| Date: | 2005-01-30 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 4873: Delft QL Report January 30, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-01-30 13:15:00 UTC Message No. 4873 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report January 30, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS January 29, 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 Sat, Jan 29, 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 Sat, Jan 29, 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 ------------------------------------------------------------------------------ 6405 Concepcion, Chile (TIGO 847) 050125 - 050127 1 2 6810 Zimmerwald 846, Switzerland 050127 - 050130 7 8 7080 McDonald Obs., Fort Davis, TX 050128 - 050129 2 - 7090 Yarragadee, Australia 050127 - 050129 4 7 7105 Greenbelt, Maryland 050127 - 050129 1 3 7110 Monument Peak, California 050128 - 050128 1 1 7237 Changchun, China 050129 - 050129 1 2 7249 Beijing, China 050128 - 050128 - 1 7405 Concepcion, Chile (TIGO 424) 050127 - 050128 2 1 7501 Hartebeesthoek, SA (MOB-6) 050128 - 050128 - 1 7810 Zimmerwald 423, Switzerland 050127 - 050130 7 8 7824 San Fernando, Spain 050127 - 050129 1 1 7825 Mount Stromlo, Australia 050127 - 050129 7 8 7832 Riyad, Saudi Arabia 050128 - 050130 4 6 7941 Matera, Italy (MLRO 532) 050129 - 050129 1 1 8834 Wettzell, Germany 050127 - 050129 3 5 ------ ------ --- --- TOTAL 050125 - 050130 42 55 ------------------------------------------------------------------------------ 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 Fri, Jan 21, 2005 to Sat, Jan 29, 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 119/119 95/ 95 Number of Normal Points 1244/1242 1004/1000 Weighted RMS of Fit (mm) 12 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 23 Jan 05 02:31 LAG2 1 0 0 0 +- 0 0 +- 0 0 1824 23 Jan 05 03:21 LAG1 3 0 13 -1 +-1352 1 +- 940 13 Station 6405 (Concepcion) (position solved, acc. 20 mm) 6405 25 Jan 05 04:47 LAG2 16 0 9 -3 +- 16 3 +- 7 3 6405 25 Jan 05 21:11 LAG1 9 0 11 -2 +- 40 10 +- 34 3 6405 25 Jan 05 22:47 LAG2 6 0 9 11 +- 72 15 +- 71 5 6405 26 Jan 05 00:23 LAG1 7 0 11 0 +- 30 4 +- 14 6 6405 26 Jan 05 03:25 LAG2 6 0 6 -1 +- 181 -2 +- 104 2 6405 26 Jan 05 03:51 LAG1 8 0 8 -14 +- 40 -14 +- 40 2 6405 26 Jan 05 06:57 LAG2 7 0 22 -36 +- 129 -32 +- 74 7 6405 27 Jan 05 21:51 LAG1 4 0 13 9 +- 99 19 +- 94 4 6405 27 Jan 05 