| Date: | 2005-05-06 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5295: Delft QL Report May 06, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-05-06 13:15:00 UTC Message No. 5295 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report May 06, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS May 6, 2005 This is a daily report, presenting the results of a continuing analysis of the most recent global LAGEOS-1 and LAGEOS-2 quick-look laser ranging data. The report consists of (A) a pass summary, (B) an overview of the analysis results, detailed statistics of the analysed measurements, and an accumulative pass overview and (C) the earth rotation parameter solutions submitted to IERS. The report is based on all quick-look data as received until Fri, May 6, 2005. Questions and comments should be addressed to: R. Noomen Delft University of Technology Faculty of Aerospace Engineering Delft Institute for Earth-Oriented Space Research Kluyverweg 1 2629 HS Delft The Netherlands Telephone: +31-15-2785377 Telefax : +31-15-2785322 E-mail : ron.noomen@deos.tudelft.nl A. PASS SUMMARY The table below gives an overview of the ranging data both on LAGEOS-1 and LAGEOS-2, as received by the Quick-Look Data Analysis Center (QLDAC) on Fri, May 6, 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 ------------------------------------------------------------------------------ 1864 Maidanak, Uzbekistan (site 2) 050427 - 050427 1 1 1873 Simeiz, Crimea, Ukraine 050425 - 050504 2 5 1884 Riga, Latvia 050426 - 050501 1 3 6405 Concepcion, Chile (TIGO 847) 050426 - 050426 1 1 6810 Zimmerwald 846, Switzerland 050422 - 050504 20 14 7090 Yarragadee, Australia 050504 - 050504 1 - 7110 Monument Peak, California 050504 - 050504 1 1 7249 Beijing, China 050426 - 050505 3 6 7810 Zimmerwald 423, Switzerland 050422 - 050504 6 9 7811 Borowiec, Poland 050426 - 050505 2 3 7824 San Fernando, Spain 050425 - 050506 2 8 7825 Mount Stromlo, Australia 050328 - 050505 78 58 7832 Riyad, Saudi Arabia 050426 - 050502 9 14 7835 Grasse, France 050426 - 050504 2 5 7839 Graz, Austria 050421 - 050504 15 14 7840 Herstmonceux, United Kingdom 050426 - 050505 8 6 7841 Potsdam, Germany 050426 - 050502 3 2 7941 Matera, Italy (MLRO 532) 050426 - 050504 7 12 8834 Wettzell, Germany 050426 - 050506 10 14 ------ ------ --- --- TOTAL 050328 - 050506 172 176 ------------------------------------------------------------------------------ B. ANALYSIS RESULTS The analysis is