| Date: | 2005-04-26 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5253: Delft QL Report April 26, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-04-26 13:15:00 UTC Message No. 5253 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report April 26, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS April 26, 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, Apr 26, 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, Apr 26, 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 ------------------------------------------------------------------------------ 1873 Simeiz, Crimea, Ukraine 050425 - 050426 1 3 7090 Yarragadee, Australia 050424 - 050424 2 1 7249 Beijing, China 050424 - 050425 1 3 7501 Hartebeesthoek, SA (MOB-6) 050425 - 050425 - 1 7824 San Fernando, Spain 050425 - 050426 1 2 7825 Mount Stromlo, Australia 050424 - 050425 5 3 7835 Grasse, France 050421 - 050426 1 2 7839 Graz, Austria 050421 - 050422 7 4 7841 Potsdam, Germany 050424 - 050426 2 2 ------ ------ --- --- TOTAL 050421 - 050426 20 21 ------------------------------------------------------------------------------ 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, Apr 18, 2005 to Tue, Apr 26, 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 23 23 Number of Passes 153/153 158/158 Number of Normal Points 1621/1607 1935/1924 Weighted RMS of Fit (mm) 14 14 ----------------------------------------------------------------------- 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 19 Apr 05 17:59 LAG2 8 0 30 -12 +- 212 -12 +- 169 23 1864 19 Apr 05 21:09 LAG1 10 0 18 12 +- 193 5 +- 132 12 1864 19 Apr 05 22:05 LAG2 11 0 37 -28 +- 187 8 +- 124 13 1864 21 Apr 05 18:12 LAG2 8 0 28 -13 +- 248 13 +- 214 11 1864 21 Apr 05 22:01 LAG1 13 0 19 5 +- 183 0 +- 104 18 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 23 Apr 05 23:14 LAG1 1 0 115 0 +- 0 0 +- 0 0 1873 25 Apr 05 00:31 LAG2 9 0 397 375 +- 208 -50 +- 226 72*CHK* 1873 25 Apr 05 18:20 LAG2 12 0 502 211 +- 369 -163 +- 230 204 1873 25 Apr 05 22:40 LAG2 16 0 468 446 +- 163 -40 +- 123 191*CHK* 1873 25 Apr 05 23:36 LAG1 11 0 599 485 +- 207 -80 +- 166 258*CHK* Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 19 Apr 05 17:55 LAG2 9 0 79 -71 +- 120 -11 +- 109 7 1884 19 Apr 05 21:53 LAG2 13 0 12 -12 +- 84 2 +- 77 3 1884 20 Apr 05 00:40 LAG1 17 0 14 -2 +- 72 8 +- 48 6 1884 22 Apr 05 20:03 LAG2 19 0 36 34 +- 69 9 +- 47 9 Station 6405 (Concepcion) (position solved, acc. 20 mm) 6405 20 Apr 05 18:29 LAG2 17 0 21 -8 +- 16 14 +- 12 5 6405 20 Apr 05 22:37 LAG2 8 0 9 9 +- 30 8 +- 45 5 6405 21 Apr 05 00:49 LAG1 10 0 7 3 +- 21 -7 +- 27 4 6405 21 Apr 05 16:29 LAG2 7 1 