| Date: | 2005-08-08 20:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5790: Delft QL Report August 08, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-08-08 20:15:00 UTC Message No. 5790 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report August 08, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS August 8, 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 Mon, Aug 8, 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 Mon, Aug 8, 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 050718 - 050730 4 - 1864 Maidanak, Uzbekistan (site 2) 050715 - 050803 18 - 1873 Simeiz, Crimea, Ukraine 050729 - 050802 2 - 1884 Riga, Latvia 050720 - 050802 4 - 1893 Kazivili, Crimea, Ukraine 050723 - 050801 7 - 6810 Zimmerwald 846, Switzerland 050716 - 050805 27 29 7080 McDonald Obs., Fort Davis, TX 050717 - 050803 7 2 7090 Yarragadee, Australia 050716 - 050804 41 48 7105 Greenbelt, Maryland 050718 - 050804 22 3 7110 Monument Peak, California 050715 - 050804 32 14 7237 Changchun, China 050722 - 050803 3 - 7249 Beijing, China 050725 - 050729 6 - 7355 Urumqi, China (TROS) 050717 - 050801 14 - 7501 Hartebeesthoek, SA (MOB-6) 050716 - 050721 7 8 7810 Zimmerwald 423, Switzerland 050716 - 050805 27 29 7811 Borowiec, Poland 050719 - 050804 9 - 7824 San Fernando, Spain 050718 - 050805 25 3 7825 Mount Stromlo, Australia 050716 - 050804 71 54 7832 Riyad, Saudi Arabia 050716 - 050803 32 26 7838 Simosato Observatory, Japan 050716 - 050803 18 8 7839 Graz, Austria 050715 - 050803 32 27 7840 Herstmonceux, United Kingdom 050716 - 050804 36 20 7841 Potsdam, Germany 050716 - 050804 8 1 7848 Ajaccio, Corsica (FTLRS) 050717 - 050719 2 - 7941 Matera, Italy (MLRO 532) 050716 - 050805 26 12 8834 Wettzell, Germany 050716 - 050805 30 22 ------ ------ --- --- TOTAL 050715 - 050805 510 306 ------------------------------------------------------------------------------ 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 Sun, Jul 31, 2005 to Mon, Aug 8, 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 22 12 Number of Passes 135/132 69/ 68 Number of Normal Points 1506/1470 0954/ 939 Weighted RMS of Fit (mm) 14 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 1864 (Maidanak) (position fixed, acc. 200 mm) 1864 1 Aug 05 16:49 LAG1 11 0 48 30 +- 180 -18 +- 115 26 1864 2 Aug 05 18:59 