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SLR-Report No.1469

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Date:2002-01-01 07:45:00
Sender:Ron Noomen, DEOS, Delft, The Netherlands <Ron Noomen <Ron.Noomen@lr.tudelft.nl>>
Subject:[SLR-Report] No. 1469: Delft QL Report, January 01, 2002
Author:Ron Noomen, DEOS, Delft, The Netherlands
Content:********************************************************************************
SLR Electronic Report 2002-01-01 07:45:00 UTC Message No. 1469
********************************************************************************

Author: Ron Noomen, DEOS, Delft, The Netherlands
Subject: Delft QL Report, January 01, 2002


WEGENER-2 IERS

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


January 1, 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, Dec 31, 2001.
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,
Dec 31, 2001. 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
------------------------------------------------------------------------------
1864 Maidanak, Uzbekistan (site 2) 011224 - 011227 - 2
7080 McDonald Obs., Fort Davis, TX 011229 - 011229 1 1
7090 Yarragadee, Australia 011226 - 011231 14 13
7105 Greenbelt, Maryland 011219 - 011229 17 14
7210 Haleakala Obs., Maui, Hawaii 011228 - 011228 - 1
7237 Changchun, China 011224 - 011230 4 3
7249 Beijing, China 011225 - 011226 1 1
7356 Lhasa, China (TROS) 011205 - 011229 6 3
7501 Hartebeesthoek, SA (MOB-6) 011224 - 011229 5 7
7806 Metsahovi, Finland 011227 - 011231 2 1
7810 Zimmerwald, Switzerland 011227 - 011231 6 5
7820 Kunming, China 011224 - 011227 2 -
7824 San Fernando, Spain 011227 - 011227 1 -
7832 Riyad, Saudi Arabia 011224 - 011231 12 9
7835 Grasse, France 011222 - 011229 4 -
7837 Shanghai Observatory, China 011227 - 011230 5 1
7838 Simosato Observatory, Japan 011225 - 011228 3 1
7839 Graz, Austria 011223 - 011228 4 4
7840 Herstmonceux, United Kingdom 011230 - 011231 4 3
7849 Mount Stromlo, Australia 011224 - 011231 15 14
------ ------ --- ---
TOTAL 011205 - 011231 106 83
------------------------------------------------------------------------------


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, Dec 20, 2001 to Sun, Dec 30, 2001. 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 20
Number of Passes 143/139 114/112
Number of Normal Points 1437/1355 1285/1248
RMS of Fit (mm) 27 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 1864 (Maidanak) (Position fixed, acc. 200 mm)
1864 24 Dec 01 23:49 LAG2 2 0 158 -320 +-9999 -140 +-9199 0
1864 26 Dec 01 23:53 LAG2 11 0 178 -6 +- 183 102 +- 118 82

Station 7080 (McDonald Obs.) (Position fixed, acc. 20 mm)
7080 20 Dec 01 20:35 LAG2 16 0 20 4 +- 27 10 +- 16 5
7080 20 Dec 01 21:46 LAG1 13 0 6 -1 +- 29 3 +- 19 2
7080 21 Dec 01 01:38 LAG1 8 0 12 -6 +- 135 -3 +- 80 1
7080 21 Dec 01 22:53 LAG2 11 0 24 -24 +- 33 -5 +- 39 1
7080 22 Dec 01 00:07 LAG1 11 0 16 -21 +- 46 6 +- 31 3
7080 23 Dec 01 23:06 LAG2 17 0 14 -9 +- 30 -4 +- 23 5
7080 24 Dec 01 01:06 LAG1 6 0 7 -21 +- 218 8 +- 116 2
7080 29 Dec 01 13:59 LAG1 4 0 32 31 +- 877 -24 +- 337 2
7080 29 Dec 01 15:21 LAG2 5 0 6 7 +- 98 3 +- 92 4