23:05 LAG2 12 0 24 -23 +- 20 0 +- 16 4 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 22 Jan 05 11:36 LAG1 7 0 7 -10 +- 93 4 +- 53 1 6810 22 Jan 05 12:01 LAG2 20 0 28 -15 +- 48 -10 +- 31 3 6810 22 Jan 05 14:45 LAG1 22 0 20 -19 +- 39 5 +- 20 1 6810 22 Jan 05 18:27 LAG1 16 0 15 -15 +- 45 1 +- 43 3 6810 23 Jan 05 17:01 LAG1 21 0 13 -5 +- 40 -6 +- 26 6 6810 24 Jan 05 15:53 LAG1 5 0 16 -9 +- 92 -14 +- 135 2 6810 27 Jan 05 08:15 LAG1 15 0 9 -6 +- 47 -3 +- 31 3 6810 27 Jan 05 10:55 LAG2 6 0 4 9 +- 340 -5 +- 173 3 6810 27 Jan 05 11:47 LAG1 6 0 7 -6 +- 85 -2 +- 136 4 6810 27 Jan 05 18:55 LAG1 11 0 29 -31 +- 63 8 +- 106 3 6810 28 Jan 05 12:43 LAG2 9 0 7 3 +- 61 -6 +- 63 3 6810 28 Jan 05 13:44 LAG1 12 0 9 10 +- 62 2 +- 46 2 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 21 Jan 05 23:53 LAG1 10 0 15 6 +- 46 4 +- 27 2 7080 25 Jan 05 11:43 LAG1 7 0 8 8 +- 26 7 +- 38 1 7080 28 Jan 05 21:11 LAG1 10 0 27 24 +- 20 5 +- 14 4 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 21 Jan 05 11:21 LAG2 14 0 3 2 +- 11 1 +- 12 2 7090 21 Jan 05 11:51 LAG1 10 0 7 -10 +- 28 3 +- 17 4 7090 21 Jan 05 15:17 LAG1 3 0 1 3 +- 160 -2 +- 154 1 7090 21 Jan 05 15:25 LAG2 26 0 7 -3 +- 8 3 +- 5 1 7090 21 Jan 05 18:13 LAG1 17 0 6 -3 +- 10 3 +- 7 2 7090 21 Jan 05 19:53 LAG2 12 0 4 6 +- 22 -5 +- 15 1 7090 21 Jan 05 21:37 LAG1 13 0 11 -2 +- 11 5 +- 5 4 7090 22 Jan 05 09:38 LAG2 6 0 9 14 +- 67 -12 +- 41 5 7090 22 Jan 05 10:23 LAG1 9 0 19 -18 +- 15 0 +- 13 2 7090 22 Jan 05 13:29 LAG2 11 0 4 1 +- 15 1 +- 12 3 7090 22 Jan 05 13:45 LAG1 11 0 8 -1 +- 12 -9 +- 15 2 7090 22 Jan 05 17:17 LAG1 4 0 5 -4 +- 119 0 +- 90 3 7090 22 Jan 05 20:45 LAG1 4 0 7 -14 +- 265 9 +- 114 1 7090 23 Jan 05 07:35 LAG2 12 0 9 -7 +- 18 8 +- 15 6 7090 23 Jan 05 09:01 LAG1 8 0 19 -23 +- 18 6 +- 10 4 7090 23 Jan 05 11:27 LAG2 23 0 3 2 +- 8 0 +- 7 3 7090 23 Jan 05 12:23 LAG1 19 0 7 1 +- 10 4 +- 6 2 7090 23 Jan 05 15:39 LAG2 22 0 13 0 +- 8 8 +- 5 1 7090 23 Jan 05 18:53 LAG1 15 0 14 2 +- 11 6 +- 5 3 7090 23 Jan 05 19:55 LAG2 2 0 20 21 +- 78 1 +- 79 0 7090 24 Jan 05 11:23 LAG1 6 0 15 5 +- 78 -11 +- 43 1 7090 24 Jan 05 13:43 LAG2 22 0 2 1 +- 9 0 +- 7 1 7090 24 Jan 05 14:33 LAG1 7 0 7 0 +- 16 -15 +- 34 2 7090 24 Jan 05 17:45 LAG1 13 0 9 3 +- 12 -9 +- 11 1 7090 24 Jan 05 18:09 LAG2 18 0 6 4 +- 14 -5 +- 8 2 7090 24 Jan 05 21:09 LAG1 9 0 8 0 +- 16 -4 +- 8 0 7090 25 Jan 05 09:49 LAG1 5 0 12 -12 +- 21 -2 +- 29 2 7090 25 