| Date: | 2005-09-01 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5919: Delft QL Report September 01, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-09-01 13:15:00 UTC Message No. 5919 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report September 01, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS September 1, 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 Thu, Sep 1, 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 Thu, Sep 1, 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 050829 - 050901 5 - 1884 Riga, Latvia 050830 - 050901 4 - 1893 Kazivili, Crimea, Ukraine 050829 - 050829 1 - 6405 Concepcion, Chile (TIGO 847) 050830 - 050901 2 4 6810 Zimmerwald 846, Switzerland 050829 - 050901 11 8 7110 Monument Peak, California 050830 - 050830 1 1 7124 Papeete, Tahiti 050830 - 050830 - 1 7237 Changchun, China 050830 - 050830 1 - 7405 Concepcion, Chile (TIGO 424) 050831 - 050831 1 - 7501 Hartebeesthoek, SA (MOB-6) 050830 - 050831 1 2 7810 Zimmerwald 423, Switzerland 050829 - 050901 11 8 7811 Borowiec, Poland 050830 - 050831 5 1 7825 Mount Stromlo, Australia 050829 - 050901 7 6 7832 Riyad, Saudi Arabia 050829 - 050831 7 4 7839 Graz, Austria 050829 - 050830 3 2 7840 Herstmonceux, United Kingdom 050829 - 050831 9 5 7841 Potsdam, Germany 050830 - 050831 3 - 7848 Ajaccio, Corsica (FTLRS) 050829 - 050901 4 1 7941 Matera, Italy (MLRO 532) 050901 - 050901 - 1 8834 Wettzell, Germany 050829 - 050901 12 7 ------ ------ --- --- TOTAL 050829 - 050901 88 51 ------------------------------------------------------------------------------ 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 Wed, Aug 24, 2005 to Thu, Sep 1, 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 29 19 Number of Passes 228/227 151/150 Number of Normal Points 2648/2612 1924/1908 Weighted RMS of Fit (mm) 13 11 ----------------------------------------------------------------------- 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 29 Aug 05 21:05 LAG1 8 0 151 -150 +- 424 -5 +- 286 14 1831 30 Aug 05 19:59 LAG1 6 0 29 -94 +-1751 48 +-1025 10 1831 30 Aug 05 23:17 LAG1 10 0 227 -206 +- 416 -39 +- 395 17 1831 31 Aug 05 21:55 LAG1 8 0 162 -168 +- 444 -43 +- 521 11 Station 1864 (Maidanak) (position fixed, acc. 200 mm) 1864 24 Aug 05 17:11 LAG1 11 0 22 10 +- 181 -6 +- 108 16 1864 25 Aug 05 15:48 LAG1 11 0 36 -29 +- 188 -5 +- 140 21 1864 26 Aug 05 17:59 LAG1 11 0 28 1 +- 184 1 +- 134 28 1864 28 Aug 05 15:12 LAG1 9 0 68 -52 +- 321 12 +- 234 12 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 25 Aug 05 19:25 LAG1 2 0 120 120 +- 424 -5 +- 166 0 1873 25 Aug 05 23:18 LAG1 3 0 113 177 +-4532 -33 +-2352 7 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 25 Aug 05 00:19 LAG1 13 0 19 6 +- 85 12 +- 65 3 1884 25 Aug 05 22:53 LAG1 16 0 11 3 +- 75 6 +- 49 3 1884 26 Aug 05 21:32 LAG1 15 0 19 14 +- 77 8 +- 52 5 1884 27 Aug 05 23:39 LAG1 18 0 17 7 +- 70 8 +- 42 7 1884 30 Aug 05 19:35 LAG1 19 0 11 -2 +- 69 2 +- 40 10 1884 30 Aug 05 23:13 LAG1 7 0 6 5 +- 149 1 +- 156 4 1884 31 Aug 05 21:43 LAG1 19 0 14 10 +- 68 2 +- 39 9 Station 1893 (Kazivili) (position fixed, acc. 100 mm) 1893 29 Aug 05 17:55 LAG1 6 0 104 24 +- 894 19 +- 392 78 Station 6405 (Concepcion) (position solved, acc. 