Station 7090 (Yarragadee) (Position fixed, acc. 10 mm)
7090 21 Dec 01 08:32 LAG1 7 0 23 -37 +- 60 21 +- 48 2
7090 21 Dec 01 08:55 LAG2 8 0 37 14 +- 145 -29 +- 81 2
7090 21 Dec 01 11:53 LAG1 16 0 44 30 +- 24 25 +- 16 4
7090 21 Dec 01 12:31 LAG2 13 0 48 16 +- 29 -29 +- 21 2
7090 21 Dec 01 15:19 LAG1 10 0 28 -23 +- 30 22 +- 35 1
7090 21 Dec 01 16:47 LAG2 26 0 13 12 +- 18 0 +- 12 3
7090 21 Dec 01 18:27 LAG1 21 0 29 -28 +- 21 4 +- 13 3
7090 22 Dec 01 10:39 LAG1 9 0 15 -10 +- 32 8 +- 30 2
7090 22 Dec 01 11:04 LAG2 2 0 37 29 +-1048 -41 +- 643 0
7090 22 Dec 01 15:27 LAG2 4 0 22 -13 +- 728 -5 +- 404 1
7090 22 Dec 01 17:14 LAG1 3 0 26 -25 +- 55 -1 +- 53 8
7090 23 Dec 01 09:29 LAG1 6 0 20 -41 +- 108 20 +- 85 2
7090 23 Dec 01 12:43 LAG1 11 0 7 7 +- 31 4 +- 31 1
7090 23 Dec 01 13:07 LAG2 12 0 25 5 +- 59 -23 +- 45 0
7090 23 Dec 01 16:11 LAG1 4 0 23 -24 +- 55 2 +- 217 0
7090 23 Dec 01 16:59 LAG2 26 0 7 2 +- 18 4 +- 11 1
7090 23 Dec 01 19:11 LAG1 17 0 10 -11 +- 25 -3 +- 16 2
7090 23 Dec 01 21:13 LAG2 16 0 38 37 +- 24 5 +- 22 4
7090 23 Dec 01 23:03 LAG1 10 0 16 27 +- 62 -20 +- 40 4
7090 24 Dec 01 07:54 LAG1 9 0 35 -33 +- 32 11 +- 54 4
7090 26 Dec 01 08:47 LAG1 8 1 12 -5 +- 36 16 +- 64 7
7090 26 Dec 01 11:03 LAG2 7 0 34 21 +- 164 -7 +- 96 0
7090 26 Dec 01 12:01 LAG1 8 0 19 -8 +- 169 5 +- 80 1
7090 26 Dec 01 15:17 LAG2 22 0 15 -14 +- 20 -1 +- 13 2
7090 26 Dec 01 18:41 LAG1 11 0 27 -35 +- 47 -8 +- 35 2
7090 27 Dec 01 07:33 LAG1 4 0 9 22 +- 161 -30 +- 212 6
7090 27 Dec 01 09:35 LAG2 10 0 8 35 +- 139 -14 +- 66 3
7090 27 Dec 01 10:47 LAG1 12 0 5 -1 +- 32 3 +- 23 1
7090 27 Dec 01 13:19 LAG2 4 0 14 -20 +- 476 -22 +- 313 0
7090 27 Dec 01 20:57 LAG1 16 0 4 0 +- 29 0 +- 15 3
7090 27 Dec 01 21:47 LAG2 10 0 106 110 +- 38 -8 +- 50 5*CHK*
7090 28 Dec 01 07:23 LAG2 15 0 43 -43 +- 25 0 +- 24 3
7090 29 Dec 01 08:05 LAG1 16 0 6 4 +- 24 2 +- 21 2
7090 29 Dec 01 09:21 LAG2 19 0 33 14 +- 22 -17 +- 12 6
7090 29 Dec 01 11:31 LAG1 22 0 27 20 +- 20 7 +- 11 8
7090 29 Dec 01 13:29 LAG2 15 0 7 -9 +- 40 -2 +- 33 0
7090 29 Dec 01 15:03 LAG1 7 0 15 -15 +- 36 4 +- 80 1
7090 29 Dec 01 17:43 LAG2 11 0 5 9 +- 97 7 +- 52 1
7090 29 Dec 01 18:05 LAG1 5 0 8 10 +- 408 9 +- 200 1

