[IGSREPORT-0671] Subject
ESOC
ESOC
Thu Dec 23 08:39:24 PST 1993
IGS Electronic Report Thu Dec 23 8:39:24 PST 1993 Message Number 0671
******************************************************************************
Author: ESOC IGS-team
Subject: Subject: ESA07277.SUM
Subject: ESA07277.SUM
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ANALYSIS CENTRE: ESA/ESOC
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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 12 - Dec 18
(week 0727)
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: - To be in agreement with IGS mail 414 we are fixing KOSG now
in our IGS processing instead of estimating it. According to
IGS mail 417 its is recommended not to fix YELL - so we esti-
mating it now. This has been changed with the beginning of
week 0727. As before, we using the ITRF92 coordinates (IGS
mail 263). See corresponding changes of the status of KOSG
and YELL in the ground stations table.
To verify the influence of this change, we have also
repeated week 0726 with KOSG = 'F' and YELL = 'e'. The mean
RMS in position between the orbits thus obtained and the
original orbits with KOSG = 'e' and YELL = 'F' are in the
range of 3-5 cm and in one case 10 cm. The differences in
the ERPs are between 0.01 and 0.08 masec.
- SV-37/PRN07 has been manoeuvered on day 350. We estimated an
along track velocity increment of +43.5 mm/sec at 09:14 UTC.
- Over the days 346, 347, 348 our Yp-polar motion curve shows
a deflection from a smooth curve having its maximum on day 347
with 1.5 masec. We cannot clearly recognize the reason for
this. However, some stations in the pacific area show higher
residuals at that days than usual.
- The ESOC IGS team wishes all of you and your families a
M E R R Y C H R I S T M A S
*
* *
* o *
* O *
* O at O *
* O@@@O *
* O@@#@@O *
* O@#@O *
* @ *
|
(IIIIIIIII)
IIIIIIIII
IIIIIIIII
IIIIIIIII
IIIIIIIII
IIIIIIIII
\\\\\\\\\\\|///////////
\\\\\\\\\\|//////////
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and a H A P P Y N E W Y E A R 1 9 9 4
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 GOLD KOKB MADR PAMA SANT TROM YAR1 |f |e |t
0727___| FAIR HART KOSG MASP PERT TAIW USUD YELL |i |s |o
|DAY| FORT KIRU KOUR MATE RCM5 TIDB WETT |x.|t.|t.
---|---|------------------------------------------------|--|--|--
|346| FFe FFe FFe Fee eee FeF FeF Fe |12|11|23
|347| FFe FFe FFe Fee eee FeF FeF Fe |12|11|23
|348| FFe FFe FFe Fee eee FeF FeF Fe |12|11|23
|349| FFe FFe FFe Fee eee FeF FeF Fe |12|11|23
|350| FFe FFe FFe Fee eee FeF FeF Fe |12|11|23
|351| FFe FFe FFe Fee eee FeF FeF Fe |12|11|23
|352| FFe FFe FFe Fee eee FeF FeF Fe |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 <CENTIMETER>
\DAY| 346 347 348 349 350 351 352
\ |
\ |
SAT\|
----|-------------------------------------------
02 | 55 48 62 48 52 68 55
03 | 91 42 66 73 38 61 141
12 | 60 64 85 61 84 102 185
13 | 73 64 44 51 51 61 85
14 | 29 89 124 33 49 51 171
15 | 75 119 159 52 47 64 125
16 | 54 58 46 25 49 98 58
17 | 63 43 39 67 60 57 98
18 | 39 46 52 46 66 62 73
19 | 65 75 76 69 63 67 116
20 | 93 113 78 75 70 54 53
21 | 29 53 81 80 42 81 100
22 | 72 49 190 82 122 76 121
23 | 71 45 27 82 85 83 194
24 | 63 92 52 61 60 77 87
25 | 84 93 96 60 50 61 79
26 | 36 35 27 22 21 62 111
27 | 66 83 54 101 88 80 117
28 | 57 115 152 56 78 95 108
01 | 74 44 100 48 68 59 70
29 | 74 39 51 39 61 83 170
31 | 123 60 98 105 147 88 284
07 | 84 63 80 58 ----- ----- 120
09 | 106 69 120 77 106 49 242
05 | 68 38 200 56 75 68 90
04 | 78 81 153 78 88 107 142
6. PRODUCTS GENERATED:
The following products are generated and stored in CDDIS at NASA/GSFC:
ESA0727*.EPH - Precise GPS orbits and clocks, * = day of the week (0-6)
ESA07277.ERP - Earth rotation results for week 0727 (including DUT1R)
ESA07277.SUM - This summary file
End of Message
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