| Date: | 2005-06-28 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5553: Delft QL Report June 28, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-06-28 13:15:00 UTC Message No. 5553 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report June 28, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS June 28, 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, Jun 28, 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, Jun 28, 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 050627 - 050627 1 - 1864 Maidanak, Uzbekistan (site 2) 050624 - 050626 2 2 1873 Simeiz, Crimea, Ukraine 050626 - 050627 1 - 6810 Zimmerwald 846, Switzerland 050626 - 050628 9 5 7090 Yarragadee, Australia 050626 - 050626 3 3 7110 Monument Peak, California 050626 - 050626 1 - 7355 Urumqi, China (TROS) 050627 - 050627 1 1 7501 Hartebeesthoek, SA (MOB-6) 050626 - 050626 2 1 7810 Zimmerwald 423, Switzerland 050626 - 050628 9 5 7811 Borowiec, Poland 050624 - 050627 2 - 7824 San Fernando, Spain 050627 - 050627 1 - 7825 Mount Stromlo, Australia 050626 - 050627 3 3 7832 Riyad, Saudi Arabia 050626 - 050627 3 3 7839 Graz, Austria 050624 - 050627 4 3 7840 Herstmonceux, United Kingdom 050626 - 050627 3 4 7848 Ajaccio, Corsica (FTLRS) 050626 - 050627 2 - 7941 Matera, Italy (MLRO 532) 050626 - 050626 - 1 8834 Wettzell, Germany 050625 - 050628 6 6 ------ ------ --- --- TOTAL 050624 - 050628 53 37 ------------------------------------------------------------------------------ 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, Jun 20, 2005 to Tue, Jun 28, 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 21 Number of Passes 221/215 152/146 Number of Normal Points 2343/2274 1705/1654 Weighted RMS of Fit (mm) 16 13 ----------------------------------------------------------------------- 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 20 Jun 05 20:56 LAG2 5 0 59 -58 +- 571 85 +-1146 9 1831 20 Jun 05 21:23 LAG1 7 0 83 95 +- 521 50 +- 683 10 1831 21 Jun 05 23:34 LAG1 7 0 101 -102 +- 488 -3 +- 607 10 1831 23 Jun 05 20:55 LAG1 6 0 88 56 +- 716 52 +- 952 5 1831 25 Jun 05 21:48 LAG1 5 0 86 19 +-1467 51 +-1147 14 1831 27 Jun 05 22:29 LAG1 10 0 405 -474 +- 448 183 +- 385 37 Station 1864 (Maidanak) (position fixed, acc. 200 mm) 1864 20 Jun 05 17:53 LAG1 7 0 43 41 +- 329 -6 +- 277 23 1864 21 Jun 05 19:53 LAG1 11 0 34 30 +- 183 1 +- 113 15 1864 22 Jun 05 17:21 LAG2 11 0 21 -5 +- 183 0 +- 127 21 1864 22 Jun 05 18:33 LAG1 8 0 25 -2 +- 212 13 +- 150 17 1864 23 Jun 05 17:11 LAG1 4 0 30 -40 +-1042 -71 +-1201 15 1864 23 Jun 05 20:41 LAG1 14 0 41 18 +- 165 10 +- 109 31 1864 24 Jun 05 17:39 LAG2 8 0 106 28 +- 212 24 +- 260 101 1864 25 Jun 05 17:53 LAG1 10 0 62 43 +- 191 -5 +- 126 43 1864 26 Jun 05 16:45 LAG1 5 1 96 160 +- 703 -129 +-1043 36 1864 26 Jun 05 17:50 LAG2 4 0 64 86 +- 975 54 +-1089 47 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 26 Jun 05 23:49 LAG1 10 0 171 171 +- 213 -6 +- 201 33 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 20 Jun 05 17:08 LAG2 6 0 40 -58 +- 653 10 +- 362 5 1884 20 Jun 05 21:13 LAG1 16 0 6 2 +- 75 0 +- 56 5 1884 21 Jun 05 23:29 LAG1 14 0 6 -1 +- 83 3 +- 57 3 