| Date: | 2004-11-16 07:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 4541: Delft QL Report November 16, 2004 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2004-11-16 07:15:00 UTC Message No. 4541 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report November 16, 2004 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS November 16, 2004 This is a weekly 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 Mon, Nov 15, 2004. 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 Mon, Nov 15, 2004. 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 ------------------------------------------------------------------------------ 1864 Maidanak, Uzbekistan (site 2) 041107 - 041110 1 2 1873 Simeiz, Crimea, Ukraine 041107 - 041108 1 2 1884 Riga, Latvia 041109 - 041109 1 2 6810 Zimmerwald 846, Switzerland 041108 - 041115 14 13 7080 McDonald Obs., Fort Davis, TX 041108 - 041112 6 6 7090 Yarragadee, Australia 041108 - 041115 13 12 7105 Greenbelt, Maryland 041110 - 041115 2 1 7110 Monument Peak, California 041111 - 041115 3 6 7237 Changchun, China 041112 - 041115 4 4 7249 Beijing, China 041110 - 041110 - 2 7501 Hartebeesthoek, SA (MOB-6) 041108 - 041115 6 4 7810 Zimmerwald 423, Switzerland 041108 - 041115 14 12 7811 Borowiec, Poland 041110 - 041110 - 1 7824 San Fernando, Spain 041107 - 041114 4 7 7825 Mount Stromlo, Australia 041105 - 041114 15 9 7832 Riyad, Saudi Arabia 041108 - 041115 9 10 7835 Grasse, France 041110 - 041110 1 - 7837 Shanghai Observatory, China 041108 - 041108 1 2 7838 Simosato Observatory, Japan 040921 - 041113 10 21 7839 Graz, Austria 041107 - 041109 6 3 7840 Herstmonceux, United Kingdom 041110 - 041114 13 10 7941 Matera, Italy (MLRO 532) 041110 - 041110 - 1 8834 Wettzell, Germany 041108 - 041115 2 4 ------ ------ --- --- TOTAL 040921 - 041115 126 134 ------------------------------------------------------------------------------ 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 Sat, Nov 6, 2004 to Sun, Nov 14, 2004. The measurement and dynamic models used in this analysis are close to the IERS Standard. The overall model is referred to as QLDACMOD11. The details of this model can be obtained on request. The terrestrial reference frame is provided by the ITRF2000 station coordinates solution (extended with coordinates of new stations, where necessary). The general statistics and results of this week´s