LAG1 9 0 23 1 +- 201 -12 +- 132 13 1864 3 Aug 05 17:38 LAG1 11 0 23 -1 +- 183 -5 +- 113 21 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 2 Aug 05 00:03 LAG1 6 0 238 240 +- 252 -22 +- 438 20 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 31 Jul 05 21:55 LAG1 12 0 17 -3 +- 118 12 +- 77 3 1884 2 Aug 05 22:31 LAG1 18 0 8 0 +- 70 2 +- 41 7 Station 1893 (Kazivili) (position fixed, acc. 100 mm) 1893 31 Jul 05 18:31 LAG1 9 0 40 -26 +- 243 -8 +- 159 12 1893 1 Aug 05 20:35 LAG1 10 0 14 13 +- 108 -8 +- 91 7 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 31 Jul 05 02:35 LAG1 18 0 5 0 +- 43 1 +- 28 4 6810 31 Jul 05 05:57 LAG1 18 0 25 -26 +- 48 -2 +- 25 4 6810 31 Jul 05 07:23 LAG2 10 0 22 -11 +- 83 -7 +- 53 1 6810 31 Jul 05 09:33 LAG1 16 0 21 -21 +- 46 -2 +- 32 4 6810 31 Jul 05 11:05 LAG2 14 0 9 -11 +- 78 -2 +- 50 2 6810 1 Aug 05 05:15 LAG2 10 0 9 16 +- 123 7 +- 99 3 6810 1 Aug 05 08:07 LAG1 23 0 21 -19 +- 38 -3 +- 19 2 6810 1 Aug 05 09:05 LAG2 21 0 11 -11 +- 42 -1 +- 22 2 6810 3 Aug 05 14:01 LAG2 12 0 3 2 +- 211 -1 +- 99 2 6810 3 Aug 05 17:47 LAG2 14 0 15 -14 +- 71 0 +- 54 3 6810 4 Aug 05 07:39 LAG2 13 0 6 0 +- 54 -3 +- 35 3 6810 4 Aug 05 07:41 LAG1 16 0 22 -18 +- 52 -3 +- 28 2 6810 4 Aug 05 11:46 LAG2 14 0 15 -14 +- 58 0 +- 39 4 6810 4 Aug 05 15:55 LAG2 8 0 35 -28 +- 77 -7 +- 55 1 6810 4 Aug 05 23:17 LAG1 17 0 34 -22 +- 60 6 +- 30 9 6810 5 Aug 05 02:51 LAG1 19 0 6 -5 +- 42 0 +- 26 4 6810 5 Aug 05 05:35 LAG2 17 0 19 0 +- 46 10 +- 31 11 6810 5 Aug 05 06:09 LAG1 24 0 32 -29 +- 37 -5 +- 17 4 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 2 Aug 05 04:24 LAG1 11 0 17 27 +- 39 -7 +- 24 3 7080 3 Aug 05 06:30 LAG1 3 0 13 6 +- 41 -16 +- 48 3 7080 3 Aug 05 13:09 LAG2 3 0 17 22 +- 206 -6 +- 212 5 7080 3 Aug 05 13:21 LAG1 1 0 10 0 +- 0 0 +- 0 0 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 31 Jul 05 11:25 LAG1 20 0 13 -10 +- 9 5 +- 4 5 7090 31 Jul 05 12:25 LAG2 26 0 9 5 +- 8 -4 +- 4 2 7090 31 Jul 05 15:17 LAG1 8 0 7 -10 +- 22 10 +- 30 2 7090 31 Jul 05 16:43 LAG2 27 0 2 -1 +- 8 0 +- 6 2 7090 31 Jul 05 21:03 LAG2 14 0 23 3 +- 12 11 +- 6 3 7090 1 Aug 05 00:11 LAG1 12 0 8 -7 +- 12 3 +- 13 3 7090 1 Aug 05 10:13 LAG1 17 0 11 0 +- 10 8 +- 7 1 7090 1 Aug 05 10:45 LAG2 19 0 13 2 +- 10 7 +- 6 2 7090 1 Aug 05 13:33 LAG1 16 0 20 -1 +- 11 10 +- 5 3 7090 1 Aug 05 14:43 LAG2 26 0 