| Date: | 2005-05-27 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5386: Delft QL Report May 27, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-05-27 13:15:00 UTC Message No. 5386 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report May 27, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS May 27, 2005 This is a daily report, presenting the results of a continuing analysis of the most recent global LAGEOS-1 and LAGEOS-2 quick-look laser ranging data. The report consists of (A) a pass summary, (B) an overview of the analysis results, detailed statistics of the analysed measurements, and an accumulative pass overview and (C) the earth rotation parameter solutions submitted to IERS. The report is based on all quick-look data as received until Fri, May 27, 2005. Questions and comments should be addressed to: R. Noomen Delft University of Technology Faculty of Aerospace Engineering Delft Institute for Earth-Oriented Space Research Kluyverweg 1 2629 HS Delft The Netherlands Telephone: +31-15-2785377 Telefax : +31-15-2785322 E-mail : ron.noomen@deos.tudelft.nl A. PASS SUMMARY The table below gives an overview of the ranging data both on LAGEOS-1 and LAGEOS-2, as received by the Quick-Look Data Analysis Center (QLDAC) on Fri, May 27, 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 ------------------------------------------------------------------------------ 1831 Lviv, Ukraine 050525 - 050526 2 2 1864 Maidanak, Uzbekistan (site 2) 050525 - 050526 2 1 1873 Simeiz, Crimea, Ukraine 050525 - 050526 1 1 1884 Riga, Latvia 050526 - 050527 1 1 6810 Zimmerwald 846, Switzerland 050525 - 050527 10 8 7090 Yarragadee, Australia 050525 - 050526 4 2 7237 Changchun, China 050526 - 050526 1 2 7501 Hartebeesthoek, SA (MOB-6) 050525 - 050526 2 2 7810 Zimmerwald 423, Switzerland 050525 - 050527 10 8 7824 San Fernando, Spain 050525 - 050527 2 4 7825 Mount Stromlo, Australia 050525 - 050526 7 4 7832 Riyad, Saudi Arabia 050525 - 050526 1 2 7835 Grasse, France 050526 - 050526 - 1 7838 Simosato Observatory, Japan 050525 - 050526 2 3 7840 Herstmonceux, United Kingdom 050525 - 050527 4 4 7841 Potsdam, Germany 050525 - 050526 2 - 7848 Ajaccio, Corsica (FTLRS) 050525 - 050527 3 3 7941 Matera, Italy (MLRO 532) 050525 - 050527 2 5 8834 Wettzell, Germany 050525 - 050527 7 6 ------ ------ --- --- TOTAL 050525 - 050527 63 59 ------------------------------------------------------------------------------ B. ANALYSIS RESULTS The analysis is based on two orbit solutions using global quick-look normal points that cover a period of 8 days which are computed simultaneously. This week´s data interval runs from Thu, May 19, 2005 to Fri, May 27, 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 200/200 182/179 Number of Normal Points 2094/2064 2271/2239 Weighted RMS of Fit (mm) 16 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 1831 (Lviv) (position fixed, acc. 400 mm) 1831 25 May 05 21:47 LAG1 3 0 152 0 +-3601 141 +-3355 8 1831 25 May 05 21:59 LAG2 5 0 101 -78 +-1172 27 +-1345 13 1831 26 May 05 20:09 LAG2 9 0 437 -489 +- 453 305 +- 465 20 1831 26 May 05 23:47 LAG1 7 0 49 -46 +- 479 5 +- 607 11 Station 1864 (Maidanak) (position fixed, acc. 200 mm) 1864 19 May 05 17:43 LAG2 4 0 24 -21 +- 398 12 +-1111 16 1864 21 May 05 17:59 LAG2 7 0 36 14 +- 388 7 +- 271 27 1864 25 May 05 