| Date: | 2005-06-21 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5519: Delft QL Report June 21, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-06-21 13:15:00 UTC Message No. 5519 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report June 21, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS June 21, 2005 This is a daily 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 Tue, Jun 21, 2005. Questions and comments should be addressed to: R. Noomen Delft University of Technology Faculty of Aerospace Engineering Delft Institute for Earth-Oriented Space Research Kluyverweg 1 2629 HS Delft The Netherlands Telephone: +31-15-2785377 Telefax : +31-15-2785322 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 Tue, Jun 21, 2005. 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 ------------------------------------------------------------------------------ 1831 Lviv, Ukraine 050620 - 050620 1 1 1864 Maidanak, Uzbekistan (site 2) 050619 - 050619 1 - 1884 Riga, Latvia 050619 - 050620 2 1 6810 Zimmerwald 846, Switzerland 050619 - 050621 9 6 7090 Yarragadee, Australia 050619 - 050620 1 3 7124 Papeete, Tahiti 050620 - 050620 1 - 7355 Urumqi, China (TROS) 050619 - 050619 1 - 7501 Hartebeesthoek, SA (MOB-6) 050619 - 050620 1 3 7810 Zimmerwald 423, Switzerland 050619 - 050621 9 6 7811 Borowiec, Poland 050620 - 050621 2 1 7824 San Fernando, Spain 050620 - 050620 1 1 7825 Mount Stromlo, Australia 050618 - 050620 4 3 7832 Riyad, Saudi Arabia 050619 - 050620 3 3 7838 Simosato Observatory, Japan 050620 - 050620 1 - 7839 Graz, Austria 050618 - 050621 5 5 7840 Herstmonceux, United Kingdom 050619 - 050620 4 2 7848 Ajaccio, Corsica (FTLRS) 050619 - 050621 1 1 7941 Matera, Italy (MLRO 532) 050619 - 050620 2 5 8834 Wettzell, Germany 050618 - 050621 7 7 ------ ------ --- --- TOTAL 050618 - 050621 56 48 ------------------------------------------------------------------------------ B. ANALYSIS RESULTS The analysis is based on two orbit solutions using global quick-look normal points that cover a period of 8 days which are computed simultaneously. This week´s data interval runs from Mon, Jun 13, 2005 to Tue, Jun 21, 2005. The measurement and dynamic models used in this analysis are close to the IERS Standard. The overall model is referred to as QLDACMOD11. The details of this model can be obtained on request. The terrestrial reference frame is provided by the ITRF2000 station coordinates solution (extended with coordinates of new stations, where necessary). The general statistics and results of this week´s analysis are thus: ----------------------------------------------------------------------- Satellite LAGEOS-1 LAGEOS-2 Number of Stations 24 21 Number of Passes 209/209 166/166 Number of Normal Points 2132/2111 1906/1885 Weighted RMS of Fit (mm) 13 12 ----------------------------------------------------------------------- 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 1831 (Lviv) (position fixed, acc. 400 mm) 1831 13 Jun 05 20:28 LAG1 1 0 104 0 +- 0 0 +- 0 0 1831 14 Jun 05 22:31 LAG1 9 0 30 -12 +- 413 24 +- 441 10 1831 15 Jun 05 21:12 LAG1 5 0 96 93 +- 540 28 +-1237 5 1831 20 Jun 05 20:56 LAG2 5 0 51 -38 +- 571 99 +-1146 9 1831 20 Jun 05 21:23 LAG1 8 0 99 101 +- 440 53 +- 558 10 Station 1864 (Maidanak) (position fixed, acc. 200 mm) 1864 13 Jun 05 18:23 LAG2 10 0 46 44 +- 198 1 +- 155 7 1864 13 Jun 05 20:07 LAG1 11 0 31 27 +- 181 -2 +- 88 13 1864 14 Jun 05 16:28 LAG2 9 0 39 31 +- 202 14 +- 167 9 1864 14 Jun 05 18:45 LAG1 9 0 36 27 +- 203 -4 +- 107 19 1864 15 Jun 05 17:27 LAG1 6 0 23 25 +- 312 4 +- 