| Date: | 2005-04-01 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5148: Delft QL Report April 01, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-04-01 13:15:00 UTC Message No. 5148 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report April 01, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS April 1, 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, Apr 1, 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, Apr 1, 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 ------------------------------------------------------------------------------ 1824 Kiev, Ukraine 050330 - 050331 2 4 1831 Lviv, Ukraine 050331 - 050401 1 2 1884 Riga, Latvia 050330 - 050401 1 3 7080 McDonald Obs., Fort Davis, TX 050330 - 050330 - 1 7105 Greenbelt, Maryland 050331 - 050331 - 1 7110 Monument Peak, California 050331 - 050331 - 1 7124 Papeete, Tahiti 050330 - 050330 1 - 7237 Changchun, China 050330 - 050331 2 5 7501 Hartebeesthoek, SA (MOB-6) 050330 - 050331 2 1 7811 Borowiec, Poland 050330 - 050331 - 2 7825 Mount Stromlo, Australia 050330 - 050331 7 3 7832 Riyad, Saudi Arabia 050330 - 050330 - 2 7838 Simosato Observatory, Japan 050330 - 050331 1 2 7839 Graz, Austria 050401 - 050401 1 1 7841 Potsdam, Germany 050330 - 050401 5 5 7941 Matera, Italy (MLRO 532) 050331 - 050331 - 1 8834 Wettzell, Germany 050331 - 050401 6 6 ------ ------ --- --- TOTAL 050330 - 050401 29 40 ------------------------------------------------------------------------------ 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, Mar 24, 2005 to Fri, Apr 1, 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 18 22 Number of Passes 104/104 114/114 Number of Normal Points 1051/1042 1272/1270 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 1824 (Kiev) (position solved, acc. 200 mm) 1824 29 Mar 05 17:30 LAG2 9 0 62 -58 +- 211 0 +- 285 22 1824 29 Mar 05 21:51 LAG2 4 0 74 -443 +-2278 267 +-1351 44 1824 30 Mar 05 01:25 LAG1 7 0 52 -76 +- 492 68 +- 380 33 1824 30 Mar 05 01:42 LAG2 7 0 44 -44 +- 277 39 +- 333 25 1824 30 Mar 05 19:35 LAG2 7 0 65 -49 +- 371 -6 +- 337 48 1824 30 Mar 05 23:37 LAG2 6 0 44 -101 +- 798 -67 +- 586 31 1824 31 Mar 05 00:07 LAG1 8 0 89 317 +- 865 -173 +- 462 40 1824 31 Mar 05 17:55 LAG2 9 0 114 75 +- 343 -56 +- 303 105 1824 31 Mar 05 21:39 LAG2 7 0 78 136 +- 766 47 +- 500 34 1824 31 Mar 05 22:39 LAG1 4 0 159 -198 +-1244 381 +-1457 74 Station 1831 (Lviv) (position fixed, acc. 400 mm) 1831 31 