Station 7105 (Greenbelt) (Position fixed, acc. 10 mm)
7105 20 Dec 01 08:41 LAG2 8 0 24 31 +- 46 -23 +- 84 2
7105 20 Dec 01 11:59 LAG1 2 0 20 -64 +-2918 17 +-1167 0
7105 20 Dec 01 21:55 LAG1 15 0 28 -31 +- 41 2 +- 21 2
7105 21 Dec 01 10:01 LAG1 12 0 4 1 +- 28 1 +- 15 2
7105 21 Dec 01 10:43 LAG2 9 0 5 1 +- 40 3 +- 29 1
7105 21 Dec 01 13:43 LAG1 9 0 12 -10 +- 32 -4 +- 24 4
7105 21 Dec 01 14:38 LAG2 19 0 25 -20 +- 22 14 +- 16 5
7105 21 Dec 01 20:29 LAG1 8 0 7 -6 +- 33 1 +- 34 2
7105 22 Dec 01 00:07 LAG1 12 0 47 -53 +- 40 8 +- 37 3
7105 22 Dec 01 08:47 LAG2 4 0 19 28 +- 188 14 +- 288 5
7105 22 Dec 01 09:07 LAG1 3 0 18 15 +- 778 2 +- 581 0
7105 22 Dec 01 12:09 LAG1 3 0 5 57 +-1622 19 +- 591 3
7105 22 Dec 01 12:47 LAG2 7 0 31 -27 +- 50 7 +- 80 0
7105 22 Dec 01 17:15 LAG2 9 0 12 -6 +- 96 12 +- 67 2
7105 22 Dec 01 19:07 LAG1 13 0 12 12 +- 27 -4 +- 22 3
7105 26 Dec 01 09:33 LAG2 3 0 27 -7 +- 542 24 +- 384 1
7105 26 Dec 01 10:29 LAG1 2 0 27 41 +- 582 18 +- 734 0
7105 26 Dec 01 13:55 LAG1 9 0 40 -37 +- 32 -9 +- 24 6
7105 27 Dec 01 07:29 LAG2 6 0 21 17 +- 47 18 +- 135 4
7105 27 Dec 01 09:03 LAG1 8 0 56 60 +- 36 -13 +- 31 2
7105 27 Dec 01 11:17 LAG2 10 0 31 -14 +- 31 20 +- 20 4
7105 27 Dec 01 22:39 LAG1 22 0 24 -22 +- 20 0 +- 12 8
7105 28 Dec 01 09:23 LAG2 8 0 15 1 +- 52 21 +- 66 2
7105 28 Dec 01 11:07 LAG1 18 0 9 -8 +- 22 -1 +- 13 4
7105 28 Dec 01 13:27 LAG2 9 0 28 -26 +- 32 6 +- 33 4
7105 29 Dec 01 15:53 LAG2 3 0 35 -37 +- 77 -16 +- 378 2

Station 7110 (Monument Peak) (Position fixed, acc. 10 mm)
7110 20 Dec 01 02:45 LAG1 18 0 24 16 +- 22 -16 +- 19 1
7110 20 Dec 01 11:44 LAG1 4 0 81 -74 +- 181 9 +- 218 4
7110 20 Dec 01 12:17 LAG2 5 0 10 -21 +- 93 -29 +- 152 1
7110 23 Dec 01 23:13 LAG2 3 0 5660 2719 +- 109 -15757 +- 246 2957*CHK*
7110 24 Dec 01 00:47 LAG1 16 0 28 -27 +- 25 9 +- 12 5

Station 7210 (Haleakala Obs.) (Position fixed, acc. 20 mm)
7210 20 Dec 01 02:52 LAG2 7 0 39 -9 +- 317 -13 +- 146 2
7210 20 Dec 01 06:33 LAG1 4 0 48 50 +- 73 -10 +- 286 2
7210 21 Dec 01 04:39 LAG2 11 0 11 -11 +- 38 3 +- 50 4
7210 21 Dec 01 05:03 LAG1 14 0 20 21 +- 32 -2 +- 23 3
7210 28 Dec 01 03:42 LAG2 3 0 88611 99999 +- 262 -99999 +- 202 9999*CHK*

Station 7237 (Changchun) (Position fixed, acc. 50 mm)
7237 21 Dec 01 21:21 LAG1 11 0 45 -35 +- 53 21 +- 53 7
7237 24 Dec 01 20:03 LAG2 17 0 39 -24 +- 43 -34 +- 40 8
7237 24 Dec 01 20:49 LAG1 13 0 22 -18 +- 63 16 +- 38 8
7237 26 Dec 01 09:23 LAG1 10 0 14 -2 +- 66 -6 +- 42 8
7237 26 Dec 01 20:29 LAG2 14 0 56 -28 +- 64 -26 +- 54 8
7237 26 Dec 01 21:30 LAG1 16 0 36 0 +- 48 21 +- 28 9

Station 7249 (Beijing) (Position solved, acc. 50 mm)
7249 22 Dec 01 20:19 LAG1 4 0 13 -47 +- 517 44 +- 467 10
7249 25 Dec 01 22:15 LAG2 8 0 15 4 +- 75 0 +- 67 14
7249 26 Dec 01 21:41 LAG1 12 0 144 -101 +- 60 75 +- 44 108