16 -60 +- 139 -45 +- 103 11 6405 22 Apr 05 18:43 LAG1 4 0 41 -10 +- 173 20 +- 115 2 6405 22 Apr 05 19:00 LAG2 11 0 13 -25 +- 38 13 +- 28 2 6405 22 Apr 05 22:38 LAG1 2 0 27 343 +-1961 -146 +- 905 0 6405 22 Apr 05 23:13 LAG2 4 0 41 -15 +- 317 39 +- 220 4 6405 23 Apr 05 01:25 LAG1 18 0 20 19 +- 15 -6 +- 11 3 6405 23 Apr 05 20:53 LAG1 8 0 22 14 +- 28 -7 +- 31 12 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 21 Apr 05 17:41 LAG2 18 0 9 -6 +- 45 -4 +- 23 3 6810 21 Apr 05 21:50 LAG2 13 0 13 -11 +- 50 3 +- 33 2 6810 22 Apr 05 01:33 LAG1 15 0 17 1 +- 49 -8 +- 28 7 6810 22 Apr 05 01:53 LAG2 19 0 21 -8 +- 43 -8 +- 21 6 6810 22 Apr 05 05:01 LAG1 21 0 8 -7 +- 40 0 +- 21 4 6810 22 Apr 05 06:09 LAG2 6 0 23 -23 +- 122 1 +- 276 2 6810 22 Apr 05 08:31 LAG1 15 0 25 -24 +- 48 -3 +- 27 2 6810 22 Apr 05 11:51 LAG1 18 0 23 -16 +- 45 -5 +- 19 6 6810 22 Apr 05 15:59 LAG2 19 0 10 -8 +- 42 4 +- 36 2 6810 22 Apr 05 19:54 LAG2 6 0 21 -1 +- 78 14 +- 56 6 6810 23 Apr 05 07:23 LAG1 13 0 17 -23 +- 71 15 +- 48 2 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 20 Apr 05 05:07 LAG2 14 0 19 -8 +- 18 -12 +- 16 4 7080 20 Apr 05 08:26 LAG1 6 0 4 15 +- 100 8 +- 54 1 7080 21 Apr 05 03:19 LAG2 7 0 12 -12 +- 47 4 +- 48 8 7080 21 Apr 05 07:39 LAG1 2 0 14 -42 +-1673 25 +- 751 0 7080 21 Apr 05 10:45 LAG1 15 0 7 7 +- 20 -1 +- 12 4 7080 21 Apr 05 11:28 LAG2 9 0 9 12 +- 34 14 +- 33 2 7080 22 Apr 05 05:27 LAG2 9 0 6 0 +- 22 -10 +- 40 1 7080 22 Apr 05 09:39 LAG1 4 0 3 8 +- 191 -6 +- 111 0 7080 22 Apr 05 10:05 LAG2 6 0 9 68 +- 327 -30 +- 140 7 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 18 Apr 05 11:27 LAG2 15 0 11 -11 +- 11 3 +- 14 1 7090 18 Apr 05 12:39 LAG1 7 0 9 -7 +- 15 11 +- 33 1 7090 18 Apr 05 15:41 LAG1 14 0 10 -5 +- 11 3 +- 5 4 7090 18 Apr 05 19:25 LAG1 14 0 6 2 +- 11 4 +- 9 2 7090 18 Apr 05 20:53 LAG2 24 0 9 -5 +- 8 6 +- 6 3 7090 19 Apr 05 08:01 LAG1 11 0 6 2 +- 12 0 +- 12 5 7090 19 Apr 05 09:35 LAG2 17 0 6 0 +- 11 4 +- 8 2 7090 19 Apr 05 11:37 LAG1 3 0 12 -2 +- 175 -9 +- 165 0 7090 19 Apr 05 14:25 LAG1 14 0 6 1 +- 11 -4 +- 8 1 7090 19 Apr 05 17:55 LAG1 21 0 5 -4 +- 9 1 +- 4 2 7090 19 Apr 05 22:59 LAG2 10 0 13 1 +- 13 -7 +- 8 5 7090 20 Apr 05 03:23 LAG2 13 0 10 1 +- 11 -12 +- 17 6 7090 20 Apr 05 06:35 LAG1 14 0 16 -15 +- 11 0 +- 8 2 7090 20 Apr 05 07:27 LAG2 27 0 9 -6 +- 8 -2 +- 4 4 7090 20 Apr 05 09:59 LAG1 15 0 5 -4 +- 10 0 +- 10 3 7090 20 Apr 05 11:43 LAG2 8 0 10 -8 +- 14 9 +- 31 3 7090 20 Apr 05 13:17 LAG1 5 0 9 -1 +- 68 7 +- 64 0 7090 20 Apr 05 16:43 LAG1 12 0 15 -4 +- 12 12 +- 10 3 7090 20 Apr 05 21:07 LAG2 19 0 11 -6 +- 9 6 +- 8 0 7090 21 Apr 05 01:41 LAG2 4 0 14 14 +- 141 -26 +- 132 3 7090 21 Apr 05 05:43 