Mar 05 21:44 LAG2 9 0 55 -47 +- 400 11 +- 503 26 Station 1864 (Maidanak) (position fixed, acc. 200 mm) 1864 27 Mar 05 17:15 LAG2 9 0 18 8 +- 204 5 +- 125 15 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 26 Mar 05 19:25 LAG2 2 0 125 844 +-9999 -765 +-9999 0 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 27 Mar 05 21:19 LAG2 11 0 12 11 +- 94 -1 +- 70 7 1884 28 Mar 05 00:21 LAG1 11 0 41 -19 +- 90 21 +- 101 29 1884 30 Mar 05 23:39 LAG2 9 0 8 -4 +- 106 1 +- 133 7 1884 31 Mar 05 21:37 LAG2 20 0 18 12 +- 67 5 +- 44 9 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 24 Mar 05 20:21 LAG1 11 0 4 -2 +- 29 3 +- 19 1 7080 28 Mar 05 08:08 LAG1 15 0 22 -16 +- 17 -10 +- 14 5 7080 28 Mar 05 08:58 LAG2 8 0 15 27 +- 125 -25 +- 77 2 7080 28 Mar 05 11:42 LAG1 15 0 19 2 +- 20 -11 +- 11 4 7080 28 Mar 05 12:49 LAG2 11 0 6 1 +- 21 -5 +- 23 2 7080 30 Mar 05 13:27 LAG2 9 0 10 23 +- 149 -6 +- 70 3 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 24 Mar 05 08:15 LAG1 3 0 3 -10 +- 148 -6 +- 126 2 7090 24 Mar 05 10:37 LAG2 14 0 6 1 +- 11 -2 +- 7 5 7090 24 Mar 05 11:37 LAG1 12 0 7 2 +- 12 -8 +- 14 2 7090 24 Mar 05 14:45 LAG1 15 0 13 -8 +- 11 6 +- 10 1 7090 24 Mar 05 18:07 LAG1 11 0 18 -12 +- 15 5 +- 10 1 7090 25 Mar 05 08:49 LAG2 12 1 18 7 +- 15 12 +- 16 2 7090 25 Mar 05 12:43 LAG2 11 0 9 5 +- 13 5 +- 12 3 7090 25 Mar 05 13:47 LAG1 3 0 5 -11 +- 85 31 +- 172 1 7090 25 Mar 05 17:19 LAG1 4 0 28 -35 +- 179 25 +- 72 1 7090 25 Mar 05 20:26 LAG1 10 0 5 -4 +- 13 -2 +- 13 2 7090 26 Mar 05 09:08 LAG1 7 2 16 8 +- 44 -15 +- 39 12 7090 26 Mar 05 11:15 LAG2 7 0 9 -6 +- 96 -1 +- 48 2 7090 27 Mar 05 09:09 LAG2 5 0 6 8 +- 33 -15 +- 60 3 7090 27 Mar 05 12:59 LAG2 9 0 7 -5 +- 17 4 +- 24 0 7090 28 Mar 05 16:33 LAG1 6 0 14 -13 +- 27 13 +- 17 4 7090 28 Mar 05 19:49 LAG1 9 0 11 16 +- 25 6 +- 22 2 7090 29 Mar 05 08:29 LAG1 14 0 11 -2 +- 13 -5 +- 9 4 7090 29 Mar 05 09:07 LAG2 21 0 10 -7 +- 9 -3 +- 6 2 7090 29 Mar 05 11:51 LAG1 7 0 10 0 +- 16 -13 +- 35 8 7090 29 Mar 05 14:57 LAG1 12 0 7 -6 +- 12 1 +- 8 4 7090 29 Mar 05 18:29 LAG1 5 0 23 -8 +- 32 12 +- 25 0 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 30 Mar 05 04:47 LAG2 22 0 6 -4 +- 9 1 +- 5 3 7105 31 Mar 05 02:46 LAG2 10 0 8 -11 +- 42 -10 +- 23 2 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 25 Mar 05 19:07 LAG1 9 0 11 6 +- 20 5 +- 19 2 7110 25 Mar 05 22:29 LAG1 4 0 13 -16 +- 91 -2 +- 80 3 7110 26 Mar 05 04:11 LAG2 17 0 9 2 +- 12 -7 +- 8 2 7110 26 Mar 05 