18:11 LAG1 2 0 39 -296 +-7779 298 +-8922 0 1864 25 May 05 18:17 LAG2 7 0 19 -1 +- 267 15 +- 340 14 1864 26 May 05 20:01 LAG1 11 0 40 21 +- 181 -14 +- 94 18 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 25 May 05 22:11 LAG2 7 1 1313 1360 +- 358 -263 +- 465 484*CHK* 1873 26 May 05 20:12 LAG1 8 0 185 170 +- 246 18 +- 278 46 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 19 May 05 21:07 LAG2 21 0 45 44 +- 65 -2 +- 42 7 1884 19 May 05 22:29 LAG1 17 0 24 20 +- 73 -6 +- 52 5 1884 20 May 05 19:37 LAG2 8 0 23 -57 +- 356 23 +- 213 3 1884 20 May 05 21:19 LAG1 7 0 13 -9 +- 166 -7 +- 248 1 1884 20 May 05 23:19 LAG2 13 0 31 31 +- 86 -15 +- 83 3 1884 21 May 05 21:21 LAG2 14 0 37 34 +- 92 -3 +- 74 5 1884 21 May 05 23:23 LAG1 14 0 5 -3 +- 80 0 +- 61 3 1884 22 May 05 19:33 LAG2 12 0 7 0 +- 89 -6 +- 87 3 1884 23 May 05 21:35 LAG2 19 0 15 14 +- 69 -1 +- 49 2 1884 24 May 05 00:17 LAG1 12 0 9 -9 +- 91 0 +- 72 3 1884 26 May 05 20:17 LAG2 9 0 8 -1 +- 305 2 +- 181 7 1884 26 May 05 23:43 LAG1 9 0 9 -8 +- 100 -5 +- 108 3 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 19 May 05 00:01 LAG1 20 0 25 -12 +- 43 -9 +- 23 7 6810 19 May 05 16:49 LAG2 27 0 19 -19 +- 35 0 +- 18 2 6810 19 May 05 20:57 LAG2 19 0 14 -12 +- 42 0 +- 22 6 6810 19 May 05 22:29 LAG1 23 0 23 -22 +- 38 -4 +- 23 4 6810 20 May 05 01:01 LAG2 24 0 14 -10 +- 37 -5 +- 25 3 6810 20 May 05 02:05 LAG1 21 0 7 -1 +- 42 3 +- 22 3 6810 20 May 05 05:41 LAG1 17 0 11 -8 +- 45 6 +- 31 3 6810 20 May 05 08:57 LAG1 14 0 12 -9 +- 55 1 +- 26 8 6810 20 May 05 12:35 LAG1 15 0 8 -7 +- 47 0 +- 33 4 6810 20 May 05 15:05 LAG2 19 0 14 -12 +- 42 -4 +- 28 1 6810 20 May 05 19:01 LAG2 22 0 17 -17 +- 39 -2 +- 21 3 6810 22 May 05 10:11 LAG1 12 0 12 2 +- 144 -5 +- 63 6 6810 24 May 05 07:23 LAG1 12 0 16 -23 +- 87 5 +- 47 2 6810 24 May 05 10:35 LAG1 15 0 12 0 +- 49 4 +- 23 7 6810 24 May 05 15:23 LAG2 23 0 14 -13 +- 38 -2 +- 19 3 6810 24 May 05 19:28 LAG2 24 0 21 -20 +- 37 -5 +- 22 3 6810 24 May 05 22:43 LAG1 9 0 35 -23 +- 91 5 +- 39 8 6810 24 May 05 23:35 LAG2 22 0 35 -22 +- 39 -15 +- 23 2 6810 25 May 05 02:17 LAG1 19 0 9 -6 +- 44 -1 +- 19 7 6810 25 May 05 05:53 LAG1 18 0 5 -1 +- 43 0 +- 28 5 6810 25 May 05 09:09 LAG1 18 0 22 -13 +- 48 -4 +- 21 8 6810 25 May 05 12:51 LAG1 11 0 10 -10 +- 60 -2 +- 43 4 6810 25 May 05 13:33 LAG2 21 0 20 20 +- 39 -1 +- 26 3 6810 25 May 05 17:34 LAG2 24 0 14 -10 +- 37 4 +- 22 5 6810 25 May 05 21:21 LAG1 16 0 36 -38 +- 53 -2 +- 43 3 6810 25 May 05 21:41 LAG2 14 0 20 -7 +- 49 -8 +- 29 8 6810 26 May 05 00:54 LAG1 9 0 6 -2 +- 128 -1 +- 51 6 6810 26 May 05 01:47 LAG2 11 0 14 3 +- 57 -13 +- 52 2 6810 26 May 05 04:31 LAG1 17 0 12 11 +- 45 2 +- 30 4 6810 26 May 05 08:09 LAG1 15 0 42 -30 +- 73 -8 +- 40 3 6810 26 May 05 11:21 LAG1 17 0 46 21 +- 44 -18 +- 23 19 6810 26 May 05 11:49 LAG2 10 0 27 10 +- 66 22 +- 68 20 6810 26 May 05 15:35 LAG2 4 0 29 -18 +- 91 8 +- 34 1 6810 26 May 05 19:43 LAG2 24 0 19 -8 +- 37 -9 +- 20 4 6810 26 May 05 23:31 LAG1 8 0 15 -30 +- 527 -6 +- 208 4 6810 26 May 05 23:53 LAG2 4 0 33 15 +- 867 -10 +- 499 0 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 23 May 05 03:17 LAG2 4 0 11 -6 +- 287 11 +- 206 6 7080 23 May 05 05:54 LAG1 14 0 21 7 +- 22 -18 +- 16 4 7080 23 May 05 09:45 LAG1 1 0 10 0 +- 0 0 +- 0 0 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 19 May 05 16:21 LAG1 7 0 6 -12 +- 148 