| Date: | 2005-09-23 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 6055: Delft QL Report September 23, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-09-23 13:15:00 UTC Message No. 6055 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report September 23, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS September 23, 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 Fri, Sep 23, 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 Fri, Sep 23, 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 050921 - 050922 2 - 1864 Maidanak, Uzbekistan (site 2) 050920 - 050922 3 1 6405 Concepcion, Chile (TIGO 847) 050921 - 050923 2 2 6810 Zimmerwald 846, Switzerland 050921 - 050923 10 8 7080 McDonald Obs., Fort Davis, TX 050922 - 050922 2 1 7090 Yarragadee, Australia 050921 - 050922 3 4 7105 Greenbelt, Maryland 050921 - 050922 1 2 7110 Monument Peak, California 050922 - 050922 1 - 7249 Beijing, China 050921 - 050922 2 1 7405 Concepcion, Chile (TIGO 424) 050921 - 050921 1 - 7810 Zimmerwald 423, Switzerland 050921 - 050923 10 8 7811 Borowiec, Poland 050921 - 050923 6 1 7824 San Fernando, Spain 050921 - 050921 1 1 7832 Riyad, Saudi Arabia 050921 - 050921 2 - 7839 Graz, Austria 050923 - 050923 1 - 7840 Herstmonceux, United Kingdom 050921 - 050923 8 4 7841 Potsdam, Germany 050921 - 050923 6 3 7941 Matera, Italy (MLRO 532) 050921 - 050922 1 2 8834 Wettzell, Germany 050921 - 050923 7 6 ------ ------ --- --- TOTAL 050920 - 050923 69 44 ------------------------------------------------------------------------------ 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 Thu, Sep 15, 2005 to Fri, Sep 23, 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 27 24 Number of Passes 216/216 153/153 Number of Normal Points 2183/2164 1427/1417 Weighted RMS of Fit (mm) 15 13 ----------------------------------------------------------------------- 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 21 Sep 05 17:51 LAG1 9 0 20 -2 +- 717 6 +- 514 16 1831 22 Sep 05 20:12 LAG1 9 0 359 -427 +- 531 102 +- 441 35 Station 1864 (Maidanak) (position fixed, acc. 200 mm) 1864 15 Sep 05 15:21 LAG1 11 0 29 -4 +- 182 7 +- 95 25 1864 16 Sep 05 17:42 LAG1 7 0 10 5 +- 281 -4 +- 339 9 1864 16 Sep 05 20:53 LAG2 7 0 46 8 +- 229 43 +- 287 31 1864 17 Sep 05 19:50 LAG1 2 0 37 -80 +-1127 253 +-5476 0 1864 18 Sep 05 14:46 LAG1 13 0 32 9 +- 167 -10 +- 88 25 1864 18 Sep 05 18:31 LAG1 7 0 64 11 +- 350 -65 +- 318 9 1864 19 Sep 05 16:57 LAG1 12 0 52 -42 +- 176 -11 +- 98 13 1864 20 Sep 05 15:35 LAG1 13 0 27 -10 +- 166 -10 +- 90 14 1864 21 Sep 05 17:46 LAG1 11 0 30 -2 +- 181 -18 +- 147 20 1864 22 Sep 05 16:23 LAG1 11 0 49 -28 +- 181 -19 +- 98 13 1864 22 Sep 05 21:33 LAG2 2 0 67 -689 +-7107 -462 +-5174 0 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 15 Sep 05 00:00 LAG1 5 0 100 155 +- 723 -53 +- 625 9 1873 15 Sep 05 00:31 LAG2 3 0 148 147 +- 351 0 +- 212 8 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 18 Sep 05 18:35 LAG1 10 0 9 6 +- 154 -7 +- 99 5 Station 6405 (Concepcion) (position solved, acc. 20 mm) 6405 15 Sep 05 01:09 LAG1 8 0 8 4 +- 26 4 +- 40 7 6405 15 Sep 05 13:31 LAG1 6 0 9 15 +- 70 12 +- 52 5 6405 15 Sep 05 20:55 LAG2 16 0 21 