LAG2 16 0 10 -9 +- 11 4 +- 10 3 7090 21 Apr 05 08:41 LAG1 17 0 13 7 +- 10 8 +- 7 3 7090 21 Apr 05 09:49 LAG2 14 0 12 7 +- 12 5 +- 9 3 7090 21 Apr 05 12:08 LAG1 5 0 7 -6 +- 22 0 +- 24 3 7090 21 Apr 05 15:13 LAG1 15 0 6 -6 +- 12 0 +- 8 2 7090 21 Apr 05 18:51 LAG1 16 0 2 0 +- 10 -1 +- 9 1 7090 21 Apr 05 19:27 LAG2 13 0 4 0 +- 12 -5 +- 20 3 7090 21 Apr 05 23:33 LAG2 7 0 8 6 +- 23 -15 +- 34 5 7090 22 Apr 05 07:23 LAG1 13 0 14 -11 +- 12 -6 +- 9 8 7090 22 Apr 05 07:49 LAG2 18 0 17 -11 +- 9 -7 +- 6 2 7090 22 Apr 05 10:55 LAG1 9 0 6 -2 +- 20 -4 +- 25 1 7090 22 Apr 05 13:57 LAG1 7 0 17 -11 +- 57 4 +- 38 1 7090 22 Apr 05 21:15 LAG2 25 0 12 1 +- 8 7 +- 5 2 7090 23 Apr 05 10:05 LAG2 10 0 6 2 +- 14 7 +- 20 1 7090 23 Apr 05 12:59 LAG1 7 0 19 19 +- 37 0 +- 35 0 7090 23 Apr 05 15:55 LAG1 12 0 18 12 +- 34 13 +- 15 1 7090 23 Apr 05 23:41 LAG2 9 0 6 -5 +- 14 -2 +- 21 1 7090 24 Apr 05 04:01 LAG2 9 0 14 -11 +- 14 8 +- 28 9 7090 24 Apr 05 08:29 LAG2 8 0 5 2 +- 79 -3 +- 39 2 7090 24 Apr 05 14:53 LAG1 3 0 4 -1 +- 100 -7 +- 131 0 7090 24 Apr 05 18:09 LAG1 16 0 14 10 +- 10 -5 +- 7 4 7090 24 Apr 05 21:27 LAG2 22 0 8 0 +- 8 4 +- 5 2 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 19 Apr 05 03:03 LAG2 21 0 17 -14 +- 9 -3 +- 6 1 7105 20 Apr 05 01:13 LAG2 7 0 21 -11 +- 16 -11 +- 11 2 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 20 Apr 05 08:33 LAG1 9 0 7 9 +- 19 4 +- 19 1 7110 20 Apr 05 09:05 LAG2 13 0 8 -7 +- 11 -1 +- 7 3 7110 20 Apr 05 12:11 LAG1 14 0 8 -10 +- 15 5 +- 9 3 7110 20 Apr 05 13:12 LAG2 8 0 8 0 +- 15 5 +- 11 2 7110 20 Apr 05 18:47 LAG1 7 0 11 3 +- 15 9 +- 13 2 7110 21 Apr 05 07:17 LAG1 6 0 6 -7 +- 18 2 +- 29 1 7110 21 Apr 05 10:35 LAG1 9 0 10 17 +- 49 3 +- 23 2 7110 21 Apr 05 11:43 LAG2 8 0 13 -2 +- 54 9 +- 34 3 7110 21 Apr 05 14:15 LAG1 7 0 4 5 +- 17 -5 +- 30 0 7110 21 Apr 05 17:39 LAG1 5 0 19 12 +- 48 6 +- 51 3 7110 21 Apr 05 21:07 LAG1 6 0 11 -4 +- 45 -5 +- 34 1 7110 23 Apr 05 07:45 LAG2 3 0 2 -9 +- 92 16 +- 187 1 7110 23 Apr 05 08:05 LAG1 13 0 8 -8 +- 14 7 +- 11 2 7110 23 Apr 05 11:25 LAG1 5 0 8 15 +- 94 11 +- 47 1 7110 23 Apr 05 12:03 LAG2 9 0 6 -30 +- 98 13 +- 46 4 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 21 Apr 05 14:25 LAG2 16 0 14 10 +- 38 3 +- 27 7 7249 22 Apr 05 12:35 LAG2 7 0 13 8 +- 71 0 +- 87 10 7249 24 Apr 05 12:41 LAG2 11 0 5 1 +- 47 0 +- 33 5 7249 24 Apr 05 16:49 LAG2 13 0 14 -18 +- 78 -5 +- 53 6 7249 24 Apr 05 17:41 LAG1 10 0 6 -4 +- 55 -2 +- 51 5 7249 25 Apr 05 14:55 LAG2 16 0 10 -5 +- 39 -7 +- 34 6 Station 7405 (Concepcion) (position solved, acc. 20 mm) 7405 19 Apr 05 19:23 LAG1 4 0 9 -2 +- 65 10 +- 105 0 7405 20 Apr 05 02:01 LAG1 4 0 5 0 +- 159 -2 +- 115 2 