7 +- 54 1 7090 20 May 05 20:23 LAG2 19 0 12 -3 +- 9 -6 +- 5 3 7090 21 May 05 01:01 LAG2 6 0 12 -12 +- 25 0 +- 60 3 7090 21 May 05 17:21 LAG1 1 0 3 0 +- 0 0 +- 0 0 7090 21 May 05 18:29 LAG2 30 0 11 -4 +- 7 6 +- 4 1 7090 21 May 05 23:03 LAG2 6 0 20 -16 +- 24 -9 +- 52 0 7090 22 May 05 03:25 LAG2 5 0 6 -9 +- 32 13 +- 63 2 7090 22 May 05 05:15 LAG1 8 0 26 -27 +- 15 -2 +- 10 3 7090 22 May 05 07:12 LAG2 8 0 10 2 +- 26 -8 +- 32 5 7090 22 May 05 11:54 LAG1 15 0 19 0 +- 10 16 +- 10 8 7090 22 May 05 15:13 LAG1 22 0 24 0 +- 8 12 +- 4 1 7090 22 May 05 16:59 LAG2 11 0 14 -14 +- 16 0 +- 16 1 7090 22 May 05 20:42 LAG2 24 0 15 2 +- 9 -9 +- 5 1 7090 23 May 05 01:25 LAG2 7 0 4 -5 +- 28 10 +- 43 2 7090 23 May 05 03:57 LAG1 6 0 18 -35 +- 39 -20 +- 37 2 7090 23 May 05 05:13 LAG2 7 0 25 -27 +- 34 -1 +- 20 2 7090 23 May 05 07:29 LAG1 13 0 21 -1 +- 13 -17 +- 11 4 7090 23 May 05 10:47 LAG1 10 0 5 -4 +- 14 -3 +- 20 1 7090 23 May 05 14:19 LAG1 5 0 8 -10 +- 88 2 +- 52 5 7090 23 May 05 17:29 LAG1 12 0 7 8 +- 14 5 +- 13 2 7090 23 May 05 18:46 LAG2 24 0 15 -13 +- 8 6 +- 5 2 7090 23 May 05 23:01 LAG2 19 0 8 0 +- 9 -5 +- 8 5 7090 24 May 05 06:02 LAG1 18 0 17 -13 +- 10 -4 +- 6 4 7090 24 May 05 09:35 LAG1 9 0 15 6 +- 19 11 +- 24 2 7090 24 May 05 12:41 LAG1 12 0 12 12 +- 12 0 +- 11 1 7090 24 May 05 16:03 LAG1 18 0 36 -17 +- 9 18 +- 5 3 7090 24 May 05 17:13 LAG2 15 0 9 -14 +- 17 12 +- 14 1 7090 24 May 05 20:55 LAG2 21 0 11 9 +- 9 -4 +- 6 3 7090 25 May 05 01:27 LAG2 7 0 6 2 +- 21 0 +- 24 5 7090 25 May 05 11:29 LAG1 8 0 14 -10 +- 15 14 +- 16 2 7090 25 May 05 14:37 LAG1 13 0 30 -17 +- 12 11 +- 7 4 7090 25 May 05 18:23 LAG1 12 0 11 3 +- 12 15 +- 17 2 7090 25 May 05 18:57 LAG2 25 0 5 -5 +- 8 0 +- 4 1 7090 25 May 05 23:13 LAG2 15 0 12 -14 +- 14 -14 +- 14 3 7090 26 May 05 10:17 LAG1 8 0 19 -21 +- 17 10 +- 29 1 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 19 May 05 06:27 LAG2 16 0 5 -5 +- 10 -1 +- 7 1 7110 19 May 05 08:03 LAG1 9 0 8 12 +- 37 -7 +- 18 6 7110 19 May 05 10:26 LAG2 10 0 7 3 +- 24 -3 +- 22 2 7110 19 May 05 11:27 LAG1 7 0 2 -1 +- 22 -2 +- 28 1 7110 19 May 05 18:15 LAG1 7 0 7 11 +- 61 -7 +- 32 6 7110 20 May 05 04:23 LAG2 7 0 10 -12 +- 20 -4 +- 14 3 7110 20 May 05 06:31 LAG1 5 0 11 -11 +- 22 0 +- 18 1 7110 20 May 05 08:41 LAG2 8 0 3 2 +- 15 0 +- 8 2 7110 20 May 05 09:59 LAG1 10 0 5 4 +- 13 -1 +- 13 2 7110 20 May 05 13:27 LAG1 7 0 4 -2 +- 17 -4 +- 30 1 7110 20 May 05 16:59 LAG1 4 0 4 22 +- 166 -11 +- 92 2 7110 21 May 05 06:39 LAG2 17 0 10 1 +- 10 -5 +- 6 6 7110 21 May 05 08:51 LAG1 6 0 18 2 +- 46 -14 +- 32 2 7110 21 May 05 10:51 LAG2 2 0 7 3 +- 195 -8 +- 389 0 7110 21 May 05 12:03 LAG1 6 0 11 6 +- 17 -7 +- 13 4 7110 21 May 05 15:39 LAG1 4 0 15 -36 +- 152 15 +- 112 1 7110 23 May 05 12:53 LAG1 10 0 10 9 +- 14 -6 +- 18 5 7110 23 May 05 19:51 LAG1 6 0 8 3 +- 77 -6 +- 43 1 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 19 May 05 08:31 LAG1 4 0 32 28 +- 30 -9 +- 68 1 7124 20 May 05 07:29 LAG1 2 0 4 -61 +- 773 38 +- 457 0 7124 23 May 05 10:20 LAG1 4 0 39 50 +- 178 -41 +- 84 1 7124 23 May 05 11:31 LAG2 7 0 12 18 +- 24 -11 +- 19 1 7124 24 May 05 08:45 LAG1 7 0 15 -5 +- 19 -8 +- 13 1 7124 25 May 05 07:25 LAG1 7 0 16 15 +- 16 -19 +- 27 1 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 19 May 05 13:56 LAG2 11 0 48 -35 +- 66 -11 +- 51 6 7237 19 May 05 15:19 LAG1 10 0 65 -64 +- 52 -2 +- 