analysis are thus: ----------------------------------------------------------------------- Satellite LAGEOS-1 LAGEOS-2 Number of Stations 21 23 Number of Passes 114/114 115/113 Number of Normal Points 1135/1124 1249/1227 Weighted RMS of Fit (mm) 13 15 ----------------------------------------------------------------------- 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 7 Nov 04 15:45 LAG2 7 0 60 -60 +- 228 -1 +- 118 6 1864 10 Nov 04 14:30 LAG2 3 0 44 152 +-2574 -107 +-2148 32 1864 10 Nov 04 15:15 LAG1 8 0 32 28 +- 218 6 +- 96 15 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 7 Nov 04 19:42 LAG2 6 0 11590 11590 +- 246 0 +- 358 62*CHK* 1873 8 Nov 04 17:55 LAG2 4 0 11744 11827 +- 345 -157 +- 321 85*CHK* 1873 8 Nov 04 18:42 LAG1 5 5 0 0 +- 0 0 +- 0 0 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 9 Nov 04 15:51 LAG2 14 0 16 -16 +- 113 3 +- 86 9 1884 9 Nov 04 17:01 LAG1 16 0 18 -15 +- 82 -10 +- 53 7 1884 9 Nov 04 19:40 LAG2 9 0 13 -13 +- 162 -9 +- 171 10 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 6 Nov 04 21:12 LAG1 10 0 17 -18 +- 65 -5 +- 55 5 6810 6 Nov 04 21:12 LAG2 13 0 33 -26 +- 51 -8 +- 30 6 6810 8 Nov 04 09:35 LAG2 9 0 11 -11 +- 61 -5 +- 114 1 6810 8 Nov 04 11:35 LAG1 17 0 22 -20 +- 44 3 +- 29 6 6810 8 Nov 04 13:31 LAG2 8 0 11 -11 +- 65 -5 +- 98 0 6810 8 Nov 04 14:59 LAG1 14 0 16 -15 +- 49 1 +- 35 4 6810 8 Nov 04 17:25 LAG2 16 0 31 -19 +- 45 -12 +- 26 5 6810 8 Nov 04 18:27 LAG1 10 0 6 -4 +- 58 0 +- 37 4 6810 8 Nov 04 21:25 LAG2 18 0 30 -22 +- 44 -18 +- 32 2 6810 8 Nov 04 22:21 LAG1 3 0 18 -15 +- 161 -4 +- 477 6 6810 9 Nov 04 15:37 LAG2 17 0 8 8 +- 57 -3 +- 38 5 6810 9 Nov 04 17:05 LAG1 12 0 15 -3 +- 57 -7 +- 32 4 6810 9 Nov 04 19:31 LAG2 4 0 10 143 +-2071 59 +- 916 2 6810 10 Nov 04 15:43 LAG1 17 0 30 -31 +- 45 4 +- 27 3 6810 10 Nov 04 17:39 LAG2 14 0 21 -22 +- 54 -8 +- 34 5 6810 10 Nov 04 19:40 LAG1 5 0 31 -25 +- 599 -2 +- 286 2 6810 12 Nov 04 13:03 LAG1 19 0 21 -21 +- 42 0 +- 27 3 6810 12 Nov 04 13:53 LAG2 8 0 25 -26 +- 70 2 +- 42 4 6810 12 Nov 04 16:24 LAG1 3 0 18 -28 +- 391 -5 +- 172 7 6810 12 Nov 04 18:13 LAG2 10 0 25 -14 +- 108 -6 +- 60 6 6810 12 Nov 04 20:33 LAG1 4 0 22 0 +- 885 -10 +- 423 5 6810 12 Nov 04 22:22 LAG2 6 0 6 -6 +- 382 2 +- 289 5 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 6 Nov 04 02:28 LAG1 13 0 9 1 +- 19 -5 +- 14 5 7080 6 Nov 04 03:02 LAG2 9 0 4 -7 +- 47 4 +- 34 2 7080 8 