| Date: | 2005-02-01 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 4884: Delft QL Report February 01, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-02-01 13:15:00 UTC Message No. 4884 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report February 01, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS February 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 Tue, Feb 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 Tue, Feb 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 ------------------------------------------------------------------------------ 6405 Concepcion, Chile (TIGO 847) 050130 - 050201 2 2 7249 Beijing, China 050131 - 050131 1 2 7405 Concepcion, Chile (TIGO 424) 050131 - 050201 2 - 7824 San Fernando, Spain 050131 - 050201 2 3 7825 Mount Stromlo, Australia 050130 - 050131 4 4 7832 Riyad, Saudi Arabia 050130 - 050201 3 4 7839 Graz, Austria 050131 - 050131 2 - 7840 Herstmonceux, United Kingdom 050131 - 050131 - 1 7941 Matera, Italy (MLRO 532) 050131 - 050201 1 1 ------ ------ --- --- TOTAL 050130 - 050201 17 17 ------------------------------------------------------------------------------ B. ANALYSIS RESULTS The analysis is based on two orbit solutions using global quick-look normal points that cover a period of 8 days which are computed simultaneously. This week´s data interval runs from Mon, Jan 24, 2005 to Tue, Feb 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 19 21 Number of Passes 111/111 108/108 Number of Normal Points 1220/1202 1134/1115 Weighted RMS of Fit (mm) 11 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 6405 (Concepcion) (position solved, acc. 20 mm) 6405 25 Jan 05 04:47 LAG2 16 0 11 -7 +- 16 3 +- 7 3 6405 25 Jan 05 21:11 LAG1 9 0 7 -12 +- 40 7 +- 34 3 6405 25 Jan 05 22:47 LAG2 6 0 14 4 +- 72 16 +- 71 5 6405 26 Jan 05 00:23 LAG1 7 0 6 0 +- 30 1 +- 14 6 6405 26 Jan 05 03:25 LAG2 6 0 5 -2 +- 181 -1 +- 104 2 6405 26 Jan 05 03:51 LAG1 8 0 9 -9 +- 40 -15 +- 40 2 6405 26 Jan 05 06:57 LAG2 7 0 20 -43 +- 129 -34 +- 74 7 6405 27 Jan 05 21:51 LAG1 4 0 15 2 +- 99 16 +- 94 4 6405 27 Jan 05 23:05 LAG2 12 0 22 -22 +- 20 1 +- 16 4 6405 30 Jan 05 07:25 LAG2 11 0 9 -2 +- 33 -9 +- 31 3 6405 30 Jan 05 08:43 LAG1 13 0 23 20 +- 18 -2 +- 9 7 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 24 Jan 05 15:53 LAG1 5 0 15 -8 +- 92 -14 +- 135 2 6810 27 Jan 05 08:15 LAG1 15 0 8 -5 +- 47 -2 +- 31 3 6810 27 Jan 05 10:55 LAG2 6 0 9 6 +- 340 -7 +- 173 3 6810 27 Jan 05 11:47 LAG1 6 0 9 -8 +- 85 -3 +- 136 4 6810 27 Jan 05 18:55 LAG1 11 0 31 -31 +- 63 1 +- 106 3 6810 28 Jan 05 12:43 LAG2 9 0 18 9 +- 61 -16 +- 63 3 6810 28 Jan 05 13:44 LAG1 12 