08:09 LAG2 13 0 16 -12 +- 11 -10 +- 10 1 7110 27 Mar 05 13:03 LAG1 17 0 10 -7 +- 10 6 +- 7 2 7110 27 Mar 05 14:33 LAG2 13 0 3 0 +- 13 0 +- 7 3 7110 29 Mar 05 20:55 LAG1 4 0 19 -7 +- 287 11 +- 123 2 7110 30 Mar 05 04:21 LAG2 16 0 8 7 +- 10 1 +- 6 3 7110 31 Mar 05 02:43 LAG2 11 0 4 1 +- 12 -2 +- 11 2 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 29 Mar 05 11:25 LAG1 4 0 27 48 +- 385 -29 +- 147 1 7124 30 Mar 05 09:53 LAG1 8 0 6 16 +- 43 -10 +- 28 3 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 24 Mar 05 15:51 LAG2 3 0 28 55 +-2294 -39 +-1085 1 7237 24 Mar 05 17:31 LAG1 15 0 16 -8 +- 39 -9 +- 32 8 7237 24 Mar 05 19:39 LAG2 9 0 22 3 +- 58 -24 +- 63 8 7237 25 Mar 05 17:36 LAG2 8 0 24 12 +- 66 -28 +- 67 9 7237 25 Mar 05 19:41 LAG1 13 0 28 23 +- 42 -8 +- 29 5 7237 28 Mar 05 11:51 LAG2 11 0 32 -23 +- 47 -12 +- 35 7 7237 28 Mar 05 16:13 LAG2 3 0 13 67 +- 757 -49 +- 505 7 7237 30 Mar 05 12:08 LAG2 13 0 34 -17 +- 54 -13 +- 37 6 7237 30 Mar 05 16:05 LAG2 5 0 37 13 +- 81 -28 +- 84 6 7237 30 Mar 05 19:54 LAG1 4 0 33 47 +- 240 7 +- 126 3 7237 30 Mar 05 20:22 LAG2 2 0 32 25 +- 308 -16 +- 641 0 7237 31 Mar 05 14:33 LAG2 6 0 57 -17 +- 460 -19 +- 225 8 7237 31 Mar 05 18:17 LAG2 4 0 55 2 +- 81 -42 +- 63 7 7237 31 Mar 05 18:37 LAG1 11 0 10 4 +- 46 6 +- 34 5 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 28 Mar 05 15:45 LAG2 8 0 14 -8 +- 59 -10 +- 54 9 7249 28 Mar 05 19:15 LAG1 6 0 13 -14 +- 165 -16 +- 121 8 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 26 Mar 05 16:25 LAG1 9 0 6 -3 +- 17 6 +- 15 3 7501 26 Mar 05 18:19 LAG2 20 0 3 0 +- 9 1 +- 6 2 7501 27 Mar 05 16:23 LAG2 24 0 16 16 +- 8 0 +- 5 3 7501 28 Mar 05 18:45 LAG2 9 0 9 6 +- 14 5 +- 17 3 7501 28 Mar 05 20:33 LAG1 2 0 4 16 +- 186 -23 +- 356 0 7501 29 Mar 05 00:13 LAG1 3 0 19 96 +- 847 -41 +- 306 0 7501 30 Mar 05 18:51 LAG2 17 0 10 4 +- 10 -10 +- 10 1 7501 30 Mar 05 21:21 LAG1 6 0 27 13 +- 74 8 +- 48 0 7501 31 Mar 05 00:27 LAG1 10 0 14 14 +- 13 0 +- 6 2 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 29 Mar 05 21:25 LAG2 5 0 33 16 +- 81 18 +- 54 10 7811 30 Mar 05 19:41 LAG2 5 0 21 20 +- 83 3 +- 125 4 7811 31 Mar 05 21:38 LAG2 4 0 30 22 +- 107 1 +- 91 21 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 24 Mar 05 04:41 LAG1 12 0 18 -25 +- 26 5 +- 14 4 7825 24 Mar 05 07:01 LAG2 11 0 7 9 +- 39 -9 +- 23 1 7825 24 Mar 05 07:57 LAG1 16 0 5 2 +- 10 -3 +- 8 1 7825 24 Mar 05 10:45 LAG2 12 0 5 -3 +- 12 -3 +- 11 2 7825 24 Mar 05 