306 7 1864 15 Jun 05 18:37 LAG2 10 0 13 10 +- 196 0 +- 183 9 1864 16 Jun 05 16:39 LAG2 12 0 22 5 +- 173 10 +- 108 13 1864 16 Jun 05 19:33 LAG1 11 0 30 21 +- 181 -6 +- 98 16 1864 19 Jun 05 19:09 LAG1 9 0 33 16 +- 201 -4 +- 213 29 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 13 Jun 05 23:45 LAG1 5 0 131 131 +- 271 -4 +- 122 19 1873 14 Jun 05 20:39 LAG2 4 0 113 132 +-2347 -10 +-1317 11 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 14 Jun 05 22:27 LAG1 13 0 27 28 +- 87 -6 +- 69 4 1884 16 Jun 05 16:29 LAG2 13 0 31 -38 +- 118 7 +- 85 4 1884 19 Jun 05 22:36 LAG1 16 0 6 -3 +- 75 0 +- 50 4 1884 20 Jun 05 17:08 LAG2 6 0 25 -46 +- 653 12 +- 362 5 1884 20 Jun 05 21:13 LAG1 16 0 7 4 +- 75 2 +- 56 4 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 15 Jun 05 08:43 LAG1 4 0 22 -18 +- 91 -3 +- 31 6 6810 15 Jun 05 10:01 LAG2 11 0 32 -31 +- 55 5 +- 41 3 6810 15 Jun 05 12:33 LAG1 6 0 23 -23 +- 75 2 +- 89 3 6810 15 Jun 05 14:13 LAG2 12 0 15 -18 +- 80 4 +- 54 2 6810 15 Jun 05 21:11 LAG1 9 0 23 -21 +- 62 -6 +- 73 2 6810 15 Jun 05 22:11 LAG2 5 0 15 -19 +- 137 -5 +- 117 3 6810 16 Jun 05 04:15 LAG1 8 0 9 -9 +- 64 0 +- 79 3 6810 16 Jun 05 11:15 LAG1 9 0 19 -15 +- 66 -6 +- 78 6 6810 16 Jun 05 20:09 LAG2 17 0 21 -18 +- 44 -4 +- 24 4 6810 16 Jun 05 23:05 LAG1 23 0 16 -15 +- 41 -6 +- 20 3 6810 17 Jun 05 02:41 LAG1 20 0 20 -19 +- 42 1 +- 24 4 6810 17 Jun 05 06:19 LAG1 17 0 27 -25 +- 57 0 +- 33 6 6810 17 Jun 05 09:34 LAG1 21 0 15 -12 +- 40 -3 +- 21 4 6810 17 Jun 05 10:17 LAG2 12 0 29 -27 +- 53 5 +- 51 2 6810 17 Jun 05 14:49 LAG2 4 0 11 -44 +-1696 14 +- 711 5 6810 17 Jun 05 18:25 LAG2 18 0 14 -11 +- 45 -3 +- 30 2 6810 17 Jun 05 21:45 LAG1 15 0 17 -15 +- 59 1 +- 35 3 6810 17 Jun 05 22:22 LAG2 13 0 31 -24 +- 68 -6 +- 46 4 6810 18 Jun 05 01:17 LAG1 22 0 23 -15 +- 39 8 +- 19 4 6810 18 Jun 05 04:55 LAG1 14 0 28 -26 +- 49 10 +- 32 2 6810 18 Jun 05 08:12 LAG1 14 0 22 -21 +- 57 0 +- 28 4 6810 18 Jun 05 11:51 LAG1 17 0 38 -31 +- 44 -13 +- 32 9 6810 18 Jun 05 12:15 LAG2 16 0 20 -19 +- 48 -1 +- 25 3 6810 18 Jun 05 16:29 LAG2 19 0 24 -23 +- 45 -1 +- 31 2 6810 18 Jun 05 20:21 LAG2 12 0 21 -20 +- 56 -8 +- 32 3 6810 18 Jun 05 20:23 LAG1 6 0 32 -22 +- 110 10 +- 94 2 6810 18 Jun 05 23:55 LAG1 21 0 15 -13 +- 42 -2 +- 19 7 6810 19 Jun 05 03:29 LAG1 16 0 20 -19 +- 51 1 +- 34 3 6810 19 Jun 05 07:07 LAG1 16 0 49 -35 +- 63 -9 +- 35 3 6810 19 Jun 05 10:19 LAG1 19 0 35 -8 +- 42 -17 +- 21 10 6810 19 Jun 05 10:21 LAG2 15 0 37 -41 +- 52 -13 +- 34 2 6810 19 Jun 05 14:19 LAG2 17 0 22 -22 +- 48 10 +- 27 3 6810 19 Jun 05 18:32 LAG2 22 0 17 -15 +- 40 -2 +- 21 3 6810 19 Jun 05 22:35 LAG1 21 0 18 -12 +- 40 -4 +- 18 8 6810 20 Jun 05 02:07 LAG1 23 0 11 3 +- 38 4 +- 20 6 6810 20 Jun 05 05:44 LAG1 12 0 14 -14 +- 56 7 +- 40 2 6810 20 Jun 05 09:45 LAG1 4 0 26 103 +-4718 -44 +-1619 1 6810 20 Jun 05 12:23 LAG2 18 0 25 -25 +- 43 1 +- 22 2 6810 20 Jun 05 16:44 LAG2 20 0 15 -14 +- 48 0 +- 30 3 6810 20 Jun 05 20:37 LAG2 23 0 8 -6 +- 38 0 +- 24 4 6810 20 Jun 05 21:09 LAG1 10 0 36 -34 +- 59 1 +- 27 6 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 15 Jun 05 06:40 LAG1 4 0 5 27 +- 614 -8 +- 228 0 7080 15 Jun 05 07:55 LAG2 5 0 21 32 +- 116 -13 +- 135 1 7080 15 Jun 05 09:52 LAG1 7 0 12 17 +- 53 -6 +- 48 2 7080 16 Jun 05 02:17 LAG2 2 0 11 103 +-6807 -52 +-3088 0 7080 16 Jun 05 05:17 LAG1 3 0 4 23 +- 850 -12 +- 391 2 7080 16 Jun 05 05:42 LAG2 19 0 12 10 +- 15 3 +- 11 3 7080 17 Jun 05 07:01 LAG1 15 0 16 14 +- 17 -5 +- 11 4 7080 18 Jun 05 02:17 LAG2 5 0 13 20 +- 129 -5 +- 76 3 7080 18 Jun 05 05:57 LAG1 6 0 5 20 +- 121 -8 +- 64 1 7080 18 Jun 05 06:16 LAG2 7 0 8 12 +- 83 -3 +- 62 2 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 13 Jun 05 03:28 LAG1 7 0 18 -32 +- 34 -15 +- 25 7 7090 13 Jun 05 10:21 LAG1 3 0 1 0 +- 40 4 +- 154 0 7090 13 Jun 05 13:25 LAG1 22 0 11 -10 +- 8 2 +- 4 2 7090 13 Jun 05 15:23 LAG2 18 0 5 -5 +- 13 4 +- 10 3 7090 13 Jun 05 17:03 LAG1 9 0 10 0 +- 26 10 +- 25 2 7090 13 Jun 05 19:37 LAG2 12 0 16 9 +- 31 -15 +- 19 3 7090 13 Jun 05 23:37 LAG2 13 0 7 -7 +- 14 -9 +- 14 2 7090 14 Jun 05 03:48 LAG2 7 0 5 0 +- 31 0 +- 33 5 7090 14 Jun 05 05:51 LAG1 6 0 8 -6 +- 34 -1 +- 34 2 7090 14 Jun 05 12:11 LAG1 13 0 7 -4 +- 12 -1 +- 7 3 7090 14 Jun 05 15:39 LAG1 23 0 12 -11 +- 9 4 +- 5 2 7090 14 Jun 05 17:07 LAG2 32 0 4 0 +- 7 -1 +- 4 2 7090 14 Jun 05 21:29 LAG2 22 0 8 -1 +- 9 -7 +- 8 1 7090 15 Jun 05 02:01 LAG2 4 0 12 -5 +- 56 11 +- 86 1 7090 15 Jun 05 04:11 LAG1 9 0 13 -27 +- 41 -9 +- 22 7 7090 15 Jun 05 11:01 LAG1 8 0 2 1 +- 14 0 +- 21 1 7090 16 Jun 05 06:32 LAG1 2 0 7 -13 +- 105 -38 +- 213 0 7090 16 Jun 05 09:51 LAG1 4 0 9 -8 +- 22 -12 +- 94 0 7090 16 Jun 05 12:52 LAG1 12 0 18 -9 +- 12 7 +- 5 2 7090 16 Jun 05 13:43 LAG2 5 0 19 -20 +- 19 -5 +- 49 2 7090 16 Jun 05 16:35 LAG1 3 0 9 -3 +- 103 6 +- 108 0 7090 18 Jun 05 10:31 LAG1 4 0 9 -5 +- 39 8 +- 93 2 7090 18 Jun 05 13:39 LAG1 10 0 12 3 +- 20 7 +- 11 1 7090 18 Jun 05 14:03 LAG2 7 0 3 0 +- 24 7 +- 44 1 7090 18 Jun 05 17:21 LAG1 6 0 10 -9 +- 40 0 +- 49 1 7090 18 Jun 05 17:39 LAG2 18 0 8 6 +- 10 -3 +- 7 2 7090 18 Jun 05 21:59 LAG2 11 0 12 -10 +- 44 1 +- 32 2 7090 19 Jun 05 15:43 LAG2 8 0 2 0 +- 15 1 +- 9 1 7090 19 Jun 05 15:47 LAG1 14 0 8 -1 +- 11 3 +- 5 1 7090 19 Jun 05 19:55 LAG2 19 0 27 16 +- 9 -17 +- 6 3 7090 20 Jun 05 00:19 LAG2 20 0 10 -7 +- 9 3 +- 7 3 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 16 Jun 05 23:55 LAG2 12 0 6 1 +- 13 -2 +- 7 5 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 17 Jun 05 17:27 LAG1 7 0 3 6 +- 52 -1 +- 30 1 7110 17 Jun 05 20:57 LAG1 4 0 16 -18 +- 35 14 +- 102 6 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 15 Jun 05 07:11 LAG1 5 0 11 28 +- 116 -20 +- 63 2 7124 16 Jun 05 09:09 LAG1 1 0 11 0 +- 0 0 +- 0 0 7124 17 Jun 05 07:35 LAG1 3 0 33 -51 +- 278 -42 +- 140 2 7124 20 Jun 05 07:02 LAG1 3 0 36 -14 +- 217 -29 +- 124 3 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 13 Jun 05 14:45 LAG2 8 0 13 4 +- 62 6 +- 74 11 7249 13 Jun 05 16:45 LAG1 7 0 10 -10 +- 174 1 +- 100 5 7249 14 Jun 05 18:46 LAG1 9 0 10 0 +- 76 1 +- 64 10 Station 7355 (Urumqi) (position solved, acc. 10 mm) 7355 15 Jun 05 17:26 LAG1 13 0 11 -6 +- 14 0 +- 10 9 7355 15 Jun 05 21:01 LAG1 6 1 4 -1 +- 29 -2 +- 43 2 7355 16 Jun 05 19:44 LAG1 9 1 18 15 +- 43 -12 +- 24 15 7355 17 Jun 05 18:15 LAG1 14 1 33 22 +- 15 6 +- 9 14 7355 18 Jun 05 20:25 LAG1 13 0 9 8 +- 15 0 +- 10 6 7355 19 Jun 05 19:01 LAG1 12 0 28 -26 +- 12 8 +- 9 10 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 13 Jun 05 01:01 LAG2 11 0 20 1 +- 38 13 +- 26 1 7501 13 Jun 05 09:13 LAG2 13 0 6 8 +- 15 5 +- 13 2 7501 13 Jun 05 10:57 LAG1 12 0 8 2 +- 14 0 +- 15 7 7501 13 Jun 05 17:35 LAG1 12 0 15 8 +- 13 9 +- 13 2 7501 13 Jun 05 20:55 LAG1 20 0 15 14 +- 10 1 +- 5 2 7501 13 Jun 05 22:41 LAG2 17 0 9 5 +- 10 4 +- 6 2 7501 14 Jun 05 03:23 LAG2 10 0 12 -1 +- 50 11 +- 40 1 7501 14 Jun 05 07:09 LAG2 10 0 22 -9 +- 62 7 +- 33 1 7501 14 Jun 05 09:25 LAG1 9 0 3 -13 +- 55 -5 +- 26 1 7501 14 Jun 05 13:07 LAG1 10 0 9 9 +- 15 0 +- 18 2 7501 14 Jun 05 19:35 LAG1 14 0 20 20 +- 11 -1 +- 6 2 7501 14 Jun 05 21:05 LAG2 5 0 14 13 +- 22 2 +- 61 1 7501 15 Jun 05 01:33 LAG2 4 0 27 168 +- 496 -75 +- 262 4 7501 15 Jun 05 05:33 LAG2 9 0 5 -2 +- 18 9 +- 28 1 7501 15 