| Date: | 2005-05-11 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5314: Delft QL Report May 11, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-05-11 13:15:00 UTC Message No. 5314 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report May 11, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS May 11, 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 Wed, May 11, 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 Wed, May 11, 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 ------------------------------------------------------------------------------ 1864 Maidanak, Uzbekistan (site 2) 050510 - 050510 1 1 1873 Simeiz, Crimea, Ukraine 050509 - 050510 1 2 6810 Zimmerwald 846, Switzerland 050509 - 050511 4 1 7080 McDonald Obs., Fort Davis, TX 050509 - 050509 - 1 7090 Yarragadee, Australia 050509 - 050509 2 2 7105 Greenbelt, Maryland 050509 - 050510 - 2 7110 Monument Peak, California 050509 - 050509 1 - 7810 Zimmerwald 423, Switzerland 050509 - 050511 4 1 7811 Borowiec, Poland 050509 - 050510 - 2 7824 San Fernando, Spain 050510 - 050511 - 2 7825 Mount Stromlo, Australia 050509 - 050509 5 3 7832 Riyad, Saudi Arabia 050510 - 050511 2 2 7840 Herstmonceux, United Kingdom 050509 - 050511 7 5 7841 Potsdam, Germany 050509 - 050511 2 1 7941 Matera, Italy (MLRO 532) 050509 - 050509 - 1 8834 Wettzell, Germany 050509 - 050511 5 5 ------ ------ --- --- TOTAL 050509 - 050511 34 31 ------------------------------------------------------------------------------ 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 Tue, May 3, 2005 to Wed, May 11, 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 21 21 Number of Passes 118/118 115/115 Number of Normal Points 1225/1216 1393/1385 Weighted RMS of Fit (mm) 14 11 ----------------------------------------------------------------------- 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 10 May 05 18:23 LAG2 9 0 26 -2 +- 297 3 +- 203 24 1864 10 May 05 20:41 LAG1 5 0 25 -26 +-2030 -23 +- 985 12 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 3 May 05 23:49 LAG1 2 0 127 695 +-9999 -222 +-5244 0 1873 9 May 05 20:19 LAG2 13 0 400 436 +- 231 -47 +- 183 58*CHK* 1873 9 May 05 22:09 LAG1 7 1 383 392 +- 268 -30 +- 204 60*CHK* 1873 10 May 05 22:38 LAG2 8 2 694 891 +- 964 -128 +- 588 73 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 8 May 05 21:57 LAG2 18 0 23 24 +- 71 -3 +- 51 2 1884 8 May 05 23:31 LAG1 6 0 11 13 +- 262 18 +- 247 4 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 