8 8 +- 8 0 +- 6 1 7090 2 Aug 05 12:29 LAG1 11 0 5 0 +- 17 3 +- 9 1 7090 2 Aug 05 12:57 LAG2 13 0 9 3 +- 13 -6 +- 8 2 7090 2 Aug 05 17:01 LAG2 6 0 1 1 +- 25 0 +- 18 1 7090 2 Aug 05 21:49 LAG2 10 0 6 37 +- 84 -16 +- 39 2 7090 3 Aug 05 01:03 LAG1 6 0 25 -25 +- 17 -8 +- 34 3 7090 3 Aug 05 10:57 LAG2 15 0 5 0 +- 10 -3 +- 7 1 7090 3 Aug 05 11:17 LAG1 9 0 12 -27 +- 43 8 +- 22 1 7090 3 Aug 05 14:31 LAG1 12 0 14 1 +- 12 9 +- 8 1 7090 3 Aug 05 15:07 LAG2 10 0 5 4 +- 13 0 +- 18 1 7090 3 Aug 05 19:15 LAG2 27 0 6 2 +- 8 2 +- 4 2 7090 4 Aug 05 03:07 LAG1 5 0 10 -10 +- 55 0 +- 47 4 7090 4 Aug 05 09:16 LAG2 11 0 3 -4 +- 19 5 +- 20 1 7090 4 Aug 05 09:40 LAG1 17 0 7 -2 +- 10 5 +- 7 3 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 2 Aug 05 00:39 LAG1 6 0 23 21 +- 32 2 +- 48 3 7105 2 Aug 05 04:03 LAG1 14 0 8 7 +- 12 -2 +- 6 4 7105 2 Aug 05 07:30 LAG1 6 0 2 0 +- 19 1 +- 36 2 7105 3 Aug 05 02:37 LAG1 18 0 13 10 +- 10 -6 +- 5 3 7105 3 Aug 05 06:07 LAG1 15 0 18 -6 +- 10 -12 +- 8 2 7105 3 Aug 05 09:29 LAG1 9 0 19 -20 +- 16 -2 +- 18 1 7105 3 Aug 05 21:38 LAG2 8 0 18 2 +- 60 8 +- 33 7 7105 4 Aug 05 01:11 LAG1 20 0 7 0 +- 9 4 +- 6 3 7105 4 Aug 05 04:43 LAG1 18 0 4 2 +- 9 0 +- 6 4 7105 4 Aug 05 08:12 LAG1 11 0 7 2 +- 12 -4 +- 13 5 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 1 Aug 05 12:37 LAG1 2 0 3 -57 +- 594 63 +- 681 0 7110 1 Aug 05 12:51 LAG2 7 0 10 9 +- 35 0 +- 42 0 7110 1 Aug 05 15:47 LAG1 11 0 19 -19 +- 12 2 +- 9 5 7110 2 Aug 05 14:29 LAG1 3 0 4 -4 +- 94 0 +- 102 3 7110 2 Aug 05 14:54 LAG2 4 0 19 -11 +- 46 -9 +- 50 3 7110 3 Aug 05 06:21 LAG1 7 0 32 7 +- 34 -15 +- 21 2 7110 3 Aug 05 09:55 LAG1 4 0 12 10 +- 22 1 +- 30 5 7110 4 Aug 05 05:23 LAG1 4 0 8 -5 +- 157 -1 +- 80 0 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 3 Aug 05 13:59 LAG1 2 0 16 -26 +- 406 -61 +- 621 0 Station 7355 (Urumqi) (position solved, acc. 10 mm) 7355 31 Jul 05 14:49 LAG1 6 1 14 -14 +- 72 7 +- 55 13 7355 31 Jul 05 18:03 LAG1 15 1 36 26 +- 11 13 +- 8 14 7355 31 Jul 05 21:35 LAG1 6 2 20 17 +- 22 20 +- 53 12 7355 1 Aug 05 16:43 LAG1 16 0 42 -30 +- 10 16 +- 6 23 7355 1 Aug 05 20:13 LAG1 14 1 19 4 +- 13 -13 +- 10 12 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 31 Jul 05 02:43 LAG1 17 0 15 14 +- 47 0 +- 31 4 7810 31 Jul 05 05:57 LAG1 19 0 16 -16 +- 45 0 +- 24 3 7810 31 Jul 05 07:23 LAG2 11 0 18 -9 +- 