Subject: [IGSREPORT-330] ESA06997.SUM
From: Joachim Feltens
Date: 18 JUN 1993 09:05:26

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IGS Electronic Report     18-JUN-1993 09:05:26       Message Number 330
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From: Joachim Feltens 
Subject: ESA06997.SUM
---------------------

 -------------------------
 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 30 - Jun 05
                                                        (week 0699)
 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: On Day 156 (5 June) A/S has been set on at 00:00. SV-09/PRN13
             shows degraded orbit accuracy on day 156. This satellite has
             currently an eclipse season, and the RMS of observation resi-
             duals is higher than for the other satellites. A possible rea-
             son for this could be power supply problems to maintain L1/L2
             transmission during eclipse (CANSPACE- mail of 19 May 93).

 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
 0699___| FAIR  KOKB  MASP  PAMA  TIDB  WETT       |i |s |o
    |DAY|  GOLD  KOUR  MATE  RCM2  TROM  YAR1      |x.|t.|t.
 ---|---|------------------------------------------|--|--|--
    |150| FFF   FFe   Fee   e-e   -FF   eFF   F    |11| 6|17
    |151| FFF   F-e   Fee   --e   -FF   eFF   F    |10| 5|15
    |152| FFF   F-e   Fee   --e   -FF   eFF   F    |10| 5|15
    |153| FFF   FFe   Fee   e-e   FFF   eFF   F    |12| 6|18
    |154| FFF   F-e   Fee   e-e   FF-   eFF   F    |10| 6|16
    |155| FFF   F-e   Fee   e-e   FF-   eFF   F    |10| 6|16
    |156| FFF   --e   Fee   e-e   FFF   eFF   F    |10| 6|16

    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|  150   151   152   153   154   155   156
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   01 |  1.4   1.9   2.1   1.6   1.1   1.9   9.9
   02 |  1.1   0.8   1.2   1.7   0.8   1.5   1.4
   03 |  2.9   1.1   3.1   1.7   1.2   0.7   0.9
   12 |  1.8   0.5   0.7   2.5   2.2   1.6   0.6
   13 |  2.7   0.6   2.6   1.7   1.4   2.5  15.7
   14 |  1.4   2.0   0.5   1.5   1.1   0.9   0.6
   15 |  2.6   2.0   1.7   1.6   1.5   1.3   5.3
   16 |  0.9   1.2   2.0   1.1   1.9   0.6   1.7
   17 |  2.1   0.8   1.2   2.0   1.1   1.1   1.4
   18 |  1.2   1.5   1.1   1.9   2.2   1.5   2.4
   19 |  4.1   3.2   2.0   2.7   1.6   1.7   1.4
   20 |  1.5   0.6   1.4   1.4   1.5   0.4   3.0
   21 |  1.2   0.9   1.5   1.3   2.0   1.4   3.4
   22 |  1.2   0.7   0.9   2.2   2.8   1.1   3.5
   23 |  2.1   1.1   1.0   1.4   1.1   0.8   0.9
   24 |  1.1   1.8   1.4   1.5   1.0   1.1   2.2
   25 |  1.2   1.2   1.8   1.8   3.0   1.1   3.1
   26 |  1.8   1.1   1.5   2.1   0.9   0.7   6.8
   27 |  4.2   1.8   1.8   2.1   1.0   1.5   3.4
   28 |  1.8   2.6   0.9   2.8   0.9   1.5   0.9
   29 |  3.7   1.1   0.9   1.6   1.2   2.0   1.4
   31 |  3.9   1.8   2.6   4.6   1.5   2.4   2.7

 6. PRODUCTS GENERATED:

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

  ESA0699*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
  ESA06997.ERP - Earth rotation results for week 0699 (including DUT1R)
  ESA06997.SUM - This summary file

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