4 May 05 10:05 LAG1 5 0 18 -12 +- 234 -3 +- 133 3 6810 4 May 05 13:37 LAG1 11 0 31 -2 +- 130 -19 +- 86 2 6810 4 May 05 17:59 LAG2 1 0 26 0 +- 0 0 +- 0 0 6810 8 May 05 08:07 LAG1 8 0 43 -34 +- 112 -5 +- 64 0 6810 8 May 05 11:09 LAG1 13 0 16 -8 +- 52 -7 +- 24 4 6810 8 May 05 13:49 LAG2 8 0 5 2 +- 66 0 +- 92 4 6810 9 May 05 06:33 LAG1 17 0 19 -19 +- 46 6 +- 30 5 6810 9 May 05 13:59 LAG1 7 0 34 -40 +- 333 4 +- 232 3 6810 9 May 05 16:03 LAG2 5 0 10 -5 +- 90 -3 +- 55 3 6810 10 May 05 05:37 LAG1 5 0 10 30 +- 421 -20 +- 226 1 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 7 May 05 05:17 LAG2 6 0 13 -13 +- 28 6 +- 75 2 7080 8 May 05 07:15 LAG2 15 0 13 0 +- 17 -8 +- 11 3 7080 8 May 05 08:40 LAG1 15 0 19 11 +- 17 -12 +- 11 2 7080 8 May 05 11:41 LAG2 8 0 9 10 +- 82 -1 +- 69 4 7080 8 May 05 12:25 LAG1 3 0 17 9 +- 406 -20 +- 312 0 7080 9 May 05 05:21 LAG2 18 0 4 -3 +- 17 3 +- 12 1 7080 9 May 05 07:13 LAG1 17 0 17 16 +- 16 0 +- 10 5 7080 9 May 05 09:27 LAG2 19 0 15 -6 +- 16 -7 +- 9 4 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 4 May 05 08:41 LAG1 10 0 11 4 +- 13 9 +- 14 4 7090 4 May 05 12:07 LAG1 6 0 10 -9 +- 41 -1 +- 46 0 7090 4 May 05 15:01 LAG1 22 0 8 -5 +- 9 2 +- 4 3 7090 4 May 05 18:41 LAG1 16 0 7 -1 +- 10 -7 +- 10 1 7090 4 May 05 19:13 LAG2 4 0 1 -3 +- 157 2 +- 129 1 7090 4 May 05 22:38 LAG2 12 0 13 -2 +- 12 -7 +- 6 4 7090 5 May 05 03:15 LAG2 7 0 7 -2 +- 16 6 +- 16 4 7090 5 May 05 13:49 LAG1 17 0 11 -5 +- 10 -4 +- 6 2 7090 5 May 05 17:13 LAG1 22 0 11 -11 +- 9 0 +- 4 3 7090 6 May 05 05:35 LAG2 2 0 6 68 +- 300 157 +- 699 0 7090 6 May 05 09:37 LAG1 3 0 24 14 +- 57 7 +- 42 1 7090 6 May 05 12:49 LAG1 9 0 9 -3 +- 27 10 +- 24 1 7090 6 May 05 15:57 LAG1 16 0 26 0 +- 12 12 +- 5 2 7090 6 May 05 18:56 LAG2 24 0 7 6 +- 8 -2 +- 6 3 7090 6 May 05 22:57 LAG2 4 0 20 -5 +- 291 -13 +- 162 4 7090 7 May 05 03:27 LAG2 13 0 11 0 +- 11 10 +- 13 6 7090 7 May 05 04:33 LAG1 14 0 17 -14 +- 11 4 +- 9 2 7090 7 May 05 07:36 LAG2 18 0 6 2 +- 11 3 +- 8 1 7090 7 May 05 08:11 LAG1 8 0 6 1 +- 19 -4 +- 15 3 7090 7 May 05 11:27 LAG1 10 0 17 -16 +- 14 -1 +- 20 2 7090 7 May 05 14:33 LAG1 19 0 5 0 +- 9 2 +- 5 3 7090 7 May 05 18:07 LAG1 15 0 4 -1 +- 11 0 +- 7 3 7090 7 May 05 21:03 LAG2 25 0 5 2 +- 8 -3 +- 5 2 7090 8 May 05 01:19 LAG2 13 0 10 -7 +- 12 0 +- 16 6 7090 8 May 05 05:39 LAG2 16 0 13 -7 +- 10 8 +- 8 6 7090 8 May 05 06:45 LAG1 15 0 15 -5 +- 11 -9 +- 7 4 7090 8 May 05 09:47 LAG2 9 0 18 17 +- 17 3 +- 34 2 7090 8 May 05 10:09 LAG1 11 0 11 11 +- 12 2 +- 16 1 7090 