Station 7356 (Lhasa) (Position solved, acc. 10 mm)
7356 20 Dec 01 13:58 LAG1 4 1 58 54 +- 67 -10 +- 119 0
7356 20 Dec 01 22:47 LAG1 11 2 25 -59 +- 108 -37 +- 58 14
7356 20 Dec 01 23:09 LAG2 17 1 17 -4 +- 25 0 +- 15 16
7356 21 Dec 01 12:01 LAG2 2 0 38 -95 +- 375 -516 +-1520 0
7356 21 Dec 01 12:31 LAG1 3 0 40 525 +- 914 256 +- 470 6
7356 29 Dec 01 12:27 LAG1 9 3 28 18 +- 60 -18 +- 52 25

Station 7501 (Hartebeesthoek) (Position fixed, acc. 10 mm)
7501 20 Dec 01 17:09 LAG1 22 0 36 2 +- 20 20 +- 11 1
7501 20 Dec 01 17:51 LAG2 12 0 29 -15 +- 28 14 +- 14 4
7501 21 Dec 01 15:53 LAG1 13 0 28 0 +- 26 21 +- 20 1
7501 21 Dec 01 16:33 LAG2 7 0 19 2 +- 424 7 +- 177 1
7501 21 Dec 01 19:17 LAG1 15 0 23 13 +- 24 18 +- 22 1
7501 21 Dec 01 20:23 LAG2 14 0 17 11 +- 31 7 +- 28 1
7501 22 Dec 01 17:53 LAG1 21 0 16 -7 +- 20 8 +- 12 2
7501 22 Dec 01 18:37 LAG2 8 0 12 -15 +- 154 17 +- 99 0
7501 24 Dec 01 14:40 LAG2 7 0 21 -16 +- 92 -3 +- 62 0
7501 24 Dec 01 15:13 LAG1 17 1 24 -15 +- 25 9 +- 17 5
7501 24 Dec 01 18:41 LAG2 2 0 2 0 +- 331 -8 +-1257 0
7501 24 Dec 01 18:43 LAG1 17 0 14 -6 +- 23 9 +- 18 1
7501 27 Dec 01 14:55 LAG1 3 0 63938 -9526 +- 62 -50132 +- 53 4042*CHK*
7501 27 Dec 01 16:45 LAG2 8 0 5 10 +- 73 6 +- 62 2
7501 28 Dec 01 14:53 LAG2 19 0 11 -1 +- 25 7 +- 15 2
7501 28 Dec 01 16:45 LAG1 24 0 24 -3 +- 19 12 +- 10 1
7501 28 Dec 01 18:55 LAG2 20 0 6 0 +- 22 -6 +- 22 1
7501 29 Dec 01 17:15 LAG2 14 0 11 -25 +- 56 13 +- 36 1
7501 29 Dec 01 19:01 LAG1 10 0 6 1 +- 31 9 +- 40 0
7501 29 Dec 01 21:12 LAG2 20 0 10 4 +- 21 6 +- 15 1

Station 7806 (Metsahovi) (Position fixed, acc. 30 mm)
7806 20 Dec 01 18:15 LAG1 5 0 32 -29 +- 85 6 +- 159 7
7806 27 Dec 01 15:35 LAG1 5 0 39 -29 +- 133 8 +- 131 14

Station 7810 (Zimmerwald) (Position fixed, acc. 60 mm)
7810 21 Dec 01 06:19 LAG1 11 0 24 -11 +- 69 -14 +- 56 2
7810 21 Dec 01 06:59 LAG2 16 0 38 -28 +- 51 13 +- 33 7
7810 21 Dec 01 11:17 LAG2 16 0 25 -24 +- 60 19 +- 39 2
7810 21 Dec 01 13:03 LAG1 13 0 8 -8 +- 59 -3 +- 45 1
7810 24 Dec 01 09:09 LAG1 12 0 47 -33 +- 64 -14 +- 44 2
7810 24 Dec 01 09:47 LAG2 5 0 9 -15 +- 162 11 +- 143 4
7810 27 Dec 01 07:44 LAG2 6 0 69 -27 +- 103 48 +- 62 17
7810 27 Dec 01 08:57 LAG1 5 0 80 -43 +- 666 -17 +- 323 10
7810 27 Dec 01 12:13 LAG2 9 0 17 -40 +- 173 18 +- 109 2