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 18 Apr 05 06:32 LAG2 13 0 8 -8 +- 13 7 +- 14 1 7501 18 Apr 05 11:08 LAG2 5 2 40 -112 +- 94 217 +- 149 6 7501 18 Apr 05 23:11 LAG1 23 0 12 8 +- 9 3 +- 4 5 7501 20 Apr 05 20:37 LAG1 8 0 49 48 +- 14 14 +- 12 1 7501 21 Apr 05 00:11 LAG1 17 0 12 12 +- 14 0 +- 9 1 7501 21 Apr 05 12:39 LAG1 2 0 44 -1138 +- 779 -518 +- 358 0*CHK* 7501 21 Apr 05 13:21 LAG2 4 0 12 30 +- 122 15 +- 98 1 7501 21 Apr 05 16:20 LAG1 2 0 18 -34 +- 211 91 +- 373 0 7501 21 Apr 05 22:51 LAG1 6 0 28 31 +- 19 -7 +- 17 1 7501 25 Apr 05 05:23 LAG2 4 0 6 2 +- 23 28 +- 92 0 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 21 Apr 05 21:49 LAG2 16 0 6 -3 +- 46 1 +- 25 5 7810 22 Apr 05 01:33 LAG1 14 0 17 12 +- 56 -4 +- 34 3 7810 22 Apr 05 01:59 LAG2 18 0 19 -1 +- 48 -9 +- 24 4 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 19 Apr 05 02:09 LAG1 15 0 10 6 +- 47 0 +- 31 8 7811 19 Apr 05 21:47 LAG2 13 0 29 27 +- 51 0 +- 41 10 7811 20 Apr 05 00:47 LAG1 12 0 30 28 +- 53 7 +- 40 9 7811 20 Apr 05 01:53 LAG2 14 0 20 19 +- 50 -5 +- 45 8 7811 20 Apr 05 19:59 LAG2 13 0 47 39 +- 61 9 +- 49 6 7811 20 Apr 05 23:22 LAG1 13 0 26 24 +- 50 8 +- 52 7 7811 20 Apr 05 23:57 LAG2 16 0 46 42 +- 46 8 +- 36 8 7811 21 Apr 05 21:59 LAG2 18 0 25 24 +- 43 1 +- 31 6 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 19 Apr 05 06:10 LAG1 4 0 50 62 +- 341 -8 +- 234 3 7824 19 Apr 05 21:55 LAG2 9 0 32 51 +- 192 -10 +- 102 3 7824 20 Apr 05 00:59 LAG1 7 0 48 69 +- 108 21 +- 88 1 7824 20 Apr 05 02:00 LAG2 10 0 26 48 +- 95 -16 +- 60 3 7824 20 Apr 05 19:37 LAG2 2 0 27 105 +-1852 43 +-1034 0 7824 21 Apr 05 00:07 LAG2 10 0 54 61 +- 135 -4 +- 83 3 7824 21 Apr 05 03:17 LAG1 2 0 32 17 +-1694 -13 +-1438 0 7824 21 Apr 05 03:57 LAG2 7 0 46 61 +- 110 14 +- 93 1 7824 21 Apr 05 21:59 LAG2 2 0 35 33 +- 275 -7 +-1106 0 7824 22 Apr 05 20:16 LAG2 5 0 56 81 +- 481 -12 +- 234 2 7824 23 Apr 05 00:41 LAG1 7 0 76 63 +- 119 11 +- 99 1 7824 25 Apr 05 22:19 LAG2 17 0 23 23 +- 31 -13 +- 27 3 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 18 Apr 05 02:03 LAG1 10 0 4 0 +- 13 -3 +- 10 2 7825 18 Apr 05 03:21 LAG2 23 0 13 2 +- 8 -8 +- 6 5 7825 18 Apr 05 05:37 LAG1 14 0 7 2 +- 11 5 +- 8 1 7825 18 Apr 05 07:25 LAG2 19 0 3 0 +- 9 2 +- 7 1 7825 18 Apr 05 09:01 LAG1 13 0 3 -1 +- 11 -1 +- 12 3 7825 18 Apr 05 12:12 LAG1 12 0 11 -10 +- 12 0 +- 8 5 7825 18 Apr 05 15:39 LAG1 18 0 5 -1 +- 10 -1 +- 5 4 7825 18 Apr 05 21:09 LAG2 12 0 3 0 +- 13 1 +- 8 2 7825 19 Apr 05 01:19 LAG2 20 0 6 5 +- 9 0 +- 7 2 7825 19 Apr 05 04:11 LAG1 15 0 9 7 +- 11 0 +- 7 4 7825 19 Apr 05 05:35 LAG2 21 0 14 12 +- 9 2 +- 5 2 7825 19 Apr 05 07:41 LAG1 16 0 10 8 +- 10 -4 +- 8 3 7825 