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SLR-Report No.1755

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Date:2002-05-07 10:45:00
Sender:Ron Noomen, DEOS, Delft, The Netherlands <Ron Noomen <Ron.Noomen@lr.tudelft.nl>>
Subject:[SLR-Report] No. 1755: Delft QL Report, May 07, 2002
Author:Ron Noomen, DEOS, Delft, The Netherlands
Content:********************************************************************************
SLR Electronic Report 2002-05-07 10:45:00 UTC Message No. 1755
********************************************************************************

Author: Ron Noomen, DEOS, Delft, The Netherlands
Subject: Delft QL Report, May 07, 2002


WEGENER-2 IERS

REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER
DELFT UNIVERSITY OF TECHNOLOGY
FACULTY OF AEROSPACE ENGINEERING
THE NETHERLANDS


May 7, 2002


This is a weekly report, presenting the results of a continuing analysis of the
most recent global LAGEOS-1 and LAGEOS-2 quick-look laser ranging data. The
report consists of (A) a pass summary, (B) an overview of the analysis results,
detailed statistics of the analysed measurements, and an accumulative pass
overview and (C) the earth rotation parameter solutions submitted to IERS. The
report is based on all quick-look data as received until Mon, May 6, 2002.
Questions and comments should be addressed to:

K.F. Wakker
Delft University of Technology
Faculty of Aerospace Engineering
Delft Institute for Earth-Oriented Space Research
Kluyverweg 1
NL-2629 HS Delft
The Netherlands

Telephone: +31-(0)15-2782065/2785377
Telefax : +31-(0)15-2785322
E-mail : ron.noomen@deos.tudelft.nl


A. PASS SUMMARY

The table below gives an overview of the ranging data both on LAGEOS-1 and
LAGEOS-2, as received by the Quick-Look Data Analysis Center (QLDAC) on Mon,
May 6, 2002. All data were obtained through the NASA Crustal Dynamics Data
Information system (CDDIS) and the Eurolas Data Center (EDC) in Germany.
The data are unscreened and may span more than a week due to late reporting
by the stations.

------------------------------------------------------------------------------
Station System/Location Period No. of Passes
ID LAGEOS-1 LAGEOS-2
------------------------------------------------------------------------------
1873 Simeiz, Crimea, Ukraine 020429 - 020506 4 5
1884 Riga, Latvia 020501 - 020505 5 4
1893 Kazivili, Crimea, Ukraine 020504 - 020504 - 1
7080 McDonald Obs., Fort Davis, TX 020429 - 020506 6 5
7090 Yarragadee, Australia 020429 - 020504 13 7
7105 Greenbelt, Maryland 020430 - 020506 12 8
7110 Monument Peak, California 020429 - 020506 10 13
7124 Papeete, Tahiti 020503 - 020503 - 1
7210 Haleakala Obs., Maui, Hawaii 020502 - 020502 - 1
7237 Changchun, China 020429 - 020505 8 10
7403 Arequipa, Peru (TLRS-3) 020430 - 020506 6 3
7501 Hartebeesthoek, SA (MOB-6) 020429 - 020503 4 1
7806 Metsahovi, Finland 020429 - 020429 - 1
7810 Zimmerwald, Switzerland 020430 - 020501 5 3
7824 San Fernando, Spain 020429 - 020503 2 2
7832 Riyad, Saudi Arabia 020429 - 020505 4 6
7835 Grasse, France 020429 - 020506 3 5
7839 Graz, Austria 020426 - 020504 13 12
7840 Herstmonceux, United Kingdom 020429 - 020505 10 7
7848 Ajaccio, Corsica (FTLRS) 020504 - 020506 3 3
7849 Mount Stromlo, Australia 020430 - 020506 14 9
7941 Matera, Italy (MLRO) 020423 - 020501 2 4
8834 Wettzell, Germany 020430 - 020501 2 2
------ ------ --- ---
TOTAL 020423 - 020506 126 113
------------------------------------------------------------------------------


B. ANALYSIS RESULTS

The analysis is based on two orbit solutions using global quick-look normal
points that cover a period of 10 days which are computed simultaneously. This
week´s data interval runs from Thu, Apr 25, 2002 to Sun, May 5, 2002. The
measurement and dynamic models used in this analysis are close to the IERS
Standard. The overall model is referred to as QLDACMOD9. The details of this
model can be obtained on request. The terrestrial reference frame is provided
by a special version of the SSC(DUT) 93L05 station coordinates solution.

The general statistics and results of this week´s analysis are thus:

-----------------------------------------------------------------------
Satellite LAGEOS-1 LAGEOS-2
Number of Stations 22 24
Number of Passes 166/163 148/148
Number of Normal Points 1657/1604 1796/1777
RMS of Fit (mm) 28 29
-----------------------------------------------------------------------


Residual statistics per station. The header line for each station shows
the station id, its name, whether the position is solved for or not and the
measurement accuracy in mm. Rejected observations are not used for the
calculation of the rms-of-fit, the biases or the scatter. The latter holds
w.r.t. the residual trend line described by the bias estimates. Uncertainties
are 3-sigma values.