82 -5 +- 49 3 7810 31 Jul 05 09:39 LAG1 15 0 14 -13 +- 47 -2 +- 35 5 7810 31 Jul 05 11:10 LAG2 12 0 4 -4 +- 81 -4 +- 61 2 7810 1 Aug 05 05:18 LAG2 9 0 20 19 +- 135 0 +- 120 2 7810 1 Aug 05 08:09 LAG1 23 0 13 -11 +- 39 -2 +- 19 2 7810 1 Aug 05 09:06 LAG2 19 0 4 -3 +- 46 0 +- 25 2 7810 3 Aug 05 14:01 LAG2 9 0 12 19 +- 244 -3 +- 127 4 7810 3 Aug 05 17:47 LAG2 7 0 9 -8 +- 73 0 +- 113 3 7810 4 Aug 05 07:39 LAG2 13 0 7 7 +- 55 -3 +- 35 2 7810 4 Aug 05 07:41 LAG1 16 0 13 -7 +- 52 -3 +- 28 3 7810 4 Aug 05 11:46 LAG2 15 0 5 0 +- 57 -1 +- 39 4 7810 4 Aug 05 15:55 LAG2 8 0 30 -23 +- 76 -7 +- 54 3 7810 4 Aug 05 23:25 LAG1 14 0 18 -11 +- 52 5 +- 31 6 7810 5 Aug 05 02:51 LAG1 20 0 5 -1 +- 41 0 +- 25 4 7810 5 Aug 05 05:48 LAG2 12 0 13 9 +- 52 8 +- 50 5 7810 5 Aug 05 06:13 LAG1 23 0 16 -11 +- 38 -4 +- 18 3 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 1 Aug 05 20:29 LAG1 14 0 11 9 +- 49 0 +- 37 6 7811 1 Aug 05 23:57 LAG1 16 0 19 17 +- 45 2 +- 30 7 7811 2 Aug 05 22:37 LAG1 15 0 23 21 +- 47 0 +- 32 9 7811 4 Aug 05 20:00 LAG1 10 0 26 27 +- 71 -5 +- 65 8 7811 4 Aug 05 23:26 LAG1 12 0 22 20 +- 53 4 +- 42 2 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 31 Jul 05 02:55 LAG1 3 0 61 102 +- 268 73 +- 457 0 7824 31 Jul 05 21:55 LAG1 18 0 46 26 +- 29 -12 +- 13 27 7824 1 Aug 05 20:35 LAG1 16 0 51 50 +- 30 1 +- 17 8 7824 2 Aug 05 07:09 LAG1 2 0 57 57 +- 369 0 +- 832 0 7824 2 Aug 05 22:53 LAG1 11 0 74 75 +- 37 -1 +- 23 6 7824 3 Aug 05 21:51 LAG1 6 0 55 90 +- 296 -16 +- 137 3 7824 4 Aug 05 20:03 LAG1 15 0 67 66 +- 31 3 +- 22 8 7824 4 Aug 05 23:37 LAG1 18 0 62 61 +- 29 1 +- 17 8 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 31 Jul 05 01:08 LAG1 20 0 14 -5 +- 9 -6 +- 5 5 7825 31 Jul 05 04:52 LAG1 7 0 8 0 +- 35 -7 +- 34 4 7825 31 Jul 05 07:51 LAG1 17 0 15 -14 +- 10 -7 +- 7 2 7825 31 Jul 05 08:42 LAG2 24 0 4 1 +- 8 -2 +- 5 2 7825 31 Jul 05 11:21 LAG1 18 0 9 -3 +- 9 4 +- 5 2 7825 31 Jul 05 12:47 LAG2 16 0 16 6 +- 12 -9 +- 10 1 7825 1 Aug 05 03:21 LAG1 11 0 7 1 +- 14 -5 +- 14 4 7825 1 Aug 05 06:39 LAG1 6 0 10 4 +- 17 -4 +- 11 5 7825 1 Aug 05 07:11 LAG2 11 0 13 11 +- 18 2 +- 22 2 7825 1 Aug 05 10:09 LAG1 12 0 11 -8 +- 12 7 +- 10 2 7825 1 Aug 05 10:49 LAG2 24 0 4 3 +- 8 0 +- 5 2 7825 1 Aug 05 15:15 LAG2 22 0 5 3 +- 9 -2 +- 7 3 7825 1 Aug 05 19:11 LAG2 27 0 15 11 +- 8 5 +- 4 4 7825 2 Aug 05 