8 May 05 13:21 LAG1 13 0 2 0 +- 11 0 +- 9 2 7090 8 May 05 16:39 LAG1 19 0 18 0 +- 9 8 +- 4 1 7090 8 May 05 19:03 LAG2 21 0 5 -1 +- 9 2 +- 6 3 7090 8 May 05 23:35 LAG2 4 0 18 -15 +- 52 -5 +- 107 2 7090 9 May 05 03:43 LAG2 8 0 10 0 +- 25 12 +- 33 4 7090 9 May 05 05:23 LAG1 5 0 28 -26 +- 84 1 +- 54 0 7090 9 May 05 07:57 LAG2 4 0 4 -1 +- 21 -8 +- 81 3 7090 9 May 05 12:09 LAG1 11 0 7 0 +- 13 -8 +- 16 1 7090 9 May 05 15:23 LAG1 15 0 8 6 +- 10 2 +- 5 1 7090 9 May 05 17:33 LAG2 8 0 5 -2 +- 17 1 +- 45 5 7090 9 May 05 21:41 LAG2 8 0 9 14 +- 46 -10 +- 22 0 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 3 May 05 00:29 LAG2 26 0 2 -1 +- 8 0 +- 4 2 7105 7 May 05 09:29 LAG2 11 0 11 -16 +- 19 15 +- 21 3 7105 7 May 05 09:51 LAG1 13 0 14 0 +- 12 -12 +- 10 3 7105 9 May 05 23:21 LAG2 13 0 17 -9 +- 14 -5 +- 7 1 7105 10 May 05 03:51 LAG2 15 0 11 1 +- 25 5 +- 14 3 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 3 May 05 08:35 LAG1 11 0 3 1 +- 17 -1 +- 9 2 7110 3 May 05 09:09 LAG2 6 0 4 8 +- 113 -6 +- 56 1 7110 3 May 05 11:55 LAG1 7 0 11 -3 +- 16 -4 +- 8 4 7110 3 May 05 12:45 LAG2 9 0 8 -9 +- 19 -1 +- 33 2 7110 3 May 05 18:39 LAG1 12 0 17 -6 +- 13 11 +- 8 3 7110 4 May 05 02:35 LAG2 4 0 11 -7 +- 21 7 +- 15 1 7110 4 May 05 06:43 LAG2 8 0 13 3 +- 14 9 +- 10 2 7110 4 May 05 10:33 LAG1 2 0 7 -506 +-2956 -216 +-1248 0 7110 4 May 05 10:52 LAG2 2 0 15 -12 +- 45 2 +- 40 0 7110 5 May 05 19:29 LAG1 13 0 10 -12 +- 15 7 +- 8 1 7110 7 May 05 16:53 LAG1 7 0 7 4 +- 18 7 +- 28 2 7110 9 May 05 17:33 LAG1 4 0 19 4 +- 97 18 +- 86 10 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 3 May 05 09:07 LAG1 12 0 26 27 +- 13 -10 +- 8 2 7124 4 May 05 07:45 LAG1 8 0 7 2 +- 14 4 +- 12 5 7124 9 May 05 08:03 LAG1 1 0 19 0 +- 0 0 +- 0 0 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 5 May 05 12:25 LAG2 9 0 13 -3 +- 312 6 +- 150 10 7249 5 May 05 16:43 LAG1 14 0 19 -14 +- 41 -3 +- 30 11 7249 5 May 05 16:47 LAG2 2 0 30 576 +-8434 -236 +-3654 0 7249 5 May 05 20:13 LAG2 4 0 15 39 +- 437 24 +- 368 8 7249 5 May 05 20:21 LAG1 3 0 24 95 +- 410 73 +- 380 2 7249 7 May 05 12:29 LAG2 8 0 11 -16 +- 102 7 +- 96 4 7249 7 May 05 16:23 LAG2 18 0 13 0 +- 36 -3 +- 27 12 7249 7 May 05 17:37 LAG1 12 0 7 0 +- 44 2 +- 34 6 7249 8 May 05 14:29 LAG2 13 0 8 -1 +- 42 1 +- 39 8 7249 8 May 05 16:15 LAG1 12 0 21 10 +- 45 13 +- 45 8 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 4 May 05 17:59 LAG2 2 0 19 455 +-9999 -180 +-6611 0 7810 8 May 05 08:07 LAG1 8 0 34 -20 +- 112 -8 +- 64 3 7810 8 May 05 