Subject: [IGSREPORT-205] ESA06887.SUM and ESA06897.SUM
From: J. Feltens
Date: 7 APR 1993 08:23:52

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IGS Electronic Report      7-APR-1993 08:23:52       Message Number 205
***********************************************************************

From: J. Feltens 
Subj: ESA06887.SUM and ESA06897.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.Martin-Mur, C.Garcia-Martinez

 Description of analysis for period 1993 March 14 - March 20
                                                            (week 0688)
 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: From this week on we use a new set of ground station coordinates:
             SSC (IERS) 93 C 01. This solution has been presented at the IGS
             workshop in Bern by C. Boucher and Z. Altamimi. 12 sites were re-
             commended to be kept fixed (which we also intend to fix in future):
             ALGO,FAIR,GOLD,HART,KOKB,MADR,SANT,TIDB,TROM,WETT,YAR1,YELL.

             There was a manoeuvre announced on day 076 for SV18/PRN18 (CANSPACE
             mail of 25 February 1993). Using triple differences, we could de-
             tect it at 17:45 UTC. Since we were not able to estimate the velo-
             city increment, we have excluded SV18/PRN18 from the solution of
             day 076.

 4. GROUND STATIONS, SSC (IERS) 93 C 01 (epoch 1992.6):
 _____________________________________________________________________________
 GPSweek|ALBH  FAIR  HART  KOKB  MADR  MCMU  ONSA  SANT  TIDB  WETT  |f |e |t
 0688___| 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.
 ---|---|------------------------------------------------------------|--|--|--
    |073| eFe   FFe   F-e   Fee   Fee   ee-   e--   Fe-   FFe   FFF  |12|13|25
    |074| eFe   -Fe   F-e   Fee   Fee   ee-   ee-   Fe-   FFe   FFF  |11|14|25
    |075| eFe   F-e   F-e   Fee   Fee   ee-   e-e   Fe-   FFe   FFF  |11|14|25
    |076| eFe   FFe   F-e   Fee   Fee   ee-   e--   Fe-   FFe   FFF  |12|13|25
    |077| eFe   FFe   F-e   Fee   Fee   ee-   e--   Fe-   FFe   FFF  |12|13|25
    |078| eFe   FFe   F-e   Fee   Fee   -e-   e--   Fe-   FFe   FFF  |12|12|24
    |079| eFe   FFe   F-e   Fee   Fee   ee-   e--   Fe-   FFe   FFF  |12|13|25

    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|  073   074   075   076   077   078   079
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   02 |  8.1   3.4   1.9   3.4  11.7   6.7  10.4
   03 |  3.6   7.0   7.0   5.6   1.3   5.7   6.6
   11 |  1.3   1.3   0.7   3.8   0.8   2.4   1.7
   12 |  8.4   8.0   6.7   1.4   4.8   8.9   3.1
   13 |  6.9   1.9   4.7   2.9   9.4   6.7  13.5
   14 |  1.1   2.6   4.3   1.9   2.5   4.7   4.0
   15 |  0.9   1.8   1.4   2.7   1.7   1.1   2.1
   16 |  1.8   1.6   3.9   1.8   1.9   5.2   7.6
   17 |  1.1   1.7  12.1   1.6  17.0  14.5   4.5
   18 |  3.4   1.9   4.2   0.0   0.0  60.2   2.0
   19 |  5.0   1.0   4.4   0.8   3.7   9.7   2.8
   20 |  1.1   2.3   3.4   2.2   4.0   3.5   1.5
   21 |  5.5   6.0   8.0  16.5  12.8   9.0   4.9
   22 |  2.8   4.6   4.9   1.7   3.5  10.5   3.0
   23 |  4.2   4.5   3.5   9.7   5.8   1.6   2.1
   24 |  2.5   2.2   1.3  10.2   7.9   2.2   6.1
   25 |  0.9   5.5   0.6   2.6   5.9   9.2   4.1
   26 |  1.5   2.8   8.3   1.6   2.9   2.2   2.6
   27 |  5.1   5.6   0.8   3.3  11.7   2.0   2.8
   28 |  1.0   2.8   4.1   4.4   1.7   3.7   1.1
   29 |  5.0   2.2   9.8   6.5  10.1  13.6   3.7
   01 |  3.2   1.2   1.6   3.6   1.5   1.9   5.6

  SV18/PRN18 has been excluded on day 076 because of manoeuvre.