Station 7820 (Kunming) (Position solved, acc. 80 mm)
7820 20 Dec 01 10:51 LAG1 2 0 22 -2101 +-9999 767 +-6365 0
7820 23 Dec 01 21:39 LAG2 7 0 31 5 +- 357 -15 +- 254 15
7820 23 Dec 01 22:21 LAG1 6 0 16 54 +- 422 28 +- 255 8
7820 24 Dec 01 12:09 LAG1 4 0 41 -66 +- 270 113 +- 540 26
7820 27 Dec 01 11:21 LAG1 16 0 16 -11 +- 64 8 +- 50 8

Station 7824 (San Fernando) (Position fixed, acc. 40 mm)
7824 27 Dec 01 19:04 LAG1 1 0 59 0 +- 0 0 +- 0 0

Station 7832 (Riyad) (Position fixed, acc. 20 mm)
7832 22 Dec 01 09:45 LAG2 10 0 16 14 +- 40 -4 +- 57 3
7832 22 Dec 01 13:40 LAG2 14 0 9 -6 +- 28 -3 +- 19 5
7832 23 Dec 01 07:36 LAG2 17 0 58 36 +- 26 -25 +- 33 42
7832 23 Dec 01 11:43 LAG2 18 0 18 -2 +- 25 -9 +- 14 7
7832 23 Dec 01 13:35 LAG1 12 0 17 -18 +- 39 2 +- 20 7
7832 24 Dec 01 09:49 LAG2 18 0 16 -7 +- 29 -14 +- 24 5
7832 24 Dec 01 12:13 LAG1 11 0 8 -7 +- 34 2 +- 21 4
7832 24 Dec 01 13:55 LAG2 19 0 12 7 +- 24 -6 +- 22 5
7832 24 Dec 01 15:53 LAG1 10 0 9 -3 +- 61 -3 +- 52 5
7832 25 Dec 01 12:22 LAG2 11 0 23 -35 +- 72 8 +- 46 1
7832 25 Dec 01 14:15 LAG1 10 0 32 -50 +- 59 -17 +- 39 4
7832 26 Dec 01 05:53 LAG2 15 0 11 -10 +- 28 2 +- 40 5
7832 26 Dec 01 10:09 LAG2 7 0 20 -17 +- 163 1 +- 115 3
7832 26 Dec 01 12:51 LAG1 16 0 21 -18 +- 28 1 +- 16 9
7832 26 Dec 01 14:13 LAG2 15 0 9 -3 +- 27 5 +- 34 7
7832 27 Dec 01 15:11 LAG1 7 0 7 8 +- 50 3 +- 67 2
7832 28 Dec 01 13:49 LAG1 11 0 15984-15621 +- 38 8618 +- 22 6740*CHK*
7832 29 Dec 01 06:00 LAG1 6 0 37 -42 +- 71 7 +- 92 1
7832 29 Dec 01 08:23 LAG2 18 0 29 -26 +- 25 -5 +- 24 12
7832 29 Dec 01 12:19 LAG1 11 0 27 6 +- 51 -14 +- 33 4
7832 29 Dec 01 12:52 LAG2 9 0 40 -58 +- 111 13 +- 72 6
7832 29 Dec 01 16:01 LAG1 6 0 48 -53 +- 54 -21 +- 111 2

Station 7835 (Grasse) (Position fixed, acc. 30 mm)
7835 20 Dec 01 17:47 LAG1 15 0 10 -2 +- 34 -3 +- 20 6
7835 21 Dec 01 09:55 LAG1 10 0 6 -10 +- 84 4 +- 54 3
7835 21 Dec 01 11:01 LAG2 5 0 10 -13 +-1037 -1 +- 478 1
7835 22 Dec 01 18:49 LAG1 17 0 30 -27 +- 32 -6 +- 31 2
7835 25 Dec 01 18:15 LAG1 14 0 26 -21 +- 40 -5 +- 28 6
7835 28 Dec 01 03:47 LAG1 5 0 5 2 +- 95 -5 +- 161 2
7835 29 Dec 01 16:09 LAG1 11 0 21 -24 +- 64 -22 +- 41 2

Station 7837 (Shanghai Observatory) (Position fixed, acc. 50 mm)
7837 23 Dec 01 09:57 LAG1 7 0 51 -77 +- 113 34 +- 100 8
7837 27 Dec 01 20:23 LAG1 8 0 109 -102 +- 71 -9 +- 58 7
7837 28 Dec 01 10:05 LAG1 6 0 77 -68 +- 79 26 +- 140 8
7837 29 Dec 01 21:13 LAG1 12 0 93 -85 +- 57 -10 +- 45 12