--------------------------------------------------------------------------------
Date Time Sat. Obs. RMS Range Bias Time Bias Scatter
tot/rej (mm) (mm) (us) (mm)
--------------------------------------------------------------------------------
Station 1868 (Komsomolsk-na-Amure) (Position fixed, acc. 200 mm)
1868 25 Apr 02 16:29 LAG1 12 0 28 0 +- 175 1 +- 141 28

Station 1873 (Simeiz) (Position solved, acc. 200 mm)
1873 29 Apr 02 18:19 LAG2 4 0 94 -560 +-4827 252 +-2547 34
1873 29 Apr 02 22:10 LAG2 8 2 37 -23 +- 483 27 +- 436 34
1873 30 Apr 02 20:50 LAG1 7 0 35 31 +- 357 -23 +- 438 27
1873 2 May 02 20:35 LAG2 5 0 60 148 +-1101 -160 +- 978 32
1873 2 May 02 21:35 LAG1 5 0 25 11 +- 404 8 +- 683 24

Station 1884 (Riga) (Position fixed, acc. 100 mm)
1884 26 Apr 02 19:37 LAG2 8 0 13 -10 +- 128 22 +- 185 2
1884 26 Apr 02 22:28 LAG1 16 0 11 0 +- 78 -8 +- 60 5
1884 26 Apr 02 23:27 LAG2 10 0 57 -56 +- 136 0 +- 152 3
1884 28 Apr 02 19:44 LAG2 10 0 34 -14 +- 100 37 +- 133 3
1884 28 Apr 02 23:20 LAG1 13 0 12 5 +- 87 -7 +- 71 4
1884 28 Apr 02 23:49 LAG2 8 0 71 -74 +- 117 25 +- 206 9
1884 1 May 02 22:05 LAG2 12 0 21 -16 +- 90 13 +- 107 9
1884 1 May 02 22:49 LAG1 10 0 27 19 +- 102 -14 +- 112 5
1884 2 May 02 21:33 LAG1 9 0 53 77 +- 170 -37 +- 168 4
1884 3 May 02 22:13 LAG2 12 0 36 -32 +- 98 6 +- 98 8
1884 3 May 02 23:47 LAG1 11 0 30 1 +- 161 -19 +- 102 8
1884 4 May 02 20:27 LAG2 8 0 19 6 +- 111 27 +- 157 3
1884 4 May 02 22:13 LAG1 15 0 25 25 +- 82 -8 +- 65 5

Station 1893 (Kazivili) (Position fixed, acc. 100 mm)
1893 4 May 02 20:31 LAG2 6 0 82 -2 +- 368 -2 +- 331 82

Station 7080 (McDonald Obs.) (Position fixed, acc. 20 mm)
7080 28 Apr 02 08:43 LAG1 3 0 11 12 +- 74 -7 +- 253 0
7080 28 Apr 02 09:16 LAG2 9 0 24 -23 +- 41 0 +- 49 4
7080 29 Apr 02 17:33 LAG1 7 0 2 -3 +- 130 2 +- 74 1
7080 30 Apr 02 06:06 LAG1 6 0 73 91 +- 178 -11 +- 114 3
7080 30 Apr 02 09:20 LAG1 11 0 16 0 +- 32 -15 +- 31 4
7080 30 Apr 02 09:43 LAG2 4 0 6 -33 +- 292 23 +- 219 1
7080 1 May 02 03:07 LAG2 14 0 12 -12 +- 35 -2 +- 36 3
7080 1 May 02 07:41 LAG2 13 0 30 16 +- 56 10 +- 39 2
7080 1 May 02 08:13 LAG1 8 0 20 14 +- 101 3 +- 60 2
7080 4 May 02 17:57 LAG1 3 0 19 110 +-1597 -36 +- 640 0
7080 4 May 02 19:37 LAG2 3 0 8 4 +- 114 -16 +- 424 0

Station 7090 (Yarragadee) (Position fixed, acc. 10 mm)
7090 25 Apr 02 10:35 LAG1 8 0 33 -34 +- 35 18 +- 65 2
7090 25 Apr 02 13:41 LAG1 5 0 54 -47 +- 74 5 +- 45 0
7090 26 Apr 02 07:37 LAG2 5 0 24 -25 +- 706 0 +- 326 3
7090 26 Apr 02 09:29 LAG1 6 0 10 -10 +- 120 17 +- 110 3
7090 27 Apr 02 07:59 LAG1 5 0 5 1 +- 109 3 +- 125 5
7090 28 Apr 02 13:07 LAG1 16 0 35 -35 +- 24 -1 +- 17 3
7090 28 Apr 02 16:37 LAG1 9 0 13 15 +- 37 4 +- 21 2
7090 28 Apr 02 17:11 LAG2 10 0 28 -30 +- 35 5 +- 61 1
7090 29 Apr 02 08:43 LAG1 8 1 17 -19 +- 40 10 +- 50 2
7090 29 Apr 02 12:11 LAG1 7 0 30 -39 +- 98 8 +- 85 0
7090 29 Apr 02 15:19 LAG1 17 0 13 -6 +- 24 8 +- 14 2
7090 29 Apr 02 18:55 LAG2 24 0 24 -23 +- 19 -7 +- 12 4
7090 30 Apr 02 07:25 LAG1 5 0 20 -16 +- 123 2 +- 115 6
7090 30 Apr 02 07:45 LAG2 8 0 24 16 +- 70 6 +- 56 3
7090 30 Apr 02 10:47 LAG1 5 0 42 -45 +- 49 -15 +- 147 0
7090 30 Apr 02 13:53 LAG1 14 0 27 -25 +- 25 -7 +- 16 3
7090 30 Apr 02 17:17 LAG2 14 0 34 -34 +- 25 -3 +- 34 1
7090 30 Apr 02 17:43 LAG1 12 0 10 17 +- 57 -7 +- 41 2
7090 30 Apr 02 21:29 LAG2 14 0 28 -10 +- 57 -11 +- 33 1
7090 1 May 02 01:29 LAG2 18 0 20 -20 +- 22 2 +- 21 4
7090 2 May 02 17:29 LAG2 17 0 14 -3 +- 24 -12 +- 23 1
7090 2 May 02 18:21 LAG1 7 0 18 6 +- 59 -19 +- 94 2
7090 3 May 02 10:27 LAG1 3 0 13 -24 +- 464 11 +- 492 0
7090 3 May 02 13:17 LAG1 14 0 22 -23 +- 26 1 +- 12 3
7090 3 May 02 16:45 LAG1 9 0 19 -9 +- 140 -14 +- 69 0
7090 4 May 02 09:07 LAG1 5 0 8 -12 +- 99 20 +- 132 4
7090 4 May 02 12:03 LAG1 7 0 61 -53 +- 52 7 +- 40 2
7090 4 May 02 15:23 LAG1 19 0 17 -14 +- 22 -2 +- 11 7
7090 4 May 02 17:33 LAG2 17 0 43 -17 +- 23 -23 +- 15 5