6 +- 18 10 +- 14 13 6405 15 Sep 05 23:45 LAG1 13 0 11 6 +- 20 -1 +- 12 10 6405 16 Sep 05 00:51 LAG2 21 0 8 -9 +- 18 0 +- 13 2 6405 16 Sep 05 22:13 LAG1 16 0 7 -1 +- 17 0 +- 10 7 6405 20 Sep 05 19:43 LAG2 4 0 35 -25 +- 117 -6 +- 121 15 6405 21 Sep 05 00:05 LAG1 6 0 25 19 +- 33 4 +- 19 4 6405 21 Sep 05 04:05 LAG2 10 0 79 -24 +- 55 53 +- 36 53 6405 21 Sep 05 22:47 LAG1 3 0 7 -1 +- 59 12 +- 90 1 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 15 Sep 05 00:00 LAG1 8 0 9 -9 +- 69 1 +- 61 2 6810 15 Sep 05 00:25 LAG2 14 0 7 4 +- 49 0 +- 46 5 6810 15 Sep 05 03:11 LAG1 23 0 15 -12 +- 38 -3 +- 19 5 6810 15 Sep 05 04:13 LAG2 19 0 8 -7 +- 42 3 +- 26 3 6810 15 Sep 05 06:43 LAG1 26 0 14 -4 +- 36 -6 +- 20 6 6810 15 Sep 05 08:17 LAG2 16 0 5 1 +- 59 -1 +- 35 4 6810 15 Sep 05 12:22 LAG2 12 0 17 -17 +- 58 -7 +- 38 5 6810 15 Sep 05 18:55 LAG1 18 0 13 -6 +- 45 4 +- 24 5 6810 15 Sep 05 22:31 LAG1 4 0 14 27 +- 429 18 +- 198 1 6810 16 Sep 05 01:55 LAG1 11 0 9 7 +- 66 2 +- 39 6 6810 16 Sep 05 02:12 LAG2 8 0 6 -4 +- 68 1 +- 38 2 6810 16 Sep 05 05:15 LAG1 19 0 26 -10 +- 47 -9 +- 23 7 6810 16 Sep 05 06:19 LAG2 16 0 15 -7 +- 45 -7 +- 29 4 6810 16 Sep 05 10:31 LAG2 12 0 18 -10 +- 55 -10 +- 30 3 6810 20 Sep 05 19:19 LAG1 16 0 9 0 +- 46 -4 +- 25 4 6810 20 Sep 05 22:48 LAG1 16 0 6 1 +- 46 2 +- 28 3 6810 21 Sep 05 00:51 LAG2 22 0 12 9 +- 39 -4 +- 23 4 6810 21 Sep 05 02:06 LAG1 15 0 9 7 +- 47 0 +- 22 4 6810 21 Sep 05 05:00 LAG2 18 0 19 13 +- 44 6 +- 29 5 6810 21 Sep 05 05:33 LAG1 16 0 9 5 +- 46 -3 +- 26 5 6810 21 Sep 05 09:03 LAG2 13 0 25 -24 +- 56 1 +- 45 3 6810 21 Sep 05 13:19 LAG2 3 0 13 -12 +- 161 -6 +- 807 0 6810 21 Sep 05 18:00 LAG1 18 0 32 -15 +- 53 -13 +- 32 1 6810 21 Sep 05 21:47 LAG1 10 0 12 -9 +- 183 -1 +- 88 2 6810 21 Sep 05 23:07 LAG2 15 0 13 -14 +- 57 -11 +- 60 5 6810 22 Sep 05 00:47 LAG1 17 0 27 -27 +- 45 1 +- 24 2 6810 22 Sep 05 02:59 LAG2 23 0 14 -14 +- 38 0 +- 21 3 6810 22 Sep 05 04:11 LAG1 17 0 17 -16 +- 46 -1 +- 22 6 6810 22 Sep 05 07:09 LAG2 19 0 18 -17 +- 42 0 +- 29 4 6810 22 Sep 05 07:53 LAG1 18 0 37 -37 +- 43 0 +- 33 3 6810 22 Sep 05 11:09 LAG2 8 0 21 -25 +- 87 -3 +- 45 3 6810 22 Sep 05 16:34 LAG1 8 0 4 -2 +- 75 0 +- 69 3 6810 22 Sep 05 19:55 LAG1 16 0 20 -18 +- 45 -2 +- 19 5 6810 22 Sep 05 23:28 LAG1 14 0 26 -27 +- 52 -3 +- 36 3 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 19 Sep 05 02:21 LAG1 13 0 14 16 +- 28 -12 +- 16 2 7080 19 Sep 05 05:57 LAG1 2 0 17 -24 +- 998 8 +-1122 0 7080 19 Sep 05 08:21 LAG2 7 0 6 1 +- 61 4 +- 53 3 7080 20 Sep 05 04:31 LAG1 8 0 8 -2 +- 37 6 +- 26 3 7080 20 Sep 05 06:25 LAG2 9 0 2 1 +- 30 -1 +- 45 2 7080 20 Sep 05 10:03 LAG2 6 0 23 14 +- 139 -4 +- 68 2 7080 21 Sep 05 02:56 LAG1 5 0 18 4 +- 182 -6 +- 90 1 7080 22 Sep 05 01:45 LAG1 13 0 8 8 +- 24 -6 +- 16 3 7080 22 Sep 05 05:22 LAG1 7 0 4 8 +- 74 -3 +- 50 1 7080 22 Sep 05 06:50 LAG2 4 0 19 -23 +- 200 2 +- 151 1 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 15 Sep 05 05:51 LAG2 11 0 8 -8 +- 13 3 +- 11 2 7090 15 Sep 05 08:57 LAG1 12 0 18 -28 +- 19 10 +- 13 2 7090 15 Sep 05 09:47 LAG2 19 0 14 -6 +- 9 -9 +- 7 1 7090 15 Sep 05 12:11 LAG1 16 0 22 -9 +- 10 12 +- 6 3 7090 15 Sep 05 14:01 LAG2 14 0 8 6 +- 11 -2 +- 5 2 7090 15 Sep 05 18:07 LAG2 