Subject: [IGSREPORT-139] ESA/ESOC Analysis Report (week 682)
From: Joachim Feltens
Date: 15 FEB 1993 00:00:00

From:     Joachim Feltens 
Subject:  ESA/ESOC Analysis Report (week 682)         
---------------------------------------------

 -------------------------
 ANALYSIS CENTRE: ESA/ESOC
 -------------------------

 OUTLINE OF THE ESTIMATION OF GPS-ORBITS AND EARTH ROTATION PARAMETERS
 AT THE ESOC PROCESSING CENTER FOR IGS

 J.M.Dow, J.Feltens, T.Martin Mur, C.Garcia-Martinez

 Description of analysis for period 1993 January 31 - February 06 (week 682)

 1. SOFTWARE USED:   GPSOBS/BAHN5

 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

 3. REMARKS

  We had problems with the IGS data evaluation of week 682. Especially on day 31
  (31 JAN) we had bad convergence,  in particular for PRNs 12,13,and 18.  But no
  manoeuvre could be detected, and finally  the results  are consistent with the
  results of the other days.

 4. GROUND STATIONS, IGS Mail No. 90, Boucher and Altamimi (if being
                     estimated, one position (X,Y,Z) every day):
  ______________________________________________________________________________
  GPS week|ALBH  FAIR  HART  KOKB  MADR  MCMU  PAMA  STJO  USUD  YELL  |f |e |t
  682 .___| ALGO  GOLD  HOBA  KOSG  MASP  METS  RCM2  TIDB  WETT       |i |s |o
      |DAY|  DRAO  GRAZ  JPLM  KOUR  MATE  ONSA  SANT  TROM  YAR1      |x.|t.|t.
  ----|---|------------------------------------------------------------|--|--|--
      |031| eFe   FFe   Fee   eee   FeF   -eF   e-F   eee   eFF   F    |11|15|26
      |032| eFe   -Fe   Fee   eee   FeF   eeF   e-F   eee   eFF   F    |10|16|26
      |033| eFe   FFe   F-e   -ee   FeF   -eF   e-F   e-e   eFF   F    |11|12|23
      |034| eFe   FFe   F-e   -ee   -eF   eeF   e--   e-e   eFF   F    | 9|13|22
      |035| eFe   FFe   F-e   -ee   FeF   -eF   e-F   ee-   eFF   F    |23|11|12
      |036| eFe   FFe   F-e   -ee   FeF   -eF   e-F   eee   eFF   F    |24|11|13
      |037| eFe   F-e   F-e   -ee   -eF   eeF   e-F   e-e   eFF   F    |22| 9|13

       with: "F" ... coordinates of ground station kept fixed,
             "e" ... coordinates of ground station estimated,
             "-" ... station not included on that day.

 5. ORBIT FIT MINUS EXTRAPOLATION FROM PREVIOUS DAY, RMS IN <METER>

  \DAY|  031   032   033   034   035   036   037
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   02 |  4.1   3.6   2.1   7.2   4.7   3.7   1.2
   03 |  1.0   3.6   4.3   2.9   5.1   4.9   1.5
   11 |  1.2   6.0   3.6   8.6   4.8   9.6  14.6
   12 |  2.1  11.8   6.5  11.2   4.2  12.9  10.8
   13 |  8.1   3.7  10.4   8.2  11.8   5.0   6.9
   14 |  5.7   2.3   6.4  12.5   2.1   8.1   3.4
   15 |  5.0   5.9   3.6   3.1   8.3   3.7   5.6
   16 |  3.7   2.5   6.7   3.5   6.9   6.7   3.5
   17 |  2.0   3.1   2.4   2.4   5.3   5.6   5.4
   18 |  3.4   9.0   2.1   4.0   1.5   6.7   2.1
   19 |  4.5  18.5   1.8   4.7   8.8  10.0  11.1
   20 |  5.1   2.8   3.0   8.8   1.9   3.3   1.9
   21 |  0.8   3.9   2.0   5.2   3.4   2.0   4.2
   22 |  0.0   0.0   0.0   0.0   0.0   0.0   0.0
   23 |  9.4  13.0   7.9   6.9   3.1   3.9  15.7
   24 |  3.9   5.8   2.8   7.8   5.7   2.5   3.5
   25 |  5.0   1.4  11.6  11.4   3.2   3.2   3.0
   26 |  3.0   1.2   4.2  12.1   6.3   8.3   6.6
   27 |  1.3   4.4   2.0   1.6   4.4   6.3   7.7
   28 |  2.3   3.3   3.0  13.0   4.0   1.4  15.3
   29 |  8.0   3.1   4.1   8.7   3.0   3.8   5.6
   01 |  8.0   1.1  10.5   4.3  14.6   4.7   5.7

 6. PRODUCTS GENERATED

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

  ESA0682*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
  ESA06827.ERP - Earth rotation results for week 0682 (including DUT1R)
  ESA06827.SUM - This summary file

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