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 20 Jun 05 02:07 LAG1 23 0 13 -9 +- 38 -5 +- 20 3 6810 20 Jun 05 05:44 LAG1 12 0 25 -26 +- 56 2 +- 40 2 6810 20 Jun 05 09:45 LAG1 4 0 22 91 +-4718 -39 +-1619 1 6810 20 Jun 05 12:23 LAG2 18 0 24 -23 +- 43 3 +- 22 2 6810 20 Jun 05 16:44 LAG2 20 0 27 -25 +- 48 -1 +- 30 2 6810 20 Jun 05 20:37 LAG2 23 0 26 -20 +- 38 -10 +- 24 3 6810 20 Jun 05 21:09 LAG1 10 0 28 -28 +- 59 0 +- 27 5 6810 21 Jun 05 00:43 LAG1 22 0 15 -15 +- 41 -3 +- 21 4 6810 21 Jun 05 04:21 LAG1 6 0 17 -17 +- 76 -2 +- 41 2 6810 21 Jun 05 07:37 LAG1 18 0 31 -23 +- 48 -6 +- 24 3 6810 21 Jun 05 10:39 LAG2 14 0 17 -16 +- 49 -5 +- 35 2 6810 21 Jun 05 11:23 LAG1 6 0 11 10 +- 74 -2 +- 50 3 6810 21 Jun 05 15:01 LAG2 3 0 12 -18 +- 172 13 +- 154 4 6810 21 Jun 05 18:51 LAG2 19 0 21 -21 +- 43 1 +- 27 4 6810 21 Jun 05 23:07 LAG2 4 0 30 -23 +- 256 -7 +- 252 1 6810 21 Jun 05 23:21 LAG1 19 0 24 -23 +- 44 0 +- 18 8 6810 22 Jun 05 02:55 LAG1 21 0 18 -17 +- 40 1 +- 23 3 6810 22 Jun 05 06:33 LAG1 14 0 30 -25 +- 60 -4 +- 36 2 6810 22 Jun 05 08:51 LAG2 11 0 10 -14 +- 79 -9 +- 80 4 6810 22 Jun 05 09:47 LAG1 21 0 14 3 +- 41 -6 +- 24 7 6810 22 Jun 05 21:21 LAG2 4 0 38 -44 +- 356 3 +- 196 8 6810 22 Jun 05 22:01 LAG1 12 0 36 -32 +- 53 5 +- 23 6 6810 23 Jun 05 01:35 LAG1 16 0 15 -10 +- 51 4 +- 29 4 6810 23 Jun 05 05:09 LAG1 8 0 12 9 +- 68 2 +- 41 6 6810 23 Jun 05 08:22 LAG1 13 0 21 -21 +- 53 -1 +- 24 6 6810 23 Jun 05 10:51 LAG2 14 0 7 -3 +- 50 1 +- 26 6 6810 23 Jun 05 12:11 LAG1 16 0 13 -10 +- 45 -9 +- 52 4 6810 23 Jun 05 19:31 LAG2 10 0 28 -26 +- 392 0 +- 170 3 6810 23 Jun 05 20:50 LAG1 9 0 49 -51 +- 78 4 +- 64 9 6810 24 Jun 05 03:45 LAG1 7 0 9 6 +- 75 7 +- 60 4 6810 24 Jun 05 07:21 LAG1 15 0 37 -23 +- 66 -9 +- 37 4 6810 24 Jun 05 09:01 LAG2 13 0 13 -13 +- 63 0 +- 56 4 6810 24 Jun 05 10:49 LAG1 12 0 20 -11 +- 52 -14 +- 48 5 6810 24 Jun 05 12:55 LAG2 15 0 18 -16 +- 58 -1 +- 30 3 6810 25 Jun 05 19:15 LAG2 17 0 28 -16 +- 46 -9 +- 22 2 6810 25 Jun 05 21:23 LAG1 13 0 26 -21 +- 51 -8 +- 34 4 6810 26 Jun 05 00:57 LAG1 3 0 18 -106 +-1808 -31 +- 648 0 6810 26 Jun 05 04:35 LAG1 17 0 8 -7 +- 46 -1 +- 31 3 6810 26 Jun 05 07:49 LAG1 21 0 37 -21 +- 41 -11 +- 19 6 6810 26 Jun 05 09:13 LAG2 13 0 10 6 +- 50 -3 +- 34 4 6810 26 Jun 05 11:33 LAG1 14 0 31 -10 +- 48 -24 +- 41 8 6810 26 Jun 05 13:05 LAG2 15 0 14 -14 +- 50 2 +- 23 4 6810 26 Jun 05 17:23 LAG2 22 0 15 -15 +- 41 0 +- 25 3 6810 26 Jun 05 20:09 LAG1 17 0 15 -12 +- 44 -6 +- 40 3 6810 26 Jun 05 21:17 LAG2 12 0 22 -26 +- 93 -4 +- 72 2 6810 26 Jun 05 23:35 LAG1 21 0 29 -27 +- 39 3 +- 17 3 6810 27 Jun 05 03:09 LAG1 18 0 36 -27 +- 44 11 +- 28 3 6810 27 Jun 05 06:47 LAG1 16 0 21 -22 +- 63 0 +- 35 2 6810 27 Jun 05 10:00 LAG1 23 0 17 -9 +- 38 -5 +- 21 9 6810 27 Jun 05 11:13 LAG2 16 0 19 -10 +- 45 -7 +- 23 4 6810 27 Jun 05 22:33 LAG1 16 0 27 -26 +- 63 0 +- 34 5 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 20 Jun 05 00:19 LAG2 20 0 7 -6 +- 9 1 +- 7 3 7090 20 Jun 05 14:06 LAG2 5 0 26 -24 +- 19 7 +- 27 0 7090 20 Jun 05 14:37 LAG1 5 0 20 5 +- 57 19 +- 44 1 7090 20 Jun 05 18:49 LAG2 2 0 19 915 +-4113 -413 +-1820 0 7090 20 Jun 05 22:13 LAG2 24 0 6 5 +- 8 -1 +- 6 3 7090 21 Jun 05 02:31 LAG2 10 0 22 -22 +- 27 0 +- 21 4 7090 21 Jun 05 03:13 LAG1 6 0 19 -24 +- 30 -7 +- 33 1 7090 21 Jun 05 06:41 LAG1 9 0 8 0 +- 14 -9 +- 18 4 7090 21 Jun 05 20:10 LAG2 19 0 22 14 +- 10 -10 +- 8 3 7090 22 Jun 05 00:47 LAG2 10 0 15 4 +- 13 15 +- 15 2 7090 22 Jun 05 05:21 LAG1 11 0 25 -20 +- 13 -8 +- 11 3 7090 22 Jun 05 08:49 LAG1 6 0 17 -18 +- 28 0 +- 44 2 7090 22 Jun 05 11:49 LAG1 17 0 31 -24 +- 10 12 +- 7 4 7090 23 Jun 05 13:57 LAG1 11 0 16 -8 +- 14 6 +- 8 4 7090 23 Jun 05 16:41 LAG2 10 0 11 14 +- 38 -11 +- 20 3 7090 23 Jun 05 20:26 LAG2 22 0 6 -5 +- 9 -3 +- 8 2 7090 24 Jun 05 09:39 LAG1 4 0 29 -9 +- 109 -19 +- 106 1 7090 24 Jun 05 12:35 LAG1 19 0 10 -10 +- 10 2 +- 5 4 7090 24 Jun 05 14:19 LAG2 22 0 8 2 +- 9 4 +- 5 3 7090 24 Jun 05 16:07 LAG1 19 0 13 -5 +- 9 9 +- 7 3 7090 24 Jun 05 18:27 LAG2 23 0 10 6 +- 8 -6 +- 7 2 7090 24 Jun 05 22:48 LAG2 21 0 9 6 +- 9 6 +- 7 1 7090 25 Jun 05 03:03 LAG2 8 0 10 3 +- 22 15 +- 28 3 7090 25 Jun 05 04:45 LAG1 13 0 21 -20 +- 12 7 +- 8 6 7090 25 Jun 05 11:21 LAG1 7 0 17 -11 +- 33 6 +- 31 1 7090 25 Jun 05 12:42 LAG2 11 0 4 2 +- 12 3 +- 24 1 7090 25 Jun 05 14:49 LAG1 18 0 20 -12 +- 10 12 +- 5 3 7090 25 Jun 05 16:25 LAG2 19 0 11 0 +- 9 -6 +- 5 2 7090 25 Jun 05 20:47 LAG2 20 0 13 7 +- 9 -9 +- 8 4 7090 26 Jun 05 03:23 LAG1 7 0 20 -26 +- 20 -12 +- 17 4 7090 26 Jun 05 10:21 LAG1 5 0 12 -13 +- 65 1 +- 63 0 7090 26 Jun 05 13:15 LAG1 20 0 7 -5 +- 9 0 +- 4 3 7090 26 Jun 05 14:31 LAG2 14 0 5 0 +- 13 2 +- 10 4 7090 26 Jun 05 17:05 LAG1 8 0 8 -6 +- 14 1 +- 24 4 7090 26 Jun 05 19:01 LAG2 13 0 6 7 +- 19 -6 +- 13 2 7090 26 Jun 05 22:59 LAG2 16 0 5 6 +- 16 4 +- 12 3 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 22 Jun 05 02:37 LAG2 6 0 8 -7 +- 17 0 +- 23 5 7105 22 Jun 05 03:47 LAG1 3 0 17 -5 +- 114 22 +- 112 1 7105 23 Jun 05 22:59 LAG2 4 0 45 -51 +- 86 4 +- 63 3 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 21 Jun 05 08:49 LAG1 6 0 14 19 +- 29 -6 +- 30 1 7110 22 Jun 05 06:17 LAG2 8 0 14 -5 +- 37 -14 +- 30 3 7110 23 Jun 05 04:27 LAG2 10 0 11 10 +- 13 6 +- 10 3 7110 23 Jun 05 06:04 LAG1 11 0 21 30 +- 23 -8 +- 14 5 7110 23 Jun 05 09:27 LAG1 5 0 16 20 +- 40 5 +- 42 3 7110 23 Jun 05 13:01 LAG1 2 0 26 1 +- 705 -32 +- 815 0 7110 24 Jun 05 04:39 LAG1 8 0 56 51 +- 19 10 +- 29 4 7110 24 Jun 05 06:31 LAG2 7 0 2 5 +- 46 4 +- 41 1 7110 24 Jun 05 08:05 LAG1 10 0 12 0 +- 14 -10 +- 13 5 7110 24 Jun 05 11:30 LAG1 6 0 10 8 +- 17 -9 +- 22 3 7110 25 Jun 05 04:45 LAG2 10 0 11 9 +- 13 3 +- 11 2 7110 25 Jun 05 07:11 LAG1 3 0 11 270 +- 942 -98 +- 355 2 7110 25 Jun 05 10:29 LAG1 4 0 9 4 +- 135 3 +- 92 2 7110 26 Jun 05 15:49 LAG1 6 0 5 -2 +- 70 3 +- 37 3 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 20 Jun 05 07:02 LAG1 3 0 16 -16 +- 217 -18 +- 124 2 7124 21 Jun 05 12:59 LAG2 6 0 3 -8 +- 49 8 +- 72 1 7124 22 Jun 05 07:45 LAG1 19 0 37 6 +- 9 -20 +- 5 2 7124 22 Jun 05 10:55 LAG2 6 0 7 4 +- 33 -15 +- 48 1 Station 7355 (Urumqi) (position solved, acc. 10 mm) 7355 21 Jun 05 19:55 LAG1 9 2 51 76 +- 37 -21 +- 26 5 7355 23 Jun 05 17:11 LAG1 8 1 8 0 +- 20 4 +- 23 7 7355 23 Jun 05 20:43 LAG1 10 0 11 -9 +- 25 1 +- 16 6 7355 27 Jun 05 16:13 LAG2 6 0 18 -15 +- 43 11 +- 48 16 7355 27 Jun 05 18:49 LAG1 9 3 14 -25 +- 37 24 +- 31 6 