57 6 7237 19 May 05 18:01 LAG2 4 0 19 -22 +- 123 20 +- 272 11 7237 19 May 05 19:00 LAG1 2 0 26 -128 +- 556 180 +- 851 0 7237 20 May 05 11:57 LAG2 14 0 25 -17 +- 54 -3 +- 35 14 7237 20 May 05 13:47 LAG1 10 0 9 -6 +- 48 -5 +- 61 6 7237 20 May 05 15:48 LAG2 12 0 34 29 +- 45 -6 +- 26 9 7237 20 May 05 17:19 LAG1 15 0 34 30 +- 40 -4 +- 23 7 7237 24 May 05 12:21 LAG2 10 0 32 21 +- 55 -16 +- 63 8 7237 24 May 05 15:22 LAG1 16 0 31 19 +- 38 15 +- 24 10 7237 24 May 05 16:49 LAG2 5 0 12 14 +- 678 -2 +- 354 5 7237 24 May 05 19:08 LAG1 4 0 20 18 +- 79 8 +- 195 5 7237 26 May 05 12:31 LAG2 12 0 205 -187 +- 44 -47 +- 26 30*CHK* 7237 26 May 05 16:09 LAG1 11 0 22 13 +- 72 -5 +- 41 7 7237 26 May 05 16:51 LAG2 10 0 27 37 +- 122 -8 +- 87 5 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 19 May 05 19:41 LAG1 6 0 18 42 +- 107 12 +- 51 1 7501 22 May 05 22:45 LAG1 20 0 11 2 +- 9 -7 +- 6 1 7501 23 May 05 00:21 LAG2 7 0 13 9 +- 28 -4 +- 32 0 7501 23 May 05 08:44 LAG2 8 0 31 26 +- 14 -9 +- 13 9 7501 23 May 05 18:05 LAG1 9 0 21 20 +- 16 2 +- 22 1 7501 23 May 05 21:13 LAG1 15 0 23 20 +- 10 -3 +- 5 3 7501 23 May 05 22:27 LAG2 16 0 13 13 +- 10 -1 +- 11 1 7501 24 May 05 02:35 LAG2 15 0 15 -7 +- 12 14 +- 10 1 7501 24 May 05 09:53 LAG1 16 0 24 -13 +- 11 9 +- 8 5 7501 24 May 05 11:07 LAG2 3 0 56 43 +- 139 -15 +- 160 1 7501 24 May 05 19:55 LAG1 11 0 51 41 +- 12 11 +- 6 4 7501 24 May 05 23:29 LAG1 7 0 14 -12 +- 50 1 +- 37 1 7501 25 May 05 00:39 LAG2 9 0 13 11 +- 21 1 +- 10 1 7501 25 May 05 13:19 LAG2 3 0 13 13 +- 24 0 +- 249 0 7501 25 May 05 18:45 LAG1 9 0 23 25 +- 14 13 +- 20 2 7501 25 May 05 22:07 LAG1 16 0 21 21 +- 10 -1 +- 6 1 7501 26 May 05 07:09 LAG2 13 0 10 9 +- 11 6 +- 15 1 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 19 May 05 00:00 LAG1 14 0 13 1 +- 48 -7 +- 30 5 7810 19 May 05 16:49 LAG2 26 0 7 -6 +- 35 1 +- 19 3 7810 19 May 05 20:57 LAG2 19 0 5 -3 +- 42 1 +- 22 3 7810 19 May 05 22:29 LAG1 21 0 14 -15 +- 42 -3 +- 27 4 7810 20 May 05 01:01 LAG2 23 0 9 -2 +- 38 -5 +- 26 3 7810 20 May 05 02:05 LAG1 20 0 8 5 +- 44 3 +- 23 3 7810 20 May 05 05:43 LAG1 17 0 8 -4 +- 47 5 +- 31 2 7810 20 May 05 08:57 LAG1 14 0 5 -1 +- 53 2 +- 27 4 7810 20 May 05 12:36 LAG1 15 0 6 -1 +- 48 -3 +- 34 3 7810 20 May 05 15:05 LAG2 20 0 7 -3 +- 41 -4 +- 27 1 7810 20 May 05 19:01 LAG2 23 0 10 -8 +- 38 -3 +- 20 2 7810 22 May 05 10:13 LAG1 10 0 11 24 +- 185 -11 +- 80 7 7810 24 May 05 07:23 LAG1 11 0 10 -15 +- 89 4 +- 47 4 7810 24 May 05 10:35 LAG1 13 0 17 9 +- 53 5 +- 26 6 7810 24 May 05 15:23 LAG2 20 0 7 -2 +- 42 -3 +- 21 3 7810 24 May 05 19:29 LAG2 23 0 13 -12 +- 39 -5 +- 23 2 7810 24 May 05 22:45 LAG1 8 0 26 -10 +- 91 7 +- 40 6 7810 24 May 05 23:35 LAG2 22 0 30 -17 +- 39 -14 +- 23 2 7810 25 May 05 02:17 LAG1 20 0 7 -1 +- 41 -1 +- 18 6 7810 25 May 05 05:53 LAG1 18 0 5 2 +- 45 -1 +- 27 4 7810 25 May 05 09:09 LAG1 17 0 15 -7 +- 48 -3 +- 22 7 7810 25 May 05 12:54 LAG1 8 0 6 -1 +- 71 -3 +- 55 4 7810 25 May 05 13:41 LAG2 14 0 12 12 +- 50 -2 +- 31 3 7810 25 May 05 17:37 LAG2 24 0 7 0 +- 37 4 +- 22 2 7810 25 May 05 21:21 LAG1 17 0 30 -31 +- 51 -3 +- 43 3 7810 25 May 05 21:41 LAG2 7 0 9 4 +- 97 -2 +- 64 3 7810 26 May 05 00:55 LAG1 9 0 7 10 +- 128 2 +- 51 4 7810 26 May 05 01:47 LAG2 10 0 16 12 +- 58 -11 +- 57 3 7810 26 May 05 04:31 LAG1 16 0 16 15 +- 47 3 +- 33 5 7810 26 May 05 08:09 LAG1 15 0 34 -18 +- 73 -9 +- 40 