19 Apr 05 11:05 LAG1 5 0 11 0 +- 34 -16 +- 52 1 7825 19 Apr 05 14:17 LAG1 17 0 20 -7 +- 10 -8 +- 4 2 7825 19 Apr 05 19:17 LAG2 22 0 4 -2 +- 9 0 +- 7 2 7825 20 Apr 05 02:45 LAG1 17 0 10 -11 +- 11 -5 +- 8 3 7825 20 Apr 05 03:41 LAG2 22 0 15 2 +- 9 -11 +- 6 1 7825 20 Apr 05 06:17 LAG1 13 0 3 -1 +- 11 0 +- 6 3 7825 20 Apr 05 07:39 LAG2 20 0 5 -5 +- 9 0 +- 7 1 7825 20 Apr 05 09:45 LAG1 13 0 8 8 +- 11 0 +- 12 1 7825 20 Apr 05 12:57 LAG1 3 0 7 -47 +- 878 -15 +- 341 0 7825 20 Apr 05 21:27 LAG2 12 0 13 1 +- 13 7 +- 8 4 7825 21 Apr 05 01:49 LAG2 15 0 11 5 +- 13 2 +- 10 8 7825 21 Apr 05 04:55 LAG1 18 0 5 2 +- 10 2 +- 6 1 7825 21 Apr 05 05:52 LAG2 21 0 9 6 +- 10 3 +- 6 1 7825 21 Apr 05 11:43 LAG1 8 0 11 -11 +- 33 0 +- 25 1 7825 21 Apr 05 15:05 LAG1 16 0 13 -12 +- 10 0 +- 6 4 7825 22 Apr 05 03:35 LAG1 5 0 17 -5 +- 186 -10 +- 83 3 7825 22 Apr 05 03:55 LAG2 11 0 23 2 +- 13 -15 +- 8 4 7825 22 Apr 05 07:07 LAG1 17 0 9 0 +- 10 -6 +- 7 1 7825 22 Apr 05 08:01 LAG2 15 0 8 -7 +- 11 -2 +- 12 1 7825 22 Apr 05 10:27 LAG1 15 0 10 -5 +- 10 -7 +- 9 2 7825 22 Apr 05 13:51 LAG1 20 0 10 -10 +- 10 3 +- 5 2 7825 22 Apr 05 17:32 LAG1 7 1 9 6 +- 18 8 +- 36 4 7825 22 Apr 05 17:56 LAG2 7 7 0 0 +- 0 0 +- 0 0 7825 22 Apr 05 21:39 LAG2 17 0 12 2 +- 10 6 +- 7 8 7825 23 Apr 05 01:55 LAG2 8 0 8 12 +- 42 14 +- 37 6 7825 23 Apr 05 02:11 LAG1 9 0 15 -22 +- 46 -4 +- 30 3 7825 23 Apr 05 05:47 LAG1 8 0 4 0 +- 15 1 +- 9 2 7825 23 Apr 05 06:03 LAG2 10 0 14 0 +- 16 7 +- 8 2 7825 23 Apr 05 12:25 LAG1 13 0 9 5 +- 12 4 +- 6 2 7825 23 Apr 05 15:59 LAG1 19 0 13 -11 +- 9 5 +- 6 2 7825 23 Apr 05 19:45 LAG2 23 0 11 9 +- 9 -5 +- 6 4 7825 23 Apr 05 23:47 LAG2 10 1 5 3 +- 45 0 +- 33 5 7825 24 Apr 05 03:57 LAG2 12 0 4 12 +- 49 6 +- 25 2 7825 24 Apr 05 04:33 LAG1 4 0 6 -16 +- 84 -17 +- 70 1 7825 24 Apr 05 07:59 LAG1 9 0 18 -5 +- 14 -25 +- 19 2 7825 24 Apr 05 08:21 LAG2 8 0 6 -3 +- 19 13 +- 35 2 7825 24 Apr 05 11:29 LAG1 7 0 28 8 +- 47 -25 +- 33 4 7825 25 Apr 05 13:10 LAG1 22 0 6 3 +- 8 1 +- 4 5 7825 25 Apr 05 17:09 LAG1 7 0 7 -14 +- 48 7 +- 42 4 7825 25 Apr 05 19:49 LAG2 11 0 6 4 +- 48 0 +- 26 2 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 18 Apr 05 00:05 LAG1 11 0 13 -1 +- 23 8 +- 19 5 7832 18 Apr 05 02:01 LAG2 7 0 31 -2 +- 50 -33 +- 51 2 7832 18 Apr 05 15:24 LAG2 22 0 5 0 +- 14 -2 +- 8 4 7832 18 Apr 05 19:41 LAG2 7 0 10 -11 +- 33 -1 +- 33 2 7832 18 Apr 05 22:45 LAG1 8 0 2 1 +- 25 0 +- 19 2 7832 19 Apr 05 00:09 LAG2 11 0 2 0 +- 19 -2 +- 24 1 7832 19 Apr 05 13:37 LAG2 18 0 5 5 +- 15 0 +- 12 2 7832 19 Apr 05 17:45 LAG2 11 0 13 -14 +- 22 -12 +- 27 3 7832 19 Apr 05 21:23 LAG1 10 0 6 5 +- 24 6 +- 25 2 7832 19 Apr 05 22:07 LAG2 11 0 5 0 +- 22 -3 +- 31 4 