0 15 0 +- 62 10 +- 46 2 6810 29 Jan 05 07:09 LAG2 6 0 27 52 +-1081 -10 +- 478 3 6810 29 Jan 05 10:50 LAG2 13 0 3 3 +- 56 0 +- 45 2 6810 29 Jan 05 12:21 LAG1 19 0 12 -11 +- 41 -2 +- 23 3 6810 29 Jan 05 14:50 LAG2 4 0 5 3 +- 91 -20 +- 448 3 6810 29 Jan 05 15:47 LAG1 18 0 7 0 +- 50 4 +- 30 2 6810 30 Jan 05 00:43 LAG2 8 0 5 3 +- 171 0 +- 153 4 6810 30 Jan 05 03:59 LAG1 11 0 14 36 +- 159 14 +- 83 4 6810 30 Jan 05 04:31 LAG2 14 0 11 0 +- 63 6 +- 37 4 6810 30 Jan 05 07:37 LAG1 20 0 8 0 +- 40 3 +- 22 4 6810 30 Jan 05 08:47 LAG2 22 0 9 -3 +- 40 -4 +- 26 4 6810 30 Jan 05 11:02 LAG1 19 0 9 -1 +- 42 5 +- 26 3 6810 30 Jan 05 12:41 LAG2 16 0 8 8 +- 64 0 +- 48 2 6810 30 Jan 05 14:24 LAG1 23 0 17 -11 +- 38 5 +- 19 5 6810 30 Jan 05 18:09 LAG1 17 0 15 -14 +- 44 6 +- 46 2 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 25 Jan 05 11:43 LAG1 7 0 7 8 +- 26 3 +- 38 1 7080 28 Jan 05 21:11 LAG1 10 0 21 16 +- 20 9 +- 14 4 7080 29 Jan 05 00:51 LAG1 13 0 18 -18 +- 27 0 +- 20 2 7080 30 Jan 05 08:25 LAG2 6 0 23 13 +- 185 -21 +- 109 3 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 24 Jan 05 11:23 LAG1 6 0 10 5 +- 78 -8 +- 43 1 7090 24 Jan 05 13:43 LAG2 22 0 4 0 +- 9 3 +- 7 0 7090 24 Jan 05 14:33 LAG1 7 0 6 2 +- 16 -12 +- 34 2 7090 24 Jan 05 17:45 LAG1 13 0 5 1 +- 12 -5 +- 11 1 7090 24 Jan 05 18:09 LAG2 18 0 4 1 +- 14 -2 +- 8 2 7090 24 Jan 05 21:09 LAG1 9 0 2 1 +- 16 -1 +- 8 0 7090 25 Jan 05 09:49 LAG1 5 0 19 -20 +- 21 -3 +- 29 2 7090 25 Jan 05 11:49 LAG2 21 0 12 0 +- 10 -9 +- 9 6 7090 25 Jan 05 13:15 LAG1 13 0 7 1 +- 14 -6 +- 12 3 7090 25 Jan 05 15:57 LAG2 17 0 13 -4 +- 13 7 +- 9 1 7090 25 Jan 05 16:39 LAG1 6 0 3 2 +- 42 -2 +- 46 3 7090 25 Jan 05 19:39 LAG1 18 0 22 -5 +- 10 11 +- 6 2 7090 25 Jan 05 20:15 LAG2 11 0 11 14 +- 16 -13 +- 21 2 7090 26 Jan 05 08:37 LAG1 7 0 35 -40 +- 49 4 +- 35 7 7090 26 Jan 05 10:01 LAG2 5 0 5 5 +- 30 -16 +- 63 2 7090 26 Jan 05 11:45 LAG1 19 0 9 7 +- 9 2 +- 5 2 7090 26 Jan 05 13:53 LAG2 20 0 8 -5 +- 9 -3 +- 5 1 7090 26 Jan 05 15:17 LAG1 4 0 4 -6 +- 31 -14 +- 105 0 7090 26 Jan 05 18:07 LAG2 4 0 7 -33 +- 378 -12 +- 174 0 7090 27 Jan 05 10:33 LAG1 8 0 14 -13 +- 15 -2 +- 9 2 7090 27 Jan 05 11:53 LAG2 17 0 7 -1 +- 14 0 +- 13 7 7090 27 Jan 05 13:53 LAG1 4 0 3 1 +- 129 -1 +- 104 0 7090 27 Jan 05 16:21 LAG2 21 0 8 -3 +- 10 5 +- 6 1 7090 27 Jan 05 17:15 LAG1 12 0 5 6 +- 14 -3 +- 12 2 7090 27 Jan 05 20:27 LAG2 5 0 4 1 +- 23 -8 +- 79 1 7090 27 Jan 05 20:37 LAG1 18 0 10 -11 +- 11 3 +- 6 2 7090 28 Jan 05 10:13 LAG2 2 0 8 22 +- 87 60 +- 285 0 7090 28 Jan 05 12:33 LAG1 3 0 34 -227 +- 302 -106 +- 162 8 7090 28 Jan 05 14:13 LAG2 9 0 10 -17 +- 26 -13 +- 19 1 7090 28 Jan 05 18:15 LAG2 16 0 6 -1 +- 11 -2 +- 5 2 7090 29 Jan 05 08:23 LAG2 10 0 4 6 +- 39 -2 +- 25 2 7090 29 Jan 05 11:15 LAG1 21 0 3 2 +- 9 0 +- 5 1 7090 29 Jan 05 12:09 LAG2 28 0 7 -5 +- 7 -1 +- 6 3 7090 29 Jan 05 14:47 LAG1 7 0 3 -1 +- 19 -4 +- 34 1 7090 29 Jan 05 16:25 LAG2 17 0 9 -4 +- 10 3 +- 4 2 7090 29 Jan 05 17:51 LAG1 19 0 6 4 +- 9 1 +- 6 1 7090 29 Jan 05 21:11 LAG1 25 0 5 -4 +- 8 1 +- 4 2 7090 30 Jan 05 09:53 LAG1 14 0 7 -2 +- 11 -3 +- 6 3 7090 30 Jan 05 10:27 LAG2 13 0 10 12 +- 16 -11 +- 15 3 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 24 Jan 05 07:25 LAG2 10 0 5 10 +- 30 6 +- 21 2 7105 24 Jan 05 09:25 LAG1 2 0 7 7 +- 93 1 +- 268 0 7105 24 Jan 05 11:31 LAG2 5 0 6 -11 +- 57 -4 +- 41 2 7105 27 Jan 05 08:41 LAG1 9 0 16 13 +- 18 -4 +- 23 1 7105 27 Jan 05 10:11 LAG2 8 0 7 2 +- 52 -6 +- 31 1 7105 28 Jan 05 07:19 LAG1 3 0 9 15 +- 133 44 +- 266 6 7105 28 Jan 05 08:01 LAG2 18 0 13 -5 +- 11 -7 +- 7 1 7105 29 Jan 05 06:11 LAG2 12 0 12 2 +- 12 16 +- 16 2 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 28 Jan 05 11:09 LAG1 2 0 2 -3 +- 457 -7 +- 555 0 7110 28 Jan 05 11:45 LAG2 10 0 40 -10 +- 16 -15 +- 7 5 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 24 Jan 05 10:35 LAG2 3 0 5 19 +- 300 8 +- 174 1 7124 26 Jan 05 10:55 LAG2 6 0 30 10 +- 32 -24 +- 38 1 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 26 Jan 05 19:13 LAG2 3 0 11 -14 +- 202 5 +- 414 1 7237 26 Jan 05 21:18 LAG1 13 0 11 -6 +- 43 -3 +- 33 7 7237 29 Jan 05 17:34 LAG2 2 0 28 -33 +- 241 26 +- 996 0 7237 29 Jan 05 20:38 LAG1 10 0 20 3 +- 49 -13 +- 37 9 7237 29 Jan 05 21:55 LAG2 1 0 9 0 +- 0 0 +- 0 0 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 28 Jan 05 19:15 LAG2 2 0 5 -17 +- 701 -20 +-1110 0 7249 31 Jan 05 17:29 LAG2 13 0 8 7 +- 43 2 +- 50 3 7249 31 Jan 05 21:29 LAG2 12 0 18 0 +- 45 -18 +- 46 4 7249 31 Jan 05 21:51 LAG1 6 0 18 -7 +- 210 -5 +- 134 8 Station 7405 (Concepcion) (position solved, acc. 20 mm) 7405 25 Jan 05 01:55 LAG1 2 0 6 -29 +- 345 -37 +- 381 0 7405 26 Jan 05 00:31 LAG1 7 0 6 -7 +- 35 -3 +- 31 2 7405 26 Jan 05 03:55 LAG1 3 0 29 14 +- 77 -17 +- 86 0 7405 26 Jan 05 07:23 LAG1 7 0 15 18 +- 40 -2 +- 36 1 7405 27 Jan 05 06:05 LAG1 3 0 24 24 +- 40 -8 +- 169 2 7405 27 Jan 05 23:36 LAG2 1 0 15 0 +- 0 0 +- 0 0 7405 28 Jan 05 01:24 LAG1 4 0 9 -10 +- 37 -8 +- 91 0 7405 31 Jan 05 23:33 LAG1 4 0 6 5 +- 33 -9 +- 88 2 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 25 Jan 05 15:29 LAG2 8 0 8 -20 +- 47 16 +- 35 4 7501 25 Jan 05 19:35 LAG2 15 0 10 4 +- 11 7 +- 11 3 7501 26 Jan 05 03:31 LAG1 4 0 25 48 +- 170 -12 +- 91 1 7501 26 Jan 05 15:47 LAG1 12 0 17 10 +- 12 9 +- 8 2 7501 28 Jan 05 17:45 LAG2 17 0 11 3 +- 10 11 +- 12 2 7501 29 