11:17 LAG1 11 0 10 -1 +- 12 -9 +- 12 2 7825 24 Mar 05 14:31 LAG1 14 0 11 -5 +- 12 2 +- 5 8 7825 24 Mar 05 18:09 LAG1 11 1 14 0 +- 14 -6 +- 16 13 7825 25 Mar 05 03:09 LAG1 13 0 5 -3 +- 13 -2 +- 13 2 7825 25 Mar 05 04:45 LAG2 14 0 12 9 +- 11 8 +- 13 2 7825 25 Mar 05 06:37 LAG1 12 0 4 2 +- 12 2 +- 8 1 7825 25 Mar 05 09:07 LAG2 12 0 25 5 +- 29 11 +- 17 3 7825 25 Mar 05 13:25 LAG1 12 0 12 -14 +- 14 7 +- 11 1 7825 25 Mar 05 16:43 LAG1 21 0 11 -11 +- 9 1 +- 5 4 7825 25 Mar 05 22:35 LAG2 17 0 16 14 +- 10 -10 +- 7 4 7825 26 Mar 05 02:31 LAG2 20 0 15 2 +- 10 -11 +- 8 3 7825 26 Mar 05 05:21 LAG1 7 0 8 -9 +- 17 -6 +- 23 1 7825 26 Mar 05 07:09 LAG2 15 0 8 1 +- 20 -5 +- 12 3 7825 26 Mar 05 08:39 LAG1 17 0 12 -6 +- 10 -7 +- 7 2 7825 26 Mar 05 10:57 LAG2 14 0 5 1 +- 11 -2 +- 12 5 7825 26 Mar 05 11:59 LAG1 9 0 9 -1 +- 16 -7 +- 14 5 7825 26 Mar 05 15:19 LAG1 11 0 9 -8 +- 13 0 +- 6 4 7825 27 Mar 05 03:50 LAG1 18 1 6 -5 +- 10 0 +- 7 3 7825 27 Mar 05 05:03 LAG2 18 0 8 9 +- 12 -2 +- 9 2 7825 27 Mar 05 07:17 LAG1 14 0 4 4 +- 14 1 +- 9 1 7825 27 Mar 05 08:59 LAG2 20 0 12 0 +- 9 8 +- 6 3 7825 27 Mar 05 22:47 LAG2 21 0 10 7 +- 9 -6 +- 7 3 7825 28 Mar 05 02:30 LAG1 9 0 7 5 +- 14 -3 +- 23 2 7825 28 Mar 05 03:09 LAG2 13 0 2 0 +- 23 0 +- 16 2 7825 28 Mar 05 06:01 LAG1 17 0 6 0 +- 10 -3 +- 6 1 7825 28 Mar 05 07:27 LAG2 13 0 2 0 +- 30 0 +- 16 1 7825 28 Mar 05 11:13 LAG2 7 0 7 5 +- 21 0 +- 40 4 7825 30 Mar 05 06:45 LAG1 15 0 9 7 +- 11 0 +- 8 6 7825 30 Mar 05 07:23 LAG2 16 0 6 4 +- 11 1 +- 6 3 7825 30 Mar 05 13:31 LAG1 18 0 8 -1 +- 10 -1 +- 6 7 7825 30 Mar 05 16:55 LAG1 12 0 21 7 +- 13 11 +- 6 8 7825 31 Mar 05 05:17 LAG2 14 0 15 4 +- 11 -8 +- 7 4 7825 31 Mar 05 05:23 LAG1 7 0 10 -12 +- 22 -4 +- 10 6 7825 31 Mar 05 08:59 LAG1 12 0 3 -2 +- 12 0 +- 13 2 7825 31 Mar 05 09:23 LAG2 23 0 8 3 +- 8 4 +- 6 4 7825 31 Mar 05 12:11 LAG1 12 0 15 0 +- 12 -8 +- 8 8 7825 31 Mar 05 15:33 LAG1 15 0 12 -2 +- 11 2 +- 5 11 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 25 Mar 05 23:45 LAG1 13 0 11 6 +- 19 3 +- 11 2 7832 26 Mar 05 19:09 LAG2 10 0 11 -8 +- 24 -1 +- 26 7 7832 27 Mar 05 01:59 LAG1 8 0 18 17 +- 23 6 +- 33 2 7832 28 Mar 05 15:19 LAG2 12 0 4 1 +- 20 -4 +- 23 2 7832 28 Mar 05 19:16 LAG2 7 0 10 7 +- 44 -2 +- 47 5 7832 28 Mar 05 23:01 LAG1 11 0 12 -6 +- 30 -8 +- 16 2 7832 28 Mar 05 23:33 LAG2 14 0 7 -3 +- 18 -8 +- 24 5 7832 29 Mar 05 17:13 LAG2 12 0 24 2 +- 19 14 +- 11 4 7832 29 Mar 05 21:26 LAG2 8 0 16 -13 +- 58 2 +- 57 1 7832 29 