7832 20 Apr 05 00:53 LAG1 13 0 5 4 +- 18 1 +- 16 2 7832 20 Apr 05 02:11 LAG2 9 0 22 9 +- 41 -11 +- 36 1 7832 20 Apr 05 10:57 LAG1 5 0 21 -23 +- 85 -2 +- 77 5 7832 20 Apr 05 15:41 LAG2 11 0 26 -21 +- 45 3 +- 28 1 7832 20 Apr 05 19:59 LAG2 6 0 11 -1 +- 117 8 +- 102 2 7832 23 Apr 05 10:17 LAG1 11 0 12 7 +- 20 6 +- 11 5 7832 23 Apr 05 14:05 LAG2 7 0 5 5 +- 88 0 +- 57 3 7832 23 Apr 05 18:11 LAG2 11 0 20 -18 +- 20 -11 +- 18 3 7832 23 Apr 05 22:29 LAG2 13 0 5 0 +- 32 -3 +- 25 2 7832 23 Apr 05 22:54 LAG1 12 0 13 8 +- 24 -4 +- 16 2 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 19 Apr 05 22:09 LAG2 4 0 8 8 +- 584 0 +- 293 1 7835 20 Apr 05 23:39 LAG1 7 0 14 10 +- 45 7 +- 75 1 7835 20 Apr 05 23:53 LAG2 13 0 12 11 +- 28 9 +- 27 1 7835 21 Apr 05 22:09 LAG2 11 0 3 -5 +- 54 3 +- 40 1 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 18 Apr 05 12:04 LAG2 22 0 46 42 +- 21 4 +- 14 9 7838 18 Apr 05 15:23 LAG1 11 0 28 33 +- 42 -7 +- 36 2 7838 19 Apr 05 01:23 LAG1 11 0 51 50 +- 31 -2 +- 24 5 7838 19 Apr 05 10:06 LAG2 21 0 38 32 +- 20 12 +- 12 5 7838 21 Apr 05 02:07 LAG1 20 0 48 47 +- 21 3 +- 12 4 7838 22 Apr 05 00:53 LAG1 15 0 60 59 +- 24 -9 +- 19 10 7838 22 Apr 05 04:19 LAG1 12 0 38 37 +- 32 0 +- 15 9 7838 22 Apr 05 08:28 LAG2 19 0 27 26 +- 22 2 +- 15 3 7838 22 Apr 05 12:32 LAG2 15 0 45 42 +- 24 8 +- 18 6 7838 23 Apr 05 14:49 LAG2 19 0 48 49 +- 22 6 +- 19 6 7838 23 Apr 05 15:29 LAG1 16 0 45 42 +- 25 4 +- 18 3 7838 24 Apr 05 08:49 LAG2 13 0 30 25 +- 34 3 +- 23 6 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 21 Apr 05 10:00 LAG1 5 0 5 3 +- 27 1 +- 16 1 7839 21 Apr 05 13:42 LAG1 4 0 4 3 +- 59 -7 +- 59 1 7839 21 Apr 05 17:43 LAG2 27 0 7 4 +- 8 -2 +- 4 1 7839 21 Apr 05 21:53 LAG2 14 0 6 -4 +- 11 2 +- 5 3 7839 21 Apr 05 22:05 LAG1 5 0 7 -7 +- 19 2 +- 19 1 7839 22 Apr 05 01:25 LAG1 19 0 18 5 +- 11 -7 +- 5 3 7839 22 Apr 05 01:59 LAG2 19 0 18 1 +- 11 -10 +- 6 1 7839 22 Apr 05 05:02 LAG1 17 0 1 0 +- 10 0 +- 6 1 7839 22 Apr 05 08:29 LAG1 11 0 10 -9 +- 12 -2 +- 7 0 7839 22 Apr 05 11:53 LAG1 12 0 11 3 +- 12 -5 +- 6 1 7839 22 Apr 05 15:59 LAG2 15 0 8 2 +- 10 6 +- 8 1 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 18 Apr 05 10:27 LAG1 14 0 16 7 +- 18 -6 +- 11 6 7840 18 Apr 05 14:29 LAG1 4 0 14 33 +- 283 -28 +- 173 1 7840 18 Apr 05 19:29 LAG2 13 0 11 9 +- 18 5 +- 11 2 7840 18 Apr 05 23:26 LAG2 17 0 16 -1 +- 16 8 +- 8 6 7840 19 Apr 05 05:45 LAG1 9 0 1 0 +- 30 0 +- 25 1 7840 19 Apr 05 09:13 LAG1 9 0 16 14 +- 24 -3 +- 24 2 7840 19 Apr 05 12:37 LAG1 17 0 18 -4 +- 16 -9 +- 9 4 7840 19 Apr 05 17:41 LAG2 14 0 21 20 +- 17 0 +- 15 5 7840 19 Apr 05 21:31 LAG2 20 0 12 2 +- 14 5 +- 7 5 7840 20 Apr 05 00:49 LAG1 12 0 14 