Station 7105 (Greenbelt) (Position fixed, acc. 10 mm)
7105 25 Apr 02 02:45 LAG2 16 0 10 8 +- 24 3 +- 21 2
7105 25 Apr 02 05:17 LAG1 11 0 16 -13 +- 29 -4 +- 13 5
7105 25 Apr 02 20:45 LAG2 12 0 30 29 +- 31 2 +- 33 3
7105 26 Apr 02 00:41 LAG2 20 0 5 -5 +- 23 2 +- 15 2
7105 26 Apr 02 03:55 LAG1 19 0 22 15 +- 22 11 +- 17 1
7105 26 Apr 02 04:49 LAG2 26 0 8 -5 +- 19 4 +- 12 2
7105 26 Apr 02 07:25 LAG1 22 0 18 -16 +- 20 4 +- 10 5
7105 26 Apr 02 22:43 LAG2 22 0 3 0 +- 21 0 +- 14 2
7105 27 Apr 02 02:51 LAG2 13 0 7 1 +- 26 4 +- 17 2
7105 27 Apr 02 06:07 LAG1 15 0 12 -10 +- 26 -7 +- 17 2
7105 27 Apr 02 07:05 LAG2 10 0 28 -26 +- 43 2 +- 47 1
7105 27 Apr 02 09:49 LAG1 10 0 12 20 +- 53 -11 +- 41 1
7105 29 Apr 02 03:03 LAG2 12 0 25 -2 +- 29 16 +- 19 6
7105 29 Apr 02 03:43 LAG1 6 0 51 57 +- 156 -5 +- 125 0
7105 29 Apr 02 06:53 LAG1 11 0 22 -25 +- 51 -2 +- 31 2
7105 29 Apr 02 07:29 LAG2 15 0 32 -47 +- 40 18 +- 30 4
7105 30 Apr 02 12:35 LAG1 6 0 19 19 +- 45 -29 +- 79 4
7105 30 Apr 02 19:29 LAG2 5 0 7 -4 +- 111 14 +- 151 3
7105 1 May 02 18:09 LAG1 10 0 39 -38 +- 31 0 +- 40 4
7105 1 May 02 21:43 LAG2 2 0 3 -57 +-3775 37 +-2611 0
7105 3 May 02 07:55 LAG2 11 0 44 -49 +- 43 7 +- 50 2
7105 3 May 02 08:29 LAG1 19 0 36 -15 +- 22 -19 +- 14 4
7105 3 May 02 11:59 LAG1 5 0 39 28 +- 59 -25 +- 112 1
7105 4 May 02 01:35 LAG2 18 0 30 -3 +- 22 22 +- 16 3
7105 4 May 02 03:33 LAG1 14 0 17 9 +- 25 9 +- 16 2
7105 4 May 02 05:43 LAG2 20 0 22 -14 +- 21 9 +- 12 4
7105 4 May 02 07:05 LAG1 22 0 9 -3 +- 20 -4 +- 11 1
7105 4 May 02 10:45 LAG1 7 0 17 21 +- 44 -17 +- 64 1
7105 4 May 02 17:47 LAG1 9 0 20 -18 +- 117 0 +- 65 1

Station 7110 (Monument Peak) (Position fixed, acc. 10 mm)
7110 25 Apr 02 10:59 LAG2 9 0 39 -14 +- 83 -16 +- 52 2
7110 25 Apr 02 12:37 LAG1 9 0 18 -15 +- 32 15 +- 47 3
7110 28 Apr 02 19:01 LAG1 4 0 29 -68 +- 279 24 +- 168 1
7110 29 Apr 02 02:52 LAG2 17 0 22 -12 +- 32 -8 +- 24 2
7110 29 Apr 02 06:57 LAG2 3 0 8 -62 +-1749 -25 +- 837 1
7110 29 Apr 02 07:03 LAG1 23 0 22 -8 +- 20 12 +- 11 2
7110 29 Apr 02 10:52 LAG1 12 0 23 -13 +- 51 21 +- 31 2
7110 29 Apr 02 11:15 LAG2 15 0 6 5 +- 30 -7 +- 32 1
7110 30 Apr 02 00:47 LAG2 17 0 52 -21 +- 25 -22 +- 13 6
7110 30 Apr 02 05:09 LAG2 10 0 19 -20 +- 36 -5 +- 55 0
7110 30 Apr 02 05:51 LAG1 9 0 26 23 +- 33 7 +- 35 1
7110 30 Apr 02 09:09 LAG2 2 0 6 -100 +-3783 -44 +-1791 0
7110 30 Apr 02 09:15 LAG1 13 0 16 -18 +- 30 -8 +- 18 2
7110 30 Apr 02 23:15 LAG2 8 0 54 -40 +- 116 -9 +- 75 1
7110 3 May 02 03:11 LAG2 20 0 34 -31 +- 21 -12 +- 16 5
7110 3 May 02 05:25 LAG1 4 0 18 -23 +- 76 25 +- 263 0
7110 3 May 02 07:27 LAG2 20 0 9 -9 +- 21 1 +- 12 2
7110 3 May 02 08:38 LAG1 14 0 15 -12 +- 25 4 +- 10 2
7110 3 May 02 11:45 LAG2 3 1 4 17 +- 425 109 +-2219 0
7110 3 May 02 12:15 LAG1 8 0 5 4 +- 34 -2 +- 39 2
7110 4 May 02 05:39 LAG2 21 0 28 -25 +- 23 -3 +- 18 4
7110 4 May 02 07:17 LAG1 23 0 31 -24 +- 20 13 +- 11 5
7110 4 May 02 09:35 LAG2 13 0 6 -2 +- 47 -6 +- 36 1
7110 4 May 02 10:51 LAG1 10 0 8 9 +- 36 3 +- 25 2