11:13 LAG1 10 0 16 0 +- 61 -8 +- 32 5 7810 8 May 05 13:49 LAG2 6 0 14 11 +- 78 -5 +- 108 4 7810 9 May 05 06:35 LAG1 10 0 11 -9 +- 58 4 +- 37 5 7810 9 May 05 13:59 LAG1 7 0 28 -13 +- 347 -10 +- 242 3 7810 9 May 05 16:05 LAG2 2 0 11 23 +- 577 34 +-1552 0 7810 10 May 05 05:37 LAG1 4 0 11 -24 +- 702 20 +- 415 2 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 5 May 05 19:32 LAG2 4 0 4 11 +- 391 5 +- 262 2 7811 9 May 05 19:59 LAG2 14 0 16 15 +- 53 3 +- 44 6 7811 10 May 05 22:17 LAG2 12 0 41 40 +- 58 0 +- 50 9 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 3 May 05 23:29 LAG2 3 0 51 52 +- 97 7 +- 447 0 7824 4 May 05 21:17 LAG2 4 0 36 36 +- 62 2 +- 67 6 7824 6 May 05 00:29 LAG1 9 0 57 59 +- 62 -1 +- 41 4 7824 7 May 05 19:55 LAG2 5 0 31 48 +- 266 -12 +- 178 4 7824 10 May 05 22:09 LAG2 16 0 26 27 +- 38 -1 +- 29 3 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 3 May 05 02:45 LAG1 6 1 5 -13 +- 102 -5 +- 60 3 7825 3 May 05 03:00 LAG2 24 0 7 4 +- 8 -1 +- 5 5 7825 3 May 05 06:19 LAG1 5 0 14 9 +- 19 6 +- 20 6 7825 3 May 05 16:29 LAG1 8 0 10 12 +- 20 6 +- 17 6 7825 3 May 05 16:53 LAG2 13 0 8 -8 +- 15 -1 +- 17 3 7825 3 May 05 20:51 LAG2 12 1 7 -4 +- 25 2 +- 19 3 7825 4 May 05 11:43 LAG1 9 0 11 -8 +- 14 8 +- 17 4 7825 4 May 05 15:01 LAG1 19 1 13 -10 +- 10 -4 +- 6 8 7825 4 May 05 18:52 LAG2 13 0 4 6 +- 18 -1 +- 9 2 7825 5 May 05 03:31 LAG1 13 0 12 -9 +- 12 -7 +- 8 2 7825 6 May 05 01:25 LAG2 14 0 15 12 +- 11 5 +- 9 8 7825 6 May 05 02:11 LAG1 8 0 15 -13 +- 15 -3 +- 11 2 7825 6 May 05 05:39 LAG1 6 0 4 16 +- 89 10 +- 48 1 7825 6 May 05 09:15 LAG1 8 0 6 -1 +- 25 7 +- 26 2 7825 7 May 05 00:52 LAG1 11 0 7 1 +- 12 9 +- 19 3 7825 7 May 05 03:35 LAG2 20 0 10 8 +- 9 -3 +- 6 4 7825 7 May 05 04:19 LAG1 16 0 7 3 +- 10 -3 +- 7 3 7825 7 May 05 08:07 LAG1 4 0 4 -2 +- 138 0 +- 103 2 7825 7 May 05 21:17 LAG2 27 0 13 11 +- 8 -6 +- 5 2 7825 8 May 05 01:31 LAG2 26 0 6 5 +- 8 0 +- 5 3 7825 8 May 05 02:51 LAG1 14 0 16 -15 +- 16 -12 +- 8 5 7825 8 May 05 05:39 LAG2 20 0 17 0 +- 9 14 +- 7 1 7825 8 May 05 06:27 LAG1 18 0 10 3 +- 10 -7 +- 7 1 7825 8 May 05 09:53 LAG1 12 0 14 -13 +- 13 -3 +- 13 1 7825 8 May 05 13:03 LAG1 19 0 6 -5 +- 9 0 +- 5 4 7825 8 May 05 15:43 LAG2 5 0 8 1 +- 19 30 +- 98 5 7825 8 May 05 16:59 LAG1 4 0 15 -19 +- 30 20 +- 104 2 7825 8 May 05 19:17 LAG2 13 0 5 4 +- 12 0 +- 8 3 7825 8 May 05 23:36 LAG2 16 0 6 -1 +- 10 -4 +- 10 3 7825 9 May 05 01:32 LAG1 11 0 7 -4 +- 12 6 +- 12 2 7825 9 May 05 03:49 LAG2 22 0 11 7 +- 9 3 +- 5 5 7825 9 May 05 05:09 LAG1 16 0 