based on two orbit solutions using global quick-look normal points that cover a period of 8 days which are computed simultaneously. This week´s data interval runs from Thu, Apr 28, 2005 to Fri, May 6, 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 21 21 Number of Passes 127/126 123/123 Number of Normal Points 1330/1274 1484/1460 Weighted RMS of Fit (mm) 11 10 ----------------------------------------------------------------------- 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 29 Apr 05 19:11 LAG2 6 0 80 -20 +- 490 38 +- 366 38 1864 30 Apr 05 17:13 LAG2 11 0 29 -9 +- 189 3 +- 175 27 1864 30 Apr 05 20:11 LAG1 10 0 39 69 +- 388 39 +- 252 20 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 3 May 05 23:49 LAG1 2 0 130 689 +-9999 -218 +-5244 0 1873 4 May 05 21:44 LAG2 4 0 446 571 +- 646 259 +- 923 155 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 29 Apr 05 22:55 LAG2 15 0 35 21 +- 80 -1 +- 65 27 1884 30 Apr 05 01:10 LAG1 13 0 29 25 +- 86 -3 +- 64 11 1884 1 May 05 23:11 LAG2 18 0 36 34 +- 73 3 +- 53 4 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 28 Apr 05 07:33 LAG1 10 0 15 -18 +- 72 4 +- 54 4 6810 29 Apr 05 09:37 LAG1 9 0 45 -35 +- 61 -17 +- 45 2 6810 29 Apr 05 12:59 LAG1 4 0 20 25 +-1457 2 +- 668 2 6810 29 Apr 05 14:49 LAG2 9 0 5 4 +- 75 1 +- 81 3 6810 29 Apr 05 18:35 LAG2 25 0 16 -12 +- 36 6 +- 20 2 6810 29 Apr 05 22:43 LAG2 22 0 22 -19 +- 39 -5 +- 20 3 6810 30 Apr 05 01:09 LAG1 13 0 22 -14 +- 57 4 +- 25 7 6810 30 Apr 05 02:47 LAG2 21 0 27 -16 +- 40 -13 +- 27 6 6810 30 Apr 05 04:41 LAG1 17 0 29 -18 +- 49 9 +- 29 2 6810 30 Apr 05 08:07 LAG1 17 0 17 -16 +- 45 1 +- 28 5 6810 30 Apr 05 11:29 LAG1 18 0 43 -26 +- 45 -10 +- 18 6 6810 30 Apr 05 16:57 LAG2 19 0 9 -5 +- 48 -3 +- 31 3 6810 30 Apr 05 20:45 LAG2 23 0 11 -8 +- 39 2 +- 24 2 6810 30 Apr 05 23:44 LAG1 19 0 18 -17 +- 41 4 +- 24 4 6810 1 May 05 00:51 LAG2 22 0 29 -10 +- 41 -13 +- 22 6 6810 1 May 05 03:17 LAG1 25 0 28 -17 +- 36 9 +- 17 2 6810 1 May 05 05:07 LAG2 8 0 27 -22 +- 81 -15 +- 164 1 6810 1 May 05 06:47 LAG1 16 0 23 -15 +- 47 8 +- 28 3 6810 1 May 05 10:12 LAG1 14 0 21 -16 +- 63 -2 +- 28 4 6810 1 May 05 13:47 LAG1 7 0 19 -9 +- 69 -7 +- 40 7 6810 1 May 05 18:51 LAG2 25 0 13 -8 +- 37 6 +- 20 3 6810 1 May 05 22:32 LAG1 8 0 19 -19 +- 64 -1 +- 63 4 6810 1 May 05 22:57 LAG2 21 0 11 -8 +- 42 -1 +- 24 6 6810 2 May 05 01:55 LAG1 19 0 20 -19 +- 42 3 +- 18 3 6810 2 May 05 03:03 LAG2 21 0 8 -2 +- 40 -3 +- 28 5 6810 2 May 05 05:29 LAG1 17 0 20 -14 +- 44 7 +- 25 4 6810 2 May 05 09:11 LAG1 10 0 8 -1 +- 91 -3 +- 62 4 6810 4 May 05 10:05 LAG1 5 0 22 -20 +- 234 -1 +- 133 2 6810 4 May 05 13:37 LAG1 11 0 19 -1 +- 130 -11 +- 86 2 6810 4 May 05 17:59 LAG2 1 0 27 0 +- 0 0 +- 0 0 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 28 Apr 05 06:04 LAG2 9 0 3 -1 +- 27 1 +- 31 3 7080 28 Apr 05 08:07 LAG1 17 0 18 12 +- 16 -3 +- 10 11 7080 28 Apr 05 10:35 LAG2 11 0 5 3 +- 66 -4 +- 37 3 7080 29 Apr 05 04:09 LAG2 7 0 6 -3 +- 34 0 +- 55 6 7080 30 Apr 05 02:15 LAG2 14 0 25 -4 +- 26 -14 +- 18 4 7080 1 May 05 07:37 LAG1 16 0 27 18 +- 18 6 +- 10 6 7080 1 May 05 08:30 LAG2 22 0 11 4 +- 14 5 +- 9 4 7080 1 May 05 11:16 LAG1 2 0 2 1 +- 73 -4 +- 235 0 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 28 Apr 05 00:27 LAG2 6 0 6 21 +- 92 -13 +- 67 4 7090 28 Apr 05 12:56 LAG1 7 0 14 2 +- 22 16 +- 25 5 7090 28 Apr 05 16:15 LAG1 20 0 60 -14 +- 10 32 +- 5 7 7090 30 Apr 05 13:39 LAG1 18 0 10 -1 +- 10 7 +- 7 2 7090 30 Apr 05 17:06 LAG1 4 0 44 -14 +- 21 20 +- 11 2 7090 30 Apr 05 18:34 LAG2 8 0 16 -21 +- 21 20 +- 43 1 7090 2 May 05 14:33 LAG1 9 0 12 -12 +- 14 6 +- 17 1 7090 2 May 05 18:07 LAG1 6 0 9 -11 +- 20 9 +- 36 1 7090 4 May 05 08:41 LAG1 10 0 6 1 +- 13 5 +- 14 4 7090 4 May 05 12:07 LAG1 6 0 4 -7 +- 41 4 +- 46 0 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 28 Apr 05 01:57 LAG2 14 0 9 1 +- 11 -4 +- 5 3 7105 28 Apr 05 04:25 LAG1 14 0 10 8 +- 11 3 +- 10 3 7105 1 May 05 23:03 LAG2 4 0 13 207 +- 535 -87 +- 218 6 7105 2 May 05 02:53 LAG2 4 0 4 6 +- 45 -7 +- 39 1 7105 3 May 05 00:29 LAG2 26 0 10 2 +- 8 -5 +- 4 2 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 30 Apr 05 08:57 LAG1 14 0 12 8 +- 12 -6 +- 6 6 7110 30 Apr 05 10:17 LAG2 10 0 6 -1 +- 13 -4 +- 9 2 7110 30 Apr 05 12:39 LAG1 7 0 6 7 +- 19 -8 +- 27 1 7110 30 Apr 05 15:57 LAG1 5 0 11 7 +- 21 4 +- 57 7 7110 2 May 05 16:45 LAG1 6 0 11 12 +- 35 0 +- 38 0 7110 2 May 05 19:55 LAG1 16 0 8 -7 +- 11 3 +- 5 2 7110 3 May 05 08:35 LAG1 11 0 6 6 +- 17 0 +- 9 2 7110 3 May 05 09:09 LAG2 6 0 2 9 +- 113 -4 +- 56 1 7110 3 May 05 11:55 LAG1 7 0 6 -2 +- 16 -2 +- 8 3 7110 3 May 05 12:45 LAG2 9 0 3 1 +- 19 0 +- 33 2 7110 3 May 05 18:39 LAG1 12 0 14 -6 +- 13 9 +- 8 3 7110 4 May 05 02:35 LAG2 4 0 6 0 +- 21 4 +- 15 1 7110 4 May 05 06:43 LAG2 8 0 10 3 +- 14 7 +- 10 3 7110 4 May 05 10:33 LAG1 2 0 9 -520 +-2956 -216 +-1248 0 7110 4 May 05 10:52 LAG2 2 0 9 -3 +- 45 6 +- 40 0 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 28 Apr 05 08:49 LAG1 6 0 14 5 +- 28 -8 +- 