Station 7838 (Simosato Observatory) (Position fixed, acc. 30 mm)
7838 22 Dec 01 07:40 LAG1 1 0 37 0 +- 0 0 +- 0 0
7838 25 Dec 01 18:21 LAG2 16 0 16 -13 +- 46 8 +- 38 14
7838 25 Dec 01 19:43 LAG1 6 0 17 5 +- 181 8 +- 134 2
7838 26 Dec 01 18:13 LAG1 6 0 21 21 +- 75 0 +- 161 4
7838 28 Dec 01 10:09 LAG1 8 0 9 4 +- 66 4 +- 94 6

Station 7839 (Graz) (Position fixed, acc. 10 mm)
7839 20 Dec 01 03:51 LAG1 14 0 15 15 +- 26 0 +- 19 1
7839 20 Dec 01 04:43 LAG2 26 0 36 21 +- 19 -13 +- 12 5
7839 20 Dec 01 07:33 LAG1 15 0 19 22 +- 30 -4 +- 14 3
7839 20 Dec 01 08:47 LAG2 19 0 23 23 +- 22 4 +- 11 1
7839 20 Dec 01 11:05 LAG1 12 0 12 14 +- 39 -3 +- 22 4
7839 20 Dec 01 13:07 LAG2 21 0 10 2 +- 21 6 +- 13 1
7839 21 Dec 01 09:41 LAG1 10 0 20 23 +- 34 -6 +- 22 2
7839 21 Dec 01 11:19 LAG2 19 0 36 26 +- 25 9 +- 15 2
7839 23 Dec 01 17:33 LAG1 13 0 23 -22 +- 39 0 +- 24 3
7839 24 Dec 01 01:47 LAG2 8 0 21 33 +- 61 -27 +- 98 1
7839 24 Dec 01 01:56 LAG1 5 0 43 42 +- 43 19 +- 49 2
7839 24 Dec 01 05:27 LAG2 15 0 23 23 +- 24 0 +- 23 1
7839 24 Dec 01 05:29 LAG1 12 0 36 42 +- 45 4 +- 25 4
7839 27 Dec 01 19:07 LAG1 11 0 22 17 +- 30 -14 +- 46 2
7839 28 Dec 01 01:55 LAG2 6 0 17 33 +- 133 16 +- 126 2
7839 28 Dec 01 09:51 LAG2 19 0 35 13 +- 23 22 +- 13 2

Station 7840 (Herstmonceux) (Position fixed, acc. 20 mm)
7840 20 Dec 01 05:03 LAG2 12 0 12 0 +- 31 -16 +- 41 1
7840 20 Dec 01 07:33 LAG1 15 0 8 5 +- 29 -4 +- 18 3
7840 20 Dec 01 08:53 LAG2 13 0 5 2 +- 30 0 +- 25 4
7840 20 Dec 01 11:03 LAG1 12 0 8 5 +- 31 -1 +- 24 6
7840 20 Dec 01 13:08 LAG2 8 0 7 -5 +- 39 2 +- 33 5
7840 20 Dec 01 14:41 LAG1 8 0 17 17 +- 68 0 +- 51 3
7840 20 Dec 01 18:05 LAG1 13 0 10 -10 +- 30 1 +- 29 2
7840 22 Dec 01 04:49 LAG1 11 0 14 14 +- 33 1 +- 38 1
7840 22 Dec 01 05:15 LAG2 14 0 6 -1 +- 29 -5 +- 32 2
7840 22 Dec 01 08:21 LAG1 14 0 10 7 +- 28 -4 +- 18 3
7840 22 Dec 01 09:07 LAG2 20 0 7 0 +- 24 5 +- 17 2
7840 22 Dec 01 11:51 LAG1 12 0 4 2 +- 31 -1 +- 25 2
7840 22 Dec 01 13:15 LAG2 19 0 6 -1 +- 24 4 +- 18 1
7840 22 Dec 01 15:13 LAG1 15 0 3 1 +- 28 -1 +- 19 2
7840 23 Dec 01 06:57 LAG1 9 0 19 9 +- 36 -7 +- 18 3
7840 23 Dec 01 07:17 LAG2 16 0 11 1 +- 28 8 +- 23 4
7840 23 Dec 01 10:29 LAG1 13 0 9 0 +- 29 -6 +- 23 2
7840 23 Dec 01 11:17 LAG2 13 0 8 6 +- 32 5 +- 24 2
7840 23 Dec 01 13:53 LAG1 16 0 7 3 +- 27 -4 +- 17 2
7840 23 Dec 01 15:25 LAG2 13 0 22 -21 +- 30 3 +- 34 3
7840 23 Dec 01 17:27 LAG1 12 0 25 -25 +- 34 0 +- 30 2