3 7810 26 May 05 11:23 LAG1 16 0 49 30 +- 46 -20 +- 24 19 7810 26 May 05 11:49 LAG2 9 0 29 21 +- 77 21 +- 77 22 7810 26 May 05 15:35 LAG2 3 0 29 -9 +- 112 9 +- 42 1 7810 26 May 05 19:43 LAG2 23 0 15 -5 +- 38 -8 +- 21 3 7810 26 May 05 23:37 LAG1 6 0 12 -27 +- 688 -6 +- 288 1 7810 26 May 05 23:53 LAG2 4 0 41 -7 +- 924 -28 +- 531 5 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 19 May 05 00:03 LAG1 13 0 28 24 +- 50 -10 +- 38 9 7811 19 May 05 21:09 LAG2 10 0 40 57 +- 97 21 +- 78 7 7811 19 May 05 22:35 LAG1 3 0 26 32 +-1542 3 +- 850 5 7811 20 May 05 23:13 LAG2 14 0 31 16 +- 50 -15 +- 33 6 7811 21 May 05 00:47 LAG1 17 0 42 25 +- 44 -20 +- 27 5 7811 24 May 05 22:51 LAG1 3 0 6 15 +-1502 5 +- 828 3 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 19 May 05 20:57 LAG2 11 0 37 35 +- 37 7 +- 31 2 7824 20 May 05 01:20 LAG2 11 0 49 59 +- 57 -8 +- 33 4 7824 20 May 05 19:37 LAG2 5 0 24 189 +-1102 -75 +- 492 6 7824 21 May 05 03:25 LAG2 2 0 36 60 +-1677 64 +-4448 0 7824 21 May 05 21:15 LAG2 14 0 34 23 +- 33 -13 +- 21 17 7824 21 May 05 23:41 LAG1 5 0 47 38 +- 220 -7 +- 181 1 7824 22 May 05 22:24 LAG1 1 0 22 0 +- 0 0 +- 0 0 7824 22 May 05 23:51 LAG2 7 0 24 76 +- 190 -37 +- 116 8 7824 23 May 05 21:51 LAG2 9 0 33 53 +- 113 -16 +- 80 3 7824 24 May 05 00:29 LAG1 10 0 58 59 +- 46 1 +- 40 4 7824 24 May 05 01:36 LAG2 12 0 34 40 +- 45 -8 +- 27 5 7824 24 May 05 04:17 LAG1 3 0 67 85 +- 405 -13 +- 312 5 7824 25 May 05 21:51 LAG2 7 0 44 41 +- 84 -4 +- 97 1 7824 26 May 05 01:07 LAG1 15 0 48 46 +- 31 0 +- 16 12 7824 26 May 05 01:51 LAG2 7 0 58 62 +- 106 4 +- 105 4 7824 26 May 05 19:51 LAG2 13 0 38 39 +- 35 -8 +- 31 3 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 19 May 05 01:57 LAG1 17 0 10 -10 +- 12 -1 +- 7 3 7825 19 May 05 09:07 LAG1 8 0 10 -12 +- 24 4 +- 25 1 7825 19 May 05 12:41 LAG1 5 0 8 -16 +- 145 10 +- 66 4 7825 19 May 05 22:46 LAG2 27 0 7 2 +- 8 3 +- 5 4 7825 20 May 05 07:45 LAG1 11 0 6 -1 +- 14 6 +- 15 2 7825 20 May 05 10:57 LAG1 12 0 11 -9 +- 13 7 +- 7 2 7825 20 May 05 14:21 LAG1 14 0 12 -2 +- 12 5 +- 6 5 7825 20 May 05 21:09 LAG2 12 0 7 6 +- 20 -9 +- 17 2 7825 21 May 05 01:29 LAG2 9 0 3 4 +- 44 -3 +- 22 2 7825 21 May 05 02:51 LAG1 2 0 31 250 +-1719 89 +- 705 0 7825 21 May 05 12:59 LAG1 14 0 5 -4 +- 14 -2 +- 8 3 7825 21 May 05 15:05 LAG2 12 0 11 -10 +- 14 4 +- 17 7 7825 21 May 05 18:53 LAG2 23 0 16 14 +- 8 0 +- 6 7 7825 21 May 05 23:09 LAG2 11 0 6 -4 +- 24 0 +- 22 4 7825 22 May 05 03:11 LAG2 12 0 16 10 +- 17 15 +- 11 1 7825 22 May 05 04:59 LAG1 15 0 8 2 +- 11 3 +- 5 1 7825 22 May 05 08:25 LAG1 13 0 12 -10 +- 11 6 +- 12 2 7825 22 May 05 11:39 LAG1 17 0 18 -9 +- 10 9 +- 5 5 7825 22 May 05 15:13 LAG1 18 0 9 2 +- 9 6 +- 7 3 7825 22 May 05 16:51 LAG2 18 0 13 12 +- 10 -3 +- 7 5 7825 22 May 05 21:23 LAG2 15 0 7 8 +- 17 -6 +- 14 4 7825 23 May 05 00:21 LAG1 6 0 15 16 +- 26 -7 +- 49 5 7825 23 May 05 01:47 LAG2 8 1 19 13 +- 64 3 +- 41 3 7825 23 May 05 03:45 LAG1 9 0 20 -4 +- 14 -12 +- 9 3 7825 23 May 05 07:09 LAG1 13 0 19 -7 +- 11 -16 +- 12 2 7825 23 May 05 10:21 LAG1 17 0 26 -19 +- 10 -14 +- 7 1 7825 23 May 05 14:13 LAG1 6 2 7 -9 +- 117 10 +- 76 2 7825 24 May 05 12:37 LAG1 12 0 5 -1 +- 13 -2 +- 10 3 7825 24 May 05 17:05 LAG2 17 0 18 15 +- 10 6 +- 7 4 7825 24 May 05 21:29 LAG2 9 1 29 8 +- 18 -27 +- 22 10 7825 25 May 05 01:31 LAG2 25 0 6 4 +- 8 0 +- 4 3 7825 25 May 05 04:35 