23 3 7124 28 Apr 05 12:35 LAG1 7 0 9 1 +- 42 -8 +- 34 3 7124 29 Apr 05 10:57 LAG1 6 0 57 15 +- 49 -27 +- 31 6 7124 3 May 05 09:07 LAG1 12 0 37 40 +- 13 -12 +- 8 4 7124 4 May 05 07:45 LAG1 8 0 13 11 +- 14 4 +- 12 5 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 2 May 05 17:31 LAG1 6 0 14 -9 +- 80 1 +- 109 12 7249 5 May 05 12:25 LAG2 9 0 18 -4 +- 312 9 +- 150 10 7249 5 May 05 16:03 LAG2 14 3 2022 -2022 +- 51 0 +- 55 8*CHK* 7249 5 May 05 16:43 LAG1 14 0 13 -5 +- 41 4 +- 30 11 7249 5 May 05 20:13 LAG2 5 1 25 58 +- 437 30 +- 368 8 7249 5 May 05 20:21 LAG1 3 0 28 61 +- 410 78 +- 380 2 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 29 Apr 05 22:43 LAG2 15 0 6 -2 +- 52 -1 +- 32 5 7810 30 Apr 05 01:09 LAG1 14 0 12 0 +- 55 6 +- 27 3 7810 30 Apr 05 02:47 LAG2 15 0 17 -3 +- 48 -12 +- 38 4 7810 30 Apr 05 20:45 LAG2 24 0 6 0 +- 37 3 +- 22 2 7810 30 Apr 05 23:44 LAG1 18 0 10 -6 +- 43 4 +- 25 3 7810 1 May 05 00:51 LAG2 19 0 21 0 +- 43 -11 +- 24 5 7810 1 May 05 03:19 LAG1 23 0 17 -5 +- 38 8 +- 19 2 7810 1 May 05 22:37 LAG1 10 0 5 -4 +- 61 1 +- 74 3 7810 1 May 05 22:57 LAG2 19 0 5 0 +- 43 0 +- 25 5 7810 2 May 05 01:55 LAG1 18 0 11 -7 +- 43 3 +- 19 4 7810 2 May 05 03:03 LAG2 22 0 9 3 +- 39 -3 +- 28 6 7810 4 May 05 17:59 LAG2 2 0 20 439 +-9999 -174 +-6611 0 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 28 Apr 05 23:01 LAG1 12 0 14 9 +- 52 6 +- 51 9 7811 5 May 05 19:32 LAG2 4 0 4 16 +- 391 11 +- 262 2 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 28 Apr 05 20:58 LAG2 3 0 12 -2 +- 820 -5 +- 487 2 7824 29 Apr 05 01:07 LAG2 4 0 34 52 +- 303 -16 +- 262 2 7824 30 Apr 05 21:11 LAG2 6 0 64 51 +- 282 7 +- 169 5 7824 3 May 05 23:29 LAG2 3 0 51 52 +- 97 1 +- 447 0 7824 4 May 05 21:17 LAG2 4 0 47 46 +- 62 -4 +- 67 6 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 28 Apr 05 00:31 LAG2 8 0 5 -2 +- 15 -10 +- 30 2 7825 28 Apr 05 02:25 LAG1 16 0 13 -15 +- 12 -7 +- 8 2 7825 28 Apr 05 04:27 LAG2 23 0 2 -1 +- 8 0 +- 4 1 7825 28 Apr 05 06:01 LAG1 17 0 8 6 +- 10 -3 +- 7 2 7825 28 Apr 05 12:47 LAG1 13 0 15 -15 +- 12 6 +- 6 4 7825 28 Apr 05 16:13 LAG1 7 0 18 -3 +- 57 10 +- 39 3 7825 28 Apr 05 18:21 LAG2 12 0 16 -1 +- 13 16 +- 14 5 7825 28 Apr 05 22:15 LAG2 19 0 19 19 +- 10 -10 +- 7 4 7825 29 Apr 05 01:11 LAG1 4 0 11 -32 +- 83 -38 +- 102 7 7825 29 Apr 05 02:38 LAG2 8 0 8 10 +- 49 1 +- 35 3 7825 29 Apr 05 04:43 LAG1 13 0 11 6 +- 11 -6 +- 9 3 7825 29 Apr 05 06:43 LAG2 19 0 15 -4 +- 9 12 +- 8 2 7825 29 Apr 05 08:07 LAG1 12 0 16 -8 +- 12 -12 +- 11 2 7825 29 Apr 05 11:27 LAG1 14 0 46 -34 +- 11 -14 +- 8 3 7825 29 Apr 05 14:45 LAG1 24 0 6 -4 +- 8 0 +- 4 4 7825 29 Apr 05 16:41 LAG2 6 0 13 12 +- 17 23 +- 66 2 7825 29 Apr 05 20:17 LAG2 21 1 45 28 +- 10 18 +- 6 34 7825 30 Apr 05 00:39 LAG2 11 0 13 11 +- 21 4 +- 22 11 7825 30 Apr 05 03:11 LAG1 13 0 6 -12 +- 24 -6 +- 13 2 7825 30 Apr 05 04:41 LAG2 27 0 7 1 +- 8 -3 +- 4 3 7825 30 Apr 05 10:09 LAG1 14 0 19 -12 +- 11 -11 +- 10 3 7825 30 Apr 05 13:25 LAG1 16 0 8 -1 +- 10 -3 +- 5 3 7825 1 May 05 05:25 LAG1 11 0 7 1 +- 22 5 +- 14 3 7825 1 May 05 06:57 LAG2 12 0 7 -6 +- 12 2 +- 11 1 7825 1 May 05 12:05 LAG1 15 0 12 -10 +- 10 -2 +- 6 2 7825 1 May 05 15:39 LAG1 17 0 9 1 +- 10 6 +- 7 2 7825 1 May 05 16:49 LAG2 6 0 5 -8 +- 29 -15 +- 64 2 7825 2 May 05 00:55 LAG2 12 0 7 0 +- 17 -7 +- 18 1 7825 2 May 05 04:19 LAG1 6 0 3 -2 +- 21 4 +- 19 0 7825 2 May 05 04:55 LAG2 26 0 8 5 +- 8 3 +- 4 2 7825 2 May 05 07:34 LAG1 15 0 2 1 +- 11 0 +- 9 2 7825 2 May 05 10:51 LAG1 15 0 11 6 +- 10 -7 +- 8 2 7825 2 May 05 14:11 LAG1 22 0 11 -1 +- 9 -3 +- 4 9 7825 2 May 05 18:44 LAG2 19 0 5 4 +- 11 -1 +- 7 3 7825 3 May 05 02:45 LAG1 6 1 5 1 +- 102 -1 +- 60 3 7825 3 May 05 03:00 LAG2 24 0 8 6 +- 8 -1 +- 5 4 7825 3 May 05 06:19 LAG1 5 0 7 1 +- 19 2 +- 20 6 7825 3 May 05 16:29 LAG1 8 0 13 14 +- 20 3 +- 17 5 7825 3 May 05 16:53 LAG2 13 0 5 -5 +- 15 -4 +- 17 3 7825 3 May 05 20:51 LAG2 14 3 4 -2 +- 25 0 +- 19 3 7825 4 May 05 11:43 LAG1 9 0 9 -7 +- 14 5 +- 17 4 7825 4 May 05 15:01 LAG1 19 1 9 0 +- 10 0 +- 6 9 7825 4 May 05 18:49 LAG2 14 1 3 4 +- 18 -1 +- 9 2 7825 5 May 05 03:31 LAG1 13 0 2 0 +- 12 -1 +- 8 1 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 29 Apr 05 14:53 LAG2 6 0 5 2 +- 26 1 +- 25 3 7832 29 Apr 05 21:47 LAG1 12 0 6 -6 +- 24 -2 +- 17 4 7832 29 Apr 05 23:17 LAG2 12 0 9 2 +- 25 -4 +- 22 5 7832 30 Apr 05 01:21 LAG1 8 0 5 5 +- 28 1 +- 37 2 7832 30 Apr 05 08:01 LAG1 10 0 4 0 +- 28 0 +- 23 3 7832 30 Apr 05 13:13 LAG2 9 0 14 16 +- 65 -1 +- 41 3 7832 30 Apr 05 16:55 LAG2 7 0 15 -27 +- 105 -9 +- 74 2 7832 30 Apr 05 20:21 LAG1 14 0 9 8 +- 24 8 +- 19 4 7832 30 Apr 05 21:17 LAG2 12 0 2 -2 +- 30 -1 +- 28 1 7832 1 May 05 00:07 LAG1 11 0 7 -8 +- 25 5 +- 20 3 7832 1 May 05 01:21 LAG2 9 0 19 -10 +- 39 -21 +- 30 2 7832 1 May 05 14:53 LAG2 9 0 9 -6 +- 96 -7 +- 49 3 7832 1 May 05 19:21 LAG2 9 0 4 0 +- 29 5 +- 48 1 7832 1 May 05 22:39 LAG1 11 0 12 -11 +- 21 -1 +- 17 3 7832 1 May 05 23:31 LAG2 11 0 6 -6 +- 28 -7 +- 24 2 7832 2 May 05 02:09 LAG1 6 0 5 -3 +- 29 1 +- 