Station 7845 (Grasse) (Position fixed, acc. 20 mm)
7845 20 Dec 01 14:29 LAG1 20 0 29 -32 +- 33 6 +- 16 14
7845 21 Dec 01 12:56 LAG1 23 0 43 -41 +- 22 2 +- 12 13
7845 21 Dec 01 15:25 LAG2 17 0 28 -36 +- 38 24 +- 25 8

Station 7849 (Mount Stromlo) (Position fixed, acc. 10 mm)
7849 20 Dec 01 14:49 LAG2 3 0 38 -51 +-1975 -40 +- 892 2
7849 20 Dec 01 16:15 LAG1 1 0 5 0 +- 0 0 +- 0 0
7849 20 Dec 01 19:41 LAG1 9 0 14 -9 +- 32 5 +- 17 2
7849 21 Dec 01 08:05 LAG1 3 0 7 -117 +-1043 -43 +- 392 1
7849 21 Dec 01 13:21 LAG2 6 0 9 -13 +- 212 2 +- 147 2
7849 21 Dec 01 17:06 LAG2 18 0 4 2 +- 23 0 +- 17 4
7849 22 Dec 01 07:03 LAG2 6 0 3 3 +- 42 -1 +- 35 1
7849 22 Dec 01 10:17 LAG1 5 0 23 2 +- 53 -9 +- 24 2
7849 22 Dec 01 11:02 LAG2 11 0 9 -1 +- 34 -6 +- 26 1
7849 23 Dec 01 08:55 LAG2 5 0 6 1 +- 43 -2 +- 19 3
7849 23 Dec 01 09:09 LAG1 6 0 21 -22 +- 41 -14 +- 64 2
7849 23 Dec 01 15:51 LAG1 1 0 13 0 +- 0 0 +- 0 0
7849 23 Dec 01 19:17 LAG1 15 0 6 -5 +- 29 -1 +- 19 2
7849 24 Dec 01 07:32 LAG1 9 0 27 -4 +- 44 -11 +- 21 9
7849 24 Dec 01 11:09 LAG2 3 0 16 -20 +- 914 -20 +- 502 1
7849 24 Dec 01 14:28 LAG1 4 1 40 31 +- 59 -27 +- 95 3
7849 24 Dec 01 15:27 LAG2 16 0 12 5 +- 24 -9 +- 19 3
7849 24 Dec 01 17:45 LAG1 2 0 27 -99 +-5563 -50 +-2233 0
7849 24 Dec 01 21:35 LAG1 8 0 11 11 +- 46 0 +- 79 3
7849 25 Dec 01 09:09 LAG2 14 0 6 7 +- 35 1 +- 25 1
7849 25 Dec 01 13:31 LAG2 7 0 6 0 +- 40 4 +- 36 4
7849 25 Dec 01 16:35 LAG1 14 0 9 4 +- 29 -7 +- 22 3
7849 25 Dec 01 17:31 LAG2 20 0 20 19 +- 21 2 +- 15 3
7849 25 Dec 01 20:03 LAG1 10 0 12 12 +- 32 2 +- 37 4
7849 26 Dec 01 11:55 LAG1 4 0 9 -34 +- 214 -30 +- 179 4
7849 26 Dec 01 15:13 LAG1 5 0 25 20 +- 138 -4 +- 124 3
7849 26 Dec 01 15:41 LAG2 13 0 10 4 +- 26 6 +- 18 3
7849 27 Dec 01 07:11 LAG1 12 0 19 5 +- 30 -18 +- 25 2
7849 27 Dec 01 09:25 LAG2 15 0 24 13 +- 24 13 +- 17 2
7849 27 Dec 01 13:35 LAG2 3 0 14 -26 +-1948 -5 +- 906 0
7849 27 Dec 01 14:03 LAG1 6 0 27 -27 +- 39 0 +- 89 2
7849 27 Dec 01 17:15 LAG1 14 0 10 -9 +- 25 -1 +- 17 4
7849 28 Dec 01 09:19 LAG1 8 0 6 0 +- 40 -6 +- 42 3
7849 29 Dec 01 05:59 LAG2 9 0 19 -34 +- 90 30 +- 59 4
7849 29 Dec 01 07:49 LAG1 2 0 46 0 +-4838 -18 +-1930 0
7849 29 Dec 01 09:43 LAG2 9 0 13 11 +- 59 -2 +- 53 1
7849 29 Dec 01 13:52 LAG2 1 0 10 0 +- 0 0 +- 0 0