Jan 05 11:49 LAG2 21 0 13 2 +- 10 -11 +- 9 6 7090 25 Jan 05 13:15 LAG1 13 0 9 -2 +- 14 -6 +- 12 3 7090 25 Jan 05 15:57 LAG2 17 0 11 -2 +- 13 6 +- 9 1 7090 25 Jan 05 16:39 LAG1 6 0 4 0 +- 42 -3 +- 46 3 7090 25 Jan 05 19:39 LAG1 18 0 20 -4 +- 10 10 +- 6 2 7090 25 Jan 05 20:15 LAG2 11 0 13 16 +- 16 -14 +- 21 2 7090 26 Jan 05 08:37 LAG1 7 0 24 -28 +- 49 4 +- 35 7 7090 26 Jan 05 10:01 LAG2 5 0 6 9 +- 30 -17 +- 63 2 7090 26 Jan 05 11:45 LAG1 19 0 10 6 +- 9 4 +- 5 2 7090 26 Jan 05 13:53 LAG2 20 0 10 -6 +- 9 -4 +- 5 1 7090 26 Jan 05 15:17 LAG1 4 0 4 -6 +- 31 -13 +- 105 0 7090 26 Jan 05 18:07 LAG2 4 0 5 -32 +- 378 -12 +- 174 0 7090 27 Jan 05 10:33 LAG1 8 0 12 -11 +- 15 -1 +- 9 2 7090 27 Jan 05 11:53 LAG2 17 0 9 -6 +- 14 -2 +- 13 7 7090 27 Jan 05 13:53 LAG1 4 0 1 0 +- 129 0 +- 104 0 7090 27 Jan 05 16:21 LAG2 21 0 12 -7 +- 10 8 +- 6 2 7090 27 Jan 05 17:15 LAG1 12 0 5 4 +- 14 -3 +- 12 2 7090 27 Jan 05 20:27 LAG2 5 0 4 3 +- 23 -5 +- 79 1 7090 27 Jan 05 20:37 LAG1 18 0 7 -8 +- 11 2 +- 6 2 7090 28 Jan 05 10:13 LAG2 2 0 9 24 +- 87 58 +- 285 0 7090 28 Jan 05 12:33 LAG1 3 0 19 -200 +- 302 -109 +- 162 8 7090 28 Jan 05 14:13 LAG2 9 0 9 -12 +- 26 -12 +- 19 1 7090 28 Jan 05 18:15 LAG2 16 0 3 -3 +- 11 0 +- 5 2 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 24 Jan 05 07:25 LAG2 10 0 3 3 +- 30 0 +- 21 2 7105 24 Jan 05 09:25 LAG1 2 0 12 11 +- 93 -2 +- 268 0 7105 24 Jan 05 11:31 LAG2 5 0 8 -17 +- 57 -7 +- 41 2 7105 27 Jan 05 08:41 LAG1 9 0 17 18 +- 18 2 +- 23 1 7105 27 Jan 05 10:11 LAG2 8 0 6 -4 +- 52 -1 +- 31 1 7105 28 Jan 05 07:19 LAG1 3 0 17 8 +- 133 47 +- 266 6 7105 28 Jan 05 08:01 LAG2 18 0 9 -8 +- 11 -2 +- 7 1 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 22 Jan 05 11:08 LAG2 10 0 11 11 +- 13 -7 +- 16 0 7110 22 Jan 05 15:13 LAG2 2 0 25 410 +- 684 409 +- 713 0 7110 22 Jan 05 15:51 LAG1 4 0 9 -7 +- 32 4 +- 60 3 7110 23 Jan 05 13:29 LAG2 8 0 3 -6 +- 51 2 +- 32 1 7110 23 Jan 05 14:19 LAG1 13 0 4 0 +- 14 2 +- 9 3 7110 23 Jan 05 17:31 LAG2 7 0 3 -1 +- 19 1 +- 38 2 7110 28 Jan 05 11:09 LAG1 2 0 0 -3 +- 457 -4 +- 555 0 7110 28 Jan 05 11:45 LAG2 10 0 20 -9 +- 16 -6 +- 7 4 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 24 Jan 05 10:35 LAG2 3 0 16 20 +- 300 2 +- 174 1 7124 26 Jan 05 10:55 LAG2 6 0 33 10 +- 32 -29 +- 38 1 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 26 Jan 05 19:13 LAG2 3 0 8 -13 +- 202 11 +- 414 0 7237 26 Jan 05 21:18 LAG1 13 0 