12 0 14 7 +- 31 -5 +- 22 1 7090 15 Sep 05 21:17 LAG1 14 0 7 -6 +- 11 3 +- 11 2 7090 16 Sep 05 00:48 LAG1 7 0 19 -27 +- 47 -5 +- 29 1 7090 16 Sep 05 08:04 LAG2 8 0 18 -9 +- 19 -7 +- 17 5 7090 16 Sep 05 10:45 LAG1 20 0 8 -6 +- 9 -4 +- 5 1 7090 16 Sep 05 12:29 LAG2 11 0 9 8 +- 27 -11 +- 21 1 7090 16 Sep 05 16:15 LAG2 13 0 7 5 +- 11 -1 +- 5 2 7090 17 Sep 05 09:41 LAG1 13 0 26 -27 +- 15 1 +- 10 2 7090 17 Sep 05 10:11 LAG2 8 0 8 -8 +- 21 0 +- 35 1 7090 17 Sep 05 13:05 LAG1 10 0 25 -21 +- 13 10 +- 14 2 7090 17 Sep 05 22:05 LAG1 16 0 7 0 +- 10 4 +- 9 4 7090 18 Sep 05 08:13 LAG2 4 0 6 -5 +- 69 1 +- 86 1 7090 18 Sep 05 08:23 LAG1 10 0 9 4 +- 18 4 +- 16 2 7090 18 Sep 05 11:57 LAG1 4 1 30 -17 +- 52 -25 +- 94 4 7090 18 Sep 05 12:17 LAG2 14 0 17 -17 +- 11 -5 +- 9 1 7090 18 Sep 05 16:29 LAG2 11 0 8 5 +- 12 -1 +- 7 5 7090 18 Sep 05 20:51 LAG1 9 0 27 -25 +- 15 -10 +- 30 2 7090 19 Sep 05 00:12 LAG1 6 0 3 -12 +- 90 -6 +- 44 1 7090 19 Sep 05 06:37 LAG2 6 0 6 -19 +- 111 13 +- 62 1 7090 19 Sep 05 10:55 LAG1 3 0 32 109 +-1411 -49 +- 491 0 7090 19 Sep 05 10:59 LAG2 4 0 6 1 +- 431 -4 +- 248 2 7090 19 Sep 05 14:47 LAG2 3 0 10 9 +- 227 17 +- 205 0 7090 20 Sep 05 08:53 LAG2 3 0 10 -14 +- 404 2 +- 227 0 7090 20 Sep 05 17:02 LAG2 6 0 9 12 +- 23 -6 +- 22 3 7090 20 Sep 05 21:28 LAG1 3 0 8 -26 +- 289 -11 +- 184 0 7090 21 Sep 05 07:53 LAG1 5 0 12 10 +- 29 4 +- 47 2 7090 21 Sep 05 10:27 LAG2 10 0 3 -6 +- 58 -6 +- 39 0 7090 21 Sep 05 11:09 LAG1 17 0 15 -11 +- 10 -4 +- 6 2 7090 21 Sep 05 14:55 LAG2 18 0 19 -1 +- 10 11 +- 6 2 7090 21 Sep 05 19:02 LAG2 11 0 5 2 +- 13 -10 +- 26 2 7090 21 Sep 05 23:37 LAG1 15 0 14 -15 +- 12 -4 +- 7 4 7090 22 Sep 05 08:41 LAG2 14 0 16 -2 +- 12 -11 +- 10 1 7090 22 Sep 05 09:41 LAG1 14 0 17 -4 +- 11 7 +- 5 1 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 19 Sep 05 08:23 LAG2 5 0 12 -8 +- 44 4 +- 52 1 7105 20 Sep 05 10:29 LAG2 12 0 17 -5 +- 12 -13 +- 10 3 7105 21 Sep 05 09:07 LAG2 4 0 2 -24 +- 688 10 +- 276 2 7105 21 Sep 05 09:27 LAG1 15 0 10 -12 +- 12 -3 +- 7 0 7105 22 Sep 05 07:13 LAG2 6 0 19 81 +- 338 -40 +- 134 3 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 15 Sep 05 04:03 LAG1 12 0 20 7 +- 15 -8 +- 8 4 7110 15 Sep 05 07:39 LAG1 1 0 3 0 +- 0 0 +- 0 0 7110 15 Sep 05 07:57 LAG2 2 0 9 -9 +- 338 33 +- 606 0 7110 15 Sep 05 11:07 LAG1 3 0 4 3 +- 106 1 +- 141 0 7110 15 Sep 05 11:59 LAG2 7 0 16 -14 +- 87 -1 +- 47 2 7110 15 Sep 05 14:39 LAG1 3 0 3 -3 +- 281 4 +- 164 0 7110 15 Sep 05 16:04 LAG2 4 0 4 0 +- 36 7 +- 73 2 7110 16 Sep 05 02:57 LAG1 6 0 30 33 +- 19 -11 +- 28 2 7110 16 Sep 05 13:05 LAG1 3 0 7 -6 +- 55 2 +- 101 0 7110 16 Sep 05 22:07 LAG2 7 0 7 4 +- 22 15 +- 40 3 7110 17 Sep 05 11:55 LAG1 2 0 17 -85 +-1417 66 +-1394 0 7110 17 Sep 05 12:04 LAG2 4 0 2 4 +- 40 -9 +- 72 1 7110 17 Sep 05 15:07 LAG1 6 0 6 -3 +- 19 -5 +- 15 2 7110 19 Sep 05 02:27 LAG1 11 0 14 10 +- 28 -13 +- 16 2 7110 19 Sep 05 11:57 LAG2 16 0 3 -3 +- 12 -1 +- 9 2 7110 22 Sep 05 05:05 LAG1 12 0 9 8 +- 12 -1 +- 6 3 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 16 Sep 05 07:00 LAG1 11 0 14 10 +- 15 -20 +- 17 2 7124 16 Sep 05 09:01 LAG2 11 0 24 24 +- 12 0 +- 11 3 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 17 Sep 05 12:39 LAG1 5 0 23 