64 4 7832 2 May 05 13:07 LAG2 10 0 8 4 +- 32 4 +- 27 8 7832 2 May 05 17:19 LAG2 15 0 7 -4 +- 18 1 +- 19 6 7832 2 May 05 21:11 LAG1 11 0 7 -9 +- 35 -8 +- 23 2 7832 2 May 05 21:35 LAG2 10 0 7 10 +- 34 5 +- 33 3 7832 3 May 05 00:48 LAG1 7 0 4 -2 +- 33 -3 +- 44 3 7832 3 May 05 01:39 LAG2 10 0 15 -2 +- 28 -19 +- 34 4 7832 3 May 05 15:15 LAG2 14 0 6 -3 +- 18 -4 +- 16 3 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 28 Apr 05 00:27 LAG1 12 0 16 9 +- 46 14 +- 30 1 7835 3 May 05 23:37 LAG1 6 0 12 4 +- 71 10 +- 88 1 7835 3 May 05 23:49 LAG2 8 0 16 11 +- 264 2 +- 121 3 7835 4 May 05 21:17 LAG2 7 0 7 3 +- 36 -3 +- 21 1 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 28 Apr 05 03:09 LAG1 9 0 29 22 +- 35 4 +- 16 11 7838 28 Apr 05 09:11 LAG2 18 0 27 25 +- 23 1 +- 13 5 7838 28 Apr 05 13:22 LAG2 21 0 20 16 +- 21 4 +- 17 6 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 28 Apr 05 07:43 LAG1 5 0 4 1 +- 79 2 +- 52 0 7839 28 Apr 05 10:45 LAG1 14 0 10 5 +- 11 -4 +- 5 1 7839 28 Apr 05 14:51 LAG1 3 0 9 8 +- 119 1 +- 230 1 7839 28 Apr 05 16:47 LAG2 11 0 13 13 +- 12 3 +- 13 0 7839 28 Apr 05 20:43 LAG2 16 0 10 -5 +- 10 6 +- 6 0 7839 28 Apr 05 22:57 LAG1 13 0 11 -8 +- 13 4 +- 10 1 7839 29 Apr 05 00:41 LAG2 21 0 12 10 +- 9 -2 +- 6 1 7839 29 Apr 05 02:59 LAG1 12 0 7 3 +- 45 1 +- 18 2 7839 29 Apr 05 09:20 LAG1 10 0 40 -9 +- 13 -17 +- 5 1 7839 30 Apr 05 16:57 LAG2 14 0 12 12 +- 11 -1 +- 6 1 7839 2 May 05 03:11 LAG2 18 0 5 5 +- 10 -2 +- 9 1 7839 2 May 05 12:29 LAG1 12 0 12 3 +- 13 -7 +- 7 3 7839 2 May 05 17:11 LAG2 14 0 6 5 +- 11 -2 +- 6 0 7839 2 May 05 21:27 LAG2 8 0 16 10 +- 23 4 +- 15 1 7839 3 May 05 00:33 LAG1 17 0 8 0 +- 10 -3 +- 4 1 7839 3 May 05 01:11 LAG2 18 0 8 2 +- 9 -4 +- 6 1 7839 3 May 05 04:11 LAG1 18 0 10 -4 +- 9 6 +- 6 2 7839 4 May 05 17:14 LAG2 21 0 4 0 +- 9 -2 +- 5 1 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 1 May 05 07:03 LAG1 12 0 15 11 +- 21 4 +- 16 2 7840 1 May 05 10:47 LAG1 4 0 7 30 +- 280 -11 +- 139 0 7840 1 May 05 19:11 LAG2 2 0 9 7 +- 163 -8 +- 642 0 7840 2 May 05 09:17 LAG1 4 0 19 22 +- 60 -4 +- 90 0 7840 4 May 05 21:15 LAG2 17 0 6 4 +- 16 0 +- 8 4 7840 5 May 05 01:18 LAG2 15 0 11 9 +- 17 -3 +- 9 2 7840 5 May 05 01:25 LAG1 15 0 14 2 +- 17 -6 +- 8 3 7840 5 May 05 05:07 LAG1 10 0 7 -6 +- 20 0 +- 15 2 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 28 Apr 05 20:36 LAG2 22 0 6 1 +- 9 0 +- 5 6 7841 1 May 05 06:51 LAG1 11 2 44 2 +- 16 -29 +- 16 31 7841 2 May 05 05:47 LAG1 7 0 8 -13 +- 32 13 +- 26 2 