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 20 Jun 05 00:07 LAG2 3 0 7 18 +-1106 -5 +- 504 0 7501 20 Jun 05 03:45 LAG2 24 0 11 -5 +- 8 9 +- 7 2 7501 20 Jun 05 07:51 LAG2 14 0 22 12 +- 29 -5 +- 17 4 7501 20 Jun 05 18:30 LAG1 14 0 27 21 +- 14 5 +- 9 3 7501 20 Jun 05 21:23 LAG2 23 0 7 6 +- 8 0 +- 4 2 7501 20 Jun 05 22:27 LAG1 5 0 10 48 +- 372 -27 +- 175 1 7501 21 Jun 05 01:52 LAG2 6 0 26 -23 +- 17 19 +- 47 3 7501 21 Jun 05 10:47 LAG1 4 0 12 10 +- 28 3 +- 55 5 7501 21 Jun 05 20:35 LAG1 7 0 12 14 +- 17 4 +- 15 2 7501 22 Jun 05 00:23 LAG2 2 0 50 -308 +-3398 169 +-1606 0 7501 22 Jun 05 03:59 LAG2 7 0 22 27 +- 91 37 +- 68 2 7501 22 Jun 05 19:29 LAG1 12 0 29 31 +- 30 -1 +- 14 2 7501 24 Jun 05 08:22 LAG2 11 0 11 15 +- 21 14 +- 17 2 7501 25 Jun 05 18:39 LAG1 20 0 23 22 +- 9 0 +- 5 5 7501 25 Jun 05 19:59 LAG2 11 0 17 17 +- 13 0 +- 7 2 7501 26 Jun 05 17:23 LAG1 9 0 9 12 +- 20 5 +- 24 1 7501 26 Jun 05 20:43 LAG1 17 0 22 21 +- 11 0 +- 7 2 7501 26 Jun 05 22:03 LAG2 2 0 19 -274 +-3442 -109 +-1471 0 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 20 Jun 05 02:09 LAG1 21 0 10 -4 +- 39 -5 +- 22 2 7810 20 Jun 05 05:45 LAG1 11 0 23 -23 +- 57 3 +- 46 2 7810 20 Jun 05 09:45 LAG1 3 0 5 100 +-6385 -36 +-2206 1 7810 20 Jun 05 12:23 LAG2 18 0 14 -11 +- 43 4 +- 22 3 7810 20 Jun 05 16:47 LAG2 17 0 18 -16 +- 53 -2 +- 36 2 7810 20 Jun 05 20:37 LAG2 24 0 21 -11 +- 37 -11 +- 23 2 7810 20 Jun 05 21:19 LAG1 5 0 18 -18 +- 84 0 +- 43 3 7810 21 Jun 05 00:47 LAG1 19 0 8 -6 +- 44 -4 +- 24 4 7810 21 Jun 05 04:25 LAG1 4 0 7 -7 +- 95 0 +- 63 1 7810 21 Jun 05 07:55 LAG1 16 0 23 -15 +- 67 -5 +- 35 2 7810 21 Jun 05 10:37 LAG2 14 0 8 -3 +- 50 -4 +- 35 5 7810 21 Jun 05 11:23 LAG1 3 0 26 -3 +- 912 -22 +- 686 1 7810 21 Jun 05 15:01 LAG2 2 0 2 12 +- 586 -27 +-1396 0 7810 21 Jun 05 18:50 LAG2 15 0 10 -10 +- 47 0 +- 33 3 7810 21 Jun 05 23:06 LAG2 3 0 20 -22 +- 497 2 +- 665 2 7810 21 Jun 05 23:21 LAG1 18 0 14 -11 +- 47 0 +- 20 8 7810 22 Jun 05 02:55 LAG1 20 0 12 -9 +- 41 2 +- 24 4 7810 22 Jun 05 06:33 LAG1 14 0 27 -24 +- 60 -3 +- 36 2 7810 22 Jun 05 08:57 LAG2 7 0 6 -8 +- 104 -8 +- 138 2 7810 22 Jun 05 09:49 LAG1 20 0 20 10 +- 42 -8 +- 25 6 7810 22 Jun 05 22:03 LAG1 6 0 30 -11 +- 393 8 +- 179 3 7810 23 Jun 05 01:39 LAG1 13 0 6 2 +- 56 3 +- 36 4 7810 23 Jun 05 05:19 LAG1 3 0 34 32 +- 111 17 +- 587 2 7810 23 Jun 05 08:27 LAG1 9 0 12 -11 +- 67 -1 +- 32 7 7810 23 Jun 05 10:51 LAG2 10 0 11 6 +- 58 1 +- 28 8 7810 23 Jun 05 12:11 LAG1 13 0 9 2 +- 52 -5 +- 68 7 7810 23 Jun 05 20:59 LAG1 8 0 28 -28 +- 111 1 +- 123 4 7810 24 Jun 05 03:45 LAG1 8 0 14 14 +- 66 4 +- 54 3 7810 24 Jun 05 07:21 LAG1 16 0 30 -12 +- 66 -10 +- 35 4 7810 24 Jun 05 09:04 LAG2 11 0 7 1 +- 57 -1 +- 62 7 7810 24 Jun 05 10:49 LAG1 10 0 16 0 +- 57 -15 +- 55 3 7810 24 Jun 05 12:55 LAG2 14 0 6 -3 +- 58 -1 +- 31 4 7810 25 Jun 05 19:15 LAG2 14 0 19 -5 +- 49 -9 +- 26 2 7810 25 Jun 05 21:24 LAG1 13 0 20 -12 +- 55 -7 +- 39 2 7810 26 Jun 05 04:35 LAG1 16 0 7 6 +- 46 -1 +- 33 2 7810 26 Jun 05 07:51 LAG1 18 0 30 -12 +- 48 -10 +- 23 4 7810 26 Jun 05 09:13 LAG2 12 0 18 17 +- 55 -1 +- 39 5 7810 26 Jun 05 11:35 LAG1 13 0 30 0 +- 51 -25 +- 44 7 7810 26 Jun 05 13:05 LAG2 16 0 6 -2 +- 49 2 +- 22 4 7810 