31 +- 160 -11 +- 136 13 7237 17 Sep 05 19:24 LAG1 4 0 21 25 +- 90 -34 +- 189 0 7237 17 Sep 05 19:32 LAG2 7 0 29 27 +- 127 -3 +- 104 15 7237 18 Sep 05 11:29 LAG1 2 0 28 -102 +-3113 32 +-1346 0 7237 18 Sep 05 14:31 LAG1 4 0 57 55 +- 76 -6 +- 48 12 7237 18 Sep 05 17:33 LAG2 8 0 9 0 +- 59 -2 +- 73 8 7237 18 Sep 05 18:02 LAG1 4 0 14 7 +- 78 -20 +- 144 1 7237 19 Sep 05 15:41 LAG2 2 0 77 445 +-2007 553 +-3000 0 7237 20 Sep 05 11:58 LAG1 1 0 103 0 +- 0 0 +- 0 0 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 21 Sep 05 19:57 LAG2 7 0 3684 4992 +- 182 -5720 +- 129 213*CHK* 7249 21 Sep 05 20:56 LAG1 8 0 169 -144 +- 60 84 +- 63 108*CHK* 7249 22 Sep 05 12:40 LAG1 7 4 4978 6034 +- 107 3990 +- 122 7*CHK* Station 7358 (Tanegashima) (position solved, acc. 10 mm) 7358 15 Sep 05 11:59 LAG1 2 0 0 1 +- 418 -1 +- 386 0 Station 7405 (Concepcion) (position solved, acc. 20 mm) 7405 15 Sep 05 01:13 LAG1 3 0 16 -16 +- 48 0 +- 114 0 7405 15 Sep 05 03:02 LAG2 6 0 12 -17 +- 89 -5 +- 70 4 7405 21 Sep 05 00:13 LAG1 3 0 7 11 +- 173 -5 +- 188 1 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 15 Sep 05 00:10 LAG2 5 0 9 -48 +- 99 29 +- 58 1 7501 15 Sep 05 06:25 LAG1 2 0 5 -36 +- 266 39 +- 311 0 7501 15 Sep 05 16:26 LAG1 10 0 18 6 +- 51 5 +- 22 1 7501 15 Sep 05 17:51 LAG2 8 0 27 16 +- 33 13 +- 39 1 7501 15 Sep 05 21:47 LAG2 9 0 18 5 +- 14 11 +- 8 4 7501 16 Sep 05 18:23 LAG1 7 0 20 15 +- 17 4 +- 10 1 7501 16 Sep 05 20:23 LAG2 4 0 20 -23 +- 198 26 +- 121 1 7501 19 Sep 05 00:23 LAG2 4 0 13 -13 +- 21 5 +- 109 1 7501 19 Sep 05 18:29 LAG2 5 0 10 2 +- 86 8 +- 96 0 7501 19 Sep 05 22:15 LAG2 3 0 27 14 +- 509 -6 +- 272 0 7501 20 Sep 05 06:20 LAG1 12 0 13 -3 +- 12 7 +- 8 4 7501 21 Sep 05 05:03 LAG1 3 0 11 9 +- 257 14 +- 181 0 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 15 Sep 05 00:00 LAG1 9 0 7 -7 +- 69 0 +- 55 1 7810 15 Sep 05 00:27 LAG2 14 0 12 10 +- 52 0 +- 56 5 7810 15 Sep 05 03:11 LAG1 24 0 16 -13 +- 37 -3 +- 18 4 7810 15 Sep 05 04:19 LAG2 19 0 11 -8 +- 44 5 +- 28 5 7810 15 Sep 05 06:43 LAG1 19 0 15 -9 +- 41 -6 +- 21 3 7810 15 Sep 05 08:17 LAG2 19 0 4 0 +- 48 0 +- 29 4 7810 15 Sep 05 12:25 LAG2 11 0 25 -30 +- 66 -7 +- 50 3 7810 15 Sep 05 18:53 LAG1 24 0 15 -12 +- 37 3 +- 17 5 7810 15 Sep 05 22:31 LAG1 5 0 24 -3 +- 488 9 +- 225 2 7810 16 Sep 05 01:55 LAG1 14 0 4 1 +- 53 2 +- 33 2 7810 16 Sep 05 02:23 LAG2 5 0 12 -11 +- 87 1 +- 70 2 7810 16 Sep 05 05:17 LAG1 25 0 26 -15 +- 36 -9 +- 17 3 7810 16 Sep 05 06:35 LAG2 15 0 18 -8 +- 53 -8 +- 38 5 7810 16 Sep 05 10:32 LAG2 10 0 22 -6 +- 59 -12 +- 33 4 7810 20 Sep 05 19:19 LAG1 9 0 27 -21 +- 75 -3 +- 31 1 7810 20 Sep 05 22:53 LAG1 13 0 16 -16 +- 54 1 +- 37 3 7810 21 Sep 05 00:53 LAG2 21 0 15 -12 +- 39 -4 +- 25 4 7810 21 Sep 05 02:11 LAG1 13 0 13 -12 +- 51 0 +- 25 2 7810 21 Sep 05 05:15 LAG2 13 0 10 -3 +- 81 7 +- 56 5 7810 21 Sep 05 05:36 LAG1 13 0 20 -20 +- 50 -4 +- 36 2 7810 21 Sep 05 09:11 LAG2 11 0 3 -1 +- 62 0 +- 58 3 7810 21 Sep 05 13:21 LAG2 2 0 17 28 +- 480 -43 +-1840 0 7810 21 Sep 05 18:00 LAG1 12 0 20 -11 +- 54 -13 +- 50 1 7810 21 Sep 05 21:47 LAG1 9 0 9 -5 +- 194 -2 +- 98 1 7810 21 Sep 05 23:13 LAG2 11 0 11 -13 +- 65 -11 +- 90 1 7810 22 Sep 05 00:51 LAG1 14 0 30 -31 +- 52 2 +- 30 2 7810 