| Date: | 2005-03-16 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5071: Delft QL Report March 16, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-03-16 13:15:00 UTC Message No. 5071 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report March 16, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS March 16, 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 Wed, Mar 16, 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 Wed, Mar 16, 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 ------------------------------------------------------------------------------ 1884 Riga, Latvia 050313 - 050316 - 2 7105 Greenbelt, Maryland 050315 - 050315 1 3 7110 Monument Peak, California 050314 - 050315 - 3 7237 Changchun, China 050313 - 050314 1 3 7249 Beijing, China 050314 - 050315 2 2 7811 Borowiec, Poland 050314 - 050315 1 1 7824 San Fernando, Spain 050313 - 050316 1 1 7825 Mount Stromlo, Australia 050313 - 050315 10 7 7832 Riyad, Saudi Arabia 050314 - 050316 2 4 7837 Shanghai Observatory, China 050313 - 050315 2 5 7839 Graz, Austria 050313 - 050316 9 8 7840 Herstmonceux, United Kingdom 050313 - 050316 4 3 7941 Matera, Italy (MLRO 532) 050312 - 050314 3 5 ------ ------ --- --- TOTAL 050312 - 050316 36 47 ------------------------------------------------------------------------------ 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 Tue, Mar 8, 2005 to Wed, Mar 16, 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 17 19 Number of Passes 99/ 99 123/122 Number of Normal Points 1012/1009 1355/1339 Weighted RMS of Fit (mm) 14 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 10 Mar 05 17:49 LAG2 5 0 73 108 +-1644 -23 +-1036 12 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 9 Mar 05 23:17 LAG2 11 0 79 79 +- 90 -1 +- 97 4 1884 13 Mar 05 23:40 LAG2 9 0 40 37 +- 129 -3 +- 119 5 1884 15 Mar 05 23:49 LAG2 6 0 37 17 +- 693 -10 +- 378 4 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 8 Mar 05 18:53 LAG2 3 0 8 -68 +- 312 89 +- 407 2 7080 8 Mar 05 21:00 LAG1 8 0 8 -5 +- 29 7 +- 29 5 7080 9 Mar 05 16:48 LAG2 11 0 34 27 +- 24 9 +- 23 4 7080 9 Mar 05 19:35 LAG1 12 0 12 -8 +- 19 7 +- 17 7 7080 9 Mar 05 23:19 LAG1 9 0 8 17 +- 69 -6 +- 44 2 7080 10 Mar 05 21:51 LAG1 9 0 18 -23 +- 36 5 +- 27 1 7080 11 Mar 05 04:31 LAG2 9 0 30 3 +- 22 -19 +- 14 3 7080 11 Mar 05 08:33 LAG2 15 0 17 3 +- 17 -16 +- 16 5 7080 11 Mar 05 10:16 