Jan 05 18:41 LAG1 5 0 9 -13 +- 60 -7 +- 60 6 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 24 Jan 05 15:53 LAG1 6 0 7 4 +- 85 -12 +- 128 2 7810 27 Jan 05 08:15 LAG1 16 0 7 2 +- 45 -4 +- 29 2 7810 27 Jan 05 10:55 LAG2 3 0 3 -10 +- 382 5 +- 212 1 7810 27 Jan 05 11:47 LAG1 7 0 1 0 +- 70 0 +- 109 0 7810 27 Jan 05 18:55 LAG1 10 0 22 -23 +- 63 3 +- 121 2 7810 28 Jan 05 12:43 LAG2 8 0 24 21 +- 70 -8 +- 119 2 7810 28 Jan 05 13:43 LAG1 15 0 14 1 +- 50 9 +- 33 3 7810 29 Jan 05 07:10 LAG2 4 0 33 76 +-1784 -18 +- 788 1 7810 29 Jan 05 10:53 LAG2 11 0 8 6 +- 64 1 +- 55 4 7810 29 Jan 05 12:23 LAG1 18 0 9 -7 +- 43 -1 +- 25 4 7810 29 Jan 05 14:53 LAG2 2 0 17 13 +- 159 64 +-2026 0 7810 29 Jan 05 15:48 LAG1 18 0 6 2 +- 46 4 +- 29 2 7810 30 Jan 05 00:51 LAG2 2 0 2 0 +-2159 2 +-2506 0 7810 30 Jan 05 03:59 LAG1 11 0 14 27 +- 157 7 +- 82 3 7810 30 Jan 05 04:59 LAG2 4 0 8 0 +- 184 6 +- 125 0 7810 30 Jan 05 07:39 LAG1 20 0 7 3 +- 41 3 +- 23 2 7810 30 Jan 05 08:47 LAG2 20 0 7 0 +- 42 -4 +- 28 3 7810 30 Jan 05 11:02 LAG1 19 0 10 1 +- 42 5 +- 26 4 7810 30 Jan 05 12:43 LAG2 15 0 17 16 +- 64 -1 +- 51 3 7810 30 Jan 05 14:24 LAG1 24 0 15 -9 +- 37 5 +- 18 3 7810 30 Jan 05 18:09 LAG1 16 0 10 -8 +- 45 5 +- 50 2 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 27 Jan 05 18:43 LAG1 2 0 32 617 +-5099 496 +-4322 0 7824 29 Jan 05 02:33 LAG2 5 0 38 47 +- 97 17 +- 145 3 7824 31 Jan 05 02:51 LAG2 2 0 72 80 +- 407 29 +-1468 0 7824 31 Jan 05 03:01 LAG1 3 0 35 87 +- 389 99 +- 711 0 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 24 Jan 05 05:33 LAG2 15 0 17 20 +- 13 9 +- 9 8 7825 24 Jan 05 07:29 LAG1 12 0 12 5 +- 20 3 +- 10 2 7825 24 Jan 05 09:41 LAG2 27 0 14 11 +- 8 -3 +- 5 6 7825 24 Jan 05 10:47 LAG1 15 0 4 1 +- 10 0 +- 8 4 7825 24 Jan 05 14:08 LAG2 1 0 10 0 +- 0 0 +- 0 0 7825 24 Jan 05 17:31 LAG1 10 0 18 3 +- 13 -9 +- 9 11 7825 24 Jan 05 18:16 LAG2 7 0 18 10 +- 22 18 +- 44 2 7825 25 Jan 05 08:11 LAG2 13 0 4 9 +- 29 -5 +- 18 2 7825 25 Jan 05 09:21 LAG1 22 0 3 2 +- 8 0 +- 4 2 7825 25 Jan 05 12:01 LAG2 21 0 7 3 +- 9 3 +- 6 5 7825 25 Jan 05 12:53 LAG1 7 0 6 4 +- 15 -1 +- 14 3 7825 25 Jan 05 16:05 LAG1 14 0 9 -8 +- 11 1 +- 6 2 7825 25 Jan 05 16:13 LAG2 13 0 16 -16 +- 11 4 +- 7 3 7825 25 Jan 05 19:44 LAG1 12 1 10 -3 +- 17 0 +- 10 9 7825 26 Jan 05 06:05 LAG2 11 0 5 0 +- 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 14 0 7 4 +- 11 3 +- 8 4 7825 27 Jan 05 06:37 LAG1 19 0 8 -5 +- 9 -1 +- 5 5 7825 27 Jan 05 08:35 LAG2 9 0 6 6 +- 85 -6 +- 45 1 7825 27 Jan 05 10:17 LAG1 13 0 8 -5 +- 11 -4 +- 10 4 7825 27 Jan 05 12:11 LAG2 13 0 4 2 +- 21 2 +- 12 3 7825 27 Jan 05 13:37 LAG1 9 0 11 1 +- 15 -11 +- 14 2 7825 27 Jan 05 16:19 