13 +- 19 4 +- 17 3 7840 20 Apr 05 01:43 LAG2 22 0 13 -1 +- 14 -7 +- 9 3 7840 20 Apr 05 04:21 LAG1 17 0 11 -6 +- 16 5 +- 9 2 7840 20 Apr 05 05:51 LAG2 6 0 16 -15 +- 31 -6 +- 80 1 7840 20 Apr 05 07:50 LAG1 9 0 10 2 +- 22 5 +- 13 3 7840 20 Apr 05 11:27 LAG1 4 0 6 3 +- 41 2 +- 79 5 7840 21 Apr 05 09:53 LAG1 12 0 7 6 +- 19 2 +- 11 3 7840 21 Apr 05 13:49 LAG1 7 0 13 3 +- 92 -10 +- 58 2 7840 21 Apr 05 17:53 LAG2 16 0 8 8 +- 16 0 +- 13 2 7840 21 Apr 05 21:53 LAG2 19 0 8 5 +- 17 2 +- 10 3 7840 22 Apr 05 01:31 LAG1 13 0 25 4 +- 18 -11 +- 8 4 7840 22 Apr 05 01:53 LAG2 18 0 19 0 +- 16 -10 +- 9 3 7840 22 Apr 05 05:07 LAG1 15 0 10 4 +- 17 -5 +- 9 3 7840 22 Apr 05 08:37 LAG1 13 0 11 -2 +- 19 -6 +- 13 3 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 18 Apr 05 00:01 LAG1 11 0 6 -6 +- 12 -1 +- 14 2 7841 18 Apr 05 01:43 LAG2 4 0 11 -9 +- 38 -30 +- 73 5 7841 18 Apr 05 07:00 LAG1 12 0 24 5 +- 12 -5 +- 10 22 7841 18 Apr 05 23:53 LAG2 11 0 8 -4 +- 25 7 +- 16 4 7841 20 Apr 05 00:41 LAG1 13 2 5 7 +- 25 2 +- 15 3 7841 20 Apr 05 01:47 LAG2 12 1 9 -7 +- 16 -9 +- 14 4 7841 20 Apr 05 04:17 LAG1 12 0 11 -8 +- 12 2 +- 6 3 7841 20 Apr 05 23:55 LAG2 6 0 9 9 +- 55 12 +- 43 6 7841 21 Apr 05 06:25 LAG1 17 0 11 1 +- 10 5 +- 6 5 7841 23 Apr 05 22:09 LAG2 16 0 11 10 +- 11 0 +- 8 3 7841 23 Apr 05 22:47 LAG1 9 0 14 0 +- 14 12 +- 12 5 7841 24 Apr 05 02:13 LAG2 9 0 11 -19 +- 26 -17 +- 22 4 7841 24 Apr 05 02:31 LAG1 14 0 20 11 +- 13 -15 +- 8 2 7841 24 Apr 05 20:19 LAG2 13 0 17 -4 +- 11 9 +- 8 12 7841 25 Apr 05 00:23 LAG2 9 0 3 -1 +- 19 -3 +- 19 1 7841 25 Apr 05 00:54 LAG1 19 0 8 0 +- 9 1 +- 5 8 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 19 Apr 05 02:07 LAG1 5 0 5 49 +- 254 18 +- 98 2 7941 19 Apr 05 04:01 LAG2 3 0 3 -1 +- 36 -5 +- 135 0 7941 19 Apr 05 17:39 LAG2 11 0 5 2 +- 12 -2 +- 8 3 7941 19 Apr 05 21:51 LAG2 3 0 3 6 +- 133 7 +- 149 3 7941 21 Apr 05 22:23 LAG2 9 0 8 11 +- 66 -10 +- 36 3 7941 22 Apr 05 20:03 LAG2 5 0 16 -5 +- 22 9 +- 15 0 7941 23 Apr 05 00:23 LAG2 7 0 8 11 +- 23 -3 +- 14 2 7941 23 Apr 05 03:55 LAG1 4 0 9 20 +- 48 20 +- 65 2 7941 23 Apr 05 04:24 LAG2 8 0 3 3 +- 22 -6 +- 30 1 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 20 Apr 05 23:39 LAG1 6 0 21 4 +- 39 19 +- 44 1 8834 20 Apr 05 23:53 LAG2 4 0 17 -21 +- 154 -1 +- 88 2 8834 21 Apr 05 03:13 LAG1 3 0 7 -1 +- 43 18 +- 105 3 8834 21 Apr 05 03:55 LAG2 10 0 11 -9 +- 13 4 +- 9 3 8834 21 Apr 05 06:29 LAG1 7 0 20 -19 +- 15 6 +- 12 3 8834 21 Apr 05 10:15 LAG1 2 0 6 200 +-1018 -116 +- 580 0 8834 21 Apr 05 17:56 LAG2 13 0 12 -10 +- 12 -2 +- 6 2 8834 21 Apr 05 22:05 LAG1 4 1 22 -26 +- 47 -18 +- 201 0 8834 21 Apr 05 22:29 LAG2 6 0 10 29 +- 209 -16 +- 89 1 8834 