LAG1 15 0 12 9 +- 20 2 +- 12 3 7080 11 Mar 05 12:45 LAG2 7 0 12 -10 +- 96 1 +- 65 4 7080 12 Mar 05 06:40 LAG2 13 0 5 -4 +- 20 3 +- 17 2 7080 12 Mar 05 08:45 LAG1 17 0 14 13 +- 16 0 +- 12 4 7080 12 Mar 05 10:43 LAG2 11 0 8 -6 +- 20 2 +- 18 2 7080 12 Mar 05 12:31 LAG1 13 0 15 10 +- 32 -13 +- 18 2 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 8 Mar 05 12:23 LAG1 3 0 21 -22 +- 32 -3 +- 145 1 7090 10 Mar 05 09:00 LAG2 15 0 12 -15 +- 14 12 +- 14 2 7090 10 Mar 05 09:33 LAG1 18 0 8 8 +- 9 -1 +- 6 2 7090 10 Mar 05 13:05 LAG2 17 0 17 -6 +- 10 13 +- 7 1 7090 10 Mar 05 19:37 LAG1 21 0 20 -15 +- 9 -5 +- 4 1 7090 11 Mar 05 11:43 LAG2 3 0 21 -56 +- 676 15 +- 292 0 7090 11 Mar 05 11:49 LAG1 4 0 14 12 +- 29 -8 +- 75 3 7090 11 Mar 05 14:57 LAG1 12 0 11 -3 +- 12 11 +- 14 2 7090 11 Mar 05 15:21 LAG2 7 0 7 -6 +- 22 -1 +- 31 3 7090 11 Mar 05 18:19 LAG1 17 0 22 2 +- 10 12 +- 5 1 7090 12 Mar 05 07:09 LAG1 6 0 17 -10 +- 38 -3 +- 34 10 7090 12 Mar 05 13:18 LAG2 7 0 7 -6 +- 16 2 +- 14 1 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 9 Mar 05 04:35 LAG2 11 0 16 -11 +- 15 -3 +- 9 4 7105 9 Mar 05 05:41 LAG1 6 0 10 -2 +- 19 -2 +- 60 10 7105 9 Mar 05 08:31 LAG2 11 0 17 0 +- 12 -11 +- 8 2 7105 9 Mar 05 09:33 LAG1 8 0 11 -17 +- 71 12 +- 31 1 7105 10 Mar 05 06:25 LAG2 25 0 11 -3 +- 8 6 +- 5 1 7105 15 Mar 05 01:11 LAG2 15 0 6 3 +- 10 -5 +- 12 2 7105 15 Mar 05 05:05 LAG2 11 0 4 -1 +- 12 -2 +- 8 1 7105 15 Mar 05 08:09 LAG1 16 0 16 14 +- 12 -11 +- 7 2 7105 15 Mar 05 09:11 LAG2 3 0 22 -1 +- 583 -11 +- 280 1 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 9 Mar 05 17:01 LAG2 5 0 12 73 +- 171 -36 +- 94 6 7110 10 Mar 05 06:13 LAG2 13 0 29 -14 +- 12 16 +- 9 2 7110 10 Mar 05 10:21 LAG2 13 0 4 4 +- 17 4 +- 15 2 7110 10 Mar 05 11:59 LAG1 4 0 36 79 +- 193 -50 +- 84 1 7110 10 Mar 05 14:39 LAG2 5 0 9 23 +- 111 20 +- 74 1 7110 10 Mar 05 21:45 LAG1 6 0 30 -23 +- 43 5 +- 34 1 7110 11 Mar 05 04:37 LAG2 8 0 16 0 +- 18 -16 +- 19 1 7110 11 Mar 05 08:25 LAG2 9 0 22 2 +- 14 -15 +- 9 3 7110 11 Mar 05 10:19 LAG1 7 0 5 1 +- 19 1 +- 10 4 7110 11 Mar 05 12:35 LAG2 9 0 18 -11 +- 14 -6 +- 7 3 7110 12 Mar 05 06:39 LAG2 6 0 4 4 +- 19 4 +- 34 1 7110 12 Mar 05 08:57 LAG1 10 0 4 4 +- 16 -2 +- 21 3 7110 12 Mar 05 10:49 LAG2 8 0 4 -4 +- 15 -1 +- 29 1 7110 12 Mar 05 12:31 LAG1 4 0 6 5 +- 29 -3 +- 55 0 7110 12 Mar 05 14:59 LAG2 7 0 8 0 +- 16 1 +- 11 8 7110 14 Mar 05 06:38 LAG2 3 0 12 10 +- 39 