Station 7124 (Papeete) (Position fixed, acc. 10 mm)
7124 3 May 02 12:07 LAG2 9 0 40 -40 +- 42 1 +- 48 1

Station 7210 (Haleakala Obs.) (Position fixed, acc. 20 mm)
7210 25 Apr 02 06:05 LAG2 6 0 3 -6 +- 181 -9 +- 194 1
7210 25 Apr 02 09:16 LAG1 20 0 27 -19 +- 24 12 +- 15 6
7210 25 Apr 02 10:23 LAG2 3 0 49 77 +-2410 13 +-1206 1
7210 26 Apr 02 04:15 LAG2 11 0 10 3 +- 42 -11 +- 48 5
7210 26 Apr 02 08:30 LAG2 16 0 17 14 +- 27 -6 +- 36 5
7210 27 Apr 02 06:29 LAG2 10 0 28 26 +- 34 -19 +- 48 5
7210 27 Apr 02 10:02 LAG1 14 0 12 -12 +- 39 -2 +- 22 6
7210 27 Apr 02 10:43 LAG2 5 0 47 23 +- 441 -13 +- 258 1
7210 2 May 02 09:17 LAG2 6 0 45 24 +- 126 -18 +- 113 9

Station 7237 (Changchun) (Position fixed, acc. 50 mm)
7237 29 Apr 02 14:31 LAG2 10 0 35 1 +- 70 -16 +- 50 27
7237 29 Apr 02 18:03 LAG1 11 0 55 -19 +- 61 21 +- 30 6
7237 29 Apr 02 18:27 LAG2 10 0 22 9 +- 58 14 +- 58 10
7237 30 Apr 02 12:23 LAG2 18 0 55 -9 +- 42 -33 +- 27 7
7237 30 Apr 02 13:20 LAG1 3 0 57 -56 +- 102 -19 +- 615 5
7237 30 Apr 02 16:27 LAG2 17 0 17 12 +- 43 8 +- 34 10
7237 30 Apr 02 17:07 LAG1 6 3 29 -113 +-2435 59 +-1012 5
7237 1 May 02 14:33 LAG2 19 0 24 -1 +- 40 -18 +- 31 6
7237 1 May 02 15:23 LAG1 13 0 57 -37 +- 49 30 +- 28 7
7237 1 May 02 18:39 LAG2 10 0 40 43 +- 62 12 +- 98 6
7237 1 May 02 18:59 LAG1 11 0 28 -9 +- 53 21 +- 40 6
7237 3 May 02 14:51 LAG2 11 0 21 5 +- 52 -13 +- 36 6
7237 3 May 02 16:09 LAG1 17 0 36 -23 +- 42 13 +- 25 10
7237 4 May 02 12:48 LAG2 20 0 40 -12 +- 39 -29 +- 29 6
7237 4 May 02 14:44 LAG1 19 0 74 -69 +- 39 14 +- 28 8
7237 4 May 02 16:55 LAG2 19 0 42 40 +- 39 0 +- 32 12
7237 4 May 02 18:17 LAG1 19 0 39 19 +- 39 20 +- 22 5

Station 7403 (Arequipa) (Position solved, acc. 10 mm)
7403 25 Apr 02 02:25 LAG1 11 0 19 -18 +- 28 -6 +- 33 3
7403 29 Apr 02 03:51 LAG1 18 0 7 6 +- 22 -2 +- 13 1
7403 30 Apr 02 02:59 LAG1 5 0 13 40 +- 327 -26 +- 163 2
7403 30 Apr 02 05:55 LAG2 5 0 4 -4 +- 321 -1 +- 210 3
7403 30 Apr 02 06:05 LAG1 3 0 16 -15 +- 581 -21 +- 401 1
7403 30 Apr 02 10:05 LAG2 17 0 7 3 +- 24 4 +- 23 1
7403 1 May 02 01:23 LAG1 4 0 47 52 +- 112 12 +- 223 3
7403 1 May 02 04:37 LAG1 11 0 9 -6 +- 28 1 +- 15 6
7403 1 May 02 08:05 LAG2 14 0 5 -5 +- 28 1 +- 16 2
7403 2 May 02 03:33 LAG1 6 0 6 5 +- 56 1 +- 55 0

Station 7501 (Hartebeesthoek) (Position fixed, acc. 10 mm)
7501 25 Apr 02 08:31 LAG2 16 0 11 -8 +- 27 12 +- 26 2
7501 25 Apr 02 11:09 LAG1 5 0 12 28 +- 136 28 +- 108 1
7501 25 Apr 02 12:25 LAG2 24 0 19 4 +- 19 11 +- 11 3
7501 25 Apr 02 14:43 LAG1 4 0 7 -9 +- 72 18 +- 195 3
7501 25 Apr 02 18:01 LAG1 2 0 17 -47 +- 406 54 +- 706 0
7501 25 Apr 02 20:59 LAG1 14 0 14 -4 +- 27 6 +- 13 1
7501 26 Apr 02 10:33 LAG2 15 0 15 14 +- 34 15 +- 25 1
7501 28 Apr 02 20:31 LAG1 12 0 11 -10 +- 28 0 +- 16 1
7501 29 Apr 02 19:08 LAG1 11 0 10 -6 +- 30 -7 +- 28 5
7501 2 May 02 07:16 LAG2 5 0 23 -20 +- 77 5 +- 150 5
7501 2 May 02 18:41 LAG1 12 0 13 13 +- 29 -6 +- 25 1
7501 3 May 02 17:33 LAG1 5 0 7 5 +- 43 17 +- 147 0
7501 3 May 02 20:37 LAG1 10 0 4 -5 +- 51 -1 +- 24 3