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 28 Apr 05 00:35 LAG1 4 0 15 9 +- 107 15 +- 71 0 7941 28 Apr 05 07:31 LAG1 7 0 9 0 +- 16 7 +- 23 7 7941 28 Apr 05 11:13 LAG1 2 0 8 213 +- 828 -112 +- 432 0 7941 28 Apr 05 20:49 LAG2 12 0 16 -20 +- 14 5 +- 11 1 7941 29 Apr 05 02:35 LAG1 17 0 5 2 +- 11 -1 +- 6 2 7941 30 Apr 05 17:15 LAG2 4 0 5 14 +- 129 -6 +- 84 2 7941 30 Apr 05 21:32 LAG2 4 0 5 26 +- 279 -12 +- 126 4 7941 1 May 05 01:07 LAG2 9 0 14 -2 +- 27 -13 +- 21 1 7941 1 May 05 19:18 LAG2 9 0 11 -4 +- 42 7 +- 22 0 7941 1 May 05 22:31 LAG1 10 0 5 -7 +- 25 -3 +- 21 2 7941 1 May 05 23:12 LAG2 14 0 3 -2 +- 11 0 +- 9 2 7941 3 May 05 00:53 LAG1 4 0 4 -11 +- 60 -14 +- 62 0 7941 3 May 05 19:39 LAG2 8 0 3 -9 +- 70 5 +- 39 3 7941 3 May 05 23:43 LAG1 4 0 2 -6 +- 98 6 +- 74 0 7941 3 May 05 23:51 LAG2 11 0 6 3 +- 61 1 +- 29 2 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 28 Apr 05 07:45 LAG1 1 0 16 0 +- 0 0 +- 0 0 8834 28 Apr 05 14:48 LAG1 5 0 9 -10 +- 37 5 +- 79 3 8834 28 Apr 05 16:41 LAG2 8 0 13 9 +- 29 12 +- 22 8 8834 28 Apr 05 20:41 LAG2 15 0 10 0 +- 10 5 +- 6 3 8834 29 Apr 05 00:45 LAG2 13 0 8 -4 +- 11 -3 +- 7 5 8834 30 Apr 05 16:59 LAG2 10 0 5 -2 +- 13 -2 +- 10 3 8834 30 Apr 05 20:56 LAG2 3 0 14 1 +- 301 8 +- 159 2 8834 1 May 05 01:19 LAG2 5 0 12 -22 +- 44 16 +- 50 3 8834 1 May 05 10:51 LAG1 6 0 11 -48 +- 302 13 +- 108 3 8834 1 May 05 14:22 LAG1 2 0 14 -9 +- 428 -4 +- 399 0 8834 1 May 05 15:35 LAG2 4 0 3 -10 +- 192 4 +- 101 2 8834 1 May 05 19:06 LAG2 10 0 14 -10 +- 14 6 +- 7 6 8834 1 May 05 23:05 LAG2 13 0 16 -10 +- 11 1 +- 6 12 8834 2 May 05 02:15 LAG1 2 0 22 -176 +- 620 -226 +- 904 0 8834 2 May 05 03:27 LAG2 5 0 10 -4 +- 77 -3 +- 68 6 8834 2 May 05 05:55 LAG1 6 0 2 -9 +- 71 3 +- 30 1 8834 2 May 05 09:13 LAG1 6 0 8 -9 +- 35 13 +- 31 3 8834 2 May 05 12:51 LAG1 8 0 14 4 +- 50 -12 +- 32 2 8834 2 May 05 17:05 LAG2 3 0 7 -36 +- 450 -13 +- 211 1 8834 2 May 05 21:15 LAG2 9 0 11 -6 +- 16 5 +- 10 8 8834 3 May 05 01:00 LAG1 5 0 20 -25 +- 62 4 +- 44 3 8834 4 May 05 13:57 LAG1 3 0 10 88 +- 674 -50 +- 346 3 8834 4 May 05 17:24 LAG2 3 0 13 -39 +- 238 -16 +- 155 2 8834 5 May 05 19:47 LAG2 8 0 11 -19 +- 30 10 +- 18 6 8834 5 May 05 23:31 LAG2 13 0 7 -2 +- 17 -1 +- 12 7 -------------------------------------------------------------------------------- Distribution of daytime, nighttime and twilight passes since Jan 1, 2003: -------------------------------------------------------------------------- Station System Period Number of Passes LAGEOS-1 