22 Sep 05 03:00 LAG2 23 0 14 -13 +- 38 0 +- 21 4 7810 22 Sep 05 04:13 LAG1 14 0 18 -19 +- 63 -1 +- 34 6 7810 22 Sep 05 07:09 LAG2 16 0 15 -14 +- 48 0 +- 32 2 7810 22 Sep 05 07:52 LAG1 15 0 32 -32 +- 47 -3 +- 38 4 7810 22 Sep 05 11:08 LAG2 7 0 15 -12 +- 377 0 +- 202 6 7810 22 Sep 05 16:34 LAG1 8 0 5 5 +- 75 0 +- 71 2 7810 22 Sep 05 19:55 LAG1 12 0 14 -13 +- 53 -2 +- 22 5 7810 22 Sep 05 23:33 LAG1 13 0 25 -25 +- 53 -3 +- 40 3 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 19 Sep 05 20:37 LAG1 13 0 12 -2 +- 52 5 +- 38 8 7811 20 Sep 05 00:13 LAG1 9 0 12 5 +- 68 6 +- 69 7 7811 20 Sep 05 03:09 LAG2 7 0 32 29 +- 72 -8 +- 97 15 7811 20 Sep 05 19:15 LAG1 16 0 16 14 +- 45 -4 +- 29 3 7811 20 Sep 05 22:47 LAG1 14 0 20 14 +- 49 4 +- 36 11 7811 21 Sep 05 01:17 LAG2 5 0 20 20 +- 82 3 +- 108 2 7811 21 Sep 05 02:13 LAG1 12 0 26 25 +- 53 4 +- 40 8 7811 21 Sep 05 18:11 LAG1 7 0 18 36 +- 260 -21 +- 146 15 7811 21 Sep 05 21:27 LAG1 13 0 21 19 +- 50 5 +- 39 4 7811 22 Sep 05 00:51 LAG1 11 0 8 2 +- 55 0 +- 37 7 7811 22 Sep 05 20:05 LAG1 14 0 20 18 +- 49 -5 +- 35 8 7811 22 Sep 05 23:31 LAG1 15 0 13 9 +- 47 0 +- 33 8 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 15 Sep 05 19:07 LAG1 20 0 55 55 +- 27 6 +- 16 8 7824 16 Sep 05 05:47 LAG1 6 0 42 79 +- 226 -21 +- 121 1 7824 16 Sep 05 21:39 LAG1 9 0 64 66 +- 94 -1 +- 56 3 7824 18 Sep 05 22:09 LAG1 9 0 47 57 +- 79 8 +- 54 3 7824 19 Sep 05 00:37 LAG2 11 0 29 28 +- 37 1 +- 29 7 7824 19 Sep 05 20:57 LAG1 3 0 41 65 +- 360 23 +- 339 3 7824 20 Sep 05 00:13 LAG1 6 0 23 38 +- 105 16 +- 80 4 7824 20 Sep 05 02:52 LAG2 7 0 63 85 +- 87 -12 +- 38 4 7824 20 Sep 05 03:35 LAG1 4 0 54 75 +- 364 13 +- 240 0 7824 20 Sep 05 19:29 LAG1 21 0 45 47 +- 30 -3 +- 15 7 7824 20 Sep 05 22:51 LAG1 11 0 36 57 +- 73 17 +- 46 3 7824 21 Sep 05 00:49 LAG2 10 0 49 47 +- 81 -1 +- 69 3 7824 21 Sep 05 05:49 LAG1 9 0 60 69 +- 50 -11 +- 28 4 7824 21 Sep 05 09:03 LAG2 3 0 45 168 +-1442 61 +- 718 2 7824 21 Sep 05 21:53 LAG1 4 0 61 58 +- 162 3 +- 189 1 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 15 Sep 05 06:01 LAG2 13 1 11 8 +- 12 1 +- 12 7 7825 15 Sep 05 08:56 LAG1 11 0 4 -8 +- 38 2 +- 18 2 7825 15 Sep 05 10:37 LAG2 9 0 15 4 +- 51 -12 +- 37 7 7825 15 Sep 05 14:13 LAG2 11 0 2 0 +- 47 0 +- 26 2 7825 16 Sep 05 19:49 LAG1 6 0 15 -11 +- 19 -4 +- 14 3 7825 16 Sep 05 23:15 LAG1 7 0 18 -6 +- 15 -6 +- 7 7 7825 17 Sep 05 14:59 LAG2 6 0 7 -4 +- 76 8 +- 56 3 7825 17 Sep 05 21:47 LAG1 18 0 13 -2 +- 10 5 +- 5 3 7825 18 Sep 05 04:23 LAG2 6 0 8 2 +- 24 10 +- 25 3 7825 18 Sep 05 04:46 LAG1 1 0 21 0 +- 0 0 +- 0 0 7825 18 Sep 05 07:59 LAG1 13 0 11 0 +- 13 5 +- 7 3 7825 18 Sep 05 08:23 LAG2 22 0 10 9 +- 9 -5 +- 6 3 7825 18 Sep 05 12:31 LAG2 7 0 3 5 +- 172 4 +- 80 1 7825 18 Sep 05 20:31 LAG1 3 0 3 -28 +- 362 -13 +- 191 2 7825 19 Sep 05 00:21 LAG1 8 0 11 -15 +- 48 3 +- 28 5 7825 19 Sep 05 06:55 LAG2 6 0 11 50 +- 120 -26 +- 71 6 7825 19 Sep 05 10:51 LAG2 12 0 9 -8 +- 12 6 +- 16 1 7825 19 Sep 05 14:59 LAG2 8 0 4 -2 +- 14 5 +- 29 2 7825 19 Sep 05 19:07 LAG1 17 0 16 12 +- 10 -9 +- 10 1 7825 19 Sep 05 22:39 LAG1 9 1 11 -13 +- 36 -1 +- 23 1 7825 20 Sep 05 04:47 LAG2 1 0 0 0 +- 0 0 +- 0 0 7825 20 Sep 05 12:59 LAG2 12 0 10 3 +- 12 -9 +- 14 1 7825 