9 -7 +- 10 -2 +- 7 1 7825 9 May 05 08:33 LAG1 13 0 8 -6 +- 11 -5 +- 12 2 7825 9 May 05 11:43 LAG1 17 0 9 -7 +- 10 0 +- 5 5 7825 9 May 05 15:15 LAG1 11 0 13 -9 +- 28 2 +- 17 1 7825 9 May 05 17:25 LAG2 22 0 6 1 +- 9 0 +- 6 6 7825 9 May 05 22:05 LAG2 10 0 3 1 +- 63 -2 +- 37 2 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 3 May 05 00:48 LAG1 7 0 7 -4 +- 33 2 +- 44 3 7832 3 May 05 01:39 LAG2 10 0 19 6 +- 28 -15 +- 34 4 7832 3 May 05 15:15 LAG2 14 0 7 -6 +- 18 0 +- 16 3 7832 6 May 05 17:55 LAG2 7 0 7 -6 +- 25 2 +- 67 3 7832 6 May 05 19:29 LAG1 7 0 25 21 +- 29 13 +- 63 4 7832 7 May 05 09:17 LAG1 4 0 5 -53 +- 380 23 +- 169 1 7832 7 May 05 15:39 LAG2 23 0 8 -6 +- 13 0 +- 9 5 7832 7 May 05 20:02 LAG2 6 0 18 -16 +- 136 1 +- 103 1 7832 7 May 05 21:21 LAG1 11 0 9 -9 +- 21 0 +- 10 2 7832 8 May 05 00:09 LAG2 11 0 9 -6 +- 35 -11 +- 28 2 7832 8 May 05 01:03 LAG1 10 0 23 22 +- 21 -11 +- 27 3 7832 8 May 05 20:12 LAG1 6 0 12 13 +- 38 7 +- 59 5 7832 8 May 05 22:17 LAG2 9 0 9 -2 +- 49 -9 +- 37 2 7832 8 May 05 23:39 LAG1 9 0 3 2 +- 31 2 +- 26 3 7832 10 May 05 18:29 LAG2 9 0 5 3 +- 28 2 +- 36 2 7832 10 May 05 20:48 LAG1 7 0 11 -44 +- 148 -18 +- 70 7 7832 10 May 05 22:29 LAG2 11 0 11 -16 +- 36 -14 +- 26 2 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 3 May 05 23:37 LAG1 6 0 10 3 +- 71 9 +- 88 1 7835 3 May 05 23:49 LAG2 8 0 22 16 +- 264 3 +- 121 3 7835 4 May 05 21:17 LAG2 7 0 3 0 +- 36 1 +- 21 1 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 7 May 05 12:47 LAG2 10 0 33 13 +- 112 12 +- 67 6 7838 7 May 05 13:55 LAG1 17 0 29 26 +- 23 -6 +- 21 6 7838 7 May 05 16:31 LAG2 25 0 36 36 +- 19 0 +- 11 2 7838 7 May 05 17:29 LAG1 18 0 43 44 +- 23 -2 +- 13 2 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 3 May 05 00:33 LAG1 17 0 4 0 +- 10 -1 +- 4 1 7839 3 May 05 01:11 LAG2 18 0 5 5 +- 9 0 +- 6 2 7839 3 May 05 04:11 LAG1 18 0 15 -9 +- 9 8 +- 6 2 7839 4 May 05 17:14 LAG2 21 0 7 3 +- 9 -3 +- 5 1 7839 6 May 05 07:05 LAG1 6 0 26 -21 +- 17 9 +- 8 1 7839 6 May 05 21:35 LAG2 5 0 3 -1 +- 35 -2 +- 22 0 7839 8 May 05 21:49 LAG2 17 0 2 0 +- 10 -1 +- 6 1 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 4 May 05 21:15 LAG2 17 0 9 1 +- 16 4 +- 8 4 7840 5 May 05 01:18 LAG2 15 0 4 0 +- 17 -2 +- 9 1 7840 5 May 05 01:25 LAG1 15 0 23 1 +- 17 -11 +- 8 5 7840 5 May 05 05:07 LAG1 10 0 13 3 +- 20 -8 +- 15 4 7840 6 May 05 11:01 LAG1 4 0 6 6 +- 293 0 +- 147 3 7840 6 May 05 17:31 LAG2 19 0 3 0 +- 15 1 +- 10 2 7840 7 May 05 05:53 LAG1 15 0 18 16 +- 17 -8 +- 12 4 7840 7 May 