22 Apr 05 02:27 LAG2 3 0 8 12 +- 257 -12 +- 160 1 8834 22 Apr 05 05:04 LAG1 12 0 16 -15 +- 12 -2 +- 7 5 8834 22 Apr 05 08:29 LAG1 9 0 23 -25 +- 15 -4 +- 9 3 8834 22 Apr 05 12:15 LAG1 12 0 16 -17 +- 23 1 +- 12 6 8834 22 Apr 05 16:11 LAG2 8 0 11 -10 +- 15 7 +- 13 2 8834 22 Apr 05 20:01 LAG2 14 0 16 -5 +- 11 11 +- 9 2 8834 23 Apr 05 04:29 LAG2 3 0 7 11 +- 255 -3 +- 222 1 8834 23 Apr 05 07:19 LAG1 4 0 20 -16 +- 54 6 +- 75 1 8834 23 Apr 05 11:15 LAG1 2 0 22 -813 +-2983 294 +-1052 0 8834 23 Apr 05 18:16 LAG2 14 0 19 -11 +- 14 -7 +- 10 3 -------------------------------------------------------------------------------- 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 - 050421 0/ 99/ 0 0/ 94/ 0 193 1873 SIMLAS 040703 - 050426 0/ 28/ 0 0/ 24/ 0 52 1884 RIGLAS 040712 - 050422 0/ 48/ 1 0/ 46/ 3 98 1893 CRMLAS 040705 - 041012 0/ 45/ 0 0/ 35/ 0 80 6405 TIGO 040710 - 050423 12/ 15/ 2 10/ 20/ 2 61 6810 ZIMLAT 040805 - 050423 196/119/ 21 114/115/ 19 584 7080 MLRS25 040701 - 050422 65/ 73/ 5 59/ 97/ 7 306 7090 ML0514 040716 - 050424 154/462/ 39 148/282/ 35 1120 7105 ML0725 040701 - 050420 0/ 87/ 4 2/118/ 7 218 7110 ML0414 040701 - 050423 90/148/ 18 83/161/ 22 522 7124 ML0819 040705 - 050412 0/ 35/ 0 0/ 14/ 0 49 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 - 050425 0/109/ 0 0/141/ 0 250 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 - 050422 242/145/ 27 136/132/ 23 705 7811 POLLAS 040706 - 050421 0/ 61/ 0 0/ 81/ 0 142 7824 SPNLAS 040701 - 050426 1/112/ 0 0/116/ 1 230 7825 STL3 040807 - 050425 179/276/ 40 181/166/ 30 872 7832 SALRO 040702 - 050423 150/245/ 19 198/300/ 30 942 7835 GRASSE 040702 - 050426 0/ 52/ 2 0/ 49/ 2 105 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 - 050424 74/130/ 4 82/170/ 10 470 7839 AUSLAS 040701 - 050422 219/182/ 30 96/182/ 26 735 7840 RGOLAS 040701 - 050422 169/118/ 26 89/128/ 18 548 7841 GFZLA3 040702 - 050426 61/ 77/ 17 28/105/ 12 300 7845 GRASLL 040705 - 040920 11/ 14/ 0 3/ 12/ 1 41 7941 MLROnn 040701 - 050423 94/ 71/ 11 83/ 94/ 12 365 8834 WLRS01 040701 - 050423 252/157/ 30 147/179/ 25 790 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050419.0 -52.8 +/- 0.1 272.0 +/- 0.1 -32643.43 +/- 0.01 050420.0 -54.1 +/- 0.1 274.5 +/- 0.1 -32644.59 +/- 0.02 050421.0 -54.9 +/- 0.1 276.2 +/- 0.1 -32645.93 +/- 0.02 050422.0 -56.1 +/- 0.1 278.8 +/- 0.1 -32647.40 +/- 0.03 050423.0 -57.1 +/- 0.1 281.0 +/- 0.1 -32649.00 +/- 0.04 050424.0 -58.5 +/- 0.1 283.1 +/- 0.1 -32650.54 +/- 0.04 050425.0 -58.7 +/- 0.2 284.8 +/- 0.2 -32652.07 +/- 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 ******************************************************************************** |