02:01 LAG1 17 0 16 -1 +- 10 -9 +- 6 7 7825 2 Aug 05 05:43 LAG1 4 0 7 7 +- 125 -10 +- 97 5 7825 2 Aug 05 08:37 LAG1 12 0 13 -17 +- 16 -4 +- 9 1 7825 2 Aug 05 09:09 LAG2 19 0 4 3 +- 11 -3 +- 8 1 7825 2 Aug 05 12:13 LAG1 13 0 13 -11 +- 12 2 +- 10 3 7825 2 Aug 05 13:03 LAG2 24 0 9 1 +- 8 -6 +- 6 2 7825 3 Aug 05 00:57 LAG1 8 0 28 -14 +- 30 -9 +- 21 9 7825 4 Aug 05 02:47 LAG1 9 1 14 8 +- 14 -7 +- 9 5 7825 4 Aug 05 09:07 LAG2 10 0 7 -9 +- 55 -8 +- 29 3 7825 4 Aug 05 09:33 LAG1 15 0 10 -8 +- 12 4 +- 6 3 7825 4 Aug 05 13:13 LAG1 7 0 6 0 +- 16 6 +- 42 5 7825 4 Aug 05 13:27 LAG2 20 0 6 3 +- 9 -4 +- 8 2 7825 4 Aug 05 17:29 LAG2 19 0 5 4 +- 9 1 +- 5 3 7825 4 Aug 05 21:51 LAG1 15 0 5 1 +- 11 0 +- 6 5 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 31 Jul 05 03:29 LAG2 5 2 12 8 +- 116 6 +- 206 3 7832 31 Jul 05 06:03 LAG1 10 0 9 -9 +- 60 8 +- 30 4 7832 31 Jul 05 15:45 LAG2 11 0 9 -4 +- 22 -11 +- 26 2 7832 31 Jul 05 18:23 LAG1 6 0 15 13 +- 103 15 +- 58 5 7832 31 Jul 05 21:53 LAG1 11 0 20 19 +- 19 -2 +- 25 4 7832 1 Aug 05 01:27 LAG2 12 0 22 18 +- 20 9 +- 30 6 7832 1 Aug 05 05:27 LAG2 15 0 4 3 +- 20 -3 +- 16 1 7832 1 Aug 05 13:57 LAG2 15 0 10 -8 +- 20 -2 +- 15 3 7832 1 Aug 05 16:55 LAG1 7 0 12 -33 +- 141 -10 +- 71 0 7832 1 Aug 05 20:35 LAG1 7 0 6 -6 +- 37 -8 +- 42 4 7832 3 Aug 05 01:39 LAG2 7 0 11 9 +- 24 5 +- 36 4 7832 3 Aug 05 02:03 LAG1 5 0 7 10 +- 81 -5 +- 95 4 7832 3 Aug 05 05:07 LAG1 8 0 12 -24 +- 83 -16 +- 42 6 7832 3 Aug 05 05:35 LAG2 17 0 24 -5 +- 16 -18 +- 13 3 7832 3 Aug 05 14:05 LAG2 11 0 4 0 +- 23 1 +- 22 3 7832 3 Aug 05 17:41 LAG1 7 0 8 -24 +- 193 -12 +- 79 4 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 31 Jul 05 14:20 LAG1 9 0 41 36 +- 77 -2 +- 45 3 7838 1 Aug 05 10:20 LAG2 9 0 39 44 +- 40 -13 +- 56 5 7838 1 Aug 05 13:08 LAG1 4 0 34 53 +- 88 25 +- 85 2 7838 3 Aug 05 02:21 LAG2 13 0 48 37 +- 30 16 +- 32 7 7838 3 Aug 05 10:19 LAG1 13 0 16 5 +- 26 -14 +- 30 7 7838 3 Aug 05 13:49 LAG1 17 0 17 16 +- 23 -4 +- 14 6 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 1 Aug 05 17:31 LAG2 11 0 5 -5 +- 13 2 +- 12 0 7839 1 Aug 05 20:29 LAG1 20 0 7 -7 +- 9 0 +- 5 1 7839 1 Aug 05 23:57 LAG1 15 0 7 1 +- 11 2 +- 5 3 7839 2 Aug 05 03:17 LAG1 11 0 7 2 +- 16 5 +- 10 1 7839 2 Aug 05 06:49 LAG1 17 0 9 -7 +- 10 -2 +- 5 1 7839 2 Aug 05 07:27 LAG2 16 0 16 2 +- 10 -11 +- 7 1 7839 2 Aug 05 