05 09:15 LAG1 12 0 20 1 +- 19 -10 +- 10 4 7840 7 May 05 19:36 LAG2 20 0 8 -3 +- 14 4 +- 9 2 7840 7 May 05 23:37 LAG2 24 0 9 0 +- 13 -4 +- 7 5 7840 8 May 05 00:51 LAG1 21 0 14 7 +- 14 -4 +- 8 8 7840 8 May 05 04:27 LAG1 16 0 14 11 +- 17 -3 +- 11 4 7840 8 May 05 08:11 LAG1 9 0 22 -2 +- 48 -12 +- 30 1 7840 8 May 05 21:45 LAG2 17 0 6 1 +- 16 -1 +- 9 5 7840 8 May 05 23:37 LAG1 11 0 20 0 +- 22 14 +- 17 3 7840 9 May 05 01:49 LAG2 14 0 21 -2 +- 18 -12 +- 11 1 7840 9 May 05 03:09 LAG1 18 0 17 12 +- 15 4 +- 9 5 7840 9 May 05 06:41 LAG1 14 0 9 6 +- 19 3 +- 14 4 7840 9 May 05 10:21 LAG1 4 0 5 -3 +- 115 6 +- 96 1 7840 9 May 05 19:51 LAG2 20 0 8 -2 +- 14 4 +- 9 3 7840 9 May 05 23:51 LAG2 21 0 12 -1 +- 14 -7 +- 9 3 7840 10 May 05 01:41 LAG1 22 0 15 10 +- 14 -4 +- 7 9 7840 10 May 05 05:17 LAG1 11 0 22 21 +- 20 -2 +- 13 4 7840 10 May 05 09:05 LAG1 6 0 26 10 +- 146 -17 +- 70 2 7840 10 May 05 17:59 LAG2 19 0 7 6 +- 15 0 +- 10 3 7840 10 May 05 21:55 LAG2 17 0 6 -2 +- 16 -1 +- 9 4 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 6 May 05 21:45 LAG2 15 0 13 2 +- 11 -9 +- 9 5 7841 6 May 05 22:39 LAG1 9 1 6 9 +- 31 8 +- 30 5 7841 8 May 05 22:05 LAG2 7 0 5 5 +- 17 -1 +- 27 2 7841 9 May 05 19:51 LAG2 16 0 10 0 +- 10 5 +- 6 3 7841 9 May 05 22:16 LAG1 7 3 1147 1195 +- 57 -70 +- 78 5*CHK* Station 7941 (Matera) (position solved, acc. 10 mm) 7941 3 May 05 00:53 LAG1 4 0 3 -4 +- 60 -7 +- 62 0 7941 3 May 05 19:39 LAG2 8 0 3 5 +- 70 -2 +- 39 3 7941 3 May 05 23:43 LAG1 4 0 6 -15 +- 98 7 +- 74 0 7941 3 May 05 23:51 LAG2 11 0 4 16 +- 61 -8 +- 29 2 7941 7 May 05 09:29 LAG1 5 0 7 1 +- 113 -4 +- 59 1 7941 8 May 05 14:11 LAG2 4 0 10 46 +- 110 -34 +- 87 4 7941 9 May 05 16:05 LAG2 14 0 3 4 +- 18 -2 +- 11 2 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 3 May 05 01:00 LAG1 5 0 15 -22 +- 62 5 +- 44 3 8834 4 May 05 13:57 LAG1 3 0 27 90 +- 674 -60 +- 346 3 8834 4 May 05 17:24 LAG2 3 0 6 -31 +- 238 -17 +- 155 2 8834 5 May 05 19:47 LAG2 8 0 16 -28 +- 30 10 +- 18 5 8834 5 May 05 23:31 LAG2 15 0 14 -10 +- 11 2 +- 7 7 8834 6 May 05 00:24 LAG1 9 0 13 -14 +- 34 0 +- 19 5 8834 8 May 05 17:48 LAG2 6 0 18 -27 +- 65 -6 +- 41 5 8834 9 May 05 01:55 LAG2 9 0 13 -16 +- 17 -12 +- 16 3 8834 9 May 05 16:07 LAG2 7 0 9 -11 +- 24 5 +- 24 5 8834 9 May 05 19:57 LAG2 17 0 21 -21 +- 10 3 +- 6 3 8834 9 May 05 22:09 LAG1 10 0 23 -20 +- 16 4 +- 20 2 8834 10 May 05 00:03 LAG2 9 0 10 -15 +- 25 -8 +- 21 4 8834 10 May 05 01:47 LAG1 11 0 5 1 +- 12 -2 +- 9 4 8834 10 May 05 09:07 LAG1 3 0 30 -63 +- 563 13 +- 227 