13 -6 +- 43 -5 +- 33 7 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 28 Jan 05 19:15 LAG2 2 0 0 0 +- 701 0 +-1110 0 Station 7405 (Concepcion) (position solved, acc. 20 mm) 7405 23 Jan 05 04:25 LAG1 7 0 22 18 +- 44 -5 +- 50 2 7405 23 Jan 05 04:45 LAG2 5 0 4 2 +- 111 -1 +- 90 2 7405 23 Jan 05 07:59 LAG1 7 0 18 10 +- 47 5 +- 31 2 7405 23 Jan 05 22:53 LAG2 10 0 7 8 +- 86 -8 +- 47 2 7405 23 Jan 05 23:41 LAG1 10 0 14 18 +- 31 15 +- 23 2 7405 25 Jan 05 01:55 LAG1 2 0 4 -31 +- 345 -34 +- 381 0 7405 26 Jan 05 00:31 LAG1 7 0 7 -7 +- 35 0 +- 31 2 7405 26 Jan 05 03:55 LAG1 3 0 23 9 +- 77 -16 +- 86 0 7405 26 Jan 05 07:23 LAG1 7 0 16 18 +- 40 -2 +- 36 1 7405 27 Jan 05 06:05 LAG1 3 0 20 20 +- 40 -9 +- 169 2 7405 27 Jan 05 23:36 LAG2 1 0 19 0 +- 0 0 +- 0 0 7405 28 Jan 05 01:24 LAG1 4 0 11 -12 +- 37 -7 +- 91 0 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 25 Jan 05 15:29 LAG2 8 0 10 -16 +- 47 17 +- 35 4 7501 25 Jan 05 19:35 LAG2 15 0 15 3 +- 11 13 +- 11 3 7501 26 Jan 05 03:31 LAG1 4 0 15 44 +- 170 -16 +- 91 1 7501 26 Jan 05 15:47 LAG1 12 0 22 15 +- 12 11 +- 8 3 7501 28 Jan 05 17:45 LAG2 17 0 11 0 +- 10 12 +- 12 2 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 22 Jan 05 11:36 LAG1 7 0 9 2 +- 84 4 +- 56 3 7810 22 Jan 05 12:01 LAG2 20 0 24 -7 +- 48 -13 +- 32 3 7810 22 Jan 05 14:43 LAG1 22 0 19 -12 +- 39 6 +- 20 4 7810 22 Jan 05 18:31 LAG1 14 0 9 -7 +- 48 3 +- 51 4 7810 23 Jan 05 17:01 LAG1 22 0 11 0 +- 39 -6 +- 25 5 7810 24 Jan 05 15:53 LAG1 6 0 7 3 +- 85 -12 +- 128 2 7810 27 Jan 05 08:15 LAG1 16 0 8 2 +- 45 -5 +- 29 2 7810 27 Jan 05 10:55 LAG2 3 0 6 -6 +- 382 7 +- 212 1 7810 27 Jan 05 11:47 LAG1 7 0 1 1 +- 70 1 +- 109 0 7810 27 Jan 05 18:55 LAG1 10 0 22 -23 +- 63 11 +- 121 2 7810 28 Jan 05 12:43 LAG2 8 0 16 16 +- 70 2 +- 119 2 7810 28 Jan 05 13:43 LAG1 15 0 12 12 +- 50 1 +- 33 4 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 21 Jan 05 16:17 LAG1 16 0 19 18 +- 45 2 +- 36 7 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 21 Jan 05 19:49 LAG1 8 0 50 54 +- 72 5 +- 89 1 7824 22 Jan 05 03:43 LAG2 7 0 60 71 +- 74 18 +- 92 2 7824 22 Jan 05 04:31 LAG1 8 0 57 75 +- 92 12 +- 53 7 7824 22 Jan 05 18:23 LAG1 6 0 50 57 +- 86 7 +- 67 2 7824 27 Jan 05 18:43 LAG1 2 0 24 611 +-5099 499 +-4322 0 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 21 Jan 05 07:13 LAG2 15 0 14 21 +- 22 6 +- 13 5 7825 21 Jan 05 08:11 LAG1 12 0 5 -10 +- 34 5 +- 16 3 