20 mm) 6405 30 Aug 05 23:03 LAG2 9 0 3 2 +- 47 4 +- 39 2 6405 31 Aug 05 00:19 LAG1 18 0 4 3 +- 15 0 +- 9 2 6405 31 Aug 05 03:15 LAG2 20 0 7 0 +- 15 0 +- 10 7 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 24 Aug 05 08:32 LAG1 9 0 12 -13 +- 89 -12 +- 63 3 6810 24 Aug 05 10:04 LAG2 8 0 16 -6 +- 71 1 +- 55 15 6810 24 Aug 05 14:05 LAG2 12 0 23 0 +- 66 -13 +- 38 3 6810 24 Aug 05 17:19 LAG1 3 0 23 -23 +- 107 0 +- 111 1 6810 24 Aug 05 20:51 LAG1 15 0 7 -4 +- 47 1 +- 27 3 6810 26 Aug 05 10:37 LAG2 5 0 6 -15 +- 606 5 +- 342 2 6810 28 Aug 05 10:27 LAG2 6 0 13 -6 +- 103 5 +- 72 3 6810 28 Aug 05 14:25 LAG2 5 0 24 2 +- 461 17 +- 306 1 6810 28 Aug 05 18:43 LAG1 14 0 8 -5 +- 49 -1 +- 25 6 6810 28 Aug 05 22:19 LAG1 18 0 7 -4 +- 43 1 +- 23 6 6810 29 Aug 05 01:47 LAG1 15 0 14 -14 +- 47 0 +- 25 2 6810 29 Aug 05 04:13 LAG2 26 0 14 0 +- 36 -7 +- 20 4 6810 29 Aug 05 05:08 LAG1 24 0 19 -13 +- 38 -4 +- 18 4 6810 29 Aug 05 08:19 LAG2 19 0 11 -1 +- 49 -6 +- 29 3 6810 29 Aug 05 08:53 LAG1 7 0 6 -5 +- 75 0 +- 77 3 6810 29 Aug 05 12:39 LAG2 10 0 19 0 +- 62 -11 +- 37 3 6810 29 Aug 05 21:34 LAG1 5 0 20 6 +- 692 5 +- 264 2 6810 30 Aug 05 00:47 LAG1 10 0 6 -1 +- 95 4 +- 71 4 6810 30 Aug 05 02:27 LAG2 21 0 10 -9 +- 40 0 +- 28 4 6810 30 Aug 05 03:51 LAG1 25 0 11 -10 +- 36 1 +- 18 4 6810 30 Aug 05 06:21 LAG2 25 0 16 -10 +- 36 5 +- 19 5 6810 30 Aug 05 07:29 LAG1 17 0 4 -2 +- 46 -1 +- 25 2 6810 30 Aug 05 10:31 LAG2 23 0 11 -8 +- 38 -1 +- 21 6 6810 30 Aug 05 14:35 LAG2 12 0 10 -7 +- 52 4 +- 33 3 6810 30 Aug 05 19:33 LAG1 17 0 13 -9 +- 44 -2 +- 19 7 6810 30 Aug 05 23:09 LAG1 20 0 8 -4 +- 41 3 +- 22 4 6810 31 Aug 05 02:35 LAG1 17 0 7 0 +- 44 0 +- 25 7 6810 31 Aug 05 04:27 LAG2 28 0 11 -10 +- 34 -2 +- 18 4 6810 31 Aug 05 05:56 LAG1 21 0 14 -2 +- 42 -5 +- 20 5 6810 31 Aug 05 08:33 LAG2 21 0 23 -11 +- 40 -11 +- 20 5 6810 31 Aug 05 21:47 LAG1 18 0 9 -6 +- 43 2 +- 21 4 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 26 Aug 05 03:10 LAG1 15 0 18 16 +- 17 -4 +- 11 7 7080 26 Aug 05 06:52 LAG1 5 0 9 13 +- 65 -6 +- 81 4 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 24 Aug 05 11:15 LAG2 19 0 9 3 +- 9 -6 +- 7 2 7090 24 Aug 05 14:19 LAG1 10 0 6 0 +- 26 4 +- 25 3 7090 24 Aug 05 15:33 LAG2 6 0 2 -11 +- 168 -8 +- 101 0 7090 25 Aug 05 09:29 LAG1 6 0 15 -3 +- 35 11 +- 22 2 7090 25 Aug 05 09:45 LAG2 9 0 5 -15 +- 50 10 +- 30 2 7090 25 Aug 05 12:45 LAG1 18 0 6 -2 +- 11 3 +- 7 3 7090 25 Aug 05 13:45 LAG2 15 0 8 -3 +- 12 -6 +- 15 1 7090 25 Aug 05 17:49 LAG2 24 0 13 -3 +- 8 8 +- 5 3 7090 26 Aug 05 07:47 LAG2 4 0 22 -17 +- 38 -9 +- 77 4 7090 26 Aug 05 11:21 LAG1 15 0 24 -7 +- 10 16 +- 7 1 7090 26 Aug 05 11:49 LAG2 15 0 15 17 +- 20 -20 +- 15 4 7090 26 Aug 05 15:49 LAG2 19 0 1 0 +- 9 0 +- 6 1 7090 26 Aug 05 20:02 LAG2 5 0 4 -6 +- 30 -4 +- 35 0 7090 27 Aug 05 09:43 LAG2 12 0 9 -9 +- 12 3 +- 13 0 7090 27 Aug 05 10:11 LAG1 12 0 23 -21 +- 21 22 +- 13 1 7090 27 Aug 05 13:23 LAG1 10 0 8 11 +- 37 10 +- 23 1 7090 27 Aug 05 13:59 LAG2 13 0 7 4 +- 12 -6 +- 12 0 7090 27 Aug 05 18:05 LAG2 25 0 7 -7 +- 8 0 +- 5 1 7090 28 Aug 05 08:53 LAG1 6 0 13 -3 +- 28 20 +- 37 1 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 24 Aug 05 05:43 LAG1 4 0 5 15 +- 78 10 +- 75 1 7105 24 Aug 05 08:57 LAG1 12 0 10 -9 +- 14 1 +- 12 2 7105 24 Aug 05 09:22 LAG2 18 0 3 0 +- 10 0 +- 7 3 7105 25 Aug 05 04:11 LAG1 24 0 5 3 +- 8 0 +- 4 3 7105 25 Aug 05 07:25 LAG2 19 0 9 0 +- 10 8 +- 9 2 7105 25 Aug 05 08:01 LAG1 5 0 3 12 +- 86 -10 +- 59 0 7105 25 Aug 05 10:53 LAG1 18 0 4 0 +- 13 -2 +- 6 2 7105 25 Aug 05 11:29 LAG2 21 0 10 -7 +- 9 -1 +- 6 6 7105 25 Aug 05 14:55 LAG1 7 0 9 0 +- 34 -5 +- 40 7 7105 25 Aug 05 15:47 LAG2 17 0 8 -10 +- 12 3 +- 9 2 7105 26 Aug 05 06:26 LAG1 6 0 12 16 +- 35 4 +- 37 1 7105 29 Aug 05 07:59 LAG2 13 0 6 1 +- 11 1 +- 12 5 7105 29 Aug 05 09:05 LAG1 14 0 10 2 +- 12 7 +- 8 4 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 24 Aug 05 05:55 LAG1 3 0 1 4 +- 266 1 +- 131 0 7110 24 Aug 05 09:25 LAG1 3 0 4 0 +- 69 8 +- 128 0 7110 24 Aug 05 12:41 LAG1 3 0 17 -46 +- 168 -27 +- 151 1 7110 24 Aug 05 13:17 LAG2 3 0 8 -28 +- 79 -61 +- 186 2 7110 24 Aug 05 16:25 LAG1 6 1 24 -6 +- 82 -12 +- 56 2 7110 25 Aug 05 04:27 LAG1 14 0 1 0 +- 16 0 +- 9 1 7110 25 Aug 05 08:01 LAG1 8 0 8 0 +- 14 -1 +- 12 7 7110 25 Aug 05 11:09 LAG2 7 0 6 -6 +- 57 -1 +- 37 5 7110 25 Aug 05 14:49 LAG1 4 0 8 7 +- 58 0 +- 58 1 7110 25 Aug 05 15:27 LAG2 3 0 15 -17 +- 28 -23 +- 73 3 7110 26 Aug 05 03:29 LAG1 11 0 13 10 +- 35 -12 +- 18 1 7110 26 Aug 05 06:39 LAG1 13 0 3 1 +- 11 1 +- 8 3 7110 26 Aug 05 09:37 LAG2 2 0 27 -28 +- 33 9 +- 120 0 7110 26 Aug 05 10:20 LAG1 2 0 8 -34 +- 175 43 +- 190 0 7110 26 Aug 05 22:03 LAG2 8 0 8 -4 +- 52 -1 +- 31 5 7110 27 Aug 05 12:05 LAG1 6 0 12 -9 +- 18 6 +- 11 4 7110 29 Aug 05 12:47 LAG1 15 0 9 -8 +- 11 -1 +- 6 2 7110 29 Aug 05 20:05 LAG2 7 0 25 -28 +- 31 -4 +- 31 0 7110 30 Aug 05 04:45 LAG1 12 0 6 1 +- 16 -2 +- 10 4 7110 30 Aug 05 08:17 LAG1 9 0 6 -5 +- 14 0 +- 15 2 7110 30 Aug 05 09:47 LAG2 11 0 12 -7 +- 12 6 +- 10 4 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 24 Aug 05 06:37 LAG1 17 0 15 3 +- 13 -10 +- 7 2 7124 24 Aug 05 08:17 LAG2 10 0 13 8 +- 15 19 +- 38 2 7124 24 Aug 05 12:13 LAG2 22 0 20 17 +- 9 -3 +- 4 6 7124 26 Aug 05 07:17 LAG1 12 0 16 -19 +- 14 -7 +- 13 1 7124 26 Aug 05 08:37 LAG2 2 0 11 -10 +- 161 -106 +- 778 0 7124 30 Aug 05 09:02 LAG2 3 0 8 38 +- 148 60 +- 203 0 Station 7130 (Greenbelt) (position fixed, acc. 10 mm) 7130 25 Aug 05 04:17 LAG1 20 0 5 4 +- 9 0 +- 5 4 7130 25 Aug 05 07:39 LAG2 12 0 6 4 +- 12 3 +- 18 2 7130 25 Aug 05 08:06 LAG1 2 0 11 122 +- 728 -77 +- 426 0 7130 25 Aug 05 11:03 LAG1 7 0 13 6 +- 39 -4 +- 25 3 7130 25 Aug 05 11:29 LAG2 14 0 7 -2 +- 11 0 +- 7 6 7130 25 Aug 05 15:51 LAG2 14 0 4 -2 +- 16 1 +- 12 4 7130 26 Aug 05 06:25 LAG1 2 0 6 -116 +- 839 -76 +- 528 0 7130 29 Aug 05 08:07 LAG2 8 1 8 5 +- 16 6 +- 34 5 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 30 Aug 05 12:25 LAG1 11 0 19 12 +- 63 4 +- 38 7 Station 7358 (Tanegashima) (position solved, acc. 10 mm) 7358 26 Aug 05 10:47 LAG1 16 0 11 -7 +- 12 7 +- 6 1 7358 26 Aug 05 14:11 LAG1 17 0 11 0 +- 10 -7 +- 6 1 7358 27 Aug 05 12:55 LAG1 13 0 3 2 +- 12 0 +- 7 2 Station 7405 (Concepcion) (position solved, acc. 20 mm) 7405 31 Aug 05 00:31 LAG1 3 0 6 -6 +- 67 0 +- 177 0 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 24 Aug 05 08:21 LAG1 3 0 21 180 +- 478 -74 +- 221 7 7501 24 Aug 05 19:00 LAG2 8 0 25 -10 +- 15 23 +- 17 2 7501 24 Aug 05 23:21 LAG2 6 0 10 25 +- 76 12 +- 56 1 7501 25 