Station 7806 (Metsahovi) (Position fixed, acc. 30 mm)
7806 29 Apr 02 21:56 LAG2 6 0 39 -31 +- 52 -34 +- 118 13

Station 7810 (Zimmerwald) (Position fixed, acc. 60 mm)
7810 25 Apr 02 21:39 LAG2 5 0 6 0 +- 535 4 +- 386 2
7810 26 Apr 02 07:07 LAG1 4 0 23 -27 +- 130 -18 +- 321 1
7810 27 Apr 02 09:17 LAG1 9 0 51 -37 +- 112 -11 +- 79 1
7810 27 Apr 02 17:26 LAG2 13 0 26 -35 +- 83 10 +- 57 3
7810 28 Apr 02 00:47 LAG1 21 0 45 -16 +- 44 -21 +- 23 5
7810 28 Apr 02 01:27 LAG2 18 0 63 -62 +- 47 1 +- 42 6
7810 28 Apr 02 04:20 LAG1 14 0 31 -5 +- 53 -24 +- 42 4
7810 28 Apr 02 08:03 LAG1 7 0 72 -37 +- 283 -19 +- 153 2
7810 30 Apr 02 05:21 LAG1 2 0 9 -2 +- 457 -18 +-1096 0
7810 30 Apr 02 12:18 LAG1 8 0 84 -72 +- 142 -12 +- 122 4
7810 30 Apr 02 15:45 LAG2 16 0 26 -21 +- 53 18 +- 42 6
7810 30 Apr 02 19:37 LAG2 23 0 38 -17 +- 42 21 +- 29 3
7810 30 Apr 02 23:43 LAG2 17 0 56 -44 +- 61 10 +- 40 5
7810 1 May 02 00:09 LAG1 22 0 29 -28 +- 43 -2 +- 23 3
7810 1 May 02 03:47 LAG1 14 0 30 -27 +- 54 -10 +- 42 6
7810 1 May 02 07:17 LAG1 6 0 12 5 +- 84 -12 +- 104 1

Station 7824 (San Fernando) (Position fixed, acc. 40 mm)
7824 25 Apr 02 01:37 LAG1 11 0 61 57 +- 45 -19 +- 26 6
7824 25 Apr 02 03:17 LAG2 5 0 49 -12 +- 266 -61 +- 268 7
7824 25 Apr 02 20:57 LAG2 6 0 8 60 +- 714 29 +- 376 5
7824 26 Apr 02 00:03 LAG1 7 0 30 112 +- 407 39 +- 189 2
7824 26 Apr 02 04:05 LAG1 2 0 51 -281 +-9631 211 +-6122 0
7824 26 Apr 02 23:07 LAG1 7 0 9 -21 +- 209 9 +- 146 2
7824 29 Apr 02 21:47 LAG2 3 0 1 -7 +- 497 -12 +- 740 0
7824 2 May 02 01:57 LAG2 10 0 19 18 +- 110 -1 +- 82 1
7824 2 May 02 02:33 LAG1 1 0 7 0 +- 0 0 +- 0 0
7824 3 May 02 01:17 LAG1 3 0 31 -29 +- 708 -37 +- 438 1

Station 7832 (Riyad) (Position fixed, acc. 20 mm)
7832 27 Apr 02 05:23 LAG1 10 0 13 -9 +- 34 12 +- 44 3
7832 27 Apr 02 13:17 LAG2 22 0 17 -13 +- 23 -2 +- 14 9
7832 28 Apr 02 07:25 LAG1 11 0 31 -27 +- 35 -3 +- 18 4
7832 28 Apr 02 11:29 LAG2 19 0 20 -15 +- 25 -6 +- 19 5
7832 28 Apr 02 15:37 LAG2 15 0 14 -12 +- 27 9 +- 35 4
7832 29 Apr 02 06:02 LAG1 8 2 29 -30 +- 99 -37 +- 84 19
7832 29 Apr 02 09:39 LAG1 11 1 7 -4 +- 36 6 +- 38 3
7832 29 Apr 02 13:32 LAG2 14 0 14 -7 +- 29 -4 +- 26 9
7832 30 Apr 02 08:05 LAG1 13 0 31 -14 +- 29 -11 +- 13 15
7832 30 Apr 02 11:49 LAG2 14 0 12 -4 +- 34 -7 +- 28 2
7832 4 May 02 12:01 LAG2 21 0 7 -3 +- 23 1 +- 14 5
7832 4 May 02 16:17 LAG2 19 0 5 2 +- 24 -1 +- 24 3

Station 7835 (Grasse) (Position fixed, acc. 30 mm)
7835 25 Apr 02 01:25 LAG1 11 0 21 2 +- 38 -10 +- 17 2
7835 27 Apr 02 21:35 LAG2 13 0 43 -43 +- 35 4 +- 39 3
7835 28 Apr 02 19:49 LAG2 8 0 20 -40 +- 92 16 +- 50 3
7835 28 Apr 02 23:37 LAG1 10 0 30 -14 +- 44 20 +- 27 3
7835 28 Apr 02 23:49 LAG2 17 0 27 -29 +- 43 21 +- 25 5
7835 29 Apr 02 18:18 LAG2 2 0 8 93 +-9160 -41 +-3713 0
7835 30 Apr 02 08:33 LAG1 11 0 34 -20 +- 38 -21 +- 30 9
7835 30 Apr 02 19:43 LAG2 13 0 14 -17 +- 49 -4 +- 43 2
7835 4 May 02 20:21 LAG2 9 0 20 -19 +- 47 2 +- 71 1
7835 4 May 02 22:13 LAG1 13 0 28 -25 +- 35 12 +- 23 6