7825 21 Jan 05 11:19 LAG1 14 0 12 0 +- 11 -10 +- 10 3 7825 21 Jan 05 11:45 LAG2 15 0 3 1 +- 13 0 +- 9 3 7825 22 Jan 05 05:23 LAG2 6 1 6 46 +- 178 25 +- 97 3 7825 22 Jan 05 06:31 LAG1 15 0 7 0 +- 10 0 +- 9 7 7825 23 Jan 05 11:42 LAG2 2 0 5 276 +-2023 125 +- 933 0 7825 24 Jan 05 05:33 LAG2 15 0 15 16 +- 13 5 +- 9 7 7825 24 Jan 05 07:29 LAG1 12 0 6 0 +- 20 3 +- 10 1 7825 24 Jan 05 09:41 LAG2 27 0 19 14 +- 8 -6 +- 5 6 7825 24 Jan 05 10:47 LAG1 15 0 6 0 +- 10 -3 +- 8 4 7825 24 Jan 05 14:08 LAG2 1 0 15 0 +- 0 0 +- 0 0 7825 24 Jan 05 17:31 LAG1 10 0 21 0 +- 13 -12 +- 9 12 7825 24 Jan 05 18:16 LAG2 7 0 18 11 +- 22 15 +- 44 2 7825 25 Jan 05 08:11 LAG2 13 0 6 15 +- 29 -7 +- 18 3 7825 25 Jan 05 09:21 LAG1 22 0 4 2 +- 8 0 +- 4 3 7825 25 Jan 05 12:01 LAG2 21 0 5 2 +- 9 1 +- 6 4 7825 25 Jan 05 12:53 LAG1 7 0 4 2 +- 15 -1 +- 14 3 7825 25 Jan 05 16:05 LAG1 14 0 11 -10 +- 11 2 +- 6 2 7825 25 Jan 05 16:13 LAG2 13 0 16 -16 +- 11 2 +- 7 3 7825 25 Jan 05 19:44 LAG1 12 1 14 -11 +- 17 1 +- 10 10 7825 26 Jan 05 06:05 LAG2 11 0 5 1 +- 13 -2 +- 15 4 7825 26 Jan 05 08:07 LAG1 21 0 21 -20 +- 9 0 +- 5 5 7825 27 Jan 05 03:57 LAG2 15 1 9 6 +- 11 4 +- 8 4 7825 27 Jan 05 06:37 LAG1 19 0 8 -4 +- 9 -1 +- 5 5 7825 27 Jan 05 08:35 LAG2 9 0 8 2 +- 85 -6 +- 45 1 7825 27 Jan 05 10:17 LAG1 13 0 10 -7 +- 11 -4 +- 10 4 7825 27 Jan 05 12:11 LAG2 13 0 6 -6 +- 21 -1 +- 12 3 7825 27 Jan 05 13:37 LAG1 9 0 9 2 +- 15 -9 +- 14 2 7825 27 Jan 05 16:19 LAG2 14 0 14 -5 +- 14 6 +- 10 4 7825 28 Jan 05 05:19 LAG1 18 0 5 -2 +- 9 -3 +- 8 3 7825 28 Jan 05 06:21 LAG2 3 0 8 12 +- 78 10 +- 160 0 7825 28 Jan 05 08:49 LAG1 20 0 7 7 +- 9 0 +- 5 1 7825 28 Jan 05 10:21 LAG2 17 0 10 -2 +- 10 -9 +- 9 2 7825 28 Jan 05 14:23 LAG2 20 0 6 -2 +- 9 2 +- 5 4 7825 28 Jan 05 15:33 LAG1 20 0 5 0 +- 9 2 +- 5 3 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 23 Jan 05 11:01 LAG2 4 0 12 41 +- 623 -13 +- 291 1 7832 23 Jan 05 13:17 LAG1 13 0 6 -3 +- 21 3 +- 12 3 7832 28 Jan 05 22:37 LAG2 11 0 5 0 +- 23 2 +- 24 5 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 27 Jan 05 02:21 LAG2 6 0 3 5 +- 129 2 +- 102 0 7835 27 Jan 05 05:05 LAG1 4 0 7 22 +- 154 -13 +- 110 2 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 21 Jan 05 05:03 LAG1 16 0 16 15 +- 24 -4 +- 17 2 7838 21 Jan 05 08:29 LAG1 21 0 14 13 +- 20 2 +- 13 3 7838 22 Jan 05 07:03 LAG1 22 0 20 19 +- 20 2 +- 10 7 7838 23 Jan 05 16:45 LAG2 8 0 51 39 +- 45 17 +- 50 5 