Aug 05 03:25 LAG2 4 0 3 11 +- 111 15 +- 124 0 7501 27 Aug 05 17:31 LAG1 2 0 18 17 +- 353 -1 +- 584 0 7501 30 Aug 05 17:11 LAG1 5 0 16 42 +- 153 -11 +- 69 1 7501 30 Aug 05 19:49 LAG2 4 0 5 15 +- 225 19 +- 204 1 7501 31 Aug 05 00:09 LAG2 10 0 8 5 +- 13 2 +- 8 4 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 24 Aug 05 08:33 LAG1 7 0 17 35 +- 198 12 +- 110 4 7810 24 Aug 05 10:04 LAG2 10 0 26 -18 +- 92 -2 +- 55 15 7810 24 Aug 05 14:05 LAG2 11 0 20 -1 +- 66 -11 +- 39 3 7810 24 Aug 05 17:19 LAG1 3 0 25 -25 +- 107 0 +- 110 0 7810 24 Aug 05 20:51 LAG1 16 0 11 -10 +- 45 1 +- 25 2 7810 26 Aug 05 10:37 LAG2 5 0 16 -25 +- 600 5 +- 338 1 7810 28 Aug 05 10:27 LAG2 7 0 14 -8 +- 98 4 +- 73 4 7810 28 Aug 05 14:25 LAG2 4 0 29 -11 +- 486 11 +- 316 3 7810 28 Aug 05 18:45 LAG1 16 0 16 -12 +- 49 -3 +- 25 5 7810 28 Aug 05 22:19 LAG1 19 0 14 -13 +- 42 0 +- 21 7 7810 29 Aug 05 01:49 LAG1 15 0 24 -23 +- 47 -1 +- 25 2 7810 29 Aug 05 04:11 LAG2 26 0 13 -7 +- 37 -7 +- 21 4 7810 29 Aug 05 05:17 LAG1 23 0 26 -20 +- 39 -5 +- 19 3 7810 29 Aug 05 08:19 LAG2 22 0 17 -13 +- 40 -8 +- 23 4 7810 29 Aug 05 08:54 LAG1 6 0 17 -17 +- 76 -3 +- 100 2 7810 29 Aug 05 12:39 LAG2 9 0 24 -8 +- 63 -13 +- 40 2 7810 29 Aug 05 21:34 LAG1 5 0 18 12 +- 700 2 +- 253 1 7810 30 Aug 05 00:47 LAG1 9 0 5 -5 +- 97 5 +- 80 3 7810 30 Aug 05 02:31 LAG2 16 0 9 -8 +- 46 0 +- 37 4 7810 30 Aug 05 03:51 LAG1 24 0 14 -13 +- 37 0 +- 18 3 7810 30 Aug 05 06:21 LAG2 26 0 11 -7 +- 35 3 +- 19 4 7810 30 Aug 05 07:25 LAG1 19 0 7 -4 +- 43 -1 +- 22 4 7810 30 Aug 05 10:31 LAG2 23 0 10 -8 +- 38 -1 +- 21 6 7810 30 Aug 05 14:35 LAG2 12 0 11 -8 +- 52 3 +- 33 4 7810 30 Aug 05 19:33 LAG1 15 0 13 -12 +- 47 -1 +- 22 5 7810 30 Aug 05 23:09 LAG1 19 0 9 -5 +- 41 3 +- 23 4 7810 31 Aug 05 02:35 LAG1 13 0 6 0 +- 53 2 +- 35 5 7810 31 Aug 05 04:27 LAG2 27 0 14 -12 +- 35 -2 +- 19 5 7810 31 Aug 05 05:57 LAG1 23 0 16 -5 +- 39 -5 +- 18 5 7810 31 Aug 05 08:35 LAG2 19 0 24 -13 +- 42 -11 +- 22 5 7810 31 Aug 05 21:49 LAG1 18 0 8 -6 +- 43 1 +- 21 5 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 27 Aug 05 01:08 LAG1 13 0 15 14 +- 53 -1 +- 41 6 7811 30 Aug 05 00:30 LAG1 14 0 20 18 +- 49 4 +- 37 7 7811 30 Aug 05 02:43 LAG2 10 0 52 51 +- 66 8 +- 81 21 7811 30 Aug 05 19:39 LAG1 16 0 27 26 +- 45 3 +- 30 5 7811 30 Aug 05 23:11 LAG1 14 0 23 21 +- 49 1 +- 37 10 7811 31 Aug 05 02:39 LAG1 12 0 37 36 +- 54 -2 +- 44 5 7811 31 Aug 05 21:47 LAG1 15 0 58210 31 +- 47 -35996 +- 29 11*CHK* Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 25 Aug 05 19:45 LAG1 14 0 75 81 +- 39 -7 +- 27 6 7824 25 Aug 05 23:11 LAG1 12 0 85 83 +- 38 2 +- 25 8 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 24 Aug 05 00:08 LAG1 18 0 6 -4 +- 9 -1 +- 5 2 7825 24 Aug 05 03:53 LAG1 7 0 5 3 +- 36 -1 +- 35 5 7825 24 Aug 05 07:01 LAG1 14 0 7 5 +- 11 -3 +- 9 3 7825 24 Aug 05 07:27 LAG2 21 0 11 7 +- 9 5 +- 6 4 7825 24 Aug 05 10:23 LAG1 18 0 4 3 +- 9 0 +- 5 2 7825 24 Aug 05 11:33 LAG2 16 0 13 -14 +- 12 -10 +- 9 2 7825 24 Aug 05 15:43 LAG2 22 0 1 0 +- 8 0 +- 4 1 7825 24 Aug 05 22:47 LAG1 20 1 16 6 +- 9 7 +- 4 6 7825 25 Aug 05 02:21 LAG1 12 1 18 6 +- 15 9 +- 15 11 7825 25 Aug 05 05:33 LAG2 14 0 9 2 +- 11 4 +- 6 5 7825 25 Aug 05 06:01 LAG1 4 0 9 0 +- 134 5 +- 89 1 7825 25 Aug 05 09:09 LAG1 18 