Station 7836 (Potsdam) (Position fixed, acc. 30 mm)
7836 25 Apr 02 23:59 LAG1 14 0 11 -2 +- 34 7 +- 26 3
7836 27 Apr 02 21:42 LAG2 4 0 14 3 +- 65 42 +- 191 2
7836 28 Apr 02 00:41 LAG1 19 0 23 13 +- 29 -8 +- 17 6
7836 28 Apr 02 23:17 LAG1 11 0 22 1 +- 95 13 +- 54 3
7836 28 Apr 02 23:41 LAG2 11 0 18 -11 +- 42 11 +- 50 5

Station 7839 (Graz) (Position fixed, acc. 10 mm)
7839 25 Apr 02 20:33 LAG1 7 0 12 8 +- 55 10 +- 120 3
7839 25 Apr 02 21:19 LAG2 15 0 31 27 +- 27 4 +- 17 3
7839 26 Apr 02 19:21 LAG2 7 0 21 10 +- 50 -10 +- 42 2
7839 27 Apr 02 21:09 LAG1 15 0 16 15 +- 24 2 +- 22 1
7839 27 Apr 02 21:19 LAG2 25 0 25 17 +- 19 12 +- 11 0
7839 28 Apr 02 00:39 LAG1 20 0 39 20 +- 22 -12 +- 10 7
7839 28 Apr 02 01:41 LAG2 5 0 15 -14 +- 75 0 +- 141 5
7839 29 Apr 02 06:25 LAG1 11 0 26 26 +- 29 0 +- 28 1
7839 29 Apr 02 09:43 LAG1 10 0 16 8 +- 33 -6 +- 21 1
7839 30 Apr 02 19:40 LAG2 14 0 15 25 +- 41 11 +- 26 1
7839 30 Apr 02 20:53 LAG1 6 0 52 52 +- 97 0 +- 134 1
7839 30 Apr 02 23:45 LAG2 17 0 16 11 +- 23 7 +- 12 1
7839 1 May 02 00:05 LAG1 22 0 11 9 +- 20 2 +- 8 1
7839 1 May 02 22:03 LAG2 11 0 28 27 +- 29 3 +- 23 1
7839 1 May 02 22:45 LAG1 21 0 23 23 +- 21 1 +- 12 2
7839 2 May 02 02:01 LAG2 8 0 10 -8 +- 38 1 +- 35 5
7839 2 May 02 02:13 LAG1 12 0 11 3 +- 32 -5 +- 20 1
7839 2 May 02 05:57 LAG1 12 0 36 42 +- 35 -7 +- 26 1
7839 2 May 02 20:25 LAG2 10 0 53 39 +- 90 9 +- 59 1
7839 2 May 02 21:37 LAG1 3 0 47 43 +- 134 -11 +- 328 1
7839 3 May 02 00:21 LAG2 12 0 3 -5 +- 44 2 +- 39 1
7839 3 May 02 00:53 LAG1 14 0 45 3 +- 31 -19 +- 14 1
7839 3 May 02 04:41 LAG1 5 0 48 50 +- 49 -8 +- 106 4
7839 3 May 02 14:13 LAG2 13 0 51 51 +- 32 1 +- 30 2
7839 3 May 02 22:13 LAG2 14 0 31 30 +- 25 3 +- 14 4
7839 3 May 02 23:31 LAG1 25 0 24 22 +- 19 -3 +- 9 3
7839 4 May 02 02:14 LAG2 5 0 22 -16 +- 125 9 +- 198 2

Station 7840 (Herstmonceux) (Position fixed, acc. 20 mm)
7840 25 Apr 02 17:02 LAG2 16 0 13 6 +- 27 -6 +- 19 1
7840 25 Apr 02 21:05 LAG2 15 0 21 20 +- 28 0 +- 17 5
7840 26 Apr 02 19:13 LAG2 17 0 11 -1 +- 26 -7 +- 18 2
7840 26 Apr 02 22:41 LAG1 11 0 33 -33 +- 32 7 +- 45 1
7840 26 Apr 02 23:31 LAG2 12 0 11 11 +- 38 -10 +- 28 1
7840 27 Apr 02 02:13 LAG1 16 0 27 25 +- 27 -10 +- 15 5
7840 27 Apr 02 05:43 LAG1 14 0 9 9 +- 30 0 +- 22 3
7840 27 Apr 02 09:25 LAG1 6 0 8 7 +- 103 -8 +- 57 1
7840 28 Apr 02 11:39 LAG1 6 0 9 -2 +- 217 -3 +- 117 3
7840 28 Apr 02 15:29 LAG2 10 0 13 -5 +- 49 8 +- 51 4
7840 29 Apr 02 13:43 LAG1 5 0 23 -23 +- 49 1 +- 163 1
7840 29 Apr 02 17:31 LAG2 20 0 13 -3 +- 24 9 +- 17 3
7840 30 Apr 02 23:53 LAG2 5 0 3 -1 +- 163 -2 +- 162 3
7840 1 May 02 00:37 LAG1 7 0 15 11 +- 173 1 +- 92 2
7840 1 May 02 07:17 LAG1 10 0 11 12 +- 36 -4 +- 22 2
7840 1 May 02 17:59 LAG2 15 0 9 -1 +- 43 7 +- 30 2
7840 1 May 02 21:53 LAG2 18 0 8 7 +- 25 0 +- 19 2
7840 1 May 02 23:00 LAG1 9 0 8 8 +- 41 -1 +- 55 1
7840 2 May 02 09:33 LAG1 3 0 6 1 +- 73 -19 +- 278 2
7840 3 May 02 11:43 LAG1 5 0 20 -15 +- 49 -13 +- 70 2
7840 4 May 02 10:16 LAG1 5 0 7 10 +- 70 -3 +- 32 2
7840 4 May 02 16:03 LAG2 10 0 15 13 +- 37 9 +- 23 2
7840 4 May 02 20:11 LAG2 13 0 24 26 +- 32 11 +- 31 2
7840 4 May 02 22:19 LAG1 8 0 15 -14 +- 38 5 +- 41 2