Mar 05 21:43 LAG1 8 0 5 2 +- 76 5 +- 53 2 7832 30 Mar 05 01:11 LAG1 8 0 11 24 +- 108 15 +- 50 6 7832 30 Mar 05 01:41 LAG2 9 0 4 14 +- 94 7 +- 54 2 7832 30 Mar 05 15:27 LAG2 10 0 11 -13 +- 29 -17 +- 33 1 7832 30 Mar 05 19:29 LAG2 7 0 12 -28 +- 60 -22 +- 55 3 Station 7837 (Shanghai Observatory) (position fixed, acc. 50 mm) 7837 24 Mar 05 11:15 LAG2 12 0 17 15 +- 47 1 +- 57 7 7837 24 Mar 05 15:13 LAG2 14 0 8 -5 +- 43 -3 +- 39 6 7837 24 Mar 05 17:41 LAG1 13 0 10 -3 +- 42 5 +- 35 7 7837 28 Mar 05 11:39 LAG2 12 0 20 -15 +- 47 -9 +- 43 14 7837 29 Mar 05 13:52 LAG2 7 0 26 9 +- 64 18 +- 58 5 7837 29 Mar 05 17:53 LAG1 8 0 19 41 +- 126 26 +- 87 8 7837 29 Mar 05 18:07 LAG2 12 0 16 -7 +- 47 21 +- 59 5 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 24 Mar 05 01:41 LAG1 11 0 67 65 +- 29 -3 +- 28 8 7838 25 Mar 05 13:17 LAG2 23 0 42 25 +- 20 18 +- 11 2 7838 29 Mar 05 01:49 LAG1 17 0 39 36 +- 23 -9 +- 16 3 7838 29 Mar 05 05:17 LAG1 12 0 16 16 +- 29 0 +- 13 4 7838 30 Mar 05 11:48 LAG2 26 0 49 47 +- 18 5 +- 10 5 7838 31 Mar 05 02:49 LAG1 9 0 43 37 +- 44 7 +- 39 1 7838 31 Mar 05 09:59 LAG2 23 0 21 15 +- 20 9 +- 13 3 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 24 Mar 05 04:41 LAG2 22 0 10 10 +- 8 0 +- 5 1 7839 24 Mar 05 05:57 LAG1 15 0 7 -7 +- 11 1 +- 8 2 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 24 Mar 05 00:29 LAG2 21 0 10 7 +- 14 -3 +- 8 2 7840 24 Mar 05 02:24 LAG1 13 0 12 7 +- 18 -8 +- 14 2 7840 24 Mar 05 22:39 LAG2 8 0 6 8 +- 34 4 +- 21 1 7840 25 Mar 05 20:49 LAG2 16 0 17 12 +- 17 -11 +- 11 2 7840 26 Mar 05 00:43 LAG2 25 0 7 5 +- 13 2 +- 7 2 7840 26 Mar 05 03:07 LAG1 19 0 28 9 +- 15 -13 +- 8 7 7840 26 Mar 05 04:51 LAG2 22 0 15 14 +- 14 0 +- 9 4 7840 26 Mar 05 06:41 LAG1 18 0 16 0 +- 15 -9 +- 9 3 7840 26 Mar 05 10:09 LAG1 9 0 21 -16 +- 22 -14 +- 18 1 7840 26 Mar 05 13:47 LAG1 8 0 7 5 +- 23 -6 +- 25 1 7840 26 Mar 05 22:59 LAG2 7 0 11 7 +- 26 4 +- 17 1 7840 27 Mar 05 21:37 LAG2 3 0 1 20 +-1004 -9 +- 454 0 7840 28 Mar 05 00:26 LAG1 3 0 5 3 +- 195 10 +- 241 1 7840 28 Mar 05 01:01 LAG2 14 0 24 14 +- 21 7 +- 13 5 7840 28 Mar 05 19:25 LAG2 6 0 3 -2 +- 27 5 +- 47 2 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 24 Mar 05 22:55 LAG2 15 0 5 -4 +- 13 2 +- 9 3 7841 25 Mar 05 00:56 LAG1 13 0 8 -5 +- 11 4 +- 11 1 7841 25 Mar 05 02:49 LAG2 12 0 9 4 +- 16 4 +- 12 8 7841 28 Mar 05 19:17 LAG2 9 0 5 -8 +- 27 -7 +- 25 2 7841 28 Mar 05 23:15 LAG2 6 0 6 2 +- 74 5 +- 48 0 7841 29 Mar 05 06:13 LAG1 