12 +- 26 0 7110 14 Mar 05 15:15 LAG2 8 0 10 -8 +- 15 -2 +- 11 3 7110 15 Mar 05 04:47 LAG2 18 0 13 10 +- 10 -3 +- 7 2 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 10 Mar 05 19:13 LAG1 2 0 37 36 +- 118 -26 +- 825 0 7237 12 Mar 05 18:34 LAG2 2 0 30 217 +-4250 -119 +-2065 0 7237 12 Mar 05 19:58 LAG1 4 0 33 26 +- 87 -23 +- 187 4 7237 13 Mar 05 12:39 LAG2 2 0 33 98 +-2252 -82 +-1418 0 7237 13 Mar 05 16:23 LAG2 10 0 30 17 +- 118 -27 +- 75 8 7237 13 Mar 05 18:25 LAG1 7 0 25 -6 +- 62 11 +- 41 14 7237 14 Mar 05 14:25 LAG2 5 0 2 -1 +- 79 0 +- 89 2 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 8 Mar 05 17:36 LAG2 10 0 24 -15 +- 61 -7 +- 43 7 7249 8 Mar 05 18:21 LAG1 9 0 25 15 +- 51 10 +- 76 19 7249 8 Mar 05 21:45 LAG2 3 0 10 2 +- 554 12 +- 546 5 7249 9 Mar 05 19:51 LAG2 6 0 16 14 +- 62 -17 +- 140 5 7249 10 Mar 05 17:46 LAG2 16 0 14 -5 +- 42 -7 +- 32 4 7249 10 Mar 05 19:05 LAG1 14 0 9 -6 +- 40 -4 +- 33 5 7249 11 Mar 05 16:15 LAG2 8 0 29 -71 +- 482 39 +- 207 20 7249 11 Mar 05 17:49 LAG1 12 0 13 -13 +- 57 9 +- 57 9 7249 11 Mar 05 19:57 LAG2 16 0 12 2 +- 38 -7 +- 34 9 7249 11 Mar 05 21:31 LAG1 5 0 7 -4 +- 159 5 +- 140 6 7249 12 Mar 05 14:17 LAG2 9 0 17 16 +- 200 -4 +- 111 14 7249 12 Mar 05 18:03 LAG2 17 0 26 -4 +- 44 -15 +- 32 9 7249 12 Mar 05 19:53 LAG1 15 0 31 11 +- 39 0 +- 22 29 7249 14 Mar 05 18:12 LAG2 8 1 12 2 +- 57 0 +- 75 12 7249 14 Mar 05 20:44 LAG1 8 0 18 -9 +- 54 0 +- 54 15 7249 15 Mar 05 16:14 LAG2 12 0 48 25 +- 44 30 +- 32 8 7249 15 Mar 05 19:21 LAG1 11 0 14 0 +- 46 -1 +- 39 14 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 11 Mar 05 03:12 LAG1 3 0 3 8 +- 89 12 +- 137 2 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 9 Mar 05 01:01 LAG2 7 0 25 17 +- 69 10 +- 48 7 7811 9 Mar 05 01:41 LAG1 5 0 60 58 +- 83 -6 +- 76 4 7811 9 Mar 05 23:13 LAG2 10 0 26 25 +- 59 0 +- 50 6 7811 10 Mar 05 03:13 LAG2 6 0 24 36 +- 119 18 +- 99 7 7811 10 Mar 05 03:54 LAG1 8 0 26 25 +- 64 0 +- 63 4 7811 10 Mar 05 21:21 LAG2 10 0 42 36 +- 60 -15 +- 73 8 7811 14 Mar 05 21:42 LAG2 7 0 11 9 +- 69 0 +- 47 6 7811 15 Mar 05 03:58 LAG1 5 0 36 86 +- 295 29 +- 149 12 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 13 Mar 05 23:16 LAG2 3 0 51 171 +- 691 60 +- 340 1 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 9 Mar 05 11:07 LAG2 17 0 8 -9 +- 11 5 +- 8 1 7825 9 Mar 05 14:08 LAG1 4 4 0 0 +- 0 0 +- 0 0 7825 10 Mar 05 05:17 LAG2 11 0 27 -2 +- 