20 Sep 05 21:19 LAG1 15 0 13 8 +- 11 8 +- 7 3 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 17 Sep 05 00:19 LAG1 7 0 11 -20 +- 64 -8 +- 55 1 7832 17 Sep 05 00:41 LAG2 8 0 12 3 +- 29 19 +- 41 3 7832 17 Sep 05 03:59 LAG1 6 0 30 -15 +- 41 -16 +- 40 3 7832 17 Sep 05 05:03 LAG2 9 0 10 0 +- 22 -7 +- 44 10 7832 17 Sep 05 16:21 LAG1 8 0 12 -1 +- 69 -6 +- 38 8 7832 17 Sep 05 19:53 LAG1 8 0 23 -21 +- 28 5 +- 41 2 7832 17 Sep 05 22:37 LAG2 9 0 9 -20 +- 64 -9 +- 42 3 7832 18 Sep 05 02:19 LAG1 11 0 7 10 +- 39 4 +- 22 4 7832 18 Sep 05 03:01 LAG2 5 0 26 28 +- 35 24 +- 116 7 7832 18 Sep 05 18:29 LAG1 4 0 25 -3 +- 315 -14 +- 164 3 7832 19 Sep 05 01:21 LAG1 2 0 8 1 +- 212 12 +- 372 0 7832 19 Sep 05 04:41 LAG1 11 0 11 4 +- 21 -12 +- 22 4 7832 19 Sep 05 05:21 LAG2 8 0 22 16 +- 25 11 +- 31 3 7832 19 Sep 05 17:05 LAG1 7 0 8 -42 +- 144 -20 +- 63 1 7832 19 Sep 05 22:48 LAG2 15 0 28 -8 +- 21 -23 +- 15 3 7832 19 Sep 05 23:51 LAG1 7 0 9 -7 +- 35 3 +- 52 2 7832 20 Sep 05 03:09 LAG2 8 0 4 6 +- 45 8 +- 61 3 7832 20 Sep 05 03:29 LAG1 7 0 8 -17 +- 71 13 +- 44 3 7832 20 Sep 05 07:51 LAG2 7 0 13 -23 +- 164 17 +- 81 4 7832 20 Sep 05 15:53 LAG1 11 0 17 -16 +- 20 -1 +- 18 5 7832 20 Sep 05 19:19 LAG1 13 0 4 -1 +- 18 0 +- 18 4 7832 20 Sep 05 20:59 LAG2 12 0 26 -12 +- 19 -19 +- 15 2 7832 21 Sep 05 01:04 LAG2 11 0 11 -8 +- 26 -16 +- 29 3 7832 21 Sep 05 02:03 LAG1 8 0 7 -9 +- 35 5 +- 22 2 7832 21 Sep 05 05:39 LAG2 12 0 18 10 +- 29 7 +- 27 5 7832 21 Sep 05 14:31 LAG1 11 0 12 -7 +- 19 -10 +- 22 3 7832 21 Sep 05 17:53 LAG1 7 0 22 -13 +- 116 -17 +- 58 1 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 15 Sep 05 00:01 LAG1 7 0 5 3 +- 19 1 +- 13 1 7839 15 Sep 05 00:45 LAG2 6 0 20 20 +- 59 0 +- 49 0 7839 15 Sep 05 03:07 LAG1 18 0 4 -3 +- 11 -2 +- 6 1 7839 15 Sep 05 04:21 LAG2 19 0 8 -3 +- 9 5 +- 6 2 7839 15 Sep 05 06:53 LAG1 18 0 6 -1 +- 10 -4 +- 8 1 7839 15 Sep 05 08:21 LAG2 14 0 8 6 +- 11 -1 +- 6 4 7839 15 Sep 05 12:29 LAG2 7 0 12 -22 +- 42 -11 +- 38 0 7839 15 Sep 05 19:26 LAG1 2 0 4 12 +- 185 -4 +- 96 0 7839 15 Sep 05 22:27 LAG1 21 0 8 0 +- 9 4 +- 5 2 7839 16 Sep 05 01:57 LAG1 14 0 9 8 +- 11 2 +- 8 2 7839 16 Sep 05 06:49 LAG2 8 0 9 0 +- 23 -6 +- 18 0 7839 16 Sep 05 10:35 LAG2 8 0 14 -6 +- 16 -12 +- 12 1 7839 16 Sep 05 17:53 LAG1 7 0 11 -5 +- 24 -3 +- 13 2 7839 16 Sep 05 21:15 LAG1 3 0 15 -12 +- 242 1 +- 139 0 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 16 Sep 05 10:33 LAG2 8 0 17 0 +- 23 -12 +- 17 2 7840 16 Sep 05 21:11 LAG1 20 0 4 0 +- 14 -1 +- 7 3 7840 17 Sep 05 00:45 LAG1 10 0 10 0 +- 21 -5 +- 12 2 7840 17 Sep 05 00:53 LAG2 7 0 4 -8 +- 46 8 +- 60 0 7840 17 Sep 05 04:03 LAG1 18 0 30 -13 +- 15 -15 +- 7 1 7840 17 Sep 05 04:25 LAG2 11 0 26 0 +- 22 13 +- 11 1 7840 17 Sep 05 07:51 LAG1 12 0 20 -6 +- 20 -16 +- 20 2 7840 17 Sep 05 08:33 LAG2 20 0 8 4 +- 14 4 +- 9 3 7840 17 Sep 05 19:46 LAG1 17 0 11 -10 +- 16 0 +- 7 2 7840 17 Sep 05 23:25 LAG1 14 0 11 7 +- 18 3 +- 10 1 7840 18 Sep 05 06:37 LAG1 4 0 6 -9 +- 79 10 +- 79 4 7840 18 Sep 05 06:41 LAG2 4 0 3 5 +- 197 1 +- 114 0 7840 18 Sep 05 10:43 LAG2 7 0 19 -16 +- 98 -21 +- 60 1 7840 19 Sep 05 08:45 LAG1 7 0 14 -11 +- 25 -18 +- 62 2 7840 19 Sep 05 09:07 LAG2 9 0 9 12 +- 42 -3 +- 32 2 7840 21 Sep 05 