LAG2 14 0 13 -2 +- 14 7 +- 10 4 7825 28 Jan 05 05:19 LAG1 18 0 3 1 +- 9 -1 +- 8 2 7825 28 Jan 05 06:21 LAG2 3 0 11 15 +- 78 9 +- 160 0 7825 28 Jan 05 08:49 LAG1 20 0 5 4 +- 9 1 +- 5 1 7825 28 Jan 05 10:21 LAG2 17 0 11 5 +- 10 -8 +- 9 2 7825 28 Jan 05 14:23 LAG2 20 0 6 5 +- 9 -1 +- 5 2 7825 28 Jan 05 15:33 LAG1 20 0 12 -9 +- 9 4 +- 5 3 7825 29 Jan 05 17:05 LAG2 5 0 7 2 +- 130 3 +- 85 0 7825 29 Jan 05 17:37 LAG1 10 0 8 -9 +- 38 -7 +- 18 2 7825 30 Jan 05 10:49 LAG2 5 0 21 17 +- 24 -12 +- 63 1 7825 31 Jan 05 08:15 LAG1 9 0 19 17 +- 14 -1 +- 5 3 7825 31 Jan 05 08:43 LAG2 13 0 6 2 +- 15 1 +- 10 4 7825 31 Jan 05 11:47 LAG1 15 0 10 -3 +- 10 6 +- 9 7 7825 31 Jan 05 12:41 LAG2 17 0 4 -3 +- 10 1 +- 6 1 7825 31 Jan 05 15:01 LAG1 19 0 4 -3 +- 9 0 +- 6 2 7825 31 Jan 05 16:51 LAG2 17 0 4 0 +- 10 -3 +- 10 2 7825 31 Jan 05 18:25 LAG1 24 0 8 -7 +- 8 0 +- 4 3 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 28 Jan 05 22:37 LAG2 11 0 15 -16 +- 23 -9 +- 24 5 7832 29 Jan 05 01:55 LAG1 10 0 23 13 +- 35 1 +- 19 19 7832 29 Jan 05 02:41 LAG2 7 0 18 -4 +- 59 15 +- 61 3 7832 29 Jan 05 07:13 LAG2 7 0 8 -1 +- 25 8 +- 50 7 7832 29 Jan 05 11:19 LAG2 11 0 5 0 +- 26 -1 +- 29 5 7832 29 Jan 05 15:43 LAG1 9 0 7 -3 +- 25 6 +- 27 4 7832 30 Jan 05 00:35 LAG2 7 2 79 204 +- 216 60 +- 98 23 7832 30 Jan 05 00:53 LAG1 9 0 70 54 +- 40 9 +- 23 13 7832 30 Jan 05 04:17 LAG1 11 0 7 7 +- 20 -2 +- 19 3 7832 30 Jan 05 05:15 LAG2 10 0 10 -8 +- 44 17 +- 48 2 7832 30 Jan 05 09:19 LAG2 14 0 14 -9 +- 17 -6 +- 17 6 7832 30 Jan 05 14:41 LAG1 6 0 20 -44 +- 297 27 +- 128 3 7832 30 Jan 05 22:45 LAG2 8 0 6 -13 +- 84 -10 +- 51 3 7832 31 Jan 05 02:55 LAG1 6 0 5 7 +- 53 6 +- 46 3 7832 31 Jan 05 11:19 LAG2 11 0 7 -2 +- 32 -7 +- 31 3 7832 31 Jan 05 12:53 LAG1 13 0 12 -11 +- 18 0 +- 14 3 7832 31 Jan 05 21:01 LAG2 11 0 9 9 +- 20 -2 +- 32 2 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 27 Jan 05 02:21 LAG2 6 0 14 11 +- 129 -2 +- 102 0 7835 27 Jan 05 05:05 LAG1 4 0 8 24 +- 154 -13 +- 110 2 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 24 Jan 05 18:35 LAG2 24 0 40 39 +- 19 -2 +- 11 10 7838 25 Jan 05 03:06 LAG2 14 0 34 34 +- 25 -1 +- 25 3 7838 26 Jan 05 18:47 LAG2 17 0 50 52 +- 26 6 +- 16 12 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 24 Jan 05 00:13 LAG2 6 0 3 -4 +- 40 -10 +- 59 1 7839 31 Jan 05 09:53 LAG1 8 0 1 0 +- 15 -1 +- 20 1 7839 31 Jan 05 13:09 LAG1 7 0 7 -4 +- 47 2 +- 28 0 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 24 Jan 05 08:23 LAG2 9 0 3 1 +- 77 0 +- 45 3 7840 24 Jan 05 08:59 LAG1 13 0 10 -13 +- 24 4 +- 16 2 7840 24 Jan 05 15:43 LAG1 4 0 33 44 +- 329 5 +- 155 3 7840 25 Jan 05 14:35 LAG1 7 0 14 10 +- 33 4 +- 