11:22 LAG2 21 0 9 -1 +- 9 0 +- 5 9 7839 2 Aug 05 22:39 LAG1 15 0 4 2 +- 11 -1 +- 6 1 7839 3 Aug 05 02:01 LAG1 12 0 7 4 +- 12 -3 +- 8 1 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 31 Jul 05 22:17 LAG1 2 0 4 -13 +- 761 9 +- 431 0 7840 2 Aug 05 03:51 LAG1 5 0 6 10 +- 159 -2 +- 88 0 7840 2 Aug 05 07:01 LAG1 6 0 5 -1 +- 59 -5 +- 49 2 7840 2 Aug 05 10:47 LAG1 3 0 8 0 +- 59 39 +- 275 0 7840 2 Aug 05 11:33 LAG2 10 0 10 7 +- 22 -3 +- 15 7 7840 2 Aug 05 15:25 LAG2 15 0 3 0 +- 17 -1 +- 10 2 7840 2 Aug 05 19:15 LAG1 5 0 9 10 +- 35 -1 +- 102 0 7840 2 Aug 05 22:37 LAG1 11 0 13 -5 +- 20 -3 +- 8 4 7840 3 Aug 05 02:18 LAG1 3 0 11 7 +- 83 -6 +- 123 0 7840 3 Aug 05 05:39 LAG1 5 0 9 -13 +- 103 -15 +- 75 1 7840 3 Aug 05 09:25 LAG1 2 0 7 15 +- 122 -49 +- 587 0 7840 3 Aug 05 09:27 LAG2 17 0 13 12 +- 16 -3 +- 9 4 7840 3 Aug 05 13:33 LAG2 18 0 9 0 +- 15 5 +- 9 3 7840 3 Aug 05 21:13 LAG1 18 0 6 -1 +- 16 -3 +- 10 2 7840 4 Aug 05 00:45 LAG1 17 0 10 6 +- 16 3 +- 8 4 7840 4 Aug 05 04:15 LAG1 15 0 8 6 +- 17 1 +- 10 3 7840 4 Aug 05 07:35 LAG2 12 0 21 19 +- 19 1 +- 11 3 7840 4 Aug 05 07:41 LAG1 12 0 7 -2 +- 19 -3 +- 9 2 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 1 Aug 05 20:23 LAG1 20 0 5 -4 +- 9 0 +- 5 3 7841 2 Aug 05 00:03 LAG1 14 0 4 3 +- 11 1 +- 8 1 7841 4 Aug 05 19:47 LAG1 18 0 7 6 +- 9 0 +- 5 3 7841 4 Aug 05 23:23 LAG1 12 0 7 -6 +- 16 -1 +- 11 4 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 5 Aug 05 06:35 LAG1 2 0 0 0 +- 694 0 +- 539 0 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 31 Jul 05 21:57 LAG1 5 0 209 -9 +- 39 198 +- 38 2*CHK* 8834 1 Aug 05 01:21 LAG1 5 0 250 0 +- 24 211 +- 20 3*CHK* 8834 1 Aug 05 05:14 LAG1 3 0 598 14 +- 317 221 +- 120 4 8834 1 Aug 05 08:17 LAG1 2 0 505 0 +- 816 265 +- 429 0 8834 1 Aug 05 09:17 LAG2 13 0 402 1 +- 14 278 +- 9 4*CHK* 8834 1 Aug 05 13:19 LAG2 11 0 10 -2 +- 28 2 +- 17 8 8834 1 Aug 05 17:37 LAG2 5 1 11 -5 +- 37 -1 +- 24 9 8834 1 Aug 05 20:39 LAG1 11 0 17 -5 +- 20 -6 +- 11 7 8834 2 Aug 05 00:08 LAG1 2 0 8 -18 +- 117 -13 +- 154 0 8834 3 Aug 05 21:25 LAG1 5 0 24 -26 +- 20 -6 +- 28 1 8834 4 Aug 05 00:52 LAG1 4 0 9 -8 +- 41 0 +- 46 4 8834 4 Aug 05 19:53 LAG1 14 0 15 -15 +- 12 1 +- 6 5 8834 4 Aug 05 23:37 LAG1 4 0 9 3 +- 21 -7 +- 16 2 8834 5 Aug 05 06:38 LAG1 1 0 14 0 +- 0 0 +- 0 0 -------------------------------------------------------------------------------- 