47 17 +- 29 10 7825 10 Mar 05 05:59 LAG1 16 0 12 4 +- 12 4 +- 7 5 7825 10 Mar 05 09:15 LAG2 2 0 18 62 +- 498 70 +- 437 0 7825 10 Mar 05 09:45 LAG1 2 0 7 -67 +-1020 39 +- 659 0 7825 11 Mar 05 03:19 LAG2 11 1 6 8 +- 73 -7 +- 38 4 7825 11 Mar 05 04:33 LAG1 13 0 15 -12 +- 11 -10 +- 11 2 7825 11 Mar 05 07:37 LAG2 9 0 11 27 +- 76 -20 +- 41 1 7825 11 Mar 05 07:59 LAG1 16 0 11 4 +- 10 -6 +- 6 3 7825 11 Mar 05 11:19 LAG2 6 0 19 -17 +- 17 -5 +- 10 1 7825 11 Mar 05 11:35 LAG1 8 0 8 9 +- 24 -2 +- 26 1 7825 11 Mar 05 14:47 LAG1 17 0 13 -7 +- 11 9 +- 6 2 7825 11 Mar 05 18:35 LAG1 8 0 5 3 +- 50 0 +- 34 2 7825 12 Mar 05 05:27 LAG2 5 0 2 -3 +- 46 7 +- 69 1 7825 12 Mar 05 06:43 LAG1 19 0 5 -2 +- 10 2 +- 5 3 7825 12 Mar 05 09:23 LAG2 21 0 20 6 +- 9 11 +- 6 2 7825 12 Mar 05 10:09 LAG1 13 0 8 -8 +- 11 0 +- 11 1 7825 12 Mar 05 13:33 LAG1 12 0 10 0 +- 15 -8 +- 12 1 7825 12 Mar 05 16:53 LAG1 14 0 17 -16 +- 11 -4 +- 8 3 7825 13 Mar 05 03:24 LAG2 12 1 22 -5 +- 31 -10 +- 22 10 7825 13 Mar 05 05:15 LAG1 20 1 17 0 +- 9 -6 +- 5 11 7825 13 Mar 05 07:25 LAG2 22 0 26 13 +- 9 -19 +- 6 4 7825 13 Mar 05 08:57 LAG1 13 1 17 -1 +- 15 -12 +- 13 2 7825 13 Mar 05 11:23 LAG2 19 0 6 3 +- 9 0 +- 6 5 7825 13 Mar 05 12:11 LAG1 5 0 4 7 +- 48 4 +- 57 3 7825 13 Mar 05 15:29 LAG1 21 0 15 -8 +- 9 7 +- 5 4 7825 13 Mar 05 19:23 LAG1 5 0 12 8 +- 59 3 +- 77 4 7825 14 Mar 05 01:13 LAG2 19 0 10 9 +- 11 0 +- 7 5 7825 14 Mar 05 04:05 LAG1 8 0 21 7 +- 20 11 +- 16 3 7825 14 Mar 05 05:39 LAG2 4 0 11 12 +- 24 -15 +- 98 2 7825 14 Mar 05 07:35 LAG1 15 0 16 11 +- 13 3 +- 8 5 7825 14 Mar 05 09:57 LAG2 11 0 37 3 +- 43 17 +- 22 2 7825 14 Mar 05 14:13 LAG1 17 0 4 3 +- 11 0 +- 7 3 7825 14 Mar 05 18:13 LAG1 3 0 11 -13 +- 746 11 +- 329 0 7825 15 Mar 05 06:09 LAG1 19 0 10 -10 +- 10 2 +- 5 4 7825 15 Mar 05 07:37 LAG2 17 0 9 3 +- 10 -4 +- 6 4 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 8 Mar 05 03:05 LAG1 8 0 10 -8 +- 42 -13 +- 37 3 7832 8 Mar 05 03:21 LAG2 8 0 12 -7 +- 27 7 +- 34 2 7832 8 Mar 05 10:01 LAG1 5 0 6 -15 +- 193 10 +- 100 1 7832 8 Mar 05 20:55 LAG2 15 0 12 -1 +- 17 -5 +- 10 7 7832 8 Mar 05 22:19 LAG1 11 0 21 21 +- 21 2 +- 27 2 7832 9 Mar 05 01:21 LAG2 6 0 3 0 +- 55 -2 +- 93 2 7832 9 Mar 05 01:39 LAG1 8 0 6 -18 +- 93 -9 +- 45 4 7832 9 Mar 05 05:25 LAG2 21 0 12 -10 +- 14 0 +- 10 7 7832 11 Mar 05 23:27 LAG2 11 0 12 15 +- 27 7 +- 34 2 7832 12 Mar 05 01:10 LAG1 5 0 19 -2 +- 148 -11 +- 80 1 7832 14 