Station 7848 (Ajaccio) (Position solved, acc. 30 mm)
7848 4 May 02 20:23 LAG2 9 0 29 5 +- 42 28 +- 53 17
7848 4 May 02 22:29 LAG1 10 0 12 -12 +- 43 7 +- 44 4

Station 7849 (Mount Stromlo) (Position fixed, acc. 10 mm)
7849 25 Apr 02 01:11 LAG2 14 0 10 -6 +- 31 -3 +- 26 4
7849 25 Apr 02 23:07 LAG2 11 0 13 0 +- 31 -10 +- 27 6
7849 26 Apr 02 02:02 LAG1 12 0 24 -28 +- 35 -5 +- 26 2
7849 26 Apr 02 03:13 LAG2 16 0 35 -33 +- 24 -8 +- 18 5
7849 26 Apr 02 05:31 LAG1 3 0 14 4 +- 326 -5 +- 178 2
7849 27 Apr 02 00:47 LAG1 4 0 37 -47 +- 192 -14 +- 251 2
7849 27 Apr 02 01:21 LAG2 14 0 5 -4 +- 25 -2 +- 24 1
7849 27 Apr 02 04:23 LAG1 6 0 10 -10 +- 40 -5 +- 63 4
7849 27 Apr 02 05:23 LAG2 5 0 10 1 +- 116 14 +- 145 2
7849 27 Apr 02 10:51 LAG1 17 0 14 -13 +- 23 0 +- 14 4
7849 27 Apr 02 14:24 LAG1 15 0 3 -1 +- 26 0 +- 15 3
7849 27 Apr 02 15:18 LAG2 3 0 7 -2 +- 55 17 +- 139 1
7849 27 Apr 02 19:17 LAG2 15 0 4 -3 +- 37 2 +- 24 2
7849 27 Apr 02 23:18 LAG2 12 0 19 16 +- 28 -10 +- 26 7
7849 28 Apr 02 03:39 LAG2 11 0 11 -17 +- 46 9 +- 35 5
7849 28 Apr 02 09:44 LAG1 5 0 14 -5 +- 53 -6 +- 45 7
7849 28 Apr 02 17:09 LAG2 2 0 47 -5 +- 68 24 +- 35 0
7849 30 Apr 02 00:19 LAG1 7 0 8 0 +- 51 -13 +- 83 4
7849 30 Apr 02 03:39 LAG2 4 0 16 -43 +- 456 -16 +- 261 5
7849 30 Apr 02 04:01 LAG1 5 0 47 -2 +- 197 -26 +- 115 2
7849 30 Apr 02 13:51 LAG1 6 0 12 2 +- 88 -5 +- 56 5
7849 30 Apr 02 17:35 LAG2 15 0 25 -12 +- 33 23 +- 23 2
7849 1 May 02 02:28 LAG1 4 0 5 -4 +- 63 -3 +- 118 3
7849 1 May 02 23:47 LAG2 17 0 18 4 +- 23 -12 +- 16 4
7849 2 May 02 00:59 LAG1 6 0 8 -6 +- 39 -4 +- 41 3
7849 3 May 02 03:23 LAG1 5 0 4 2 +- 108 2 +- 98 1
7849 4 May 02 00:03 LAG2 17 0 9 -9 +- 23 0 +- 19 3
7849 4 May 02 01:46 LAG1 9 0 16 -9 +- 32 12 +- 33 3
7849 4 May 02 04:15 LAG2 9 0 18 5 +- 36 13 +- 31 2
7849 4 May 02 08:45 LAG1 8 0 23 10 +- 48 17 +- 59 6
7849 4 May 02 11:47 LAG1 4 0 26 -148 +-1135 -46 +- 425 2
7849 4 May 02 15:29 LAG1 12 0 8 -6 +- 28 -8 +- 35 2
7849 4 May 02 17:44 LAG2 15 0 6 -1 +- 29 -1 +- 18 4

Station 7941 (Matera) (Position solved, acc. 10 mm)
7941 30 Apr 02 11:54 LAG2 9 2 6 9 +- 57 -15 +- 110 2
7941 30 Apr 02 19:43 LAG2 14 0 2 3 +- 49 2 +- 36 0
7941 30 Apr 02 23:49 LAG2 18 0 4 -2 +- 27 1 +- 19 0
7941 1 May 02 00:25 LAG1 17 0 6 -6 +- 30 4 +- 16 2
7941 1 May 02 03:47 LAG1 14 0 7 6 +- 26 1 +- 22 1

Station 8834 (Wettzell) (Position fixed, acc. 10 mm)
8834 28 Apr 02 04:30 LAG1 7 0 33 -25 +- 59 -6 +- 42 2
8834 28 Apr 02 23:25 LAG1 3 0 63 -61 +- 426 0 +- 232 0
8834 30 Apr 02 19:41 LAG2 10 0 48 -64 +- 73 -10 +- 43 5
8834 30 Apr 02 23:47 LAG2 9 0 53 -73 +- 95 -14 +- 60 2
8834 1 May 02 00:09 LAG1 6 0 62 -96 +- 306 -14 +- 133 1
8834 1 May 02 03:57 LAG1 6 0 43 -48 +- 56 4 +- 37 4
--------------------------------------------------------------------------------