36 2 7840 26 Jan 05 08:42 LAG2 2 0 20 67 +- 694 -56 +- 449 0 7840 26 Jan 05 09:49 LAG1 3 0 19 18 +- 38 -6 +- 143 0 7840 31 Jan 05 11:07 LAG2 11 0 11 15 +- 34 -4 +- 27 1 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 27 Jan 05 10:41 LAG2 4 0 5 1 +- 83 -3 +- 76 2 7941 29 Jan 05 01:57 LAG1 7 0 4 12 +- 50 10 +- 45 2 7941 29 Jan 05 02:45 LAG2 3 0 5 0 +- 45 12 +- 114 1 7941 31 Jan 05 13:29 LAG1 4 0 3 -8 +- 133 3 +- 76 1 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 27 Jan 05 08:17 LAG1 12 0 13 -10 +- 12 -3 +- 8 2 8834 27 Jan 05 10:21 LAG2 10 0 10 -10 +- 14 -3 +- 8 4 8834 27 Jan 05 11:45 LAG1 5 0 15 -15 +- 28 -3 +- 41 7 8834 28 Jan 05 04:51 LAG2 5 0 10 -36 +- 80 19 +- 50 4 8834 28 Jan 05 08:39 LAG2 6 0 13 -19 +- 46 -7 +- 42 1 8834 29 Jan 05 01:53 LAG1 9 0 27 -20 +- 20 13 +- 29 4 8834 29 Jan 05 03:05 LAG2 4 0 14 -2 +- 285 8 +- 146 5 8834 29 Jan 05 05:25 LAG1 18 0 14 -3 +- 10 -5 +- 5 9 8834 29 Jan 05 06:29 LAG2 21 0 25 -6 +- 9 13 +- 5 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 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 - 050201 9/ 9/ 0 6/ 12/ 1 37 6810 ZIMLAT 040805 - 050130 175/106/ 18 102/ 98/ 18 517 7080 MLRS25 040701 - 050130 43/ 53/ 2 45/ 64/ 4 211 7090 ML0514 040716 - 050130 113/304/ 28 105/203/ 24 777 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 - 050131 0/ 85/ 0 0/ 98/ 0 183 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 - 050201 4/ 23/ 0 3/ 8/ 0 38 7501 ML0616 040701 - 050129 17/ 22/ 2 56/ 63/ 6 166 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 229/132/ 24 127/118/ 21 651 7811 POLLAS 040706 - 050121 0/ 50/ 0 0/ 59/ 0 109 7824 SPNLAS 040701 - 050201 0/ 89/ 0 0/ 83/ 0 172 7825 STL3 040807 - 050131 105/148/ 28 107/112/ 21 521 7832 SALRO 040702 - 050201 121/194/ 17 165/224/ 23 744 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 - 050131 150/152/ 28 76/135/ 21 562 7840 RGOLAS 040701 - 050131 105/ 91/ 23 70/ 75/ 12 376 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 - 050201 81/ 58/ 9 71/ 47/ 5 271 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) -------------------------------------------------------------- 050125.0 109.3 +/- 0.2 211.8 +/- 0.2 -32574.49 +/- 0.02 050126.0 108.3 +/- 0.1 209.8 +/- 0.1 -32574.57 +/- 0.02 050127.0 105.2 +/- 0.1 209.5 +/- 0.1 -32574.91 +/- 0.04 050128.0 103.5 +/- 0.2 209.4 +/- 0.2 -32575.44 +/- 0.04 050129.0 100.5 +/- 0.1 209.1 +/- 0.1 -32576.23 +/- 0.05 050130.0 97.6 +/- 0.1 209.2 +/- 0.1 -32577.02 +/- 0.05 050131.0 94.2 +/- 0.2 207.8 +/- 0.3 -32577.83 +/- 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 ******************************************************************************** |