Subject: [IGSREPORT-291] ESA06967.SUM
From: Carlos Garcia
Date: 24 MAY 1993 18:36:11

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IGS Electronic Report     24-MAY-1993 18:36:11       Message Number 291
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From: Carlos Garcia 
Subject: ESA06967.SUM
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 -------------------------
 ANALYSIS CENTRE: ESA/ESOC
 -------------------------

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

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

 Description of analysis for period 1993 May 09 - May 15
                                                        (week 0696)
 1. SOFTWARE USED:   GPSOBS/BAHN-Version 5

 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 and
                                                      see IGS - Rep. 224,277

 3. REMARKS: Fitted orbits compared  with extrapolated orbits  from previous
             day show larger differences than usual for PRNs 03,12,13,28,31.
             This cannot be clearly explained.  As possible reason  might be
             that less measurements were available for these satellites.

 4. GROUND STATIONS: Boucher and Altamimi, IGS workshop Berne 24-27 March'93
                     IGS/IERS station coordinates in the ITRF91 at 1992.6
 ___________________________________________________________
 GPSweek|ALGO  HART  MADR  MCMU  SANT  USUD  YELL  |f |e |t
 0696___| FAIR  KOKB  MASP  PAMA  TIDB  WETT       |i |s |o
    |DAY|  GOLD  KOUR  MATE  RCM2  TROM  YAR1      |x.|t.|t.
 ---|---|------------------------------------------|--|--|--
    |129| FFF   FFe   Fee   e-e   FFF   eFF   F    |12| 6|18
    |130| FFF   FFe   Fee   e-e   FFF   eFF   F    |12| 6|18
    |131| FFF   FFe   Fee   e-e   FFF   eFF   F    |12| 6|18
    |132| FFF   FFe   Fee   e--   F-F   e-F   F    |10| 5|15
    |133| FFF   FFe   Fee   e-e   FFF   eFF   F    |12| 6|18
    |134| FFF   FFe   Fee   e-e   FFF   eFF   F    |12| 6|18
    |135| FFF   FFe   Fee   e-e   FF-   eFF   F    |11| 6|17

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

 5. ORBIT FIT MINUS EXTRAPOLATION FROM PREVIOUS DAY, RMS IN <METER>

  \DAY|  129   130   131   132   133   134   135
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   01 |  1.3   1.5   0.8   1.0   1.3   2.3   1.9
   02 |  1.0   1.6   0.8   1.9   1.3   1.2   0.8
   03 |  1.1   1.2   1.5   7.9   0.7   1.0   1.0
   12 |  1.1   0.5   4.5   0.6   1.8   0.9   2.7
   13 |  2.6   1.0   1.1   0.7   1.1   3.8   6.4
   14 |  1.2   1.2   1.5   0.7   1.5   0.7   0.7
   15 |  1.6   1.1   0.9   0.9   1.6   1.2   1.0
   16 |  1.4   2.1   0.5   2.8   1.0   2.4   1.0
   17 |  1.0   1.1   0.7   1.6   1.7   0.9   0.9
   18 |  2.1   1.5   1.0   1.3   1.0   2.8   1.0
   19 |  1.3   1.6   1.8   1.2   1.3   0.9   1.5
   20 |  0.8   0.8   0.5   0.7   0.6   0.8   0.9
   21 |  1.3   2.3   0.5   0.8   1.3   1.5   1.6
   22 |  1.9   1.5   1.4   2.2   1.3   1.0   1.4
   23 |  1.4   0.6   0.9   0.7   1.0   0.6   0.5
   24 |  1.8   0.8   1.2   0.8   0.7   0.6   1.6
   25 |  0.8   1.7   1.2   0.8   0.8   0.8   1.0
   26 |  2.4   1.8   2.1   0.8   3.2   1.9   0.9
   27 |  1.1   1.2   1.2   1.0   0.9   0.7   1.3
   28 |  4.3   4.9   1.7   1.4   1.5   3.4   1.6
   29 |  2.9   1.1   1.0   1.1   1.1   0.8   1.1
   31 |  3.4   5.5   7.0   1.1   1.9   1.5   3.0

 6. PRODUCTS GENERATED:

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

  ESA0696*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
  ESA06967.ERP - Earth rotation results for week 0696 (including DUT1R)
  ESA06967.SUM - This summary file

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