7 0 23 9 +- 16 -19 +- 23 15 7841 29 Mar 05 09:35 LAG1 15 0 13 -13 +- 11 0 +- 7 2 7841 30 Mar 05 04:43 LAG1 20 0 7 3 +- 9 1 +- 5 4 7841 30 Mar 05 05:35 LAG2 13 0 5 4 +- 16 -5 +- 13 3 7841 30 Mar 05 08:12 LAG1 11 2 20 8 +- 14 7 +- 12 17 7841 30 Mar 05 19:35 LAG2 14 0 3 2 +- 11 -1 +- 10 2 7841 30 Mar 05 23:27 LAG2 9 0 6 0 +- 33 3 +- 23 3 7841 30 Mar 05 23:55 LAG1 8 0 6 5 +- 16 -3 +- 28 3 7841 31 Mar 05 06:51 LAG1 17 0 11 9 +- 10 0 +- 6 6 7841 31 Mar 05 10:15 LAG1 14 0 26 21 +- 13 5 +- 8 18 7841 31 Mar 05 21:41 LAG2 14 0 4 0 +- 12 1 +- 9 3 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 28 Mar 05 00:21 LAG1 10 0 12 8 +- 22 9 +- 12 5 7941 29 Mar 05 07:30 LAG2 13 0 8 1 +- 13 -11 +- 16 1 7941 31 Mar 05 21:45 LAG2 8 0 5 4 +- 23 0 +- 26 2 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 24 Mar 05 00:41 LAG2 5 0 7 34 +- 119 23 +- 70 2 8834 24 Mar 05 02:22 LAG1 7 0 6 7 +- 40 3 +- 28 5 8834 24 Mar 05 09:11 LAG2 3 0 7 56 +- 371 -43 +- 276 5 8834 24 Mar 05 09:23 LAG1 5 0 24 -34 +- 45 -11 +- 44 1 8834 24 Mar 05 12:49 LAG1 19 0 16 -16 +- 10 6 +- 5 4 8834 24 Mar 05 22:41 LAG2 4 0 13 1 +- 64 7 +- 34 2 8834 25 Mar 05 01:13 LAG1 7 0 13 -23 +- 31 28 +- 36 6 8834 25 Mar 05 02:55 LAG2 4 0 19 -47 +- 78 -24 +- 61 2 8834 26 Mar 05 14:01 LAG1 3 0 8 29 +- 241 -14 +- 146 6 8834 26 Mar 05 23:23 LAG2 3 0 17 -13 +- 159 -2 +- 103 0 8834 27 Mar 05 01:55 LAG1 5 1 13 3 +- 21 19 +- 32 0 8834 27 Mar 05 03:17 LAG2 4 0 6 4 +- 28 18 +- 70 4 8834 27 Mar 05 05:48 LAG1 1 0 24 0 +- 0 0 +- 0 0 8834 27 Mar 05 12:17 LAG1 4 0 19 -1 +- 95 12 +- 68 1 8834 29 Mar 05 13:11 LAG1 2 0 6 21 +- 267 20 +- 363 0 8834 29 Mar 05 21:27 LAG2 6 0 17 -9 +- 17 11 +- 12 1 8834 30 Mar 05 01:21 LAG1 2 0 4 -1 +- 195 3 +- 215 0 8834 30 Mar 05 04:41 LAG1 5 0 20 14 +- 201 14 +- 85 3 8834 30 Mar 05 05:39 LAG2 7 0 19 -11 +- 20 -12 +- 27 5 8834 30 Mar 05 08:13 LAG1 3 0 22 0 +- 270 13 +- 160 3 8834 31 Mar 05 03:27 LAG1 10 0 5 3 +- 13 0 +- 8 4 8834 31 Mar 05 03:35 LAG2 4 0 11 -29 +- 129 -25 +- 82 2 8834 31 Mar 05 06:59 LAG1 11 0 11 7 +- 13 4 +- 12 6 8834 31 Mar 05 07:41 LAG2 10 0 5 -1 +- 20 -3 +- 26 3 8834 31 Mar 05 10:30 LAG1 9 0 25 -17 +- 26 -5 +- 16 2 8834 31 Mar 05 14:05 LAG1 11 0 12 25 +- 26 -13 +- 16 4 8834 31 Mar 05 17:56 LAG2 6 0 12 -18 +- 44 19 +- 50 10 8834 31 Mar 05 21:35 LAG2 7 0 18 -22 +- 23 -5 +- 19 4 -------------------------------------------------------------------------------- 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 040701 - 