Subject: [IGSREPORT-0699] ESA07297.SUM
From: ESOC IGS-team
Date: Wed, 12 Jan 1994 15:20:48 PST

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IGS Electronic Report    Wed Jan 12 15:20:48 PST 1994      Message Number 0699
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Author: ESOC IGS-team
Subject: ESA07297.SUM

Subject: ESA07297.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, T.Martin-Mur, J.Feltens, C.Garcia-Martinez

 Description of analysis for period 1993 Dec 26 - Jan 01
                                                        (week 0729)
 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

  - From this week we will use the ITRF92 station coordinates from
    IGS Mails 421 and 430. Antenna heights were obtained from the
    file localtie.tab from sideshow.jpl.nasa.gov /igscb/station/tie.
    We are now fixing the coordinates of the 13 stations included in the
    IGS Mail 430.
    We have run the GPS week 0729 with the old and the new coordinates
    and the statistics for the difference between the erps calculated
    with the new coordinates and the erps calculated with the old are:

     erp    mean diff. (itrf92 - itrf91)  standard deviation
     ----   ----------------------------  ------------------
      xp            -0.75 mas                  0.08 mas
      yp            -0.12 mas                  0.09 mas
     lodr           0.040 ms/day              0.041 ms/day

  - We are also now able to provide the correlations between erp
    parameters and they will be included in the erp file.

 3. REMARKS: none

 4. GROUND STATIONS: Altamimi and Boucher, IGS Mails 421 and 430,
                     ITRF92 at 1994.0 and localtie.tab.
 _________________________________________________________________
 GPSweek|ALGO  GOLD  KOKB  MADR  PAMA  SANT  TROM  YAR1  |f |e |t
 0729___| FAIR  HART  KOSG  MASP  PERT  TAIW  USUD  YELL |i |s |o
    |DAY|  FORT  KIRU  KOUR  MATE  RCM5  TIDB  WETT      |x.|t.|t.
 ---|---|------------------------------------------------|--|--|--
    |360| FF-   FFe   FFe   Fee   eee   FeF   Fe-   FF   |12| 9|21
    |361| FFe   FFe   FFe   Fee   eee   FeF   Fe-   FF   |12|10|22
    |362| FFe   FFe   FFe   Fee   eee   FeF   Fe-   FF   |12|10|22
    |363| FFe   FFe   FFe   Fee   eee   FeF   Fe-   FF   |12|10|22
    |364| FFe   FFe   FFe   Fee   eee   FeF   FeF   FF   |13|10|23
    |365| FFe   FFe   FFe   Fee   eee   FeF   FeF   FF   |13|10|23
    |001| FFe   FFe   FFe   Fee   eee   FeF   FeF   FF   |13|10|23

    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|  360   361   362   363   364   365   001
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   02 |   47    60   116    49    76    61    72
   03 |   47   105    43    32    50    37    44
   12 |   98    74    47    44    39    93    54
   13 |   63    56    66    54    51    44    78
   14 |   58    50    25    55    39    51    21
   15 |  106   123   124    72   127   160   153
   16 |   42    99    73   115    83    47    74
   17 |   60   127    50    59    83    56   103
   18 |   85    39    30    36    31    61    25
   19 |   55    55    44    49    40    45    52
   20 |   66   108    61    45    77    65    45
   21 |   34    34    44    34    34    38    37
   22 |   61    94    92    80    78   109   115
   23 |  155    37    93    75    39   108    33
   24 |  106   123   129   119   105   146   163
   25 |   92    52    50    43    66    50    35
   26 |   62    39    69    30    68    28    62
   27 |   44    57    46    53    69    49    71
   28 |   43    49    37    51    41    43    36
   01 |  147   122    20    20    35    21    43
   29 |  144    71    56    57    85    89    60
   31 |   62    45    47    99    49    67    71
   07 |   43    90    74    57   109    56    93
   09 |  194   123    67    48    98   100    72
   05 |   76    79    75    77    67    74    94
   04 |   78   125   121    85   189   109   270

 6. PRODUCTS GENERATED:

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

  ESA0729*.EPH - Precise GPS orbits and clocks, * = day of the week (0-6)
  ESA07297.ERP - Earth rotation results for week 0729 (including DUT1R)
  ESA07297.SUM - This summary file

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