Station 8834 (Wettzell) (Position fixed, acc. 10 mm)
8834 21 Dec 01 06:09 LAG1 7 0 43 -44 +- 37 -8 +- 22 4
8834 21 Dec 01 07:36 LAG2 2 0 35 -100 +- 434 32 +- 213 0
--------------------------------------------------------------------------------



Distribution of daytime, nighttime and twilight passes since Nov 1, 2000:
--------------------------------------------------------------------------
Station System Period Number of Passes
LAGEOS-1 LAGEOS-2
Day/Night/Twil. Day/Night/Twil. Total
--------------------------------------------------------------------------
1824 KIEVLA 010704 - 011214 0/ 12/ 0 0/ 17/ 0 29
1863 MDNLAS 010808 - 011118 0/ 9/ 0 0/ 5/ 0 14
1864 MD2LAS 011025 - 011227 0/ 4/ 0 0/ 8/ 0 12
1868 KOMLAS 010910 - 011126 0/ 7/ 0 0/ 5/ 0 12
1873 SIMLAS 010706 - 011014 0/ 31/ 0 0/ 41/ 0 72
1884 RIGLAS 010702 - 011214 0/ 29/ 0 0/ 29/ 4 62
1893 CRMLAS 010702 - 011026 0/ 27/ 0 0/ 33/ 0 60
7080 MLRS25 010703 - 011229 58/ 76/ 12 87/105/ 11 349
7090 ML0514 010701 - 011231 106/201/ 22 129/155/ 19 632
7105 ML0725 010701 - 011229 105/124/ 16 78/154/ 13 490
7110 ML0414 010701 - 011224 39/176/ 12 42/210/ 20 499
7124 ML0819 011101 - 011201 0/ 4/ 0 0/ 5/ 0 9
7210 HOLLAS 010703 - 011228 2/ 79/ 4 12/ 72/ 6 175
7231 WUHA01 010704 - 010806 0/ 2/ 0 0/ 1/ 0 3
7237 CHALAS 010708 - 011230 0/131/ 1 0/166/ 1 299
7249 BEJLAS 010704 - 011226 0/ 43/ 0 0/ 58/ 0 101
7339 TATLAS 010702 - 011012 27/ 1/ 0 16/ 0/ 0 44
7356 TROS01 010824 - 011229 0/ 61/ 0 0/ 52/ 0 113
7403 TLRS3 010704 - 011213 4/ 48/ 1 2/ 49/ 2 106
7501 ML0616 010701 - 011229 62/ 81/ 4 85/ 68/ 10 310
7548 CAGLAS 010718 - 011102 0/ 4/ 0 0/ 3/ 0 7
7806 METLAS 010702 - 011231 0/ 21/ 3 0/ 14/ 1 39
7810 ZIMLAT 010701 - 011231 147/ 92/ 14 81/105/ 12 451
7811 POLLAS 010701 - 011214 0/ 42/ 0 0/ 43/ 0 85
7820 YSLR01 011012 - 011227 0/ 17/ 1 0/ 16/ 0 34
7824 SPNLAS 010705 - 011227 0/ 27/ 1 0/ 30/ 0 58
7832 SALRO 010701 - 011231 136/ 42/ 10 130/ 34/ 11 363
7835 GRASSE 010701 - 011229 76/141/ 21 44/146/ 15 443
7836 GFZLAS 010701 - 011214 0/ 46/ 4 1/ 49/ 6 106
7837 CHILAS 010702 - 011230 0/ 73/ 1 0/ 92/ 1 167
7838 SHOLAS 010704 - 011228 5/ 59/ 5 12/ 73/ 3 157
7839 AUSLAS 010702 - 011228 95/113/ 18 72/ 99/ 15 412
7840 RGOLAS 010701 - 011231 182/109/ 24 90/115/ 19 539
7845 GRASLL 010701 - 011221 65/ 49/ 13 28/ 52/ 6 213
7849 MSLO01 010701 - 011231 70/145/ 12 79/ 77/ 22 405
7941 MLROnn 010703 - 011212 45/ 18/ 4 20/ 17/ 3 107
8834 WLRS01 010701 - 011221 92/ 40/ 11 49/ 85/ 14 291
--------------------------------------------------------------------------


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)
--------------------------------------------------------------
011223.0 -170.7 +/- 0.1 259.8 +/- 0.1 -32109.44 +/- 0.01
011226.0 -171.9 +/- 0.1 271.6 +/- 0.1 -32112.99 +/- 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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