LAG1 15 1 11 -9 +- 12 -2 +- 9 2 7825 25 May 05 11:09 LAG1 9 0 23 -22 +- 14 3 +- 8 4 7825 25 May 05 14:35 LAG1 16 0 21 -11 +- 12 9 +- 8 3 7825 25 May 05 19:19 LAG2 14 0 27 23 +- 17 -3 +- 14 2 7825 25 May 05 23:49 LAG2 13 0 3 1 +- 13 0 +- 13 3 7825 26 May 05 03:00 LAG1 18 0 6 0 +- 10 -1 +- 6 6 7825 26 May 05 03:38 LAG2 9 0 9 1 +- 47 6 +- 31 3 7825 26 May 05 06:35 LAG1 14 0 4 0 +- 11 -3 +- 10 2 7825 26 May 05 10:07 LAG1 5 1 46 -154 +- 229 57 +- 119 4 7825 26 May 05 13:09 LAG1 16 0 19 -17 +- 10 -2 +- 5 7 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 21 May 05 21:39 LAG2 10 0 26 13 +- 25 -12 +- 18 1 7832 22 May 05 18:51 LAG1 4 0 5 0 +- 42 -19 +- 186 2 7832 22 May 05 19:53 LAG2 10 0 10 -7 +- 21 -7 +- 19 1 7832 22 May 05 22:09 LAG1 12 0 7 0 +- 24 -4 +- 16 4 7832 23 May 05 08:39 LAG1 3 0 18 64 +- 743 -34 +- 313 2 7832 24 May 05 15:51 LAG2 7 0 11 -13 +- 42 -6 +- 70 3 7832 24 May 05 19:27 LAG1 8 0 9 18 +- 48 14 +- 45 2 7832 24 May 05 19:59 LAG2 7 0 7 -17 +- 145 -12 +- 79 1 7832 24 May 05 23:05 LAG1 10 0 10 -10 +- 21 3 +- 22 2 7832 25 May 05 00:13 LAG2 6 0 8 -9 +- 32 -19 +- 93 2 7832 25 May 05 14:06 LAG2 2 0 15 30 +- 365 -16 +- 392 0 7832 25 May 05 18:07 LAG2 7 0 4 -11 +- 71 -11 +- 73 2 7832 26 May 05 08:05 LAG1 5 0 12 -33 +- 327 8 +- 131 2 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 19 May 05 20:57 LAG2 7 0 5 19 +- 356 7 +- 158 2 7835 20 May 05 02:07 LAG1 10 0 7 19 +- 117 6 +- 51 1 7835 24 May 05 19:33 LAG2 18 0 10 -8 +- 23 -5 +- 15 3 7835 24 May 05 22:47 LAG1 17 0 15 6 +- 24 10 +- 15 2 7835 26 May 05 19:47 LAG2 2 0 27 59 +-4300 14 +-1859 0 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 19 May 05 17:59 LAG2 17 0 7 -4 +- 26 -3 +- 25 2 7838 20 May 05 07:37 LAG2 19 0 37 36 +- 22 7 +- 15 3 7838 20 May 05 11:49 LAG2 24 0 31 26 +- 19 11 +- 13 5 7838 20 May 05 13:47 LAG1 20 0 25 23 +- 21 -4 +- 15 6 7838 20 May 05 15:58 LAG2 10 0 27 30 +- 39 3 +- 24 6 7838 20 May 05 17:25 LAG1 17 0 40 39 +- 23 -11 +- 15 6 7838 23 May 05 01:07 LAG1 6 0 77 143 +- 95 -55 +- 62 21 7838 25 May 05 02:07 LAG1 6 0 44 33 +- 458 4 +- 173 5 7838 25 May 05 06:07 LAG2 23 0 29 26 +- 20 4 +- 10 7 7838 25 May 05 14:56 LAG2 12 0 37 47 +- 94 -5 +- 48 4 7838 25 May 05 17:33 LAG1 18 0 34 33 +- 22 0 +- 14 6 7838 26 May 05 00:39 LAG1 7 0 49 67 +- 156 -10 +- 80 11 7838 26 May 05 04:19 LAG2 17 0 62 58 +- 23 29 +- 19 7 7838 26 May 05 08:41 LAG2 11 0 37 55 +- 62 -17 +- 45 10 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 21 May 05 21:09 LAG2 26 0 9 7 +- 12 0 +- 7 6 7840 21 May 05 23:23 LAG1 15 0 15 -15 +- 17 -1 +- 10 2 7840 23 May 05 05:09 LAG1 17 0 17 9 +- 16 -10 +- 10 4 7840 23 May 05 08:41 LAG1 13 0 31 -2 +- 20 -18 +- 12 6 7840 23 May 05 12:17 LAG1 10 0 10 3 +- 22 -12 +- 25 2 7840 23 May 05 13:35 LAG2 5 0 12 -8 +- 50 4 +- 60 6 7840 23 May 05 17:21 LAG2 14 0 17 -3 +- 25 9 +- 17 1 7840 25 May 05 13:07 LAG1 6 0 3 3 +- 32 4 +- 70 1 7840 25 May 05 13:45 LAG2 14 0 14 13 +- 17 2 +- 18 3 7840 25 May 05 17:47 LAG2 4 0 4 10 +- 111 14 +- 119 0 7840 25 May 05 21:53 LAG2 14 0 12 8 +- 21 -10 +- 15 3 7840 26 May 05 01:19 LAG1 6 0 7 8 +- 33 -8 +- 44 2 7840 26 May 05 08:31 LAG1 3 0 26 74 +- 796 -42 +- 336 3 7840 26 May 05 15:55 LAG2 12 0 21 6 +- 23 10 +- 15 2 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 19 May 05 00:02 LAG1 15 0 12 9 +- 11 1 +- 7 5 7841 19 May 05 21:13 LAG2 5 0 6 10 +- 52 8 +- 