Nov 04 15:46 LAG1 6 0 16 17 +- 60 1 +- 47 2 7080 9 Nov 04 17:54 LAG1 15 0 15 9 +- 17 -9 +- 12 5 7080 9 Nov 04 19:09 LAG2 9 0 9 35 +- 94 -16 +- 49 1 7080 9 Nov 04 22:56 LAG2 17 0 10 0 +- 17 -7 +- 13 2 7080 10 Nov 04 16:41 LAG1 11 0 8 7 +- 25 1 +- 18 1 7080 10 Nov 04 17:25 LAG2 4 0 7 36 +- 440 -15 +- 227 1 7080 10 Nov 04 20:55 LAG2 17 0 16 3 +- 16 -13 +- 14 4 7080 10 Nov 04 23:15 LAG1 6 0 21 24 +- 56 4 +- 64 0 7080 11 Nov 04 02:36 LAG1 11 0 15 12 +- 20 9 +- 17 4 7080 11 Nov 04 05:23 LAG2 19 0 24 -25 +- 16 8 +- 11 5 7080 12 Nov 04 03:23 LAG2 21 1 5 -1 +- 15 1 +- 9 4 7080 12 Nov 04 05:09 LAG1 3 0 31 38 +- 282 -8 +- 331 0 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 6 Nov 04 00:31 LAG1 11 0 6 6 +- 12 2 +- 11 1 7090 6 Nov 04 19:07 LAG2 7 0 6 23 +- 57 -13 +- 35 2 7090 6 Nov 04 19:47 LAG1 13 0 9 2 +- 11 -10 +- 13 2 7090 6 Nov 04 23:13 LAG1 5 0 10 -8 +- 28 3 +- 40 3 7090 7 Nov 04 11:35 LAG1 20 0 6 0 +- 9 1 +- 6 6 7090 7 Nov 04 15:03 LAG1 18 0 2 0 +- 10 1 +- 6 1 7090 8 Nov 04 14:17 LAG1 4 0 5 -69 +- 387 29 +- 156 2 7090 9 Nov 04 21:08 LAG2 6 0 9 -5 +- 140 -7 +- 86 5 7090 9 Nov 04 22:29 LAG1 9 0 20 -19 +- 14 3 +- 6 2 7090 10 Nov 04 01:27 LAG2 8 0 12 5 +- 43 11 +- 28 1 7090 10 Nov 04 11:29 LAG1 6 0 13 -23 +- 110 20 +- 62 2 7090 10 Nov 04 14:39 LAG1 18 0 7 -8 +- 11 3 +- 6 1 7090 10 Nov 04 15:13 LAG2 16 0 7 -7 +- 12 1 +- 8 2 7090 10 Nov 04 18:05 LAG1 6 0 9 9 +- 17 4 +- 45 2 7090 11 Nov 04 17:23 LAG2 17 0 10 -4 +- 14 8 +- 9 2 7090 12 Nov 04 11:43 LAG1 24 0 12 -9 +- 8 -4 +- 4 4 7090 12 Nov 04 15:19 LAG2 11 0 5 -1 +- 12 -1 +- 6 4 7090 12 Nov 04 15:29 LAG1 14 0 20 -7 +- 13 -11 +- 10 3 7090 12 Nov 04 19:19 LAG2 25 0 7 4 +- 8 -3 +- 6 2 7090 12 Nov 04 22:11 LAG1 8 0 21 -18 +- 21 20 +- 14 4 7090 12 Nov 04 23:43 LAG2 3 0 14 65 +- 678 24 +- 330 2 7090 13 Nov 04 10:34 LAG1 7 0 6 -4 +- 19 4 +- 35 1 7090 13 Nov 04 13:24 LAG2 16 0 5 -3 +- 10 4 +- 9 1 7090 13 Nov 04 14:03 LAG1 15 0 8 0 +- 11 0 +- 6 7 7090 13 Nov 04 17:19 LAG2 26 0 6 -4 +- 8 2 +- 4 2 7090 13 Nov 04 20:39 LAG1 13 0 15 -3 +- 11 10 +- 8 2 7090 13 Nov 04 21:42 LAG2 13 0 9 -11 +- 17 -4 +- 14 4 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 8 Nov 04 03:27 LAG2 8 0 9 -31 +- 57 16 +- 37 1 7105 10 Nov 04 00:18 LAG1 12 0 5 0 +- 22 0 +- 12 4 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 11 Nov 04 01:14 LAG2 6 0 23 -18 +- 17 -13 +- 26 3 7110 11 Nov 04 05:20 LAG2 9 0 45 -43 +- 14 -5 +- 13 5 