |METS| -- e  e  e  e  e  e |
   Ny Alesund/Spitzb.| Norway      |NYAL| ------------------- |
   Onsala            | Sweden      |ONSA| F  F  F  F  F  F  F |
   Pamate/Tahiti     | France      |PAMA| e  e  e  e --- e -- |
   Richmond          | U.S.A./FL   |RCM2| e  e  e  e --- e  e |
   Santiago          | Chile       |SANT| F  F  F  F  F  F  F |
   St.John's, NF     | Canada      |STJO| e  e  e  e  e  e  e |
   Tai-Shi           | Taiwan      |TAIW| ------------------- |
   Tromso            | Norway      |TROM| e  e  e  e  e  e  e |
   Usuda             | Japan       |USUD| e  e --- e  e  e  e |
   Wettzell          | Germany     |WETT| F  F  F  F  F  F  F |
   Yaragadee         | Australia   |YAR1| F  F  F  F  F  F  F |
   Yellowknife       | Canada      |YELL| F  F  F  F  F  F  F |

       with: "F" ... coordinates of ground station kept fixed,
             "e" ... coordinates of ground station estimated,
             "-" ...  station not included on that day.

 4. PRODUCTS GENERATED

  The following products are generated and stored in CDDIS at NASA/GSFC:

  ESA0673*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
  ESA06737.ERP - Earth rotation results for week 0673 (including DUT1R)
  ESA06737.SUM - This summary file

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