Subject: [IGSREPORT-252] ESA Analysis Report (week 692)
From: Joachim Feltens
Date: 5 MAY 1993 09:27:29

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IGS Electronic Report      5-MAY-1993 09:27:29       Message Number 252
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From: Joachim Feltens 
Subj: ESA Analysis Report (week 692)
------------------------------------

 -------------------------
 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 April 11 - April 17
                                                            (week 0692)
 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

 3. REMARKS: One day 103  (13 April 1993)  a  manoeuvre  was   announched  for
             SV20/PRN20   (CANSPACE mail of 1 April 1993).   We have  detected
             that manoeuvre at 03:45 UTC on day 103  and estimated a  velocity
             increment of 174 mm/sec. On day 103, however, we obtained a worse
             value for the polar motion  xp-component.  This effect could  not
             be eliminated by re-running  day 103 without  spacecraft  no. 20.

 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
 0692___| FAIR  KOKB  MASP  PAMA  TIDB  WETT       |i |s |o
    |DAY|  GOLD  FOUR  MATE  RCM2  TROM  YAR1      |x.|t.|t.
 ---|---|------------------------------------------|--|--|--
    |101| FFF   FFe   Fee   eee   FFF   eFF   F    |12| 7|19
    |102| FFF   FFe   Fee   eee   FFF   eFF   F    |12| 7|19
    |103| FFF   FFe   Fee   eee   FFF   eFF   F    |12| 7|19
    |104| FFF   FFe   Fee   eee   FFF   eFF   F    |12| 7|19
    |105| FFF   FFe   Fee   e-e   FFF   eFF   F    |12| 6|18
    |106| FFF   FFe   Fee   e-e   FFF   eFF   F    |12| 6|18
    |107| FFF   FFe   Fee   e-e   FFF   eFF   F    |12| 6|18

    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|  101   102   103   104   105   106   107
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   01 |  4.0   2.4   7.1  11.6   9.5   3.0   2.5
   02 |  1.4   1.0   1.1   1.2   0.8   1.3   0.9
   03 |  1.3   1.1   1.4   2.4   1.2   1.2   1.5
   11 |  2.5   2.6   1.1   1.3   4.4   2.2   0.5
   12 |  0.7   1.1   1.5   2.1   0.5   0.4   0.6
   13 |  0.7   2.3   1.9   3.9   1.4   0.8   0.9
   14 |  1.7   0.6   2.0   2.3   1.7   0.7   1.4
   15 |  1.7   2.7   3.0   1.3   2.5   1.0   0.9
   16 |  2.8   1.1   3.4   2.6   0.8   1.6   3.6
   17 |  1.0   0.5   1.4   1.8   0.6   1.1   0.7
   18 |  0.9   0.7   1.3   5.3   1.3   1.0   1.4
   19 |  2.2   2.4   1.9   1.1   1.2   0.6   0.9
   20 |  1.0   0.5 150.8  42.5   1.2   1.2   0.5
   21 |  1.7   1.0   1.9   2.8  11.2   0.9   1.0
   22 |  2.1   5.9   4.8   1.1   0.8   0.8   1.6
   23 |  1.5   1.1   0.8   0.8   2.8   0.7   1.8
   24 |  0.8   0.4   4.3   4.5   0.6   0.6   1.7
   25 |  3.9   6.0   2.9   2.5   3.1   1.5   0.7
   26 |  1.6   2.1   3.4   1.5   2.0   2.2   2.6
   27 |  0.6   3.0   1.3   0.9   0.7   0.9   0.8
   28 |  1.5   0.8   1.3   2.4   1.9   1.3   4.6
   29 |  1.8  12.1  17.8  11.6  10.3   2.1   3.1

 6. PRODUCTS GENERATED:

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

  ESA0692*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
  ESA06927.ERP - Earth rotation results for week 0692 (including DUT1R)
  ESA06927.SUM - This summary file

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