LAGEOS-2 Day/Night/Twil. Day/Night/Twil. Total -------------------------------------------------------------------------- 1824 KIEVLA 040701 - 050404 0/ 24/ 0 0/ 31/ 0 55 1831 LVIL 040815 - 050404 0/ 27/ 0 0/ 37/ 0 64 1864 MD2LAS 040701 - 050430 0/101/ 0 0/ 97/ 0 198 1873 SIMLAS 040703 - 050504 0/ 30/ 0 0/ 26/ 0 56 1884 RIGLAS 040712 - 050501 0/ 49/ 1 0/ 49/ 3 102 1893 CRMLAS 040705 - 041012 0/ 45/ 0 0/ 35/ 0 80 6405 TIGO 040710 - 050426 12/ 16/ 2 10/ 21/ 2 63 6810 ZIMLAT 040805 - 050504 211/124/ 22 118/122/ 21 618 7080 MLRS25 040701 - 050501 66/ 76/ 5 60/102/ 7 316 7090 ML0514 040716 - 050504 156/474/ 40 151/286/ 35 1142 7105 ML0725 040701 - 050503 0/ 89/ 4 5/122/ 7 227 7110 ML0414 040701 - 050504 97/155/ 20 83/169/ 24 548 7124 ML0819 040705 - 050504 0/ 41/ 0 0/ 14/ 0 55 7231 WUHA01 040701 - 041208 0/ 8/ 0 0/ 20/ 0 28 7237 CHALAS 040702 - 050417 0/164/ 1 0/190/ 1 356 7249 BEJLAS 040701 - 050505 0/113/ 0 0/147/ 0 260 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 - 050420 7/ 30/ 0 3/ 10/ 0 50 7501 ML0616 040701 - 050425 24/ 52/ 4 62/ 82/ 7 231 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 - 050504 242/150/ 28 137/140/ 23 720 7811 POLLAS 040706 - 050505 0/ 63/ 0 0/ 84/ 0 147 7824 SPNLAS 040701 - 050506 1/113/ 0 0/122/ 1 237 7825 STL3 040807 - 050505 192/295/ 42 199/173/ 32 933 7832 SALRO 040702 - 050503 151/253/ 21 203/313/ 31 972 7835 GRASSE 040702 - 050504 0/ 54/ 2 0/ 53/ 2 111 7836 GFZLAS 040701 - 040701 0/ 1/ 0 0/ 0/ 0 1 7837 CHILAS 040704 - 050414 0/104/ 0 0/151/ 2 257 7838 SHOLAS 040701 - 050428 78/131/ 4 83/174/ 10 480 7839 AUSLAS 040701 - 050504 227/186/ 31 100/189/ 28 761 7840 RGOLAS 040701 - 050505 176/119/ 26 92/130/ 19 562 7841 GFZLA3 040702 - 050502 63/ 77/ 17 28/107/ 12 304 7845 GRASLL 040705 - 040920 11/ 14/ 0 3/ 12/ 1 41 7941 MLROnn 040701 - 050504 97/ 77/ 11 86/103/ 12 386 8834 WLRS01 040701 - 050506 260/161/ 30 152/189/ 26 818 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050429.0 -58.1 +/- 0.1 293.5 +/- 0.1 -32654.49 +/- 0.01 050430.0 -57.1 +/- 0.1 295.3 +/- 0.1 -32654.88 +/- 0.02 050501.0 -57.1 +/- 0.1 298.1 +/- 0.1 -32655.48 +/- 0.03 050502.0 -57.7 +/- 0.1 300.7 +/- 0.2 -32656.36 +/- 0.04 050503.0 -58.9 +/- 0.1 302.7 +/- 0.1 -32657.51 +/- 0.05 050504.0 -60.5 +/- 0.1 304.3 +/- 0.1 -32658.89 +/- 0.05 050505.0 -61.0 +/- 0.1 305.9 +/- 0.2 -32660.33 +/- 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 ******************************************************************************** |