Jun 05 09:37 LAG2 9 0 12 8 +- 15 9 +- 22 1 7501 15 Jun 05 11:44 LAG1 17 0 7 -1 +- 11 4 +- 7 4 7501 15 Jun 05 22:17 LAG1 2 0 15 33 +-2200 -19 +- 884 0 7501 16 Jun 05 17:07 LAG1 8 0 15 9 +- 19 10 +- 26 0 7501 16 Jun 05 20:35 LAG1 10 0 7 11 +- 23 -3 +- 11 2 7501 16 Jun 05 21:07 LAG2 20 0 15 3 +- 10 9 +- 7 2 7501 17 Jun 05 08:53 LAG1 10 0 11 -5 +- 33 1 +- 19 7 7501 17 Jun 05 09:41 LAG2 8 0 16 15 +- 45 26 +- 39 3 7501 17 Jun 05 12:31 LAG1 13 0 9 0 +- 12 10 +- 13 3 7501 19 Jun 05 19:51 LAG1 7 0 15 15 +- 17 0 +- 10 3 7501 19 Jun 05 23:21 LAG2 17 0 15 -8 +- 10 7 +- 7 5 7501 20 Jun 05 03:45 LAG2 24 0 12 11 +- 8 -6 +- 7 3 7501 20 Jun 05 07:51 LAG2 14 0 30 -12 +- 29 -24 +- 17 4 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 13 Jun 05 04:43 LAG1 2 0 14 80 +-3013 55 +-1770 0 7810 15 Jun 05 08:47 LAG1 2 0 6 1 +- 129 -2 +- 45 0 7810 15 Jun 05 10:07 LAG2 7 0 18 -17 +- 69 4 +- 61 4 7810 15 Jun 05 12:33 LAG1 6 0 9 -8 +- 74 -6 +- 91 1 7810 15 Jun 05 14:13 LAG2 11 0 3 -1 +- 82 0 +- 59 2 7810 15 Jun 05 21:21 LAG1 6 0 9 5 +- 160 -15 +- 188 0 7810 15 Jun 05 22:10 LAG2 2 0 11 10 +- 516 0 +- 388 0 7810 16 Jun 05 04:15 LAG1 8 0 4 -3 +- 64 0 +- 78 2 7810 16 Jun 05 11:15 LAG1 8 0 5 -3 +- 66 -5 +- 103 2 7810 16 Jun 05 20:19 LAG2 11 0 11 -5 +- 60 -4 +- 38 4 7810 16 Jun 05 23:09 LAG1 22 0 15 -4 +- 40 -7 +- 21 4 7810 17 Jun 05 02:45 LAG1 16 0 7 -7 +- 46 1 +- 29 3 7810 17 Jun 05 06:19 LAG1 16 0 12 -13 +- 57 1 +- 35 2 7810 17 Jun 05 09:35 LAG1 21 0 7 4 +- 40 -1 +- 21 5 7810 17 Jun 05 10:17 LAG2 9 0 13 -9 +- 65 5 +- 58 4 7810 17 Jun 05 14:49 LAG2 4 0 7 -50 +-1761 24 +- 738 0 7810 17 Jun 05 18:26 LAG2 17 0 8 -1 +- 49 -4 +- 32 2 7810 17 Jun 05 21:46 LAG1 13 0 3 -2 +- 76 0 +- 49 1 7810 17 Jun 05 22:23 LAG2 13 0 18 -8 +- 68 -7 +- 46 3 7810 18 Jun 05 01:19 LAG1 19 0 15 -1 +- 42 7 +- 21 3 7810 18 Jun 05 04:55 LAG1 15 0 18 -14 +- 49 9 +- 29 2 7810 18 Jun 05 08:29 LAG1 13 0 8 0 +- 72 -3 +- 36 4 7810 18 Jun 05 11:51 LAG1 15 0 26 -15 +- 47 -14 +- 35 13 7810 18 Jun 05 12:15 LAG2 17 0 5 -2 +- 48 -1 +- 24 4 7810 18 Jun 05 16:31 LAG2 18 0 9 -7 +- 49 -2 +- 33 2 7810 18 Jun 05 20:21 LAG2 12 0 13 -5 +- 56 -8 +- 32 2 7810 18 Jun 05 20:27 LAG1 5 0 16 -5 +- 111 11 +- 113 4 7810 18 Jun 05 23:56 LAG1 18 0 7 0 +- 45 -2 +- 22 6 7810 19 Jun 05 03:29 LAG1 17 0 6 -3 +- 47 1 +- 31 3 7810 19 Jun 05 07:07 LAG1 17 0 40 -24 +- 63 -10 +- 33 4 7810 19 Jun 05 10:24 LAG1 16 0 29 9 +- 46 -15 +- 27 5 7810 19 Jun 05 10:26 LAG2 12 0 33 -29 +- 53 -12 +- 36 5 7810 19 Jun 05 14:19 LAG2 18 0 13 -10 +- 48 7 +- 26 4 7810 19 Jun 05 18:33 LAG2 21 0 7 -3 +- 40 -3 +- 22 2 7810 19 Jun 05 22:35 LAG1 21 0 13 -3 +- 40 -3 +- 18 8 7810 20 Jun 05 02:09 LAG1 21 0 12 9 +- 39 3 +- 22 5 7810 20 Jun 05 05:45 LAG1 11 0 13 -11 +- 57 8 +- 46 3 7810 20 Jun 05 09:45 LAG1 3 0 9 111 +-6385 -41 +-2206 1 7810 20 Jun 05 12:23 LAG2 18 0 14 -13 +- 43 2 +- 22 3 7810 20 Jun 05 16:47 LAG2 17 0 7 -5 +- 53 0 +- 36 2 7810 20 Jun 05 20:37 LAG2 24 0 5 2 +- 37 0 +- 23 4 7810 20 Jun 05 21:19 LAG1 5 0 23 -23 +- 84 1 +- 43 4 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 20 Jun 05 20:47 LAG2 14 0 31 28 +- 50 6 +- 49 8 7811 20 Jun 05 21:19 LAG1 13 0 11 10 +- 50 -2 +- 47 3 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 13 Jun 05 22:25 LAG2 3 0 35 166 +- 376 -72 +- 183 6 7824 14 Jun 05 20:23 LAG2 12 0 49 90 +- 120 -23 +- 63 2 7824 14 Jun 05 22:51 LAG1 8 0 54 68 +- 84 -11 +- 61 3 7824 15 Jun 05 02:17 LAG1 13 0 54 53 +- 40 1 +- 26 5 7824 15 Jun 05 22:12 LAG2 10 0 54 58 +- 43 -9 +- 24 5 7824 16 Jun 05 01:15 LAG1 3 0 56 97 +- 972 -19 +- 447 0 7824 17 Jun 05 00:35 LAG2 5 0 44 42 +- 190 1 +- 213 5 7824 17 Jun 