17:54 LAG1 16 0 17 2 +- 16 -15 +- 13 2 7840 21 Sep 05 21:46 LAG1 2 0 7 14 +- 95 -10 +- 78 0 7840 22 Sep 05 00:55 LAG1 18 0 6 -5 +- 15 -1 +- 9 2 7840 22 Sep 05 03:05 LAG2 20 0 5 2 +- 14 2 +- 9 2 7840 22 Sep 05 04:23 LAG1 4 0 1 0 +- 37 0 +- 21 1 7840 22 Sep 05 07:05 LAG2 14 0 6 -1 +- 17 0 +- 10 5 7840 22 Sep 05 08:09 LAG1 4 0 27 -32 +- 66 -13 +- 153 3 7840 22 Sep 05 11:13 LAG2 4 0 5 1 +- 195 3 +- 136 3 7840 22 Sep 05 20:01 LAG1 20 0 8 5 +- 14 -2 +- 8 3 7840 22 Sep 05 23:35 LAG1 7 0 5 -6 +- 29 -3 +- 25 1 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 17 Sep 05 19:43 LAG1 14 0 24 -6 +- 11 8 +- 5 15 7841 19 Sep 05 20:41 LAG1 16 0 14 -10 +- 11 8 +- 6 2 7841 20 Sep 05 02:49 LAG2 8 0 6 30 +- 99 13 +- 47 4 7841 20 Sep 05 03:55 LAG1 5 0 24 -3 +- 115 14 +- 59 4 7841 20 Sep 05 19:09 LAG1 22 0 12 -2 +- 8 -6 +- 4 2 7841 21 Sep 05 21:19 LAG1 18 0 9 2 +- 9 2 +- 4 8 7841 21 Sep 05 23:21 LAG2 10 0 12 8 +- 13 -11 +- 22 4 7841 22 Sep 05 00:47 LAG1 12 0 12 -7 +- 12 1 +- 5 9 7841 22 Sep 05 03:11 LAG2 15 0 9 6 +- 10 2 +- 7 4 7841 22 Sep 05 04:16 LAG1 10 0 3 -1 +- 14 -1 +- 7 2 7841 22 Sep 05 19:57 LAG1 17 0 5 3 +- 10 -1 +- 5 3 7841 22 Sep 05 23:29 LAG1 14 0 3 0 +- 12 -1 +- 8 2 Station 7848 (Ajaccio) (position solved, acc. 30 mm) 7848 15 Sep 05 04:41 LAG2 3 0 2 12 +- 347 -10 +- 292 0 7848 16 Sep 05 05:43 LAG1 3 0 3 -2 +- 217 2 +- 221 3 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 15 Sep 05 04:36 LAG2 9 0 12 4 +- 23 7 +- 20 1 7941 15 Sep 05 19:09 LAG1 17 0 3 -1 +- 11 1 +- 6 2 7941 15 Sep 05 22:37 LAG1 2 0 4 28 +- 428 22 +- 302 0 7941 15 Sep 05 22:45 LAG2 4 0 8 -7 +- 22 5 +- 122 4 7941 16 Sep 05 05:31 LAG1 15 0 9 0 +- 14 -5 +- 8 1 7941 16 Sep 05 17:43 LAG1 7 0 4 0 +- 44 -3 +- 30 1 7941 17 Sep 05 00:39 LAG2 6 0 17 -7 +- 36 12 +- 44 2 7941 18 Sep 05 06:46 LAG2 2 0 14 -79 +- 845 -46 +- 415 0 7941 19 Sep 05 23:09 LAG2 3 0 20 16 +- 26 -22 +- 159 6 7941 20 Sep 05 00:13 LAG1 8 0 6 -5 +- 16 9 +- 23 2 7941 21 Sep 05 01:37 LAG2 2 0 8 -62 +-3557 22 +-1465 0 7941 21 Sep 05 18:03 LAG1 4 0 20 17 +- 91 -2 +- 74 2 7941 21 Sep 05 23:27 LAG2 6 0 12 0 +- 43 -13 +- 46 2 7941 22 Sep 05 03:11 LAG2 2 0 4 113 +- 802 71 +- 500 0 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 15 Sep 05 19:09 LAG1 3 0 3 15 +- 136 12 +- 119 1 8834 18 Sep 05 06:27 LAG1 6 0 41 -40 +- 17 6 +- 33 4 8834 18 Sep 05 18:32 LAG1 4 0 5 -5 +- 70 0 +- 58 1 8834 18 Sep 05 21:55 LAG1 8 0 12 3 +- 38 8 +- 21 4 8834 19 Sep 05 00:40 LAG2 8 0 15 13 +- 98 13 +- 50 6 8834 19 Sep 05 01:19 LAG1 6 0 9 12 +- 30 3 +- 19 2 8834 19 Sep 05 04:57 LAG2 5 0 7 0 +- 46 8 +- 50 1 8834 19 Sep 05 05:07 LAG1 8 0 22 5 +- 24 -21 +- 20 6 8834 19 Sep 05 08:59 LAG2 5 0 10 -15 +- 78 -4 +- 57 2 8834 19 Sep 05 13:03 LAG2 5 0 13 -12 +- 19 -8 +- 63 2 8834 19 Sep 05 17:03 LAG1 13 0 14 0 +- 11 -10 +- 9 4 8834 19 Sep 05 20:51 LAG1 6 0 18 -22 +- 22 10 +- 29 2 8834 20 Sep 05 00:07 LAG1 5 0 25 -17 +- 34 7 +- 28 4 8834 20 Sep 05 02:50 LAG2 1 0 27 0 +- 0 0 +- 0 0 8834 20 Sep 05 03:29 LAG1 3 0 29 10 +- 191 17 +- 84 2 8834 20 Sep 05 19:17 LAG1 8 0 18 -25 +- 31 -5 +- 21 2 8834 20 Sep 05 22:41 LAG1 6 0 15 10 +- 25 15 +- 20 6 8834 21 Sep 05 00:53 LAG2 7 0 6 -6 +- 28 -2 +- 15 4 8834 21 Sep 05 02:17 LAG1 5 0 11 26 +- 62 27 +- 63 8 