7110 11 Nov 04 06:30 LAG1 1 0 16 0 +- 0 0 +- 0 0 7110 11 Nov 04 19:15 LAG2 2 0 11 -18 +- 110 12 +- 203 0 7110 12 Nov 04 17:17 LAG1 9 0 7 -10 +- 30 -2 +- 17 4 7110 12 Nov 04 21:15 LAG2 2 0 0 -5 +- 242 -8 +- 369 0 7110 13 Nov 04 00:14 LAG1 4 0 7 -5 +- 22 -4 +- 65 4 7110 13 Nov 04 01:19 LAG2 4 0 7 -6 +- 279 0 +- 185 6 Station 7231 (Wuhan) (position fixed, acc. 50 mm) 7231 6 Nov 04 14:11 LAG2 7 0 46 -32 +- 60 18 +- 95 27 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 12 Nov 04 09:04 LAG1 6 0 29 -21 +- 80 9 +- 103 10 7237 12 Nov 04 10:56 LAG2 6 0 8 5 +- 133 -8 +- 110 4 7237 13 Nov 04 11:07 LAG1 9 0 11 2 +- 91 8 +- 66 6 7237 13 Nov 04 13:01 LAG2 8 0 6 -2 +- 96 3 +- 107 6 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 10 Nov 04 10:39 LAG2 6 0 1 1 +- 170 -1 +- 182 1 7249 10 Nov 04 14:43 LAG2 3 0 3 -6 +- 309 11 +- 532 3 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 7 Nov 04 06:33 LAG1 8 0 7 7 +- 17 6 +- 19 0 7501 8 Nov 04 21:25 LAG1 12 0 11 6 +- 21 1 +- 14 5 7501 8 Nov 04 22:25 LAG2 11 0 5 3 +- 12 2 +- 8 3 7501 9 Nov 04 06:59 LAG2 4 0 18 66 +- 122 36 +- 87 2 7501 9 Nov 04 07:27 LAG1 11 0 12 -2 +- 18 -8 +- 14 2 7501 9 Nov 04 16:40 LAG1 4 0 1 0 +- 88 0 +- 94 1 7501 9 Nov 04 20:15 LAG1 3 0 17 66 +- 205 -31 +- 129 0 7501 9 Nov 04 20:31 LAG2 10 0 10 8 +- 13 4 +- 9 4 7501 10 Nov 04 18:37 LAG1 13 0 13 7 +- 13 3 +- 7 4 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 6 Nov 04 21:17 LAG2 4 0 15 -18 +- 121 -11 +- 77 3 7810 6 Nov 04 21:29 LAG1 3 0 15 -14 +- 139 -1 +- 212 1 7810 8 Nov 04 09:35 LAG2 9 0 4 0 +- 61 -4 +- 116 3 7810 8 Nov 04 11:35 LAG1 16 0 13 -9 +- 45 3 +- 31 7 7810 8 Nov 04 13:31 LAG2 8 0 4 -3 +- 65 -3 +- 101 2 7810 8 Nov 04 14:59 LAG1 15 0 7 -6 +- 47 0 +- 31 3 7810 8 Nov 04 17:26 LAG2 10 0 27 -9 +- 58 -15 +- 34 3 7810 8 Nov 04 18:27 LAG1 9 0 4 1 +- 63 -1 +- 42 3 7810 8 Nov 04 21:26 LAG2 11 0 38 -20 +- 57 -18 +- 40 3 7810 8 Nov 04 22:21 LAG1 3 0 25 -25 +- 167 2 +- 481 3 7810 9 Nov 04 15:37 LAG2 16 0 8 7 +- 57 -3 +- 40 5 7810 9 Nov 04 17:05 LAG1 14 0 16 -3 +- 52 -7 +- 28 3 7810 9 Nov 04 19:33 LAG2 3 0 13 41 +-2930 12 +-1324 0 7810 10 Nov 04 15:43 LAG1 18 0 16 -16 +- 44 3 +- 26 2 7810 10 Nov 04 17:39 LAG2 13 0 14 -8 +- 55 -8 +- 32 3 7810 10 Nov 04 19:45 LAG1 3 0 17 74 +-1985 -39 +- 860 0 7810 12 Nov 04 13:03 LAG1 20 0 13 -12 +- 40 0 +- 25 2 7810 12 Nov 04 13:53 LAG2 9 0 11 -12 +- 69 3 +- 39 2 7810 12 Nov 04 16:24 LAG1 2 