05 03:07 LAG1 3 0 57 63 +- 155 16 +- 405 1 7824 17 Jun 05 22:21 LAG1 5 0 51 50 +- 146 0 +- 153 2 7824 18 Jun 05 01:42 LAG1 6 0 73 68 +- 53 7 +- 36 3 7824 20 Jun 05 20:47 LAG2 11 0 58 59 +- 37 -2 +- 26 4 7824 20 Jun 05 21:37 LAG1 4 0 22 25 +- 144 5 +- 271 1 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 13 Jun 05 00:01 LAG1 2 0 9 -16 +- 271 11 +- 493 0 7825 13 Jun 05 01:43 LAG2 12 0 8 5 +- 18 -2 +- 16 3 7825 13 Jun 05 03:21 LAG1 10 0 9 2 +- 13 -8 +- 13 5 7825 13 Jun 05 19:33 LAG2 2 0 55 -1639 +-2408 -883 +-1259 0 7825 13 Jun 05 23:45 LAG2 5 0 16 2 +- 61 -6 +- 30 3 7825 14 Jun 05 01:45 LAG1 18 0 9 -5 +- 11 -5 +- 6 3 7825 14 Jun 05 05:19 LAG1 12 0 1 0 +- 12 0 +- 10 1 7825 14 Jun 05 08:37 LAG1 7 0 25 -13 +- 15 -11 +- 9 2 7825 14 Jun 05 11:57 LAG1 18 0 13 -8 +- 10 -6 +- 5 3 7825 14 Jun 05 13:29 LAG2 24 0 4 1 +- 8 -3 +- 6 2 7825 14 Jun 05 17:29 LAG2 27 0 5 0 +- 8 -3 +- 5 2 7825 14 Jun 05 21:49 LAG2 18 0 8 -2 +- 10 -4 +- 6 4 7825 15 Jun 05 00:25 LAG1 15 0 16 -3 +- 14 -12 +- 10 3 7825 15 Jun 05 07:37 LAG1 7 0 10 13 +- 33 -19 +- 34 2 7825 15 Jun 05 11:14 LAG1 1 0 19 0 +- 0 0 +- 0 0 7825 15 Jun 05 14:27 LAG1 11 0 9 -13 +- 19 10 +- 16 2 7825 16 Jun 05 09:21 LAG1 12 0 4 0 +- 16 -2 +- 12 3 7825 16 Jun 05 17:44 LAG2 16 0 8 9 +- 17 7 +- 13 5 7825 16 Jun 05 21:59 LAG2 10 1 8 13 +- 107 10 +- 52 2 7825 17 Jun 05 02:09 LAG2 9 1 10 19 +- 43 22 +- 39 3 7825 17 Jun 05 04:45 LAG1 10 0 8 5 +- 13 0 +- 8 6 7825 17 Jun 05 08:07 LAG1 14 0 11 -8 +- 11 -4 +- 10 5 7825 17 Jun 05 11:23 LAG1 14 0 11 -1 +- 14 3 +- 7 8 7825 17 Jun 05 11:59 LAG2 14 0 6 1 +- 12 2 +- 12 6 7825 17 Jun 05 15:11 LAG1 10 0 7 2 +- 13 3 +- 24 6 7825 17 Jun 05 15:45 LAG2 22 0 8 7 +- 9 1 +- 5 4 7825 17 Jun 05 20:07 LAG2 20 0 2 0 +- 9 0 +- 6 2 7825 17 Jun 05 23:59 LAG1 4 0 7 4 +- 153 8 +- 118 1 7825 18 Jun 05 04:01 LAG1 3 0 9 -46 +- 842 14 +- 333 1 7825 18 Jun 05 06:55 LAG1 8 0 11 -9 +- 15 -1 +- 14 5 7825 19 Jun 05 08:51 LAG1 8 0 34 -21 +- 15 -20 +- 9 3 7825 19 Jun 05 12:15 LAG1 3 0 15 4 +- 495 -4 +- 206 0 7825 19 Jun 05 12:20 LAG2 3 0 12 19 +- 51 71 +- 145 2 7825 19 Jun 05 20:29 LAG2 17 0 12 3 +- 11 -10 +- 9 2 7825 20 Jun 05 00:37 LAG2 2 0 25 -30 +- 753 -4 +- 582 0 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 13 Jun 05 14:23 LAG2 6 0 9 -4 +- 81 1 +- 92 8 7832 13 Jun 05 18:11 LAG2 12 0 6 4 +- 21 -1 +- 13 2 7832 13 Jun 05 20:27 LAG1 9 0 7 -7 +- 25 -4 +- 24 3 7832 14 Jun 05 00:07 LAG1 4 0 2 -7 +- 126 9 +- 142 1 7832 14 Jun 05 16:19 LAG2 7 0 18 -19 +- 102 0 +- 74 2 7832 14 Jun 05 18:59 LAG1 10 0 10 7 +- 20 -4 +- 13 3 7832 14 Jun 05 20:21 LAG2 11 0 15 13 +- 46 -1 +- 31 2 7832 14 Jun 05 22:27 LAG1 14 0 14 -12 +- 21 -11 +- 15 4 7832 15 Jun 05 08:45 LAG1 8 0 8 6 +- 33 -6 +- 35 6 7832 15 Jun 05 14:29 LAG2 7 0 8 -6 +- 26 6 +- 35 4 7832 15 Jun 05 18:24 LAG2 7 0 7 -5 +- 209 -5 +- 96 1 7832 17 Jun 05 21:55 LAG1 11 0 7 -5 +- 31 -7 +- 21 3 7832 18 Jun 05 16:45 LAG2 21 0 11 -9 +- 14 2 +- 10 4 7832 18 Jun 05 20:45 LAG1 8 0 8 -6 +- 23 -3 +- 27 3 7832 18 Jun 05 21:01 LAG2 8 0 7 0 +- 23 -4 +- 34 6 7832 19 Jun 05 15:01 LAG2 12 0 5 0 +- 22 6 +- 29 2 7832 19 Jun 05 18:53 LAG2 7 0 10 5 +- 27 -4 +- 17 1 7832 19 Jun 05 19:25 LAG1 7 0 2 1 +- 26 -2 +- 38 2 7832 19 Jun 05 22:45 LAG1 13 0 13 10 +- 18 -5 +- 17 3 7832 20 Jun 05 17:01 LAG2 16 0 2 -2 +- 19 0 +- 15 2 7832 20 Jun 05 18:09 LAG1 6 0 18 9 +- 65 8 +- 69 1 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 15 Jun 05 21:03 LAG1 2 0 23 25 +- 362 1 +- 219 0 7835 16 Jun 05 23:24 LAG1 1 0 6 0 +- 0 0 +- 0 0 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 13 Jun 05 00:41 LAG1 5 0 27 30 +- 117 -4 +- 102 8 7838 13 Jun 05 