26 Jun 05 17:23 LAG2 21 0 3 0 +- 41 -1 +- 26 2 7810 26 Jun 05 20:10 LAG1 15 0 9 1 +- 52 -7 +- 46 3 7810 26 Jun 05 21:19 LAG2 10 0 6 -9 +- 116 -3 +- 94 1 7810 26 Jun 05 23:39 LAG1 20 0 16 -16 +- 41 2 +- 18 2 7810 27 Jun 05 03:13 LAG1 15 0 19 -13 +- 48 8 +- 36 3 7810 27 Jun 05 06:47 LAG1 16 0 12 -12 +- 63 0 +- 35 2 7810 27 Jun 05 10:05 LAG1 21 0 13 3 +- 40 -5 +- 23 9 7810 27 Jun 05 11:11 LAG2 18 0 15 5 +- 43 -6 +- 21 5 7810 27 Jun 05 22:35 LAG1 13 0 6 -2 +- 72 -2 +- 42 3 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 20 Jun 05 20:47 LAG2 14 0 15 12 +- 50 -6 +- 49 8 7811 20 Jun 05 21:19 LAG1 13 0 11 10 +- 50 -5 +- 47 2 7811 21 Jun 05 00:52 LAG1 14 0 24 23 +- 49 -6 +- 35 4 7811 22 Jun 05 22:07 LAG1 8 0 6 10 +- 116 7 +- 93 2 7811 24 Jun 05 00:29 LAG1 9 0 20 25 +- 96 -4 +- 72 3 7811 24 Jun 05 23:01 LAG1 11 0 18 8 +- 57 11 +- 49 4 7811 27 Jun 05 22:25 LAG1 13 0 12 12 +- 52 -2 +- 40 5 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 20 Jun 05 20:47 LAG2 11 0 46 46 +- 37 -8 +- 26 3 7824 20 Jun 05 21:37 LAG1 4 0 28 30 +- 144 3 +- 271 1 7824 22 Jun 05 22:25 LAG1 5 0 41 48 +- 111 11 +- 147 2 7824 25 Jun 05 22:11 LAG1 2 0 16 55 +-2777 -22 +-1599 0 7824 27 Jun 05 03:41 LAG1 3 0 44 37 +- 356 6 +- 360 0 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 20 Jun 05 00:37 LAG2 2 0 8 -25 +- 753 -13 +- 582 0 7825 22 Jun 05 08:17 LAG1 9 0 19 -34 +- 27 -17 +- 22 2 7825 22 Jun 05 11:37 LAG1 8 0 20 -25 +- 41 -2 +- 20 2 7825 23 Jun 05 16:37 LAG2 24 0 9 9 +- 8 -3 +- 6 2 7825 23 Jun 05 20:45 LAG2 25 0 13 13 +- 8 0 +- 5 2 7825 23 Jun 05 22:49 LAG1 9 0 3 0 +- 21 4 +- 28 1 7825 24 Jun 05 01:01 LAG2 14 0 18 16 +- 11 2 +- 10 6 7825 24 Jun 05 02:17 LAG1 20 0 16 -7 +- 9 -7 +- 5 7 7825 24 Jun 05 05:49 LAG1 13 0 21 7 +- 11 -21 +- 12 5 7825 24 Jun 05 09:01 LAG1 10 0 20 -3 +- 25 -15 +- 18 8 7825 24 Jun 05 10:59 LAG2 5 2 15 8 +- 26 -97 +- 157 1 7825 24 Jun 05 12:25 LAG1 20 0 14 -12 +- 9 -2 +- 4 5 7825 24 Jun 05 14:31 LAG2 22 0 8 6 +- 10 4 +- 6 5 7825 24 Jun 05 19:10 LAG2 8 1 33 33 +- 36 -12 +- 28 26 7825 24 Jun 05 23:15 LAG2 8 0 22 22 +- 15 5 +- 24 1 7825 25 Jun 05 00:55 LAG1 13 0 16 -15 +- 13 1 +- 7 4 7825 26 Jun 05 23:11 LAG2 23 0 12 7 +- 8 7 +- 6 2 7825 27 Jun 05 01:49 LAG1 15 0 8 -6 +- 10 -1 +- 7 4 7825 27 Jun 05 05:31 LAG1 7 0 6 2 +- 50 2 +- 37 1 7825 27 Jun 05 11:54 LAG1 19 0 15 -14 +- 9 0 +- 5 4 7825 27 Jun 05 13:07 LAG2 18 0 6 3 +- 11 2 +- 8 2 7825 27 Jun 05 17:07 LAG2 14 0 9 -5 +- 12 -8 +- 10 4 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 20 Jun 05 17:01 LAG2 16 0 5 -3 +- 19 -4 +- 15 2 7832 20 Jun 05 18:09 LAG1 6 0 11 11 +- 65 0 +- 69 1 7832 21 Jun 05 07:45 LAG1 7 0 4 -10 +- 95 7 +- 51 1 7832 21 Jun 05 15:25 LAG2 6 0 19 11 +- 67 9 +- 83 3 7832 21 Jun 05 19:21 LAG2 7 0 6 -2 +- 30 -9 +- 46 3 7832 21 Jun 05 20:03 LAG1 7 0 8 -13 +- 69 -11 +- 43 2 7832 21 Jun 05 23:43 LAG1 3 0 55 34 +- 61 49 +- 224 30 7832 22 Jun 05 06:25 LAG1 2 0 15 45 +- 534 -44 +- 396 0 7832 22 Jun 05 17:17 LAG2 15 0 6 -5 +- 17 -3 +- 12 2 7832 22 Jun 05 18:47 LAG1 10 0 4 0 +- 20 1 +- 24 4 7832 24 Jun 05 23:01 LAG1 12 0 5 2 +- 19 4 +- 20 2 7832 25 Jun 05 18:17 LAG1 9 0 12 13 +- 27 -2 +- 32 2 7832 26 Jun 05 07:59 LAG1 5 0 11 -10 +- 126 0 +- 84 