0 10 38 +-2425 18 +- 926 0 7810 12 Nov 04 18:14 LAG2 8 0 18 -12 +- 143 -3 +- 75 2 7810 12 Nov 04 20:34 LAG1 4 0 26 42 +-1152 -30 +- 516 3 7810 12 Nov 04 22:28 LAG2 1 0 3 0 +- 0 0 +- 0 0 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 10 Nov 04 17:47 LAG2 10 0 19 12 +- 69 -6 +- 56 8 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 6 Nov 04 21:11 LAG1 4 0 91 92 +- 365 0 +- 239 3 7824 7 Nov 04 19:46 LAG1 3 0 76 125 +- 730 24 +- 356 3 7824 7 Nov 04 23:33 LAG2 12 0 52 52 +- 35 2 +- 48 2 7824 8 Nov 04 18:23 LAG1 3 0 55 83 +-1510 12 +- 661 1 7824 9 Nov 04 23:43 LAG2 14 0 43 43 +- 32 -4 +- 38 4 7824 10 Nov 04 19:41 LAG1 3 0 55 215 +-1572 -68 +- 674 0 7824 10 Nov 04 21:47 LAG2 5 0 82 107 +- 363 16 +- 225 2 7824 11 Nov 04 20:17 LAG2 7 0 77 95 +- 214 -11 +- 136 1 7824 12 Nov 04 00:13 LAG2 8 0 51 56 +- 128 -5 +- 128 3 7824 13 Nov 04 20:35 LAG2 2 0 61 62 +-1450 0 +- 974 0 7824 13 Nov 04 22:13 LAG1 6 0 108 114 +- 178 5 +- 155 3 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 9 Nov 04 12:08 LAG1 22 0 12 -1 +- 8 -5 +- 4 6 7825 9 Nov 04 13:35 LAG2 10 0 10 -27 +- 39 17 +- 23 3 7825 10 Nov 04 11:07 LAG1 11 0 20 -37 +- 23 20 +- 14 2 7825 10 Nov 04 11:31 LAG2 8 0 13 -13 +- 15 -9 +- 37 3 7825 11 Nov 04 23:37 LAG1 6 0 20 -1 +- 86 13 +- 54 2 7825 12 Nov 04 08:13 LAG1 11 0 3 0 +- 13 1 +- 21 3 7825 12 Nov 04 11:33 LAG1 24 0 9 -7 +- 8 -1 +- 4 5 7825 12 Nov 04 15:05 LAG1 12 0 9 -2 +- 13 -9 +- 13 4 7825 12 Nov 04 15:31 LAG2 23 0 8 3 +- 8 -5 +- 5 3 7825 12 Nov 04 18:21 LAG1 6 0 15 -8 +- 19 -9 +- 11 5 7825 13 Nov 04 10:44 LAG1 7 0 26 -30 +- 110 23 +- 46 4 7825 13 Nov 04 13:31 LAG2 17 0 16 10 +- 11 3 +- 6 13 7825 13 Nov 04 17:09 LAG1 11 0 10 10 +- 13 4 +- 14 2 7825 13 Nov 04 17:56 LAG2 18 0 5 2 +- 12 -3 +- 9 4 7825 13 Nov 04 20:25 LAG1 23 0 8 -1 +- 8 -1 +- 4 8 7825 13 Nov 04 21:57 LAG2 18 3 11 11 +- 13 8 +- 8 3 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 7 Nov 04 15:39 LAG2 7 0 13 -12 +- 138 0 +- 100 0 7832 7 Nov 04 15:55 LAG1 7 0 8 -14 +- 80 -4 +- 46 4 7832 8 Nov 04 08:01 LAG1 12 0 3 1 +- 19 0 +- 16 2 7832 8 Nov 04 09:38 LAG2 7 0 8 -5 +- 52 9 +- 39 2 7832 8 Nov 04 13:39 LAG2 8 0 10 -18 +- 60 -12 +- 69 4 7832 8 Nov 04 14:33 LAG1 8 0 4 13 +- 79 6 +- 47 2 7832 8 Nov 04 17:47 LAG2 7 0 34 -13 +- 245 -22 +- 117 3 7832 8 Nov 04 18:02 LAG1 7 0 23 12 +- 102 -6 +- 60 3 7832 9 Nov 04 06:41 LAG1 9 0 15 16 +- 31 1 +- 18 2 7832 9 Nov 04 11:33 LAG2 9 0 22 -11 +- 56 9 +- 47 4 7832 9 Nov 04 13:39 LAG1 4 0 13 14 +- 147 0 +- 135 4 7832 9 Nov 04 15:55 LAG2 8 0 10 -2 +- 36 -8 +- 29 5 7832 9 Nov 04 16:45 LAG1 7 0 7 -18 +- 64 -11 +- 43 2 7832 10 Nov 04 09:05 LAG1 7 0 12 -12 +- 53 21 +- 52 3 7832 10 Nov 04 09:49 LAG2 9 0 4 -1 +- 26 2 +- 31 4 7832 10 Nov 04 13:57 LAG2 7 0 15 -22 +- 71 -9 +- 86 2 7832 10 Nov 04 15:29 LAG1 7 0 21 -19 +- 25 5 +- 24 2 7832 12 Nov 04 09:59 LAG2 3 0 15 -32 +- 211 -20 +- 239 1 7832 13 Nov 04 14:53 LAG1 11 0 8 8 +- 20 2 +- 20 2 7832 13 Nov 04 16:23 LAG2 11 0 4 -8 +- 53 -4 +- 37 2 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 10 Nov 04 19:27 LAG1 13 0 9 16 +- 50 -7 +- 28 4 Station 7837 (Shanghai Observatory) (position fixed, acc. 50 mm) 7837 7 Nov 04 12:15 LAG2 5 0 21 -17 +- 217 3 +- 234 6 7837 8 Nov 04 10:27 LAG2 8 0 19 12 +- 102 8 +- 122 3 7837 8 Nov 04 10:47 LAG1 10 0 13 15 +- 76 14 +- 54 5 7837 8 Nov 04 14:25 LAG2 15 0 8 9 +- 49 -4 +- 37 4 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 6 Nov 04 05:46 LAG2 22 0 17 7 +- 22 -13 +- 15 4 7838 6 Nov 04 09:49 LAG1 14 0 16 27 +- 44 10 +- 23 2 7838 6 Nov 04 10:19 LAG2 16 0 21 35 +- 48 -11 +- 31 2 7838 6 Nov 04 13:59 LAG2 25 0 24 22 +- 19 7 +- 13 2 7838 7 Nov 04 04:05 LAG2 11 0 26 38 +- 56 -11 +- 39 3 7838 7 Nov 04 07:59 LAG2 15 0 11 6 +- 29 12 +- 30 5 7838 7 Nov 04 08:39 LAG1 18 0 37 39 +- 24 -6 +- 15 3 7838 7 Nov 04 12:03 LAG1 14 0 9 10 +- 34 1 +- 25 3 7838 7 Nov 04 12:33 LAG2 14 0 55 38 +- 67 9 +- 38 5 7838 9 Nov 04 12:17 LAG2 22 0 27 28 +- 22 14 +- 15 3 7838 9 Nov 04 13:03 LAG1 14 0 7 -1 +- 28 -7 +- 31 3 7838 10 Nov 04 10:25 LAG2 27 0 49 47 +- 18 4 +- 11 8 7838 12 Nov 04 02:15 LAG1 9 0 7 4 +- 32 0 +- 33 6 7838 12 Nov 04 02:39 LAG2 10 0 30 38 +- 68 -6 +- 40 8 7838 12 Nov 04 06:35 LAG2 19 0 12 -3 +- 24 -7 +- 21 7 7838 12 Nov 04 08:45 LAG1 21 0 25 23 +- 20 5 +- 11 4 7838 12 Nov 04 10:46 LAG2 23 0 36 34 +- 20 1 +- 14 10 7838 12 Nov 04 12:19 LAG1 20 0 15 -14 +- 21 1 +- 16 4 7838 12 Nov 04 14:49 LAG2 15 0 21 -21 +- 24 1 +- 35 1 7838 13 Nov 04 04:26 LAG2 25 0 22 12 +- 19 -12 +- 12 5 7838 13 Nov 04 07:27 LAG1 11 0 22 2 +- 30 -10 +- 17 13 7838 13 Nov 04 08:37 LAG2 26 0 21 19 +- 19 8 +- 13 3 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 7 Nov 04 16:45 LAG1 3 0 1 10 +- 500 -4 +- 206 0 7839 7 Nov 04 19:53 LAG1 5 0 9 1 +- 19 7 +- 16 0 7839 7 Nov 04 20:00 LAG2 6 0 22 -4 +- 144 -7 +- 63 0 7839 7 Nov 04 23:35 LAG2 5 0 16 -15 +- 20 -3 +- 33 0 7839 8 Nov 04 04:16 LAG1 4 0 7 -20 +- 191 -12 +- 186 0 7839 8 Nov 04 07:59 LAG1 15 0 10 4 +- 11 6 +- 7 2 7839 8 Nov 04 09:43 LAG2 13 0 5 6 +- 21 0 +- 16 1 7839 8 Nov 04 11:25 LAG1 4 0 17 13 +- 367 12 +- 146 0 7839 9 Nov 04 16:57 LAG1 11 0 16 -7 +- 12 -6 +- 5 2 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 10 Nov 04 09:10 LAG1 8 0 23 20 +- 72 1 +- 39 2 7840 10 Nov 04 19:23 LAG1 18 0 12 10 +- 18 -7 +- 10 3 7840 10 Nov 04 21:43 LAG2 11 0 10 -6 +- 20 -7 +- 17 1 7840 11 Nov 04 07:39 LAG1 10 0 28 19 +- 29 10 +- 28 3 7840 11 Nov 04 11:01 LAG1 9 0 14 -7 +- 29 5 +- 19 2 7840 11 Nov 04 11:46 LAG2 17 0 11 7 +- 17 2 +- 13 6 7840 11 Nov 04 21:33 LAG1 9 0 24 23 +- 38 0 +- 40 1 7840 12 Nov 04 13:45 LAG2 6 0 15 -23 +- 171 -4 +- 89 2 7840 12 Nov 04 20:02 LAG1 11 0 16 1 +- 20 -8 +- 11 6 7840 12 Nov 04 21:57 LAG2 10 0 9 0 +- 21 -5 +- 17 5 7840 13 Nov 04 12:05 LAG1 3 0 10 3 +- 86 -26 +- 180 3 7840 13 Nov 04 15:21 LAG1 6 0 18 20 +- 41 3 +- 48 1 7840 13 Nov 04 16:01 LAG2 14 0 5 2 +- 18 -2 +- 11 3 7840 13 Nov 04 18:39 LAG1 14 0 3 0 +- 18 -1 +- 10 3 7840 13 Nov 04 20:06 LAG2 16 0 8 3 +- 20 -6 +- 14 3 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 6 Nov 04 07:11 LAG1 9 0 5 12 +- 48 4 +- 25 0 7941 6 Nov 04 09:33 LAG2 8 0 6 18 +- 52 -15 +- 39 1 7941 6 Nov 04 10:49 LAG1 10 0 4 -2 +- 16 2 +- 14 1 7941 10 Nov 04 21:51 LAG2 10 0 9 -13 +- 22 -18 +- 24 0 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 8 Nov 04 13:45 LAG2 2 0 17 -24 +- 186 12 +- 300 0 8834 8 Nov 04 17:29 LAG2 10 0 10 -23 +- 30 -15 +- 22 3 8834 8 Nov 04 18:25 LAG1 4 0 8 -3 +- 211 2 +- 100 3 8834 10 Nov 04 08:55 LAG1 9 0 31 -24 +- 15 12 +- 15 1 8834 10 Nov 04 13:45 LAG2 7 0 15 -18 +- 25 -6 +- 31 2 -------------------------------------------------------------------------------- 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 040314 - 041105 0/ 27/ 0 0/ 20/ 0 47 1831 LVIL 040815 - 041105 0/ 21/ 0 0/ 25/ 0 46 1863 MDNLAS 040103 - 040117 0/ 2/ 0 0/ 4/ 0 6 1864 MD2LAS 040102 - 041110 0/156/ 0 0/ 85/ 0 241 1868 KOMLAS 040315 - 040614 0/ 15/ 0 0/ 3/ 0 18 1873 SIMLAS 040118 - 041108 0/ 34/ 0 0/ 17/ 0 51 1884 RIGLAS 040310 - 041109 0/ 76/ 1 0/ 21/ 1 99 1893 CRMLAS 040331 - 041012 0/ 63/ 0 0/ 41/ 0 104 6405 TIGO 040103 - 041030 3/ 16/ 2 3/ 4/ 0 28 6810 ZIMLAT 040107 - 041115 185/217/ 32 148/148/ 18 748 7080 MLRS25 040104 - 041112 64/ 98/ 12 73/100/ 7 354 7090 ML0514 