Subject: [IGSREPORT-176] ESA/ESOC Analysis Report (week 0686)
From: J. Feltens
Date: 18 MAR 1993 17:06:48

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IGS Electronic Report     18-MAR-1993 17:06:48       Message Number 176
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From:	J. Feltens
Subj:	ESA/ESOC Analysis Report (week 0686)
--------------------------------------------

 -------------------------
 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 February  28 - March     06
                                                                   (week 0686)
 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

 3. REMARKS: On day 064 (05 March) we tried to estimate a manoeuvre for
             spacecraft SV-14/PRN14. According to our results the mano-
             euvre happened around 16:45 UTC. Contrary to experiences
             of former manoeuvers, in this case we were not able to
             estimate amount and direction of the velocity increment
             exactly, and on the following day 065 SV-14 seems to be
             worse too. The manouvre for SV-14 was announced in CAN-
             space mail of 17 February 1993.
                  On day 065 (and obviously also on the following days
             of week 0687) ground station DRAO has problems with the
             receiver clock (IGS Mail 217). So we excluded DRAO from
             our processing of day 065.

 4. GROUND STATIONS, IGS Mail No. 90, Boucher and Altamimi (if being
                     estimated, one position (X,Y,Z) per day):
 _____________________________________________________________________________
 GPSweek|ALBH  FAIR  HART  KOKB  MADR  MCMU  ONSA  SANT  TIDB  WETT  |f |e |t
 0686___| ALGO  GOLD  HOBA  KOSG  MASP  METS  PAMA  STJO  TROM  YAR1 |i |s |o
    |DAY|  DRAO  GRAZ  JPLM  KOUR  MATE  NYAL  RCM2  TAIW  USUD  YELL|x.|t.|t.
 ---|---|------------------------------------------------------------|--|--|--
    |059| eFe   FFe   e-e   eee   Fe-   ee-   F--   ee-   eee   F-F  | 7|16|23
    |060| eFe   FFe   e-e   eee   Fe-   ee-   F--   ee-   eee   F-F  | 7|16|23
    |061| eFe   -Fe   e-e   eee   FeF   -e-   F--   ee-   eee   FeF  | 7|16|23
    |062| eFe   -Fe   -ee   eee   FeF   -e-   F--   ee-   eee   FeF  | 7|16|23
    |063| eFe   -Fe   -ee   eee   FeF   -e-   F--   ee-   ee-   F-F  | 7|14|21
    |064| eFe   -Fe   e-e   eee   FeF   -e-   F--   ee-   eee   FeF  | 7|16|23
    |065| eF-   -Fe   e-e   eee   FeF   ee-   F--   ee-   eee   FeF  | 7|16|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 <METER>

  \DAY|  059   060   061   062   063   064   065
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   02 |  2.2   3.4   1.5   3.1   3.2   2.8  10.6
   03 |  2.1   7.8   7.6   9.0  11.8   2.2   2.2
   11 |  2.8   1.5   2.5   2.3   6.1   4.3  10.7
   12 | 10.3   4.3   8.2   4.9   8.6   2.9   4.9
   13 | 29.0   2.6   4.9  15.5  15.4  21.4  47.5
   14 |  4.2   2.4   4.5   1.6   2.1  50.3 *****
   15 |  2.0   0.9   2.8   2.8   2.5   3.5  27.3
   16 |  4.0  11.2   1.9   2.1   1.4   1.9   2.3
   17 |  3.0   3.9   6.2   3.6  10.3   2.7   4.7
   18 | 14.3  16.3   7.3   5.8   5.2   1.4   2.2
   19 |  6.6   4.2   2.7   8.9   1.9   3.1   5.8
   20 |  4.8   2.7   1.8   5.6   4.2   5.3   8.2
   21 |  3.7   3.3   2.0   4.2   4.0   2.2   5.4
   22 |  0.0   5.7  13.1  11.9  30.4  81.1   8.8
   23 |  8.8   7.8   7.7   4.8   5.2   3.2   4.5
   24 |  5.7  10.8   6.4   2.2   4.5   1.1  12.5
   25 |  8.4   5.3   3.4   2.6   7.0   4.3  14.1
   26 | 14.4  11.2   5.4   9.1   1.9   6.1  10.9
   27 |  4.3   3.5   0.9   1.5   4.1   5.5  16.3
   28 |  2.1   6.4   3.8   5.1   4.5   4.7   9.9
   29 | 17.3   4.2   5.2   5.8  11.2  11.8  12.8
   01 |  1.5   4.0   5.9   2.8   7.6   5.6   5.2

 6. PRODUCTS GENERATED:

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

  ESA0686*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
  ESA06867.ERP - Earth rotation results for week 0686 (including DUT1R)
  ESA06867.SUM - This summary file

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