2 8834 10 May 05 14:15 LAG2 9 0 11 2 +- 15 -17 +- 22 2 8834 10 May 05 21:57 LAG2 20 0 8 -7 +- 9 0 +- 4 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 - 050404 0/ 24/ 0 0/ 31/ 0 55 1831 LVIL 040815 - 050404 0/ 27/ 0 0/ 37/ 0 64 1864 MD2LAS 040701 - 050510 0/102/ 0 0/ 98/ 0 200 1873 SIMLAS 040703 - 050510 0/ 31/ 0 0/ 27/ 0 58 1884 RIGLAS 040712 - 050508 0/ 50/ 1 0/ 50/ 3 104 1893 CRMLAS 040705 - 041012 0/ 45/ 0 0/ 35/ 0 80 6405 TIGO 040710 - 050426 12/ 16/ 2 10/ 21/ 2 63 6810 ZIMLAT 040805 - 050511 218/124/ 22 120/122/ 21 627 7080 MLRS25 040701 - 050509 67/ 78/ 5 60/106/ 8 324 7090 ML0514 040716 - 050509 160/488/ 41 162/292/ 36 1179 7105 ML0725 040701 - 050510 0/ 89/ 5 6/123/ 8 231 7110 ML0414 040701 - 050509 100/155/ 20 83/169/ 24 551 7124 ML0819 040705 - 050509 0/ 42/ 0 0/ 14/ 0 56 7231 WUHA01 040701 - 041208 0/ 8/ 0 0/ 20/ 0 28 7237 CHALAS 040702 - 050417 0/164/ 1 0/190/ 1 356 7249 BEJLAS 040701 - 050508 0/115/ 0 0/150/ 0 265 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 - 050420 7/ 30/ 0 3/ 10/ 0 50 7501 ML0616 040701 - 050425 24/ 52/ 4 62/ 82/ 7 231 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 - 050511 249/150/ 28 139/140/ 23 729 7811 POLLAS 040706 - 050510 0/ 63/ 0 0/ 86/ 0 149 7824 SPNLAS 040701 - 050511 1/113/ 0 0/125/ 1 240 7825 STL3 040807 - 050509 200/303/ 42 207/176/ 32 960 7832 SALRO 040702 - 050511 152/260/ 21 203/319/ 32 987 7835 GRASSE 040702 - 050504 0/ 54/ 2 0/ 53/ 2 111 7836 GFZLAS 040701 - 040701 0/ 1/ 0 0/ 0/ 0 1 7837 CHILAS 040704 - 050414 0/104/ 0 0/151/ 2 257 7838 SHOLAS 040701 - 050507 78/133/ 4 83/176/ 10 484 7839 AUSLAS 040701 - 050508 228/186/ 31 100/191/ 28 764 7840 RGOLAS 040701 - 050511 186/124/ 27 94/136/ 21 588 7841 GFZLA3 040702 - 050511 63/ 80/ 17 28/110/ 12 310 7845 GRASLL 040705 - 040920 11/ 14/ 0 3/ 12/ 1 41 7941 MLROnn 040701 - 050509 98/ 77/ 11 88/103/ 12 389 8834 WLRS01 040701 - 050511 262/164/ 30 155/193/ 26 830 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050504.0 -60.7 +/- 0.1 304.1 +/- 0.1 -32658.81 +/- 0.02 050505.0 -61.3 +/- 0.1 305.8 +/- 0.1 -32660.22 +/- 0.03 050506.0 -61.3 +/- 0.1 308.0 +/- 0.1 -32661.57 +/- 0.04 050507.0 -60.7 +/- 0.1 309.0 +/- 0.1 -32662.75 +/- 0.05 050508.0 -61.1 +/- 0.1 312.1 +/- 0.1 -32663.76 +/- 0.06 050509.0 -61.2 +/- 0.1 313.0 +/- 0.1 -32664.38 +/- 0.06 050510.0 -61.4 +/- 0.1 314.4 +/- 0.1 -32664.81 +/- 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 ******************************************************************************** |