7838 23 Jan 05 18:27 LAG1 8 0 25 26 +- 37 -7 +- 63 5 7838 24 Jan 05 18:35 LAG2 24 0 36 35 +- 19 0 +- 11 8 7838 25 Jan 05 03:06 LAG2 14 0 30 28 +- 25 8 +- 25 3 7838 26 Jan 05 18:47 LAG2 17 0 44 47 +- 26 10 +- 16 11 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 21 Jan 05 13:50 LAG2 10 0 4 1 +- 14 -3 +- 13 1 7839 22 Jan 05 00:05 LAG2 9 0 12 -11 +- 15 0 +- 21 4 7839 22 Jan 05 18:29 LAG1 14 0 10 -1 +- 11 -10 +- 12 3 7839 23 Jan 05 17:05 LAG1 18 0 11 4 +- 10 -8 +- 7 3 7839 24 Jan 05 00:13 LAG2 6 0 11 -2 +- 40 -20 +- 59 1 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 22 Jan 05 04:23 LAG1 19 0 18 15 +- 15 -4 +- 10 5 7840 22 Jan 05 07:43 LAG2 10 0 7 4 +- 34 7 +- 25 2 7840 22 Jan 05 08:06 LAG1 11 0 11 10 +- 19 2 +- 17 1 7840 22 Jan 05 11:39 LAG1 5 0 22 23 +- 31 9 +- 64 2 7840 23 Jan 05 06:03 LAG2 11 0 15 -4 +- 25 11 +- 17 1 7840 23 Jan 05 06:35 LAG1 20 0 4 0 +- 14 1 +- 8 3 7840 23 Jan 05 09:57 LAG2 8 0 4 2 +- 23 1 +- 13 2 7840 23 Jan 05 10:09 LAG1 13 0 11 3 +- 18 6 +- 11 1 7840 23 Jan 05 13:47 LAG1 6 0 8 -2 +- 32 8 +- 29 3 7840 23 Jan 05 17:05 LAG1 17 0 7 4 +- 16 -3 +- 10 3 7840 24 Jan 05 08:23 LAG2 9 0 6 -3 +- 77 -1 +- 45 2 7840 24 Jan 05 08:59 LAG1 13 0 10 -7 +- 24 -2 +- 16 3 7840 24 Jan 05 15:43 LAG1 4 0 33 44 +- 329 5 +- 155 3 7840 25 Jan 05 14:35 LAG1 7 0 13 10 +- 33 3 +- 36 2 7840 26 Jan 05 08:42 LAG2 2 0 20 61 +- 694 -52 +- 449 0 7840 26 Jan 05 09:49 LAG1 3 0 17 16 +- 38 -6 +- 143 0 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 21 Jan 05 12:49 LAG1 2 0 2 16 +- 211 22 +- 282 0 7941 21 Jan 05 13:52 LAG2 5 0 3 2 +- 109 3 +- 78 1 7941 21 Jan 05 16:17 LAG1 10 0 6 0 +- 16 -1 +- 8 5 7941 23 Jan 05 07:03 LAG1 7 0 5 -11 +- 79 3 +- 37 1 7941 23 Jan 05 10:29 LAG2 3 0 15 46 +- 159 -32 +- 159 2 7941 23 Jan 05 13:23 LAG1 6 0 12 20 +- 103 15 +- 49 1 7941 27 Jan 05 10:41 LAG2 4 0 11 15 +- 83 3 +- 76 2 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 23 Jan 05 17:25 LAG1 6 0 15 -20 +- 60 4 +- 45 4 8834 27 Jan 05 08:17 LAG1 12 0 14 -10 +- 12 -4 +- 8 2 8834 27 Jan 05 10:21 LAG2 10 0 11 -10 +- 14 0 +- 8 4 8834 27 Jan 05 11:45 LAG1 5 0 14 -13 +- 28 -2 +- 41 7 8834 28 Jan 05 04:51 LAG2 5 0 13 -39 +- 80 29 +- 50 4 8834 28 Jan 05 08:39 LAG2 6 0 16 -16 +- 46 0 +- 42 1 -------------------------------------------------------------------------------- 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 - 050123 0/ 17/ 0 0/ 20/ 0 37 1831 LVIL 040815 - 050118 0/ 23/ 0 0/ 25/ 0 48 1864 MD2LAS 040701 - 050117 0/ 87/ 0 0/ 75/ 0 162 1873 SIMLAS 040703 - 040813 0/ 25/ 0 0/ 15/ 0 40 1884 RIGLAS 040712 - 050119 0/ 43/ 1 0/ 18/ 2 64 1893 CRMLAS 040705 - 041012 0/ 45/ 0 0/ 35/ 0 80 6405 TIGO 040710 - 050127 9/ 7/ 0 6/ 10/ 1 33 6810 ZIMLAT 040805 - 050130 173/105/ 18 101/ 98/ 18 513 7080 MLRS25 040701 - 050129 43/ 53/ 2 45/ 63/ 4 210 7090 ML0514 040716 - 050129 112/302/ 26 104/201/ 24 769 7105 ML0725 040701 - 050129 0/ 74/ 4 2/ 81/ 7 168 7110 ML0414 040701 - 050128 65/113/ 14 66/111/ 17 386 7124 ML0819 040705 - 050126 0/ 31/ 0 0/ 14/ 0 45 7231 WUHA01 040701 - 041208 0/ 8/ 0 0/ 20/ 0 28 7237 CHALAS 040702 - 050129 0/131/ 0 0/140/ 1 272 7249 BEJLAS 040701 - 050128 0/ 84/ 0 0/ 96/ 0 180 7308 CRLLAS 041201 - 050111 2/ 7/ 1 2/ 6/ 0 18 7355 TROS02 040702 - 040829 0/ 37/ 0 0/ 29/ 0 66 7405 TIGO 040710 - 050128 3/ 22/ 0 3/ 8/ 0 36 7501 ML0616 040701 - 050128 17/ 21/ 2 56/ 63/ 6 165 7604 BREF 041017 - 041021 0/ 1/ 0 0/ 2/ 0 3 7806 METLAS 040720 - 041203 0/ 16/ 0 0/ 10/ 0 26 7810 ZIMLAT 040701 - 050130 227/131/ 24 126/118/ 21 647 7811 POLLAS 040706 - 050121 0/ 50/ 0 0/ 59/ 0 109 7824 SPNLAS 040701 - 050129 0/ 87/ 0 0/ 80/ 0 167 7825 STL3 040807 - 050129 104/146/ 27 107/109/ 20 513 7832 SALRO 040702 - 050130 120/193/ 15 163/221/ 23 735 7835 GRASSE 040702 - 050127 0/ 41/ 1 0/ 28/ 1 71 7836 GFZLAS 040701 - 040701 0/ 1/ 0 0/ 0/ 0 1 7837 CHILAS 040704 - 050111 0/ 85/ 0 0/114/ 1 200 7838 SHOLAS 040701 - 050126 45/112/ 3 74/125/ 7 366 7839 AUSLAS 040701 - 050124 148/152/ 28 76/135/ 21 560 7840 RGOLAS 040701 - 050126 105/ 91/ 23 69/ 75/ 12 375 7841 GFZLA3 040702 - 050117 28/ 56/ 13 19/ 57/ 7 180 7845 GRASLL 040705 - 040920 11/ 14/ 0 3/ 12/ 1 41 7941 MLROnn 040701 - 050129 80/ 58/ 9 71/ 46/ 5 269 8834 WLRS01 040701 - 050129 183/121/ 22 107/126/ 16 575 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050122.0 117.3 +/- 0.1 213.4 +/- 0.1 -32574.06 +/- 0.02 050123.0 115.1 +/- 0.1 212.5 +/- 0.1 -32574.16 +/- 0.02 050124.0 111.5 +/- 0.1 212.1 +/- 0.1 -32574.29 +/- 0.03 050125.0 109.6 +/- 0.2 211.3 +/- 0.2 -32574.36 +/- 0.04 050126.0 108.6 +/- 0.1 209.3 +/- 0.1 -32574.43 +/- 0.04 050127.0 105.6 +/- 0.1 209.1 +/- 0.1 -32574.78 +/- 0.05 050128.0 104.0 +/- 0.2 208.8 +/- 0.1 -32575.31 +/- 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 ******************************************************************************** |