0 5 -4 +- 11 0 +- 6 3 7825 25 Aug 05 09:43 LAG2 22 0 3 0 +- 9 0 +- 7 3 7825 25 Aug 05 13:51 LAG2 27 0 8 -6 +- 8 3 +- 5 3 7825 25 Aug 05 17:55 LAG2 16 0 16 0 +- 13 14 +- 11 3 7825 25 Aug 05 21:37 LAG1 17 0 12 8 +- 12 2 +- 7 5 7825 26 Aug 05 01:11 LAG1 14 0 9 -8 +- 15 0 +- 10 4 7825 26 Aug 05 04:30 LAG1 7 0 36 -43 +- 21 41 +- 24 15 7825 26 Aug 05 07:37 LAG2 10 0 9 7 +- 13 2 +- 6 5 7825 26 Aug 05 07:47 LAG1 14 0 7 7 +- 11 0 +- 8 2 7825 26 Aug 05 11:13 LAG1 13 0 14 13 +- 11 5 +- 8 2 7825 26 Aug 05 11:51 LAG2 19 0 17 5 +- 9 -10 +- 7 3 7825 26 Aug 05 15:58 LAG2 18 0 10 9 +- 10 1 +- 5 3 7825 26 Aug 05 20:09 LAG1 9 0 27 26 +- 16 0 +- 17 3 7825 26 Aug 05 23:33 LAG1 18 0 9 1 +- 10 -3 +- 5 5 7825 27 Aug 05 03:06 LAG1 14 0 20 7 +- 11 -14 +- 10 12 7825 27 Aug 05 05:44 LAG2 20 0 4 0 +- 9 2 +- 6 3 7825 27 Aug 05 06:23 LAG1 14 0 4 0 +- 11 -3 +- 8 2 7825 27 Aug 05 09:45 LAG1 15 0 12 3 +- 15 8 +- 9 2 7825 27 Aug 05 10:23 LAG2 10 0 14 27 +- 66 -23 +- 38 3 7825 27 Aug 05 14:15 LAG2 21 0 3 -3 +- 10 1 +- 6 1 7825 27 Aug 05 18:21 LAG2 15 0 5 -1 +- 12 6 +- 13 3 7825 27 Aug 05 22:15 LAG1 22 0 11 -9 +- 9 -1 +- 4 4 7825 28 Aug 05 01:47 LAG1 17 0 11 -9 +- 10 -2 +- 7 5 7825 28 Aug 05 04:11 LAG2 8 0 6 -4 +- 16 4 +- 34 4 7825 28 Aug 05 05:07 LAG1 15 1 14 -12 +- 11 -2 +- 10 4 7825 28 Aug 05 08:01 LAG2 16 0 8 3 +- 10 5 +- 9 2 7825 28 Aug 05 08:33 LAG1 19 0 13 3 +- 10 5 +- 5 2 7825 28 Aug 05 12:07 LAG2 20 0 3 -1 +- 9 0 +- 6 2 7825 28 Aug 05 16:11 LAG2 24 0 8 0 +- 8 4 +- 4 3 7825 28 Aug 05 20:59 LAG1 18 0 15 -10 +- 10 -5 +- 7 3 7825 29 Aug 05 00:35 LAG1 8 0 11 -8 +- 15 -13 +- 20 1 7825 29 Aug 05 06:00 LAG2 18 0 8 5 +- 9 2 +- 7 5 7825 29 Aug 05 07:13 LAG1 15 0 6 2 +- 11 0 +- 8 5 7825 29 Aug 05 10:20 LAG2 3 0 16 1 +- 88 -25 +- 144 1 7825 29 Aug 05 10:39 LAG1 19 0 25 9 +- 9 16 +- 6 3 7825 29 Aug 05 14:19 LAG2 18 0 10 -3 +- 11 -7 +- 7 3 7825 29 Aug 05 18:39 LAG2 2 0 16 66 +- 619 186 +-2294 0 7825 31 Aug 05 06:15 LAG2 19 0 5 -3 +- 9 0 +- 7 3 7825 31 Aug 05 07:49 LAG1 21 0 9 -5 +- 9 -2 +- 5 7 7825 31 Aug 05 11:36 LAG1 2 0 15 40 +- 95 36 +- 117 0 7825 31 Aug 05 14:33 LAG2 27 0 5 -2 +- 8 -1 +- 4 3 7825 31 Aug 05 20:19 LAG1 18 0 15 5 +- 9 10 +- 8 7 7825 31 Aug 05 23:49 LAG1 6 0 6 -5 +- 128 -1 +- 55 5 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 24 Aug 05 01:19 LAG1 11 0 23 -16 +- 23 9 +- 24 2 7832 24 Aug 05 01:43 LAG2 13 0 5 -10 +- 44 -4 +- 25 2 7832 24 Aug 05 04:41 LAG1 9 0 9 0 +- 61 -4 +- 33 3 7832 24 Aug 05 06:28 LAG2 5 0 11 13 +- 133 -2 +- 128 4 7832 24 Aug 05 17:17 LAG1 12 0 19 -11 +- 22 -12 +- 12 6 7832 27 Aug 05 00:25 LAG2 11 0 11 -2 +- 28 -8 +- 25 3 7832 27 Aug 05 04:07 LAG1 7 0 12 7 +- 118 -1 +- 56 7 7832 27 Aug 05 04:25 LAG2 6 0 3 -5 +- 46 -5 +- 77 1 7832 27 Aug 05 13:13 LAG2 4 0 9 -59 +- 403 37 +- 225 1 7832 27 Aug 05 16:53 LAG1 7 0 6 2 +- 41 4 +- 38 5 7832 27 Aug 05 20:17 LAG1 10 0 10 9 +- 27 0 +- 28 3 7832 27 Aug 05 22:25 LAG2 8 0 12 11 +- 23 4 +- 29 2 7832 28 Aug 05 02:27 LAG2 7 0 13 -15 +- 32 -6 +- 47 2 7832 28 Aug 05 02:43 LAG1 9 0 20 -38 +- 89 -9 +- 42 2 7832 28 Aug 05 06:37 LAG1 6 0 35 33 +- 56 1 +- 75 6 7832 28 Aug 05 15:27 LAG1 10 0 8 3 +- 20 -4 +- 19 5 7832 28 Aug 05 18:53 LAG1 10 0 10 -3 +- 20 -4 +- 11 5 7832 29 Aug 05 00:31 LAG2 11 0 4 1 +- 20 -3 +- 23 3 7832 29 Aug 