050331 0/ 23/ 0 0/ 31/ 0 54 1831 LVIL 040815 - 050401 0/ 26/ 0 0/ 34/ 0 60 1864 MD2LAS 040701 - 050327 0/ 90/ 0 0/ 80/ 0 170 1873 SIMLAS 040703 - 050326 0/ 25/ 0 0/ 17/ 0 42 1884 RIGLAS 040712 - 050401 0/ 46/ 1 0/ 32/ 2 81 1893 CRMLAS 040705 - 041012 0/ 45/ 0 0/ 35/ 0 80 6405 TIGO 040710 - 050323 10/ 13/ 1 7/ 19/ 1 51 6810 ZIMLAT 040805 - 050209 188/116/ 21 111/108/ 19 563 7080 MLRS25 040701 - 050330 59/ 65/ 5 54/ 82/ 6 271 7090 ML0514 040716 - 050329 140/406/ 35 122/263/ 30 996 7105 ML0725 040701 - 050331 0/ 86/ 4 2/109/ 7 208 7110 ML0414 040701 - 050331 80/134/ 18 80/146/ 20 478 7124 ML0819 040705 - 050330 0/ 33/ 0 0/ 14/ 0 47 7231 WUHA01 040701 - 041208 0/ 8/ 0 0/ 20/ 0 28 7237 CHALAS 040702 - 050331 0/155/ 1 0/173/ 1 330 7249 BEJLAS 040701 - 050328 0/107/ 0 0/133/ 0 240 7308 CRLLAS 041201 - 050307 9/ 11/ 2 3/ 15/ 0 40 7355 TROS02 040702 - 040829 0/ 37/ 0 0/ 29/ 0 66 7405 TIGO 040710 - 050320 6/ 28/ 0 3/ 10/ 0 47 7501 ML0616 040701 - 050331 21/ 39/ 4 58/ 81/ 6 209 7604 BREF 041017 - 041021 0/ 1/ 0 0/ 2/ 0 3 7806 METLAS 040720 - 050301 0/ 16/ 0 0/ 11/ 0 27 7810 ZIMLAT 040701 - 050209 242/142/ 27 136/127/ 23 697 7811 POLLAS 040706 - 050331 0/ 55/ 0 0/ 69/ 0 124 7824 SPNLAS 040701 - 050316 0/106/ 0 0/ 99/ 0 205 7825 STL3 040807 - 050331 147/230/ 37 143/153/ 24 734 7832 SALRO 040702 - 050330 147/229/ 19 188/272/ 26 881 7835 GRASSE 040702 - 050321 0/ 49/ 2 0/ 42/ 2 95 7836 GFZLAS 040701 - 040701 0/ 1/ 0 0/ 0/ 0 1 7837 CHILAS 040704 - 050329 0/100/ 0 0/142/ 2 244 7838 SHOLAS 040701 - 050331 65/120/ 4 80/152/ 7 428 7839 AUSLAS 040701 - 050401 201/173/ 29 95/167/ 23 688 7840 RGOLAS 040701 - 050328 143/109/ 24 81/108/ 15 480 7841 GFZLA3 040702 - 050401 53/ 66/ 16 27/ 81/ 10 253 7845 GRASLL 040705 - 040920 11/ 14/ 0 3/ 12/ 1 41 7941 MLROnn 040701 - 050331 94/ 69/ 10 80/ 80/ 7 340 8834 WLRS01 040701 - 050401 224/145/ 28 135/157/ 21 710 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050325.0 -16.7 +/- 0.1 232.9 +/- 0.1 -32626.20 +/- 0.02 050326.0 -18.7 +/- 0.1 234.6 +/- 0.1 -32627.47 +/- 0.03 050327.0 -19.1 +/- 0.1 236.0 +/- 0.1 -32628.65 +/- 0.03 050328.0 -21.4 +/- 0.1 238.4 +/- 0.1 -32629.81 +/- 0.04 050329.0 -22.2 +/- 0.1 239.5 +/- 0.1 -32630.66 +/- 0.05 050330.0 -24.2 +/- 0.1 240.7 +/- 0.1 -32631.21 +/- 0.06 050331.0 -27.0 +/- 0.1 241.9 +/- 0.1 -32631.55 +/- 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 ******************************************************************************** |