Subject: [IGSREPORT-565] ESA07187.SUM
From: C.Garcia
Date: 26 OCT 1993 15:46:30

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IGS Electronic Report     26-OCT-1993 15:46:30       Message Number 565
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From: C.Garcia 
Subj: ESA07187.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.J.Martin-Mur, C.Garcia-Martinez

 Description of analysis for period 1993 Oct 10 - Oct 16
                                                        (week 0718)
 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 days 287 and 288, high residuals and bad force
               modelling for satellite SV-37/PRN07. The orbit
               of this satellite was estimated in a different process
               to avoid ERPs and other satellites being affected.

             - Satellite SV-11/PRN03 was removed on DOY 288 due
               to the lack of observations. The satellite was set
               unusable for several hours on this day. See
               CANSPACE mail 93/10/15.

             - As already announced in our IGS mail 353 of 22 October 1993,
               we are including the such called "Satellite Accuracy Exponents"
               into the SP3 header format of our daily orbit files from
               this week 0718 on. For details please take into our IGS mail
               353. An exponent of "0" means, that there was on the previous
               day no orbital fit of the corresponding satellite to compare
               with. So in this case no exponent can be computed.

 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  KOUR  MATE  SANT  USUD  YELL  |f |e |t
 0718___| FAIR  KIRU  MADR  MCMU  TIDB  WETT       |i |s |o
    |DAY|  GOLD  KOKB  MASP  PERT  TROM  YAR1      |x.|t.|t.
 ---|---|------------------------------------------|--|--|--
    |283| FFF   FeF   eFe   eee   FFF   eFF   F    |12| 7|19
    |284| FFF   FeF   eFe   eee   FFF   eFF   F    |12| 7|19
    |285| FFF   FeF   eFe   eee   FFF   eFF   F    |12| 7|19
    |286| FFF   FeF   eFe   e-e   FFF   eFF   F    |12| 6|18
    |287| FFF   FeF   eFe   eee   FFF   eFF   F    |12| 7|19
    |288| FFF   FeF   eFe   eee   FFF   eFF   F    |12| 7|19
    |289| FFF   FeF   eFe   eee   FFF   eFF   F    |12| 7|19

    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 <CENTIMETER>

  \DAY|  283   284   285   286   287   288   289
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   02 |   75    84   103   101    86   109    68
   03 |   47    25    34    32    32    --    --
   12 |   27    38    41    22    50    46    26
   13 |   83   104    41    70    45    36    74
   14 |   62    28    74    29   105    57    29
   15 |  138    68    45    47    44    91    37
   16 |   57   192    48    46    67    87    70
   17 |  141   126    35    45    28    89    29
   18 |   85    70    94    58   127    78    78
   19 |   85    46   118    76    69   106    55
   20 |   64    52    94   116    64    47    58
   21 |  180    99    92    93   155   112    47
   22 |   55    71    60    82    79    37   134
   23 |  130    32    98    49    55    95    25
   24 |   52    63    32    25    33    83    53
   25 |   83    78    92    60   132    67    75
   26 |   71   167    64    66   105    98   122
   27 |   86   100   155    96    48    93    76
   28 |   54    83    86    44    79    83   112
   01 |  135    86    70    98    66    77    69
   29 |   86    68    94    90    80    91    59
   31 |   41    82   111    97    85    96   102
   07 |   58    48   145   136   737  1120   174
   09 |   41    49    45    40    90    51    39
   05 |   57    64    66    52    65    82    57

 6. PRODUCTS GENERATED:

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

  ESA0718*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
  ESA07187.ERP - Earth rotation results for week 0718 (including DUT1)
  ESA07187.SUM - This summary file

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