Mar 05 00:07 LAG2 6 0 16 -6 +- 124 17 +- 109 9 7832 15 Mar 05 00:43 LAG1 11 0 5 -4 +- 20 0 +- 17 3 7832 15 Mar 05 02:09 LAG2 10 0 5 -1 +- 21 4 +- 35 4 7832 15 Mar 05 06:15 LAG2 7 0 19 3 +- 37 -22 +- 52 1 7832 15 Mar 05 23:09 LAG1 11 0 15 3 +- 43 10 +- 25 2 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 8 Mar 05 21:09 LAG2 7 0 13 14 +- 44 -2 +- 63 1 7835 9 Mar 05 22:49 LAG2 5 0 13 30 +- 880 7 +- 347 1 7835 10 Mar 05 03:01 LAG2 14 0 15 22 +- 37 12 +- 28 2 7835 10 Mar 05 03:45 LAG1 4 0 23 108 +-1480 30 +- 526 0 7835 11 Mar 05 02:53 LAG1 6 0 26 31 +- 181 -3 +- 102 1 Station 7837 (Shanghai Observatory) (position fixed, acc. 50 mm) 7837 8 Mar 05 13:35 LAG2 10 0 55 56 +- 57 -3 +- 66 6 7837 9 Mar 05 15:27 LAG2 20 0 26 15 +- 34 11 +- 21 6 7837 9 Mar 05 19:47 LAG2 10 0 25 24 +- 49 -11 +- 61 4 7837 9 Mar 05 20:35 LAG1 14 0 22 19 +- 44 3 +- 30 3 7837 12 Mar 05 17:59 LAG2 18 0 15 8 +- 37 -11 +- 32 7 7837 12 Mar 05 19:57 LAG1 10 0 16 6 +- 48 -7 +- 25 4 7837 13 Mar 05 12:05 LAG2 10 0 15 -9 +- 49 -17 +- 79 8 7837 13 Mar 05 15:55 LAG2 22 0 15 1 +- 33 -8 +- 20 6 7837 13 Mar 05 18:29 LAG1 21 0 31 15 +- 33 14 +- 19 7 7837 13 Mar 05 20:18 LAG2 16 0 12 -3 +- 41 0 +- 39 12 7837 14 Mar 05 18:13 LAG2 19 0 15 -14 +- 36 3 +- 30 6 7837 14 Mar 05 20:51 LAG1 12 0 27 12 +- 51 11 +- 37 12 7837 15 Mar 05 12:13 LAG2 15 0 14 6 +- 39 10 +- 40 8 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 13 Mar 05 05:59 LAG1 20 0 8 5 +- 22 -2 +- 13 5 7838 13 Mar 05 12:01 LAG2 21 0 44 41 +- 21 -12 +- 14 16 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 8 Mar 05 06:35 LAG1 3 0 1 -9 +- 224 -5 +- 140 0 7839 8 Mar 05 09:54 LAG1 4 0 0 -2 +- 180 -1 +- 92 0 7839 8 Mar 05 17:29 LAG1 3 0 8 -6 +- 139 -3 +- 245 0 7839 8 Mar 05 20:51 LAG2 9 0 16 12 +- 14 -4 +- 7 1 7839 10 Mar 05 14:11 LAG1 12 0 12 -5 +- 12 -5 +- 7 2 7839 11 Mar 05 05:17 LAG2 19 0 15 0 +- 9 -10 +- 6 1 7839 11 Mar 05 05:56 LAG1 19 0 7 -7 +- 9 2 +- 5 1 7839 13 Mar 05 19:39 LAG2 12 0 11 -11 +- 15 1 +- 11 2 7839 13 Mar 05 23:29 LAG2 19 0 11 -2 +- 10 5 +- 4 1 7839 14 Mar 05 01:55 LAG1 9 0 15 0 +- 14 9 +- 8 2 7839 14 Mar 05 03:51 LAG2 18 0 14 10 +- 16 2 +- 9 2 7839 14 Mar 05 05:23 LAG1 10 0 7 7 +- 15 4 +- 10 1 7839 14 Mar 05 12:22 LAG1 12 0 8 -7 +- 13 0 +- 7 2 7839 14 Mar 05 21:27 LAG2 8 0 7 -3 +- 15 -3 +- 7 1 7839 15 Mar 05 00:21 LAG1 6 0 17 10 +- 23 18 +- 19 2 7839 15 Mar 05 01:45 LAG2 4 0 2 2 +- 122 4 +- 88 0 7839 15 