Distribution of daytime, nighttime and twilight passes since Jul 1, 2001:
--------------------------------------------------------------------------
Station System Period Number of Passes
LAGEOS-1 LAGEOS-2
Day/Night/Twil. Day/Night/Twil. Total
--------------------------------------------------------------------------
1824 KIEVLA 010704 - 020318 0/ 13/ 0 0/ 21/ 0 34
1863 MDNLAS 010808 - 011118 0/ 9/ 0 0/ 5/ 0 14
1864 MD2LAS 011025 - 020410 0/ 11/ 0 0/ 18/ 0 29
1868 KOMLAS 010910 - 020425 0/ 13/ 0 0/ 11/ 0 24
1873 SIMLAS 010706 - 020506 0/ 46/ 0 0/ 62/ 0 108
1884 RIGLAS 010702 - 020505 0/ 51/ 0 0/ 80/ 4 135
1893 CRMLAS 010702 - 020504 0/ 28/ 0 0/ 44/ 0 72
7080 MLRS25 010703 - 020506 102/131/ 18 136/180/ 16 583
7090 ML0514 010701 - 020504 213/418/ 41 255/259/ 32 1218
7105 ML0725 010701 - 020506 164/189/ 26 108/254/ 19 760
7110 ML0414 010701 - 020506 81/267/ 28 68/362/ 31 837
7124 ML0819 011101 - 020503 0/ 38/ 0 0/ 21/ 0 59
7210 HOLLAS 010703 - 020502 5/ 90/ 4 16/112/ 9 236
7231 WUHA01 010704 - 010806 0/ 2/ 0 0/ 1/ 0 3
7237 CHALAS 010708 - 020505 0/187/ 1 0/258/ 3 449
7249 BEJLAS 010704 - 020417 0/ 65/ 0 0/ 95/ 0 160
7339 TATLAS 010702 - 011012 27/ 1/ 0 16/ 0/ 0 44
7356 TROS01 010824 - 011229 0/ 62/ 0 0/ 52/ 0 114
7403 TLRS3 010704 - 020506 4/ 71/ 1 2/ 65/ 2 145
7501 ML0616 010701 - 020503 120/150/ 6 166/109/ 18 569
7548 CAGLAS 010718 - 020415 0/ 4/ 0 0/ 13/ 0 17
7806 METLAS 010702 - 020429 0/ 36/ 3 0/ 45/ 1 85
7810 ZIMLAT 010701 - 020501 263/162/ 26 124/185/ 20 780
7811 POLLAS 010701 - 020328 0/ 52/ 1 0/ 68/ 0 121
7820 YSLR01 011012 - 020414 0/ 53/ 1 0/ 78/ 0 132
7824 SPNLAS 010705 - 020503 0/ 58/ 3 0/ 75/ 3 139
7832 SALRO 010701 - 020505 208/ 44/ 12 178/ 43/ 13 498
7835 GRASSE 010701 - 020506 91/161/ 22 50/199/ 16 539
7836 GFZLAS 010701 - 020429 2/ 73/ 6 2/ 96/ 11 190
7837 CHILAS 010702 - 020413 0/ 82/ 1 0/111/ 1 195
7838 SHOLAS 010704 - 020417 7/ 72/ 5 12/108/ 3 207
7839 AUSLAS 010702 - 020504 162/178/ 26 90/183/ 21 660
7840 RGOLAS 010701 - 020505 294/168/ 36 125/206/ 29 858
7845 GRASLL 010701 - 020418 73/ 52/ 15 33/ 64/ 8 245
7848 FTLR03 020202 - 020506 3/ 12/ 0 1/ 19/ 1 36
7849 MSLO01 010701 - 020506 152/216/ 22 200/116/ 29 735
7941 MLROnn 010703 - 020501 67/ 24/ 7 33/ 34/ 3 168
8834 WLRS01 010701 - 020501 139/ 89/ 21 80/140/ 20 489
--------------------------------------------------------------------------


C. EARTH ROTATION PARAMETER SOLUTIONS FOR IERS

The following solutions for the polar motion and the UT1-UTC time difference
were also obtained in the 10-day data arc analysis described in the previous
section. Only solutions submitted to IERS are presented here.

--------------------------------------------------------------
DATE X Y UT1-UTC
(YYMMDD.D) (MAS) (MAS) (MS)
--------------------------------------------------------------
020428.0 57.1 +/- 0.1 554.2 +/- 0.1 -32215.66 +/- 0.01
020501.0 67.8 +/- 0.1 553.2 +/- 0.1 -32217.41 +/- 0.01
--------------------------------------------------------------



D. COMMENTS

1. This is a QLDAC analysis report in a new style. Although our old report
served quite well for observation campaigns, we have received many requests
to adjust our report to the current situation (i.e. a permanent global SLR
network with few mobile systems), and to spend more attention to the quality
of the data taken by the global network.
The most important element of the report is the table with statistics for
each individual data pass. Although the numbers will speak for themselves,
we must give a warning here that some of you may be disappointed to see that
their station appears to be suffering from a data problem. However, we are
using a model for station positions that is already 7 years old, and which
may be responsible for errors in the station position in the order of 1-5 cm.
We intend to introduce a new coordinates solution in the course of this
millennium.
Readers of this report are invited to provide us suggestions for further
improvements.


”/DGFI3/home/slreport/mbox” complete
From: Ron Noomen

********************************************************************************

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