02:23 LAG2 11 0 71 69 +- 28 2 +- 22 17 7838 13 Jun 05 10:41 LAG2 19 0 38 38 +- 22 -2 +- 17 5 7838 13 Jun 05 13:01 LAG1 6 0 30 31 +- 40 -18 +- 75 3 7838 20 Jun 05 01:26 LAG1 6 0 33 29 +- 39 10 +- 28 4 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 13 Jun 05 08:19 LAG1 12 0 5 -4 +- 29 0 +- 13 2 7839 13 Jun 05 09:57 LAG2 9 0 4 2 +- 14 4 +- 16 1 7839 13 Jun 05 11:41 LAG1 15 0 12 9 +- 11 -9 +- 10 5 7839 13 Jun 05 14:07 LAG2 13 0 2 -4 +- 25 2 +- 14 0 7839 13 Jun 05 17:49 LAG2 20 0 2 -2 +- 9 0 +- 6 0 7839 13 Jun 05 20:19 LAG1 8 0 9 6 +- 17 -7 +- 30 0 7839 13 Jun 05 22:01 LAG2 13 0 10 3 +- 12 -7 +- 8 0 7839 13 Jun 05 23:43 LAG1 16 0 6 -5 +- 10 0 +- 4 2 7839 14 Jun 05 03:21 LAG1 16 0 7 -3 +- 11 5 +- 6 1 7839 14 Jun 05 06:51 LAG1 10 0 2 2 +- 14 0 +- 13 1 7839 14 Jun 05 10:25 LAG1 6 0 10 14 +- 23 -9 +- 23 1 7839 15 Jun 05 05:29 LAG1 12 0 9 4 +- 14 4 +- 10 0 7839 15 Jun 05 10:10 LAG2 9 0 5 -1 +- 14 5 +- 15 1 7839 16 Jun 05 19:41 LAG1 11 0 3 0 +- 13 -6 +- 21 1 7839 16 Jun 05 20:22 LAG2 12 0 11 -6 +- 14 -4 +- 8 1 7839 17 Jun 05 06:15 LAG1 9 0 10 -10 +- 14 1 +- 12 1 7839 17 Jun 05 09:45 LAG1 11 0 8 8 +- 12 -1 +- 10 1 7839 18 Jun 05 20:21 LAG1 12 0 9 -3 +- 13 4 +- 9 3 7839 18 Jun 05 20:22 LAG2 14 0 15 -1 +- 12 -8 +- 6 1 7839 18 Jun 05 23:57 LAG1 16 0 9 1 +- 10 -4 +- 4 1 7839 19 Jun 05 18:59 LAG2 13 0 6 2 +- 36 -4 +- 17 1 7839 19 Jun 05 22:35 LAG1 8 0 8 6 +- 25 -1 +- 12 1 7839 19 Jun 05 22:37 LAG2 9 0 15 -14 +- 14 -4 +- 15 2 7839 20 Jun 05 09:05 LAG1 14 0 6 6 +- 11 -1 +- 6 2 7839 20 Jun 05 12:33 LAG2 16 0 6 -5 +- 12 3 +- 6 3 7839 20 Jun 05 16:49 LAG2 12 0 2 -1 +- 12 1 +- 12 0 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 13 Jun 05 00:00 LAG2 7 0 35 -26 +- 71 -8 +- 67 1 7840 13 Jun 05 01:25 LAG1 12 0 8 4 +- 26 -5 +- 14 2 7840 13 Jun 05 04:45 LAG1 15 0 9 9 +- 17 0 +- 12 2 7840 13 Jun 05 08:21 LAG1 10 0 9 13 +- 35 -3 +- 19 1 7840 13 Jun 05 11:49 LAG1 14 0 8 3 +- 18 -5 +- 17 6 7840 13 Jun 05 13:49 LAG2 18 0 12 9 +- 16 4 +- 11 3 7840 13 Jun 05 17:49 LAG2 21 0 6 6 +- 14 0 +- 9 2 7840 13 Jun 05 21:57 LAG2 14 0 14 0 +- 18 -11 +- 14 2 7840 13 Jun 05 23:45 LAG1 23 0 9 0 +- 13 -4 +- 7 3 7840 14 Jun 05 03:21 LAG1 18 0 7 5 +- 15 1 +- 9 3 7840 14 Jun 05 07:01 LAG1 6 0 13 14 +- 34 -2 +- 49 1 7840 14 Jun 05 10:17 LAG1 11 0 16 12 +- 21 -4 +- 13 2 7840 14 Jun 05 12:21 LAG2 4 0 19 20 +- 245 0 +- 159 1 7840 14 Jun 05 15:58 LAG2 13 0 16 7 +- 21 6 +- 14 2 7840 14 Jun 05 19:55 LAG2 22 0 6 4 +- 14 -3 +- 8 2 7840 14 Jun 05 22:23 LAG1 16 0 22 10 +- 16 -11 +- 10 2 7840 15 Jun 05 00:01 LAG2 10 0 3 -2 +- 20 -2 +- 36 1 7840 15 Jun 05 01:57 LAG1 17 0 9 0 +- 16 -3 +- 7 6 7840 15 Jun 05 18:07 LAG2 19 0 13 13 +- 16 -5 +- 10 3 7840 15 Jun 05 21:12 LAG1 3 0 10 5 +- 77 -14 +- 238 1 7840 15 Jun 05 22:11 LAG2 6 0 4 -2 +- 46 -7 +- 61 0 7840 17 Jun 05 09:45 LAG1 7 0 11 13 +- 53 1 +- 36 1 7840 17 Jun 05 14:44 LAG2 4 0 22 40 +- 489 -7 +- 216 1 7840 17 Jun 05 18:19 LAG2 15 0 13 11 +- 17 -3 +- 12 3 7840 17 Jun 05 21:51 LAG1 7 0 2 3 +- 31 2 +- 36 0 7840 17 Jun 05 22:43 LAG2 6 0 22 -3 +- 161 -11 +- 97 2 7840 18 Jun 05 01:25 LAG1 21 0 12 8 +- 14 3 +- 7 3 7840 18 Jun 05 04:55 LAG1 15 0 12 0 +- 17 7 +- 10 2 7840 18 Jun 05 12:03 LAG1 11 0 25 -24 +- 19 -2 +- 24 2 7840 18 Jun 05 12:26 LAG2 16 0 9 8 +- 18 1 +- 13 2 7840 18 Jun 05 16:28 LAG2 15 0 2 2 +- 20 0 +- 12 1 7840 18 Jun 05 20:25 LAG2 15 0 13 3 +- 17 -9 +- 14 1 7840 18 Jun 05 23:59 LAG1 18 0 16 8 +- 17 -5 +- 9 4 7840 19 Jun 05 03:35 LAG1 16 0 11 8 +- 16 -4 +- 10 2 7840 19 Jun 05 07:07 LAG1 12 0 11 -3 +- 19 -8 +- 16 2 7840 19 Jun 05 10:59 LAG1 6 0 27 56 +- 183 -40 +- 91 1 7840 19 Jun 05 18:51 LAG2 10 0 3 8 +- 53 -4 +- 30 1 7840 19 Jun 05 22:43 LAG1 4 0 17 12 +- 47 -4 +- 34 0 7840 19 Jun 05 22:51 LAG2 3 0 25 -29 +- 214 4 +- 243 1 7840 20 Jun 05 02:13 LAG1 10 0 22 32 +- 42 7 +- 25 3 Station 7848 (Ajaccio) (position solved, acc. 30 mm) 7848 15 Jun 05 09:09 LAG1 4 0 7 23 +- 176 -18 +- 141 3 7848 16 Jun 05 00:58 LAG1 1 0 4 0 +- 0 0 +- 0 0 7848 19 Jun 05 18:45 LAG2 4 0 4 -8 +- 99 -11 +- 119 1 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 16 Jun 05 23:15 LAG1 11 0 10 -3 +- 26 -7 +- 14 3 7941 17 Jun 05 14:41 LAG2 7 0 3 -4 +- 75 3 +- 44 2 7941 17 Jun 05 18:43 LAG2 1 0 1 0 +- 0 0 +- 0 0 7941 17 Jun 05 22:49 LAG2 3 0 16 -20 +- 186 3 +- 197 0 7941 18 Jun 05 16:47 LAG2 9 0 11 -12 +- 28 1 +- 23 1 7941 19 Jun 05 00:05 LAG1 16 0 5 0 +- 10 -3 +- 6 2 7941 19 Jun 05 14:50 LAG2 11 0 7 -5 +- 33 7 +- 20 2 7941 19 Jun 05 18:45 LAG2 12 0 2 0 +- 12 0 +- 8 2 7941 19 Jun 05 22:37 LAG1 2 0 6 116 +-2364 42 +- 821 0 7941 20 Jun 05 02:09 LAG1 19 0 10 -3 +- 9 5 +- 6 4 7941 20 Jun 05 12:59 LAG2 4 1 13 115 +- 234 -66 +- 142 2 7941 20 Jun 05 16:55 LAG2 15 0 3 -4 +- 15 1 +- 10 1 7941 20 Jun 05 21:15 LAG2 5 0 13 32 +- 141 -11 +- 82 1 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 13 Jun 05 17:59 LAG2 10 0 17 -19 +- 15 -5 +- 16 3 8834 13 Jun 05 20:23 LAG1 2 0 6 -3 +- 170 -26 +- 479 0 8834 13 Jun 05 21:59 LAG2 8 0 9 -14 +- 24 -13 +- 27 3 8834 13 Jun 05 23:45 LAG1 6 0 14 19 +- 82 13 +- 35 4 8834 14 Jun 05 06:55 LAG1 2 0 10 12 +- 166 42 +- 315 0 8834 16 Jun 05 04:19 LAG1 4 0 13 -13 +- 30 0 +- 61 2 8834 16 Jun 05 11:23 LAG1 4 0 19 -31 +- 57 24 +- 100 2 8834 16 Jun 05 12:26 LAG2 9 0 13 -15 +- 28 2 +- 20 4 8834 16 Jun 05 16:17 LAG2 7 0 22 -21 +- 35 0 +- 31 5 8834 16 Jun 05 20:39 LAG2 2 0 22 -17 +- 281 -4 +- 273 0 8834 17 Jun 05 21:51 LAG1 1 0 3 0 +- 0 0 +- 0 0 8834 18 Jun 05 12:23 LAG2 8 1 7 2 +- 21 2 +- 11 1 8834 18 Jun 05 16:43 LAG2 10 0 2 0 +- 23 0 +- 18 2 8834 18 Jun 05 20:23 LAG2 5 0 9 -8 +- 224 -8 +- 102 3 8834 18 Jun 05 20:39 LAG1 2 0 16 -80 +- 233 -192 +- 668 0 8834 19 Jun 05 00:07 LAG1 12 0 13 -6 +- 12 -9 +- 9 5 8834 19 Jun 05 03:35 LAG1 5 0 17 7 +- 27 14 +- 20 8 8834 19 Jun 05 07:11 LAG1 6 0 34 -31 +- 25 -3 +- 25 6 8834 19 Jun 05 10:26 LAG2 4 0 8 -31 +- 267 -12 +- 133 2 8834 19 Jun 05 14:23 LAG2 1 0 19 0 +- 0 0 +- 0 0 8834 19 Jun 05 18:33 LAG2 9 0 6 -2 +- 44 -4 +- 25 3 8834 20 Jun 05 09:21 LAG1 10 0 14 4 +- 25 6 +- 16 6 8834 20 Jun 05 12:29 LAG2 10 0 15 -3 +- 21 6 +- 12 3 8834 20 Jun 05 16:47 LAG2 6 0 14 -2 +- 37 10 +- 36 5 8834 20 Jun 05 20:41 LAG2 9 0 16 -1 +- 34 -11 +- 24 7 8834 20 Jun 05 21:11 LAG1 3 0 15 -62 +- 761 -20 +- 332 2 -------------------------------------------------------------------------------- Distribution of daytime, nighttime and twilight passes since Jan 1, 2003: -------------------------------------------------------------------------- Station System Period Number of Passes LAGEOS-1 LAGEOS-2 Day/Night/Twil. Day/Night/Twil. Total -------------------------------------------------------------------------- 1824 KIEVLA 050112 - 050404 0/ 9/ 0 0/ 14/ 0 23 1831 LVIL 050117 - 050620 0/ 16/ 0 0/ 20/ 0 36 1864 MD2LAS 050110 - 050619 0/ 34/ 0 0/ 40/ 0 74 1873 SIMLAS 050316 - 050614 0/ 15/ 0 0/ 14/ 0 29 1884 RIGLAS 050104 - 050620 0/ 23/ 0 3/ 42/ 3 71 6405 TIGO 050104 - 050608 7/ 16/ 2 8/ 20/ 2 55 6810 ZIMLAT 050101 - 050621 154/ 82/ 13 102/ 63/ 13 427 7080 MLRS25 050101 - 050618 33/ 48/ 4 20/ 62/ 7 174 7090 ML0514 050101 - 050620 81/302/ 24 94/181/ 18 700 7105 ML0725 050108 - 050617 1/ 24/ 1 10/ 53/ 5 94 7110 ML0414 050118 - 050617 61/ 64/ 11 25/ 88/ 8 257 7124 ML0819 050118 - 050620 0/ 28/ 0 0/ 7/ 0 35 7237 CHALAS 