2 7832 26 Jun 05 13:53 LAG2 5 0 10 -21 +- 72 27 +- 126 3 7832 26 Jun 05 20:19 LAG1 12 0 18 -9 +- 19 -12 +- 15 5 7832 27 Jun 05 06:43 LAG1 4 0 11 -10 +- 336 9 +- 151 2 7832 27 Jun 05 15:46 LAG2 11 0 15 -17 +- 45 -2 +- 32 4 7832 27 Jun 05 20:01 LAG2 7 0 20 19 +- 28 -6 +- 59 2 7832 27 Jun 05 22:21 LAG1 12 0 5 5 +- 25 3 +- 20 4 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 20 Jun 05 21:09 LAG2 1 0 21 0 +- 0 0 +- 0 0 7835 21 Jun 05 00:53 LAG1 14 0 8 4 +- 25 -3 +- 14 2 7835 21 Jun 05 23:43 LAG1 3 0 4 10 +- 175 7 +- 189 1 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 20 Jun 05 01:26 LAG1 6 0 31 31 +- 39 -5 +- 28 4 7838 25 Jun 05 08:04 LAG2 10 0 46 46 +- 31 -3 +- 44 9 7838 25 Jun 05 12:15 LAG2 7 0 37 53 +- 52 -25 +- 30 7 7838 25 Jun 05 14:07 LAG1 9 0 46 41 +- 71 -3 +- 43 2 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 20 Jun 05 09:05 LAG1 14 0 6 6 +- 11 1 +- 6 2 7839 20 Jun 05 12:33 LAG2 16 0 8 -5 +- 12 5 +- 6 2 7839 20 Jun 05 16:49 LAG2 12 0 12 -12 +- 12 0 +- 12 1 7839 21 Jun 05 04:17 LAG1 13 0 2 -2 +- 11 0 +- 7 1 7839 21 Jun 05 07:41 LAG1 13 0 13 -9 +- 11 -5 +- 6 1 7839 21 Jun 05 10:47 LAG2 13 0 6 0 +- 12 -4 +- 9 1 7839 21 Jun 05 14:57 LAG2 10 0 8 -7 +- 17 6 +- 10 1 7839 21 Jun 05 18:53 LAG2 20 0 7 -7 +- 9 1 +- 5 1 7839 21 Jun 05 19:55 LAG1 17 0 7 -7 +- 10 0 +- 8 1 7839 21 Jun 05 23:27 LAG1 23 0 7 -5 +- 9 -1 +- 4 1 7839 22 Jun 05 02:57 LAG1 17 0 2 0 +- 10 1 +- 7 1 7839 23 Jun 05 15:13 LAG2 3 0 4 -3 +- 52 4 +- 135 0 7839 24 Jun 05 07:05 LAG1 10 0 10 -8 +- 15 -7 +- 9 1 7839 24 Jun 05 09:03 LAG2 10 0 12 11 +- 13 -2 +- 11 2 7839 24 Jun 05 13:19 LAG2 15 0 1 1 +- 20 0 +- 11 0 7839 26 Jun 05 17:45 LAG2 9 0 2 0 +- 36 -1 +- 21 0 7839 26 Jun 05 20:09 LAG1 10 0 14 1 +- 13 -9 +- 9 1 7839 26 Jun 05 21:27 LAG2 6 0 11 -17 +- 40 -8 +- 51 1 7839 26 Jun 05 23:32 LAG1 13 0 15 -13 +- 12 2 +- 5 2 7839 27 Jun 05 06:59 LAG1 4 0 4 -7 +- 143 1 +- 76 0 7839 27 Jun 05 10:27 LAG1 5 0 15 24 +- 43 -10 +- 44 0 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 20 Jun 05 02:13 LAG1 10 0 21 12 +- 42 -5 +- 25 2 7840 21 Jun 05 11:29 LAG1 12 0 21 21 +- 19 -4 +- 18 3 7840 21 Jun 05 22:51 LAG2 4 0 12 -14 +- 42 -11 +- 78 0 7840 21 Jun 05 23:29 LAG1 15 0 6 1 +- 17 -2 +- 9 4 7840 22 Jun 05 03:03 LAG1 17 0 9 8 +- 16 -1 +- 10 3 7840 22 Jun 05 06:33 LAG1 13 0 8 -3 +- 18 -4 +- 13 1 7840 22 Jun 05 09:55 LAG1 16 0 19 14 +- 17 -5 +- 11 4 7840 22 Jun 05 12:43 LAG2 14 0 17 1 +- 17 9 +- 9 2 7840 22 Jun 05 16:59 LAG2 13 0 4 -2 +- 21 -1 +- 16 1 7840 22 Jun 05 20:50 LAG2 17 0 26 -18 +- 16 -11 +- 11 1 7840 22 Jun 05 22:03 LAG1 10 0 14 -12 +- 20 3 +- 11 3 7840 23 Jun 05 01:37 LAG1 18 0 9 7 +- 16 0 +- 9 5 7840 23 Jun 05 05:09 LAG1 12 0 33 32 +- 19 3 +- 12 6 7840 23 Jun 05 08:37 LAG1 18 0 7 5 +- 15 -1 +- 9 4 7840 23 Jun 05 11:21 LAG2 4 0 30 30 +- 242 0 +- 161 0 7840 23 Jun 05 15:13 LAG2 11 0 12 10 +- 50 1 +- 29 1 7840 23 Jun 05 19:03 LAG2 3 0 3 -19 +- 343 -14 +- 225 0 7840 23 Jun 05 20:57 LAG1 4 0 25 -31 +- 54 22 +- 153 2 7840 23 Jun 05 23:03 LAG2 10 0 9 8 +- 21 -11 +- 36 1 7840 24 Jun 05 00:14 LAG1 15 0 7 -5 +- 17 -2 +- 7 3 7840 24 Jun 05 03:49 LAG1 17 0 24 24 +- 16 0 +- 10 3 7840 24 Jun 05 07:23 LAG1 12 0 16 6 +- 23 -11 +- 14 2 7840 