50 4 7841 19 May 05 22:51 LAG1 10 0 3 2 +- 26 0 +- 19 3 7841 20 May 05 02:09 LAG1 15 0 8 -3 +- 11 3 +- 7 2 7841 20 May 05 05:45 LAG1 14 0 8 -4 +- 13 6 +- 9 3 7841 21 May 05 00:49 LAG1 5 1 38 -64 +- 168 -57 +- 96 6 7841 21 May 05 04:19 LAG1 11 0 13 -4 +- 15 -11 +- 12 6 7841 24 May 05 19:39 LAG2 21 0 10 -9 +- 9 0 +- 5 4 7841 25 May 05 21:49 LAG1 4 0 9 -17 +- 147 7 +- 111 6 7841 26 May 05 01:03 LAG1 7 0 11 8 +- 47 5 +- 28 11 Station 7848 (Ajaccio) (position solved, acc. 30 mm) 7848 20 May 05 19:35 LAG2 3 0 5 -34 +- 367 24 +- 254 0 7848 24 May 05 07:18 LAG1 7 0 15 -12 +- 36 9 +- 56 5 7848 24 May 05 19:46 LAG2 12 0 5 -3 +- 29 3 +- 30 4 7848 25 May 05 09:31 LAG1 3 0 3 1 +- 75 -6 +- 214 2 7848 25 May 05 17:51 LAG2 11 0 9 0 +- 32 9 +- 34 2 7848 25 May 05 21:55 LAG2 4 0 5 -23 +- 240 -20 +- 183 1 7848 26 May 05 01:29 LAG1 4 0 10 21 +- 180 -16 +- 106 3 7848 26 May 05 19:57 LAG2 14 0 7 4 +- 25 -3 +- 24 4 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 19 May 05 00:03 LAG1 14 0 7 -2 +- 11 -2 +- 5 3 7941 19 May 05 17:15 LAG2 8 0 10 -13 +- 22 9 +- 13 2 7941 20 May 05 09:23 LAG1 7 0 16 -10 +- 83 11 +- 38 7 7941 20 May 05 15:17 LAG2 15 0 6 3 +- 17 0 +- 9 5 7941 20 May 05 19:07 LAG2 19 0 6 1 +- 9 0 +- 6 6 7941 20 May 05 21:21 LAG1 6 0 18 19 +- 18 -4 +- 13 2 7941 20 May 05 23:35 LAG2 11 0 5 9 +- 21 -5 +- 16 1 7941 21 May 05 13:19 LAG2 17 0 12 11 +- 11 1 +- 8 3 7941 21 May 05 17:27 LAG2 17 0 12 -9 +- 15 11 +- 10 4 7941 21 May 05 21:19 LAG2 16 0 22 18 +- 10 3 +- 4 3 7941 21 May 05 23:25 LAG1 24 0 11 8 +- 8 2 +- 4 4 7941 22 May 05 01:30 LAG2 3 0 16 -9 +- 145 -28 +- 163 0 7941 22 May 05 06:40 LAG1 6 0 11 -25 +- 59 20 +- 39 5 7941 22 May 05 15:36 LAG2 10 0 21 -17 +- 30 -2 +- 19 2 7941 22 May 05 19:21 LAG2 3 0 14 -142 +- 771 -68 +- 339 1 7941 22 May 05 22:19 LAG1 14 0 6 -9 +- 16 4 +- 11 1 7941 22 May 05 23:33 LAG2 12 0 18 -9 +- 12 -7 +- 6 0 7941 23 May 05 01:37 LAG1 1 0 19 0 +- 0 0 +- 0 0 7941 23 May 05 17:51 LAG2 10 0 9 -13 +- 41 3 +- 25 3 7941 23 May 05 20:48 LAG1 8 0 21 -19 +- 16 4 +- 33 2 7941 25 May 05 13:51 LAG2 11 0 8 11 +- 16 -4 +- 14 1 7941 25 May 05 17:55 LAG2 18 0 10 -14 +- 14 5 +- 9 1 7941 25 May 05 22:21 LAG2 14 6 6 -3 +- 94 -1 +- 45 0 7941 26 May 05 00:59 LAG1 9 0 8 -1 +- 14 -3 +- 5 3 7941 26 May 05 19:51 LAG2 13 0 8 -8 +- 12 -2 +- 7 2 7941 26 May 05 23:37 LAG1 9 0 10 -10 +- 71 0 +- 29 2 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 19 May 05 07:15 LAG1 6 0 9 -13 +- 38 3 +- 24 3 8834 19 May 05 21:01 LAG2 10 0 16 -17 +- 47 0 +- 25 3 8834 19 May 05 22:36 LAG1 8 0 15 -24 +- 36 -7 +- 27 3 8834 20 May 05 01:05 LAG2 11 0 15 -10 +- 12 -10 +- 12 3 8834 20 May 05 02:11 LAG1 9 0 9 -8 +- 28 0 +- 18 3 8834 20 May 05 09:25 LAG1 8 0 7 -4 +- 55 -1 +- 27 2 8834 20 May 05 13:01 LAG1 8 0 5 11 +- 43 -6 +- 34 2 8834 20 May 05 15:02 LAG2 24 0 8 -4 +- 8 -2 +- 5 5 8834 20 May 05 19:15 LAG2 14 0 11 -12 +- 13 1 +- 7 3 8834 20 May 05 21:19 LAG1 4 0 14 -19 +- 61 -8 +- 113 1 8834 20 May 05 23:28 LAG2 6 0 25 -18 +- 22 -11 +- 29 3 8834 21 May 05 00:53 LAG1 6 0 19 -16 +- 45 -23 +- 31 2 8834 21 May 05 04:29 LAG1 7 0 5 1 +- 20 -2 +- 14 4 8834 21 May 05 08:01 LAG1 3 0 17 -2 +- 85 -20 +- 115 2 8834 21 May 05 11:30 LAG1 12 0 24 9 +- 25 -17 +- 14 4 8834 21 May 05 13:41 LAG2 5 0 8 -19 +- 92 8 +- 65 3 8834 21 May 05 17:19 LAG2 19 0 12 -10 +- 10 7 +- 6 2 8834 22 May 05 15:53 LAG2 3 0 18 -144 +- 632 