050102 - 050608 0/ 52/ 1 0/ 71/ 0 124 7249 BEJLAS 050101 - 050614 0/ 50/ 0 0/ 68/ 0 118 7308 CRLLAS 050111 - 050510 7/ 5/ 1 1/ 10/ 0 24 7355 TROS02 050603 - 050619 0/ 17/ 0 0/ 6/ 0 23 7405 TIGO 050105 - 050606 5/ 25/ 0 3/ 7/ 0 40 7501 ML0616 050117 - 050620 30/ 75/ 2 32/ 51/ 4 194 7806 METLAS 050301 - 050301 0/ 0/ 0 0/ 1/ 0 1 7810 ZIMLAT 050101 - 050621 132/ 81/ 12 96/ 59/ 12 392 7811 POLLAS 050111 - 050621 0/ 27/ 0 0/ 39/ 0 66 7824 SPNLAS 050108 - 050620 1/ 63/ 0 0/ 82/ 3 149 7825 STL3 050101 - 050620 169/266/ 26 168/148/ 19 796 7832 SALRO 050101 - 050620 58/126/ 11 84/156/ 12 447 7835 GRASSE 050104 - 050616 0/ 24/ 2 0/ 30/ 2 58 7837 CHILAS 050102 - 050414 0/ 22/ 0 0/ 40/ 1 63 7838 SHOLAS 050106 - 050620 43/ 45/ 1 22/ 74/ 3 188 7839 AUSLAS 050103 - 050621 128/ 80/ 10 59/ 88/ 11 376 7840 RGOLAS 050102 - 050620 144/ 70/ 13 75/ 87/ 18 407 7841 GFZLA3 050105 - 050602 43/ 36/ 9 16/ 61/ 8 173 7848 FTLR06 050515 - 050621 4/ 14/ 0 3/ 9/ 0 30 7941 MLROnn 050102 - 050620 28/ 43/ 2 45/ 81/ 14 213 8834 WLRS01 050109 - 050621 131/ 82/ 14 95/ 98/ 14 434 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050614.0 -52.7 +/- 0.1 373.4 +/- 0.1 -32672.44 +/- 0.01 050615.0 -52.1 +/- 0.1 375.4 +/- 0.1 -32672.61 +/- 0.02 050616.0 -51.3 +/- 0.1 376.6 +/- 0.1 -32672.92 +/- 0.03 050617.0 -50.6 +/- 0.1 378.1 +/- 0.1 -32673.32 +/- 0.03 050618.0 -49.9 +/- 0.1 379.6 +/- 0.1 -32673.62 +/- 0.04 050619.0 -49.1 +/- 0.1 381.4 +/- 0.1 -32673.71 +/- 0.04 050620.0 -47.5 +/- 0.1 383.7 +/- 0.1 -32673.60 +/- 0.05 -------------------------------------------------------------- D. COMMENTS 1. The analysis covered in this report is based on a new set of station coordinates: instead of the solution SSC(DUT)93L05, which was extrapolated over some 10 years beyond the epoch of the latest observations, the current analysis relies on the ITRF2000 solution. Tests performed during the last year show that the rms-of-fit that can be obtained when using ITRF2000 can be reduced to about 2 cm (instead of the 3+ cm which was achieved with the old model, for present-day epochs). Other model modifications are to be expected. We hope to serve the community with this development. 2. As of July 1, 2003, a new computation model and analysis strategy are in use: in terms of geometric modeling, models for ocean loading and atmospheric pressure loading have been turned on. The frequency of the solutions for the Earth Orientation Parameters has been increased to once per day (rather than once per 3 days). As a consequence, the arc length has been changed from 10 days to 8 days. Also, the empirical accelerations acting on the spacecraft are estimated twice per arc (i.e. for 4-day periods). To absorb (unmodeled) geocenter motion, 3 coefficients of the gravity field model are estimated: C(1,0), C(1,1) and S(1,1). Finally, the overall weighting scheme for the individual SLR observations is also modified slightly. 3. As of the same date, provisions for handling the dual-wavelength systems 7405 and 7810 properly have been installed. This is done by introducing dummy station ids 6405 and 6810 for the observations taken on 2nd wavelength. The specific analysis results are easily recognizable because the wavelength has been added to the printout of the station name. 4. As of July 7, 2004, similar provisions for handling the dual-wavelength syste 7941 properly have been installed. This is done by introducing a dummy station id 6941 for the observations taken on 2nd wavelength. From: Ron Noomen ******************************************************************************** |