 6. PRODUCTS GENERATED:

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

  ESA0688*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
  ESA06887.ERP - Earth rotation results for week 0688 (including DUT1R)
  ESA06887.SUM - This summary file

 End of Message
 -------------------------
 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 March 21 - March 27
                                                            (week 0689)
 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: A manoeuvre was announced on day 084 for SV25/PRN25 (CANSPACE
             mail of 12 March 1993). Using triple differences, we could de-
             tect it at 22:10 UTC, but were not able to estimate the velo-
             city increment. This manoeuvre obviously has been performed,
             when SV18 moved over the southern Indian Ocean, and we could
             see this manoeuvre only from triple difference data between
             grond stations HART and YAR1. So there might not have been data
             enough to estimate the velocity increment.

 4. GROUND STATIONS, SSC (IERS) 93 C 01 (epoch 1992.6)
 _____________________________________________________________________________
 GPSweek|ALBH  FAIR  HART  KOKB  MADR  MCMU  ONSA  SANT  TIDB  WETT  |f |e |t
 0689___| 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.
 ---|---|------------------------------------------------------------|--|--|--
    |080| eFe   FFe   F-e   Fee   Fee   ee-   e--   Fe-   FFe   FFF  |12|13|25
    |081| eFe   FFe   F-e   Fee   -ee   ee-   e--   Fe-   FFe   FFF  |11|13|24
    |082| eFe   F-e   F-e   Fee   -ee   ee-   e--   Fe-   -Fe   FFF  | 9|13|22
    |083| eFe   FFe   F-e   Fe-   -ee   ee-   e--   Fe-   -Fe   FFF  |10|12|22
    |084| eFe   FF-   F-e   Fe-   Fee   ee-   e--   Fe-   FFe   FFF  |12|11|23
    |085| eFe   FFe   F-e   Fe-   Fee   ee-   ee-   Fe-   FFe   FFF  |12|13|25
    |086| eFe   FFe   F-e   Fe-   Fe-   ee-   e--   Fe-   FFe   FFF  |12|11|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|  080   081   082   083   084   085   086
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   02 |  2.3   5.6   4.7   7.7   6.5   1.6   7.3
   03 |  2.0   6.8   5.4   8.3   5.7   4.7   7.2
   11 |  3.5   1.9   1.3   1.3   5.9   1.2   2.8
   12 |  7.8   2.7   9.3   2.9   4.0   1.9   4.1
   13 |  3.9   1.2  15.0  12.2  14.2   4.2   3.2
   14 |  1.5   1.9   2.9   1.3   1.7   3.0   1.8
   15 |  1.3   0.7   3.5   6.4   5.2   2.1   4.5
   16 |  6.4  11.0   5.1   3.5   5.3   2.5   2.6
   17 |  5.8   3.5   3.3   1.8   2.4   5.8   5.8
   18 |  9.2   3.0   4.7   3.4   3.0   2.6   1.7
   19 |  5.0   3.5   4.6   1.4   4.1   2.0   2.4
   20 |  2.1   4.4   4.9   1.8   5.0   2.7   4.7
   21 |  2.6   9.7   6.6   3.1   5.4   3.9   8.2
   22 |  3.3   5.7   5.5  10.1  14.1   3.1   7.8
   23 |  2.5   2.3   2.6   2.0   4.1   2.5   2.0
   24 |  1.5   6.4   3.4   7.2   1.5   8.7   1.5
   25 |  2.6   1.9   3.7   4.3 146.1 *****   4.0
   26 |  1.5   1.5   2.1   2.5   5.7   2.9   2.6
   27 |  5.3   1.5   2.2   4.5   3.8   4.4   2.1
   28 |  2.6   8.6   3.1   1.6   2.2   1.6   4.5
   29 |  2.7   2.8   3.7   3.5   2.6   3.8   5.5
   01 |  2.8   1.9   8.0   4.4   4.7   5.5   2.6

  The big RMS of SV25/PRN25 comes from a manoeuvre on day 084

 6. PRODUCTS GENERATED:

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

  ESA0689*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
  ESA06897.ERP - Earth rotation results for week 0689 (including DUT1R)
  ESA06897.SUM - This summary file

 End of Message