040101 - 041115 226/334/ 47 188/324/ 37 1156 7105 ML0725 040104 - 041115 20/106/ 9 5/104/ 9 253 7110 ML0414 040102 - 041115 111/226/ 20 118/163/ 24 662 7124 ML0819 040315 - 041002 0/ 33/ 0 0/ 16/ 0 49 7210 HOLLAS 040105 - 040607 33/ 49/ 3 50/ 52/ 6 193 7231 WUHA01 040408 - 041106 0/ 4/ 0 0/ 13/ 0 17 7237 CHALAS 040101 - 041115 0/342/ 6 0/234/ 2 584 7249 BEJLAS 040101 - 041110 0/225/ 1 0/191/ 0 417 7308 CRLLAS 040106 - 040311 5/ 47/ 0 0/ 38/ 2 92 7355 TROS02 040509 - 040829 0/ 82/ 0 0/ 34/ 0 116 7358 GMSL 040901 - 040901 0/ 1/ 0 0/ 1/ 0 2 7405 TIGO 040103 - 040823 0/ 12/ 2 0/ 4/ 0 18 7501 ML0616 040106 - 041115 64/ 66/ 19 93/151/ 14 407 7604 BREF 041017 - 041021 0/ 1/ 0 0/ 2/ 0 3 7806 METLAS 040720 - 041105 0/ 14/ 0 0/ 10/ 0 24 7810 ZIMLAT 040507 - 041115 200/133/ 28 132/ 94/ 19 606 7811 POLLAS 040105 - 041110 0/120/ 0 0/ 73/ 0 193 7823 FTLR** 040612 - 040626 0/ 9/ 0 1/ 1/ 1 12 7824 SPNLAS 040109 - 041114 0/139/ 0 0/109/ 1 249 7825 STL3 040807 - 041114 29/ 41/ 6 47/ 19/ 3 145 7830 FTLR** 030903 - 030903 0/ 0/ 0 0/ 1/ 0 1 7832 SALRO 040102 - 041115 154/328/ 28 215/321/ 40 1086 7835 GRASSE 040301 - 041110 1/ 71/ 3 0/ 40/ 1 116 7836 GFZLAS 040105 - 040701 0/ 38/ 0 0/ 21/ 1 60 7837 CHILAS 040102 - 041108 0/ 98/ 0 0/123/ 1 222 7838 SHOLAS 040105 - 041113 40/224/ 4 72/194/ 10 544 7839 AUSLAS 040107 - 041109 142/214/ 32 84/161/ 20 653 7840 RGOLAS 040102 - 041114 138/229/ 40 115/133/ 20 675 7841 GFZLA3 040112 - 041022 26/104/ 16 16/ 73/ 10 245 7845 GRASLL 040318 - 040920 13/ 27/ 0 11/ 14/ 1 66 7941 MLROnn 040111 - 041110 108/141/ 22 106/105/ 9 491 8834 WLRS01 040108 - 041115 241/216/ 45 188/172/ 22 884 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 041107.0 208.3 +/- 0.2 347.1 +/- 0.2 -32527.50 +/- 0.03 041108.0 208.3 +/- 0.1 344.0 +/- 0.1 -32528.38 +/- 0.04 041109.0 208.2 +/- 0.2 343.1 +/- 0.2 -32529.56 +/- 0.05 041110.0 208.5 +/- 0.1 340.9 +/- 0.1 -32530.88 +/- 0.06 041111.0 207.2 +/- 0.1 339.5 +/- 0.1 -32532.30 +/- 0.07 041112.0 208.1 +/- 0.2 336.9 +/- 0.1 -32533.66 +/- 0.07 041113.0 208.1 +/- 0.1 334.7 +/- 0.1 -32534.73 +/- 0.08 -------------------------------------------------------------- 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, 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 system 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 ******************************************************************************** |