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 - 050730 0/ 30/ 0 0/ 20/ 0 50 1864 MD2LAS 050110 - 050803 0/ 70/ 0 0/ 46/ 0 116 1873 SIMLAS 050316 - 050802 0/ 25/ 0 0/ 14/ 0 39 1884 RIGLAS 050104 - 050802 0/ 39/ 0 3/ 42/ 3 87 1893 CRMLAS 050723 - 050801 0/ 7/ 0 0/ 0/ 0 7 6405 TIGO 050104 - 050706 7/ 18/ 2 8/ 21/ 2 58 6810 ZIMLAT 050101 - 050805 201/120/ 21 166/ 70/ 18 596 7080 MLRS25 050101 - 050803 37/ 64/ 4 26/ 67/ 8 206 7090 ML0514 050101 - 050804 114/359/ 30 106/266/ 23 898 7105 ML0725 050108 - 050804 1/ 46/ 4 14/ 54/ 5 124 7110 ML0414 050118 - 050804 83/114/ 18 44/103/ 11 373 7124 ML0819 050118 - 050622 0/ 29/ 0 0/ 9/ 0 38 7237 CHALAS 050102 - 050803 0/ 60/ 1 0/ 71/ 0 132 7249 BEJLAS 050101 - 050729 0/ 61/ 0 0/ 69/ 0 130 7308 CRLLAS 050111 - 050510 7/ 5/ 1 1/ 10/ 0 24 7355 TROS02 050603 - 050801 0/ 38/ 0 0/ 7/ 0 45 7405 TIGO 050105 - 050705 5/ 26/ 0 3/ 7/ 0 41 7501 ML0616 050117 - 050721 40/110/ 3 40/ 87/ 7 287 7806 METLAS 050301 - 050301 0/ 0/ 0 0/ 1/ 0 1 7810 ZIMLAT 050101 - 050805 179/119/ 19 159/ 64/ 17 557 7811 POLLAS 050111 - 050804 0/ 50/ 0 0/ 39/ 0 89 7824 SPNLAS 050108 - 050805 5/103/ 1 2/ 92/ 3 206 7825 STL3 050101 - 050804 229/316/ 30 179/221/ 23 998 7832 SALRO 050101 - 050803 75/177/ 12 111/176/ 19 570 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 - 050803 47/ 68/ 1 30/ 77/ 5 228 7839 AUSLAS 050103 - 050803 154/108/ 15 102/ 90/ 13 482 7840 RGOLAS 050102 - 050804 177/105/ 21 123/ 90/ 20 536 7841 GFZLA3 050105 - 050804 45/ 42/ 10 17/ 61/ 8 183 7848 FTLR06 050515 - 050719 4/ 30/ 0 3/ 10/ 0 47 7941 MLROnn 050102 - 050805 51/ 89/ 6 74/ 92/ 18 330 8834 WLRS01 050109 - 050805 161/118/ 19 139/103/ 19 559 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 050801.0 -2.9 +/- 0.1 421.1 +/- 0.1 -32655.77 +/- 0.02 050802.0 -1.1 +/- 0.1 421.5 +/- 0.1 -32654.76 +/- 0.02 050803.0 0.7 +/- 0.1 421.7 +/- 0.1 -32653.70 +/- 0.03 050804.0 3.5 +/- 0.1 422.2 +/- 0.1 -32652.73 +/- 0.04 050805.0 4.9 +/- 0.2 422.3 +/- 0.4 -32652.04 +/- 0.05 050806.0 4.6 +/-10.0 424.3 +/-10.0 -32652.01 +/-10.00 050807.0 6.1 +/-10.0 424.7 +/-10.0 -32651.63 +/-10.00 -------------------------------------------------------------- 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 ******************************************************************************** |