05 01:29 LAG1 11 0 7 -5 +- 29 -7 +- 24 3 7832 29 Aug 05 05:11 LAG1 5 0 12 13 +- 32 -17 +- 66 2 7832 29 Aug 05 17:29 LAG1 11 0 8 -13 +- 54 -4 +- 25 6 7832 29 Aug 05 21:17 LAG1 3 0 8 9 +- 132 0 +- 282 0 7832 29 Aug 05 22:41 LAG2 8 0 22 23 +- 25 6 +- 53 1 7832 30 Aug 05 02:27 LAG2 15 0 17 -8 +- 26 6 +- 18 3 7832 30 Aug 05 03:33 LAG1 6 0 9 -8 +- 168 -6 +- 75 5 7832 30 Aug 05 07:19 LAG2 5 0 8 9 +- 176 -2 +- 144 5 7832 30 Aug 05 16:13 LAG1 10 0 7 6 +- 21 -1 +- 15 2 7832 30 Aug 05 19:47 LAG1 7 0 10 -16 +- 42 -9 +- 46 1 7832 31 Aug 05 00:39 LAG2 11 0 7 -2 +- 29 3 +- 25 5 7832 31 Aug 05 02:29 LAG1 9 0 16 13 +- 32 2 +- 28 4 7832 31 Aug 05 05:59 LAG1 9 0 18 17 +- 30 -1 +- 33 6 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 26 Aug 05 03:03 LAG2 13 0 48 48 +- 27 -1 +- 24 6 7838 26 Aug 05 07:22 LAG2 7 0 23 30 +- 148 -4 +- 98 2 7838 26 Aug 05 10:41 LAG1 16 0 31 28 +- 24 6 +- 16 7 7838 26 Aug 05 14:07 LAG1 17 0 41 35 +- 23 -11 +- 14 11 7838 27 Aug 05 12:46 LAG1 19 0 46 45 +- 22 -2 +- 12 8 7838 27 Aug 05 16:18 LAG1 11 0 55 57 +- 30 -11 +- 35 8 7838 27 Aug 05 18:43 LAG2 22 0 53 53 +- 21 20 +- 13 4 7838 27 Aug 05 19:30 LAG1 15 0 59 59 +- 24 2 +- 19 6 7838 28 Aug 05 18:21 LAG1 10 0 49 45 +- 33 3 +- 36 13 7838 29 Aug 05 01:28 LAG2 9 0 37 31 +- 50 7 +- 53 5 7838 29 Aug 05 13:37 LAG1 6 0 42 32 +- 54 -7 +- 32 5 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 24 Aug 05 20:57 LAG1 6 0 2 2 +- 27 2 +- 28 1 7839 25 Aug 05 07:09 LAG1 17 0 4 0 +- 11 -3 +- 7 1 7839 25 Aug 05 08:05 LAG2 15 0 6 2 +- 10 5 +- 9 0 7839 25 Aug 05 11:59 LAG2 23 0 10 1 +- 8 -4 +- 4 5 7839 29 Aug 05 04:31 LAG2 9 0 11 2 +- 14 -7 +- 10 1 7839 29 Aug 05 08:19 LAG2 14 0 12 0 +- 13 -6 +- 6 0 7839 29 Aug 05 09:08 LAG1 4 0 1 -1 +- 21 -1 +- 112 1 7839 29 Aug 05 12:37 LAG2 6 0 20 5 +- 18 -11 +- 12 1 7839 29 Aug 05 17:29 LAG1 19 0 13 7 +- 10 5 +- 7 2 7839 30 Aug 05 00:27 LAG1 8 0 6 6 +- 29 7 +- 18 1 7839 30 Aug 05 03:53 LAG1 9 0 5 -2 +- 14 1 +- 6 2 7839 30 Aug 05 06:45 LAG2 6 0 2 0 +- 21 3 +- 34 0 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 24 Aug 05 01:43 LAG1 17 0 11 -4 +- 16 7 +- 10 1 7840 24 Aug 05 05:25 LAG1 8 0 3 5 +- 49 -2 +- 29 2 7840 24 Aug 05 05:50 LAG2 5 0 5 17 +- 104 9 +- 67 2 7840 25 Aug 05 07:17 LAG1 16 0 7 5 +- 17 -1 +- 11 3 7840 25 Aug 05 07:57 LAG2 17 0 17 11 +- 16 7 +- 9 4 7840 25 Aug 05 12:01 LAG2 11 0 12 7 +- 20 -5 +- 13 3 7840 25 Aug 05 19:27 LAG1 16 0 13 5 +- 16 -8 +- 13 2 7840 25 Aug 05 22:57 LAG1 17 0 9 9 +- 17 2 +- 10 3 7840 26 Aug 05 02:25 LAG1 20 0 5 0 +- 14 0 +- 8 5 7840 26 Aug 05 09:47 LAG1 6 0 15 -16 +- 30 3 +- 77 2 7840 26 Aug 05 10:17 LAG2 9 0 5 4 +- 24 -1 +- 15 3 7840 26 Aug 05 21:43 LAG1 11 0 11 10 +- 20 0 +- 10 4 7840 27 Aug 05 01:07 LAG1 17 0 6 4 +- 16 2 +- 9 3 7840 27 Aug 05 20:11 LAG1 17 0 9 1 +- 16 -3 +- 8 4 7840 27 Aug 05 23:45 LAG1 15 0 10 8 +- 17 2 +- 9 5 7840 28 Aug 05 06:13 LAG2 17 0 13 5 +- 17 10 +- 12 2 7840 28 Aug 05 06:47 LAG1 14 0 4 2 +- 17 0 +- 12 3 7840 28 Aug 05 10:17 LAG2 11 0 15 8 +- 46 13 +- 28 2 7840 28 Aug 05 14:23 LAG2 8 0 12 -5 +- 49 7 +- 44 2 7840 28 Aug 05 18:53 LAG1 11 0 15 9 +- 20 -7 +- 14 3 7840 28 Aug 05 22:23 LAG1 14 0 12 4 +- 17 -4 +- 7 7 7840 29 Aug 05 01:53 LAG1 17 0 9 4 +- 16 -4 +- 9 3 7840 29 Aug 05 04:25 LAG2 18 0 10 9 +- 15 -3 +- 11 2 7840 29 Aug 05 05:19 LAG1 20 0 9 0 +- 14 -4 +- 8 2 7840 29 Aug 05 08:23 LAG2 15 0 12 8 +- 17 -4 +- 10 4 7840 29 Aug 05 09:03 LAG1 6 0 10 -6 +- 67 4 +- 76 1 7840 29 Aug 05 12:31 LAG2 14 0 23 5 +- 17 -14 +- 10 5 7840 29 Aug 05 21:01 LAG1 14 0 18 8 +- 18 8 +- 8 4 7840 30 Aug 05 00:33 LAG1 19 0 10 6 +- 15 4 +- 9 3 7840 30 Aug 05 02:39 LAG2 13 0 7 5 +- 18 3 +- 22 3 7840 30 Aug 05 03:57 LAG1 20 0 7 6 +- 14 0 +- 8 3 7840 30 Aug 05 06:33 LAG2 19 0 16 8 +- 15 7 +- 10 5 7840 30 Aug 05 07:31 LAG1 10 0 8 5 +- 21 4 +- 12 3 7840 30 Aug 05 10:31 LAG2 11 0 11 22 +- 46 9 +- 28 2 7840 30 Aug 05 14:37 LAG2 8 1 2 1 +- 55 0 +- 55 2 7840 30 Aug 05 19:41 LAG1 16 0 11 9 +- 18 -5 +- 11 4 7840 30 Aug 05 23:11 LAG1 17 0 12 11 +- 16 0 +- 8 5 7840 31 Aug 05 02:41 LAG1 17 0 22 22 +- 16 -2 +- 9 4 7840 31 Aug 05 04:41 LAG2 17 0 6 5 +- 16 1 +- 12 2 7840 31 Aug 05 06:07 LAG1 21 0 14 8 +- 14 -5 +- 7 6 7840 31 Aug 05 21:49 LAG1 15 0 15 13 +- 17 -1 +- 9 6 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 25 Aug 05 00:23 LAG1 8 0 12 -5 +- 19 6 +- 20 5 7841 29 Aug 05 08:27 LAG2 11 1 6 2 +- 29 -2 +- 19 2 7841 30 Aug 05 19:41 LAG1 15 0 5 4 +- 12 -2 +- 6 2 7841 31 Aug 05 06:25 LAG1 10 0 11 -16 +- 28 11 +- 18 8 7841 31 Aug 05 21:45 LAG1 19 0 4 0 +- 9 -1 +- 4 2 Station 7848 (Ajaccio) (position solved, acc. 30 mm) 7848 29 Aug 05 04:29 LAG2 9 0 4 2 +- 33 0 +- 38 3 7848 29 Aug 05 21:17 LAG1 4 0 7 6 +- 99 15 +- 120 1 7848 30 Aug 05 06:51 LAG2 3 0 7 -12 +- 204 25 +- 286 2 7848 30 Aug 05 20:01 LAG1 4 0 6 -3 +- 64 -3 +- 90 2 7848 31 Aug 05 22:08 LAG1 2 0 4 4 +- 70 -3 +- 125 0 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 24 Aug 05 06:01 LAG2 5 0 4 1 +- 33 5 +- 50 3 7941 25 Aug 05 08:05 LAG2 12 0 7 5 +- 14 8 +- 14 1 7941 25 Aug 05 22:59 LAG1 12 0 1 -1 +- 14 0 +- 12 1 7941 26 Aug 05 02:07 LAG2 19 0 9 0 +- 9 -7 +- 8 1 7941 26 Aug 05 06:05 LAG2 6 0 5 -5 +- 24 0 +- 14 1 7941 26 Aug 05 10:13 LAG2 8 0 4 -9 +- 61 -3 +- 35 2 7941 26 Aug 05 18:11 LAG1 13 0 10 -1 +- 11 -5 +- 7 3 7941 26 Aug 05 21:47 LAG1 6 0 4 2 +- 17 1 +- 14 1 7941 27 Aug 05 01:21 LAG1 6 0 4 0 +- 48 3 +- 39 2 7941 27 Aug 05 04:11 LAG2 6 0 3 -7 +- 81 -6 +- 50 2 7941 27 Aug 05 04:49 LAG1 7 0 8 -6 +- 77 0 +- 36 2 7941 27 Aug 05 08:13 LAG1 3 0 20 21 +- 31 10 +- 196 1 7941 27 Aug 05 08:25 LAG2 3 0 8 14 +- 154 19 +- 136 0 7941 27 Aug 05 20:21 LAG1 5 0 11 10 +- 91 0 +- 52 0 7941 27 Aug 05 23:51 LAG1 9 0 5 2 +- 14 4 +- 16 3 7941 28 Aug 05 22:35 LAG1 9 0 7 0 +- 15 -5 +- 10 1 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 24 Aug 05 20:57 LAG1 5 0 10 1 +- 21 8 +- 19 6 8834 25 Aug 05 00:23 LAG1 3 0 23 -12 +- 95 9 +- 76 1 8834 26 Aug 05 21:59 LAG1 4 0 3 0 +- 100 0 +- 64 3 8834 27 Aug 05 01:17 LAG1 2 0 24 11 +- 77 125 +- 282 0 8834 27 Aug 05 08:23 LAG2 3 0 19 -15 +- 211 2 +- 164 0 8834 28 Aug 05 10:21 LAG2 4 0 31 6 +- 253 17 +- 113 2 8834 28 Aug 05 14:27 LAG2 4 0 24 -38 +- 141 -11 +- 112 3 8834 28 Aug 05 19:17 LAG1 9 0 25 1 +- 66 -11 +- 29 5 8834 28 Aug 05 22:35 LAG1 9 0 10 -8 +- 18 0 +- 10 5 8834 29 Aug 05 02:03 LAG1 2 0 14 -36 +- 130 -73 +- 403 0 8834 29 Aug 05 04:21 LAG2 22 0 15 -7 +- 8 -6 +- 5 7 8834 29 Aug 05 05:21 LAG1 8 0 21 -17 +- 15 -4 +- 9 4 8834 29 Aug 05 08:42 LAG2 7 0 17 -12 +- 17 -5 +- 13 5 8834 29 Aug 05 13:05 LAG2 3 0 39 -81 +- 424 20 +- 207 0 8834 29 Aug 05 17:30 LAG1 7 0 14 -5 +- 29 11 +- 34 1 8834 29 Aug 05 20:55 LAG1 9 0 29 -13 +- 17 8 +- 8 5 8834 30 Aug 05 00:33 LAG1 5 0 14 -5 +- 56 6 +- 41 2 8834 30 Aug 05 04:03 LAG1 9 0 11 -9 +- 14 2 +- 11 7 8834 30 Aug 05 06:25 LAG2 25 0 12 -3 +- 8 4 +- 4 9 8834 30 Aug 05 07:33 LAG1 5 0 8 3 +- 88 7 +- 63 4 8834 30 Aug 05 10:35 LAG2 21 0 8 2 +- 9 3 +- 5 5 8834 30 Aug 05 14:38 LAG2 6 0 11 -14 +- 52 -3 +- 50 4 8834 30 Aug 05 19:33 LAG1 11 0 12 -12 +- 12 -1 +- 5 2 8834 30 Aug 05 23:15 LAG1 7 0 9 -7 +- 18 4 +- 8 3 8834 31 Aug 05 02:45 LAG1 8 0 5 0 +- 14 0 +- 15 4 8834 31 Aug 05 04:29 LAG2 31 0 14 -8 +- 7 -1 +- 3 10 8834 31 Aug 05 06:25 LAG1 11 0 17 5 +- 31 -8 +- 15 12 8834 31 Aug 05 21:44 LAG1 15 0 8 -6 +- 11 0 +- 5 6 -------------------------------------------------------------------------------- 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 - 050901 0/ 37/ 0 0/ 20/ 0 57 1864 MD2LAS 050110 - 050828 0/ 92/ 0 0/ 46/ 0 138 1873 SIMLAS 050316 - 050825 0/ 33/ 0 0/ 14/ 0 47 1884 RIGLAS 050104 - 050901 0/ 58/ 0 3/ 42/ 3 106 1893 CRMLAS 050723 - 050829 0/ 13/ 0 0/ 0/ 0 13 6405 TIGO 050104 - 050901 7/ 20/ 2 8/ 25/ 2 64 6810 ZIMLAT 050101 - 050901 227/147/ 25 204/ 73/ 20 696 7080 MLRS25 050101 - 050826 39/ 73/ 4 27/ 68/ 10 221 7090 ML0514 050101 - 050828 125/385/ 33 112/316/ 28 999 7105 ML0725 050108 - 050829 5/ 63/ 7 18/ 59/ 6 158 7110 ML0414 050118 - 050830 90/140/ 24 58/112/ 13 437 7124 ML0819 050118 - 050830 1/ 33/ 0 1/ 16/ 1 52 7130 TL0425 050825 - 050829 1/ 3/ 0 2/ 2/ 0 8 7237 CHALAS 050102 - 050830 0/ 63/ 1 0/ 71/ 0 135 7249 BEJLAS 050101 - 050820 0/ 71/ 0 0/ 70/ 0 141 7308 CRLLAS 050111 - 050510 7/ 5/ 1 1/ 10/ 0 24 7355 TROS02 050603 - 050821 0/ 42/ 0 0/ 7/ 0 49 7358 GMSL 050802 - 050827 0/ 7/ 0 2/ 0/ 0 9 7405 TIGO 050105 - 050831 5/ 27/ 0 3/ 7/ 0 42 7501 ML0616 050117 - 050831 42/117/ 4 40/100/ 7 310 7806 METLAS 050301 - 050301 0/ 0/ 0 0/ 1/ 0 1 7810 ZIMLAT 050101 - 050901 204/146/ 24 198/ 67/ 19 658 7811 POLLAS 050111 - 050831 0/ 65/ 0 0/ 40/ 0 105 7824 SPNLAS 050108 - 050825 5/115/ 1 2/ 92/ 3 218 7825 STL3 050101 - 050901 287/347/ 36 187/281/ 31 1169 7832 SALRO 050101 - 050831 97/211/ 19 133/191/ 23 674 7835 GRASSE 050104 - 050705 0/ 32/ 2 0/ 33/ 3 70 7837 CHILAS 050102 - 050414 0/ 22/ 0 0/ 40/ 1 63 7838 SHOLAS 050106 - 050829 48/ 88/ 2 38/ 80/ 6 262 7839 AUSLAS 050103 - 050830 166/121/ 20 123/ 91/ 13 534 7840 RGOLAS 050102 - 050831 201/145/ 29 160/ 91/ 22 648 7841 GFZLA3 050105 - 050831 48/ 58/ 12 21/ 61/ 8 208 7848 FTLR06 050515 - 050901 4/ 34/ 1 4/ 11/ 1 55 7941 MLROnn 050102 - 050901 61/119/ 7 95/ 93/ 20 395 8834 WLRS01 050109 - 050901 171/147/ 23 166/104/ 20 631 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050825.0 37.1 +/- 0.1 428.3 +/- 0.1 -32651.39 +/- 0.01 050826.0 38.4 +/- 0.1 428.2 +/- 0.1 -32651.39 +/- 0.02 050827.0 39.6 +/- 0.1 427.3 +/- 0.1 -32651.09 +/- 0.02 050828.0 40.7 +/- 0.1 426.8 +/- 0.1 -32650.61 +/- 0.03 050829.0 41.8 +/- 0.1 426.5 +/- 0.1 -32650.07 +/- 0.03 050830.0 42.0 +/- 0.1 425.5 +/- 0.1 -32649.49 +/- 0.04 050831.0 42.3 +/- 0.1 425.8 +/- 0.1 -32649.05 +/- 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 ******************************************************************************** |