[IGSREPORT-547] ESA07177.SUM

[C.Garcia]

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IGS Electronic Report     15-OCT-1993 18:01:59       Message Number 547
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From: C.Garcia
Subject: ESA07177.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 03 - Oct 09
                                                        (week 0717)
 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:  - Satellite SV09/PRN13 has been excluded on day
                276. On day 280, the orbit is affected by the
                lack of double differences during the first
                half of the day. This satellite was declared
                unusable from 12:00 DOY 273 for up to 10 days
                due to maintenance. See CANSPACE mail of 17 Sep 93.

              - On days 277 and 278, high residuals for satellite
                SV-32/PRN01. Bad comparisons with extrapolated orbits
                on days 277, 278 and 279. The satellite was excluded
                from the the estimation of the ERPs on day 278.


 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
 0717___| FAIR  KIRU  MADR  MCMU  TIDB  WETT       |i |s |o
    |DAY|  GOLD  KOKB  MASP  PERT  TROM  YAR1      |x.|t.|t.
 ---|---|------------------------------------------|--|--|--
    |276| FFF   FeF   eFe   eee   FFF   eFF   F    |12| 7|19
    |277| FFF   FeF   eFe   eee   FFF   eFF   F    |12| 7|19
    |278| FFF   FeF   eFe   eee   FFF   eFF   F    |12| 7|19
    |279| FFF   FeF   eFe   eee   FFF   eFF   F    |12| 7|19
    |280| FFF   FeF   eFe   e-e   FFF   eFF   F    |12| 6|18
    |281| FFF   FeF   eFe   e-e   FFF   eFF   F    |12| 6|18
    |282| 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|  276   277   278   279   280   281   282
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   02 |  130   105    55    83    67    60    45
   03 |  112    43    22   108    60    29    36
   12 |   33    43    33    50    62    29    35
   13 |   --    --    57    31   147    67   117
   14 |   48    57    64   151    23    36    35
   15 |   38    53   258    45    47    51    28
   16 |   56   168    99    46    52    47   162
   17 |   37    48    45   126    41    29    42
   18 |   92    79    62    82    76    65    79
   19 |   40   107    44    86    73    78   142
   20 |   80    49    34    75    51    63    60
   21 |   86   142    69   170   105    54    58
   22 |   45    75    38    50    44    49    56
   23 |   78    45    73   114    95    31    46
   24 |  190   101    22    40    32    69   151
   25 |   77    53    73    46    44    33   147
   26 |   74    62    72    72    71    58    85
   27 |   87    94    52    63    56    87   103
   28 |   40   117    90    47   121   107    43
   01 |  115   171   466   205    65   120    90
   29 |  101   116    93    98    84    97    97
   31 |   53   105    67    65    73    67   133
   07 |  176    58    58   112    41   114    65
   09 |   40    59    47    62    68    34    56
   05 |  119    68   137    83    57    55    86

 6. PRODUCTS GENERATED:

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

  ESA0717*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
  ESA07177.ERP - Earth rotation results for week 0717 (including DUT1)
  ESA07177.SUM - This summary file

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