24 Jun 05 11:01 LAG1 10 0 13 9 +- 31 -16 +- 28 2 7840 24 Jun 05 13:29 LAG2 5 0 18 44 +- 272 -12 +- 130 1 7840 26 Jun 05 04:59 LAG1 4 0 15 60 +- 224 -26 +- 123 2 7840 26 Jun 05 17:25 LAG2 15 0 9 6 +- 19 2 +- 12 2 7840 26 Jun 05 21:23 LAG2 10 0 14 -14 +- 21 -9 +- 28 1 7840 26 Jun 05 23:41 LAG1 15 0 11 -7 +- 19 -3 +- 9 2 7840 27 Jun 05 03:17 LAG1 13 0 9 0 +- 18 7 +- 15 2 7840 27 Jun 05 06:53 LAG1 9 0 9 6 +- 28 2 +- 26 3 7840 27 Jun 05 15:33 LAG2 14 0 12 11 +- 22 0 +- 16 3 7840 27 Jun 05 19:25 LAG2 20 0 14 6 +- 14 -8 +- 9 3 Station 7848 (Ajaccio) (position solved, acc. 30 mm) 7848 21 Jun 05 04:26 LAG1 2 0 1 -1 +- 200 -2 +- 236 0 7848 21 Jun 05 23:38 LAG1 7 0 12 11 +- 38 0 +- 32 5 7848 24 Jun 05 00:28 LAG1 5 0 8 0 +- 68 -8 +- 68 4 7848 25 Jun 05 21:53 LAG1 2 0 5 1 +- 104 -28 +- 453 0 7848 26 Jun 05 23:49 LAG1 11 0 9 -8 +- 35 0 +- 26 3 7848 27 Jun 05 22:43 LAG1 6 0 4 0 +- 86 -1 +- 66 4 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 20 Jun 05 02:09 LAG1 19 0 6 -3 +- 9 -2 +- 6 4 7941 20 Jun 05 12:59 LAG2 4 1 20 127 +- 234 -67 +- 142 2 7941 20 Jun 05 16:55 LAG2 15 0 8 -3 +- 15 -3 +- 10 2 7941 20 Jun 05 21:15 LAG2 5 0 21 16 +- 141 -22 +- 82 1 7941 21 Jun 05 19:01 LAG2 14 0 10 10 +- 12 0 +- 7 3 7941 21 Jun 05 23:09 LAG2 4 0 15 -10 +- 59 -10 +- 126 1 7941 21 Jun 05 23:39 LAG1 17 0 6 5 +- 12 -3 +- 6 3 7941 22 Jun 05 03:03 LAG1 9 0 7 -2 +- 15 -1 +- 19 7 7941 22 Jun 05 06:43 LAG1 5 0 16 -6 +- 119 -4 +- 62 5 7941 22 Jun 05 22:05 LAG1 11 0 15 -6 +- 12 6 +- 5 1 7941 23 Jun 05 01:47 LAG1 11 0 12 15 +- 16 -4 +- 11 3 7941 23 Jun 05 05:27 LAG1 3 0 46 79 +- 331 -18 +- 177 3 7941 23 Jun 05 08:54 LAG1 3 0 6 56 +- 368 -23 +- 171 1 7941 23 Jun 05 15:17 LAG2 5 0 7 2 +- 29 9 +- 49 1 7941 23 Jun 05 19:29 LAG2 12 0 3 9 +- 35 -4 +- 18 1 7941 24 Jun 05 07:35 LAG1 5 0 26 48 +- 212 -29 +- 83 2 7941 25 Jun 05 20:01 LAG2 3 0 25 0 +-1239 -10 +- 499 0 7941 26 Jun 05 08:23 LAG1 2 0 32 315 +-1329 -150 +- 575 0 7941 26 Jun 05 13:43 LAG2 6 0 4 0 +- 90 0 +- 47 4 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 20 Jun 05 09:21 LAG1 10 0 16 2 +- 25 8 +- 16 6 8834 20 Jun 05 12:29 LAG2 10 0 18 0 +- 21 10 +- 12 3 8834 20 Jun 05 16:47 LAG2 6 0 20 -13 +- 37 6 +- 36 5 8834 20 Jun 05 20:41 LAG2 9 0 20 -21 +- 34 -26 +- 24 7 8834 20 Jun 05 21:11 LAG1 3 0 5 -72 +- 761 -29 +- 332 2 8834 21 Jun 05 00:49 LAG1 12 0 7 3 +- 13 -1 +- 7 5 8834 21 Jun 05 04:25 LAG1 2 0 12 -40 +- 399 -26 +- 369 0 8834 21 Jun 05 07:56 LAG1 7 0 19 -16 +- 22 -2 +- 19 1 8834 21 Jun 05 11:01 LAG2 8 0 19 -16 +- 29 -2 +- 26 4 8834 22 Jun 05 21:11 LAG2 4 0 12 -15 +- 30 14 +- 51 4 8834 22 Jun 05 22:01 LAG1 4 0 22 111 +- 333 54 +- 136 4 8834 23 Jun 05 01:41 LAG1 7 0 11 16 +- 25 10 +- 19 5 8834 23 Jun 05 08:43 LAG1 8 0 12 -2 +- 15 14 +- 18 3 8834 23 Jun 05 10:53 LAG2 12 0 24 19 +- 12 7 +- 6 7 8834 23 Jun 05 12:16 LAG1 9 1 13 6 +- 17 -13 +- 37 6 8834 23 Jun 05 15:11 LAG2 4 0 13 -18 +- 32 -26 +- 74 4 8834 23 Jun 05 19:15 LAG2 4 0 1 -1 +- 34 -4 +- 76 0 8834 23 Jun 05 23:16 LAG2 2 0 5 13 +- 97 -28 +- 161 0 8834 24 Jun 05 00:23 LAG1 4 0 7 9 +- 37 7 +- 31 5 8834 24 Jun 05 04:05 LAG1 1 0 37 0 +- 0 0 +- 0 0 8834 24 Jun 05 07:18 LAG1 4 0 15 -16 +- 21 -7 +- 29 2 8834 24 Jun 05 09:23 LAG2 6 0 