59 +- 294 3 8834 24 May 05 07:27 LAG1 10 0 14 -31 +- 30 17 +- 17 4 8834 24 May 05 11:07 LAG1 6 0 15 34 +- 116 -9 +- 55 3 8834 24 May 05 15:37 LAG2 13 0 5 0 +- 11 0 +- 6 5 8834 24 May 05 19:37 LAG2 20 0 12 -10 +- 9 -4 +- 5 3 8834 24 May 05 23:23 LAG1 3 0 17 77 +- 536 -26 +- 232 3 8834 24 May 05 23:40 LAG2 6 0 20 -8 +- 76 -19 +- 51 2 8834 25 May 05 02:25 LAG1 9 0 11 8 +- 26 -1 +- 17 2 8834 25 May 05 06:12 LAG1 5 0 3 -2 +- 87 2 +- 49 2 8834 25 May 05 09:39 LAG1 10 0 6 -13 +- 46 4 +- 20 4 8834 25 May 05 17:47 LAG2 20 0 9 -2 +- 10 6 +- 6 1 8834 25 May 05 21:23 LAG1 3 0 22 -162 +- 463 -82 +- 267 8 8834 25 May 05 22:04 LAG2 5 0 4 5 +- 30 -8 +- 45 2 8834 26 May 05 01:01 LAG1 6 0 17 19 +- 103 1 +- 47 1 8834 26 May 05 01:57 LAG2 4 0 2 2 +- 32 -8 +- 88 1 8834 26 May 05 04:33 LAG1 6 0 6 0 +- 17 2 +- 9 5 8834 26 May 05 08:11 LAG1 5 0 26 -30 +- 27 4 +- 19 2 8834 26 May 05 15:51 LAG2 12 0 13 3 +- 12 9 +- 8 3 8834 26 May 05 19:49 LAG2 9 0 12 -3 +- 21 -8 +- 11 1 8834 26 May 05 23:45 LAG1 7 0 16 -24 +- 31 -8 +- 26 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 - 050404 0/ 24/ 0 0/ 31/ 0 55 1831 LVIL 040815 - 050526 0/ 30/ 0 0/ 41/ 0 71 1864 MD2LAS 040701 - 050526 0/106/ 0 0/104/ 0 210 1873 SIMLAS 040703 - 050526 0/ 33/ 0 0/ 26/ 0 59 1884 RIGLAS 040712 - 050527 0/ 56/ 1 0/ 56/ 5 118 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 - 050527 241/137/ 23 136/135/ 23 695 7080 MLRS25 040701 - 050523 69/ 86/ 5 60/111/ 8 339 7090 ML0514 040716 - 050526 168/513/ 43 177/306/ 36 1243 7105 ML0725 040701 - 050518 0/ 89/ 5 9/125/ 9 237 7110 ML0414 040701 - 050523 113/166/ 23 83/183/ 24 592 7124 ML0819 040705 - 050525 0/ 49/ 0 0/ 15/ 0 64 7231 WUHA01 040701 - 041208 0/ 8/ 0 0/ 20/ 0 28 7237 CHALAS 040702 - 050526 0/172/ 1 0/200/ 1 374 7249 BEJLAS 040701 - 050518 0/117/ 0 0/153/ 0 270 7308 CRLLAS 041201 - 050510 9/ 11/ 2 3/ 16/ 0 41 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 - 050526 26/ 71/ 4 68/ 88/ 7 264 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 - 050527 271/163/ 29 155/153/ 25 796 7811 POLLAS 040706 - 050524 0/ 69/ 0 0/ 92/ 0 161 7824 SPNLAS 040701 - 050527 1/123/ 0 0/143/ 3 270 7825 STL3 040807 - 050526 217/335/ 44 227/187/ 33 1043 7832 SALRO 040702 - 050526 154/272/ 21 207/333/ 33 1020 7835 GRASSE 040702 - 050526 0/ 57/ 2 0/ 57/ 3 119 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 - 050526 81/139/ 4 89/185/ 10 508 7839 AUSLAS 040701 - 050513 235/187/ 32 102/193/ 28 777 7840 RGOLAS 040701 - 050527 202/131/ 27 101/143/ 22 626 7841 GFZLA3 040702 - 050526 65/ 86/ 19 29/113/ 15 327 7845 GRASLL 040705 - 040920 11/ 14/ 0 3/ 12/ 1 41 7848 FTLR06 050515 - 050527 2/ 4/ 0 1/ 4/ 0 11 7941 MLROnn 040701 - 050527 101/ 85/ 11 98/116/ 14 425 8834 WLRS01 040701 - 050527 282/177/ 32 168/207/ 28 894 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050520.0 -70.0 +/- 0.1 328.9 +/- 0.1 -32670.68 +/- 0.01 050521.0 -70.4 +/- 0.1 330.7 +/- 0.1 -32671.59 +/- 0.02 050522.0 -71.1 +/- 0.1 332.0 +/- 0.1 -32672.41 +/- 0.03 050523.0 -71.8 +/- 0.1 334.2 +/- 0.1 -32672.95 +/- 0.04 050524.0 -71.3 +/- 0.1 335.9 +/- 0.1 -32673.23 +/- 0.04 050525.0 -71.5 +/- 0.1 337.8 +/- 0.1 -32673.00 +/- 0.05 050526.0 -70.6 +/- 0.1 339.3 +/- 0.1 -32672.76 +/- 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 ******************************************************************************** |