Mar 05 07:51 LAG1 8 0 6 16 +- 54 -5 +- 29 1 7839 15 Mar 05 10:49 LAG1 17 0 9 -8 +- 10 0 +- 5 0 7839 15 Mar 05 14:27 LAG1 16 0 2 0 +- 10 0 +- 7 1 7839 15 Mar 05 19:39 LAG2 18 0 5 0 +- 10 3 +- 7 1 7839 15 Mar 05 23:09 LAG1 10 0 12 -4 +- 13 24 +- 25 1 7839 15 Mar 05 23:37 LAG2 5 0 9 -2 +- 35 4 +- 20 0 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 10 Mar 05 21:17 LAG2 8 0 19 16 +- 24 -11 +- 34 0 7840 12 Mar 05 07:23 LAG2 19 0 15 15 +- 15 0 +- 11 2 7840 12 Mar 05 08:19 LAG1 11 0 10 12 +- 24 -2 +- 20 2 7840 12 Mar 05 21:29 LAG2 14 0 19 -2 +- 17 -20 +- 18 1 7840 13 Mar 05 01:25 LAG2 20 0 15 1 +- 16 -10 +- 10 2 7840 13 Mar 05 03:23 LAG1 13 0 23 22 +- 21 -15 +- 13 5 7840 13 Mar 05 06:47 LAG1 17 0 24 16 +- 16 -10 +- 9 6 7840 13 Mar 05 10:41 LAG1 4 0 30 4 +- 331 -16 +- 159 0 7840 14 Mar 05 21:37 LAG2 9 0 4 4 +- 24 2 +- 25 2 7840 15 Mar 05 01:33 LAG2 13 0 4 1 +- 19 2 +- 10 2 7840 15 Mar 05 04:05 LAG1 20 0 22 18 +- 15 -8 +- 8 8 7840 15 Mar 05 05:37 LAG2 24 0 14 11 +- 13 -6 +- 8 4 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 9 Mar 05 23:02 LAG2 18 0 16 -16 +- 9 -1 +- 6 4 7841 10 Mar 05 03:02 LAG2 23 1 27 14 +- 9 5 +- 5 19 7841 10 Mar 05 04:01 LAG1 10 0 5 -2 +- 19 0 +- 12 4 7841 10 Mar 05 07:07 LAG2 11 0 19 35 +- 24 17 +- 18 1 7841 10 Mar 05 07:29 LAG1 9 1 16 -17 +- 17 15 +- 19 6 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 9 Mar 05 22:59 LAG2 18 0 7 3 +- 10 4 +- 7 3 7941 10 Mar 05 00:35 LAG1 8 0 21 -22 +- 34 1 +- 32 1 7941 10 Mar 05 07:30 LAG2 2 0 38 27 +- 33 15 +- 32 0 7941 10 Mar 05 21:05 LAG2 13 0 22 0 +- 12 -14 +- 8 1 7941 11 Mar 05 09:33 LAG2 6 0 24 -23 +- 17 -10 +- 58 5 7941 11 Mar 05 13:15 LAG1 3 0 29 7 +- 342 9 +- 154 2 7941 11 Mar 05 23:17 LAG2 18 0 5 -4 +- 10 1 +- 6 3 7941 12 Mar 05 01:23 LAG1 11 0 8 -5 +- 25 8 +- 17 2 7941 12 Mar 05 03:17 LAG2 12 0 20 3 +- 12 9 +- 6 7 7941 12 Mar 05 04:53 LAG1 7 0 6 7 +- 20 -3 +- 22 1 7941 12 Mar 05 07:31 LAG2 15 0 3 3 +- 11 0 +- 10 1 7941 12 Mar 05 21:57 LAG2 3 0 57 26 +- 620 -34 +- 261 4 7941 12 Mar 05 23:47 LAG1 6 0 9 -3 +- 38 10 +- 60 1 7941 13 Mar 05 01:33 LAG2 8 0 7 -9 +- 18 -11 +- 26 2 7941 13 Mar 05 03:27 LAG1 8 0 17 8 +- 15 -15 +- 12 2 7941 13 Mar 05 19:39 LAG2 5 0 20 -15 +- 42 8 +- 68 2 7941 13 Mar 05 23:55 LAG2 9 0 7 -21 +- 74 7 +- 36 1 7941 14 Mar 05 05:37 LAG1 9 0 3 3 +- 16 -1 +- 17 2 7941 14 Mar 05 07:42 LAG2 14 0 8 2 +- 11 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 - 050303 0/ 20/ 0 0/ 24/ 0 44 1831 LVIL 040815 - 050303 0/ 25/ 0 0/ 31/ 0 56 1864 MD2LAS 040701 - 050310 0/ 88/ 0 0/ 78/ 0 166 1873 SIMLAS 040703 - 040813 0/ 25/ 0 0/ 15/ 0 40 1884 RIGLAS 040712 - 050316 0/ 43/ 1 0/ 27/ 2 73 1893 CRMLAS 040705 - 041012 0/ 45/ 0 0/ 35/ 0 80 6405 TIGO 040710 - 050209 10/ 13/ 1 6/ 18/ 1 49 6810 ZIMLAT 040805 - 050209 188/116/ 21 111/108/ 19 563 7080 MLRS25 040701 - 050312 54/ 62/ 4 51/ 77/ 6 254 7090 ML0514 040716 - 050312 135/380/ 35 116/253/ 28 947 7105 ML0725 040701 - 050315 0/ 86/ 4 2/104/ 7 203 7110 ML0414 040701 - 050315 74/131/ 17 78/138/ 18 456 7124 ML0819 040705 - 050126 0/ 31/ 0 0/ 14/ 0 45 7231 WUHA01 040701 - 041208 0/ 8/ 0 0/ 20/ 0 28 7237 CHALAS 040702 - 050314 0/146/ 1 0/158/ 1 306 7249 BEJLAS 040701 - 050315 0/102/ 0 0/123/ 0 225 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 - 050209 5/ 28/ 0 3/ 10/ 0 46 7501 ML0616 040701 - 050311 21/ 35/ 3 58/ 76/ 6 199 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 - 050209 242/142/ 27 136/127/ 23 697 7811 POLLAS 040706 - 050315 0/ 54/ 0 0/ 64/ 0 118 7824 SPNLAS 040701 - 050316 0/106/ 0 0/ 99/ 0 205 7825 STL3 040807 - 050315 135/202/ 36 129/143/ 23 668 7832 SALRO 040702 - 050316 144/217/ 19 185/252/ 23 840 7835 GRASSE 040702 - 050311 0/ 49/ 2 0/ 38/ 2 91 7836 GFZLAS 040701 - 040701 0/ 1/ 0 0/ 0/ 0 1 7837 CHILAS 040704 - 050315 0/ 96/ 0 0/133/ 2 231 7838 SHOLAS 040701 - 050313 59/120/ 4 80/146/ 7 416 7839 AUSLAS 040701 - 050316 193/172/ 29 91/162/ 23 670 7840 RGOLAS 040701 - 050316 132/103/ 24 80/ 94/ 14 447 7841 GFZLA3 040702 - 050310 44/ 60/ 15 25/ 65/ 8 217 7845 GRASLL 040705 - 040920 11/ 14/ 0 3/ 12/ 1 41 7941 MLROnn 040701 - 050314 91/ 64/ 10 77/ 72/ 6 320 8834 WLRS01 040701 - 050304 205/137/ 26 129/143/ 19 659 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050309.0 7.3 +/- 0.2 219.4 +/- 0.2 -32613.94 +/- 0.02 050310.0 3.6 +/- 0.1 219.2 +/- 0.1 -32615.68 +/- 0.03 050311.0 2.6 +/- 0.1 220.9 +/- 0.1 -32617.23 +/- 0.05 050312.0 0.1 +/- 0.1 220.7 +/- 0.1 -32618.96 +/- 0.05 050313.0 -1.6 +/- 0.1 222.1 +/- 0.1 -32620.43 +/- 0.06 050314.0 -2.6 +/- 0.1 222.8 +/- 0.1 -32621.69 +/- 0.06 050315.0 -4.2 +/- 0.1 223.4 +/- 0.1 -32622.54 +/- 0.07 -------------------------------------------------------------- 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 ******************************************************************************** |