10 15 +- 27 -14 +- 34 2 8834 24 Jun 05 10:49 LAG1 7 0 17 1 +- 33 -17 +- 35 1 8834 24 Jun 05 13:23 LAG2 13 0 5 2 +- 31 0 +- 16 5 8834 25 Jun 05 15:25 LAG2 4 0 3 1 +- 30 5 +- 64 3 8834 26 Jun 05 13:34 LAG2 8 0 4 -6 +- 28 4 +- 19 2 8834 26 Jun 05 17:25 LAG2 17 0 1537 -6 +- 10 1042 +- 6 6*CHK* 8834 26 Jun 05 20:21 LAG1 5 0 396 2 +- 23 1026 +- 61 4*CHK* 8834 27 Jun 05 06:59 LAG1 4 0 1752 -27 +- 120 1054 +- 71 2*CHK* 8834 27 Jun 05 10:10 LAG1 12 0 1325 19 +- 12 1049 +- 9 9*CHK* 8834 27 Jun 05 11:13 LAG2 11 0 2361 1 +- 14 1038 +- 6 4*CHK* 8834 27 Jun 05 15:39 LAG2 6 0 662 -11 +- 17 1050 +- 27 1*CHK* 8834 27 Jun 05 18:59 LAG1 4 0 587 -21 +- 80 1058 +- 140 1*CHK* 8834 27 Jun 05 19:27 LAG2 8 0 1408 7 +- 18 1040 +- 13 5*CHK* 8834 27 Jun 05 22:33 LAG1 5 0 488 -18 +- 18 1053 +- 40 3*CHK* -------------------------------------------------------------------------------- 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 050112 - 050404 0/ 9/ 0 0/ 14/ 0 23 1831 LVIL 050117 - 050627 0/ 20/ 0 0/ 20/ 0 40 1864 MD2LAS 050110 - 050626 0/ 41/ 0 0/ 43/ 0 84 1873 SIMLAS 050316 - 050627 0/ 16/ 0 0/ 14/ 0 30 1884 RIGLAS 050104 - 050621 0/ 24/ 0 3/ 42/ 3 72 6405 TIGO 050104 - 050608 7/ 16/ 2 8/ 20/ 2 55 6810 ZIMLAT 050101 - 050628 171/ 91/ 15 113/ 66/ 15 471 7080 MLRS25 050101 - 050618 33/ 48/ 4 20/ 62/ 7 174 7090 ML0514 050101 - 050626 87/312/ 25 98/193/ 20 735 7105 ML0725 050108 - 050623 1/ 25/ 1 11/ 54/ 5 97 7110 ML0414 050118 - 050626 63/ 73/ 11 25/ 92/ 8 272 7124 ML0819 050118 - 050622 0/ 29/ 0 0/ 9/ 0 38 7237 CHALAS 050102 - 050608 0/ 52/ 1 0/ 71/ 0 124 7249 BEJLAS 050101 - 050614 0/ 50/ 0 0/ 68/ 0 118 7308 CRLLAS 050111 - 050510 7/ 5/ 1 1/ 10/ 0 24 7355 TROS02 050603 - 050627 0/ 21/ 0 0/ 7/ 0 28 7405 TIGO 050105 - 050606 5/ 25/ 0 3/ 7/ 0 40 7501 ML0616 050117 - 050626 31/ 82/ 2 33/ 57/ 4 209 7806 METLAS 050301 - 050301 0/ 0/ 0 0/ 1/ 0 1 7810 ZIMLAT 050101 - 050628 149/ 89/ 14 107/ 61/ 13 433 7811 POLLAS 050111 - 050627 0/ 31/ 0 0/ 39/ 0 70 7824 SPNLAS 050108 - 050627 1/ 66/ 0 0/ 82/ 3 152 7825 STL3 050101 - 050627 175/271/ 26 171/154/ 20 817 7832 SALRO 050101 - 050627 62/133/ 11 86/159/ 13 464 7835 GRASSE 050104 - 050621 0/ 26/ 2 0/ 31/ 2 61 7837 CHILAS 050102 - 050414 0/ 22/ 0 0/ 40/ 1 63 7838 SHOLAS 050106 - 050625 43/ 46/ 1 23/ 75/ 3 191 7839 AUSLAS 050103 - 050627 133/ 84/ 10 65/ 89/ 12 393 7840 RGOLAS 050102 - 050627 154/ 75/ 16 84/ 90/ 19 438 7841 GFZLA3 050105 - 050602 43/ 36/ 9 16/ 61/ 8 173 7848 FTLR06 050515 - 050627 4/ 19/ 0 3/ 9/ 0 35 7941 MLROnn 050102 - 050626 33/ 46/ 3 47/ 85/ 14 228 8834 WLRS01 050109 - 050628 141/ 87/ 14 105/100/ 16 463 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050621.0 -46.1 +/- 0.1 384.5 +/- 0.1 -32673.02 +/- 0.02 050622.0 -45.9 +/- 0.1 386.1 +/- 0.1 -32672.51 +/- 0.03 050623.0 -44.6 +/- 0.1 387.4 +/- 0.1 -32671.94 +/- 0.04 050624.0 -44.6 +/- 0.1 387.7 +/- 0.1 -32671.47 +/- 0.05 050625.0 -43.9 +/- 0.1 389.5 +/- 0.1 -32671.18 +/- 0.05 050626.0 -42.8 +/- 0.1 391.3 +/- 0.1 -32671.11 +/- 0.05 050627.0 -41.6 +/- 0.1 392.5 +/- 0.1 -32671.23 +/- 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 ******************************************************************************** |