8834 21 Sep 05 05:17 LAG2 10 0 13 5 +- 17 8 +- 17 3 8834 21 Sep 05 05:45 LAG1 12 0 9 -6 +- 12 -5 +- 10 2 8834 21 Sep 05 23:25 LAG2 9 0 14 -6 +- 17 -8 +- 21 8 8834 22 Sep 05 00:51 LAG1 5 0 16 -17 +- 19 2 +- 8 1 8834 22 Sep 05 03:01 LAG2 10 0 12 -8 +- 15 2 +- 7 6 8834 22 Sep 05 04:23 LAG1 7 0 19 -18 +- 15 0 +- 10 3 8834 22 Sep 05 07:05 LAG2 16 0 9 -4 +- 10 2 +- 5 4 8834 22 Sep 05 07:59 LAG1 6 0 34 -34 +- 17 1 +- 14 3 8834 22 Sep 05 11:13 LAG2 5 0 15 -91 +- 115 -60 +- 73 4 8834 22 Sep 05 16:29 LAG1 14 0 8 -4 +- 11 -4 +- 9 4 8834 22 Sep 05 19:57 LAG1 7 0 6 32 +- 120 13 +- 47 4 8834 22 Sep 05 23:29 LAG1 11 0 15 -12 +- 13 0 +- 8 9 -------------------------------------------------------------------------------- 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 - 050922 0/ 53/ 0 0/ 22/ 0 75 1864 MD2LAS 050110 - 050922 0/117/ 0 0/ 52/ 0 169 1873 SIMLAS 050316 - 050915 0/ 42/ 0 0/ 16/ 0 58 1884 RIGLAS 050104 - 050918 0/ 69/ 0 3/ 42/ 3 117 1893 CRMLAS 050723 - 050829 0/ 13/ 0 0/ 0/ 0 13 6405 TIGO 050104 - 050923 11/ 24/ 2 11/ 35/ 2 85 6810 ZIMLAT 050101 - 050923 243/182/ 27 233/ 87/ 22 794 7080 MLRS25 050101 - 050922 39/ 83/ 4 27/ 73/ 10 236 7090 ML0514 050101 - 050922 144/406/ 37 125/350/ 30 1092 7105 ML0725 050108 - 050922 10/ 74/ 8 27/ 69/ 8 196 7110 ML0414 050118 - 050922 96/163/ 27 68/119/ 14 487 7124 ML0819 050118 - 050916 1/ 37/ 0 1/ 21/ 1 61 7130 TL0425 050825 - 050901 1/ 3/ 0 2/ 3/ 0 9 7237 CHALAS 050102 - 050920 0/ 84/ 1 0/ 75/ 0 160 7249 BEJLAS 050101 - 050922 0/ 86/ 0 0/ 74/ 0 160 7308 CRLLAS 050111 - 050510 7/ 5/ 1 1/ 10/ 0 24 7355 TROS02 050603 - 050906 0/ 46/ 0 0/ 7/ 0 53 7358 GMSL 050802 - 050915 0/ 10/ 0 2/ 1/ 0 13 7405 TIGO 050105 - 050921 5/ 30/ 0 3/ 13/ 0 51 7501 ML0616 050117 - 050921 48/125/ 6 41/118/ 7 345 7806 METLAS 050301 - 050301 0/ 0/ 0 0/ 1/ 0 1 7810 ZIMLAT 050101 - 050923 220/180/ 26 227/ 80/ 22 755 7811 POLLAS 050111 - 050923 0/ 89/ 0 0/ 45/ 0 134 7824 SPNLAS 050108 - 050921 8/141/ 3 8/ 99/ 4 263 7825 STL3 050101 - 050920 312/356/ 40 200/303/ 31 1242 7832 SALRO 050101 - 050921 111/244/ 25 155/209/ 24 768 7835 GRASSE 050104 - 050705 0/ 32/ 2 0/ 33/ 3 70 7837 CHILAS 050102 - 050414 0/ 22/ 0 0/ 40/ 1 63 7838 SHOLAS 050106 - 050913 48/ 99/ 3 40/ 83/ 6 279 7839 AUSLAS 050103 - 050923 178/156/ 24 146/102/ 15 621 7840 RGOLAS 050102 - 050923 215/174/ 31 179/ 97/ 24 720 7841 GFZLA3 050105 - 050923 50/ 76/ 14 21/ 66/ 9 236 7848 FTLR06 050515 - 050916 6/ 43/ 2 4/ 14/ 2 71 7941 MLROnn 050102 - 050922 64/131/ 8 102/100/ 21 426 8834 WLRS01 050109 - 050923 192/176/ 32 193/115/ 21 729 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050916.0 50.8 +/- 0.1 421.5 +/- 0.1 -32650.68 +/- 0.01 050917.0 51.3 +/- 0.1 421.9 +/- 0.1 -32651.46 +/- 0.02 050918.0 53.5 +/- 0.1 421.7 +/- 0.1 -32652.34 +/- 0.03 050919.0 52.6 +/- 0.1 421.6 +/- 0.1 -32653.51 +/- 0.04 050920.0 53.0 +/- 0.1 421.6 +/- 0.1 -32654.50 +/- 0.04 050921.0 52.9 +/- 0.1 420.5 +/- 0.1 -32655.38 +/- 0.05 050922.0 53.3 +/- 0.1 419.4 +/- 0.1 -32655.85 +/- 0.06 -------------------------------------------------------------- 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 ******************************************************************************** |