| Date: | 2005-03-12 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 5052: Delft QL Report March 12, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-03-12 13:15:00 UTC Message No. 5052 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report March 12, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS March 12, 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 Sat, Mar 12, 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 Sat, Mar 12, 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) 050310 - 050310 - 1 1884 Riga, Latvia 050309 - 050309 - 1 7080 McDonald Obs., Fort Davis, TX 050303 - 050311 3 3 7090 Yarragadee, Australia 050310 - 050310 2 2 7105 Greenbelt, Maryland 050309 - 050310 1 2 7110 Monument Peak, California 050309 - 050311 2 5 7237 Changchun, China 050310 - 050310 1 - 7249 Beijing, China 050309 - 050311 3 4 7501 Hartebeesthoek, SA (MOB-6) 050311 - 050311 1 - 7811 Borowiec, Poland 050309 - 050310 1 3 7825 Mount Stromlo, Australia 050309 - 050311 8 6 7832 Riyad, Saudi Arabia 050311 - 050312 1 1 7835 Grasse, France 050309 - 050311 2 2 7837 Shanghai Observatory, China 050309 - 050309 1 2 7838 Simosato Observatory, Japan 050226 - 050226 1 1 7839 Graz, Austria 050310 - 050311 2 1 7840 Herstmonceux, United Kingdom 050310 - 050312 1 2 7841 Potsdam, Germany 050309 - 050310 2 3 7941 Matera, Italy (MLRO 532) 050309 - 050312 4 7 ------ ------ --- --- TOTAL 050226 - 050312 36 46 ------------------------------------------------------------------------------ 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 Fri, Mar 4, 2005 to Sat, Mar 12, 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 20 20 Number of Passes 98/ 97 116/116 Number of Normal Points 939/ 932 1323/1314 Weighted RMS of Fit (mm) 12 14 ----------------------------------------------------------------------- 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 63 99 +-1644 -23 +-1036 12 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 9 Mar 05 23:17 LAG2 11 0 80 80 +- 90 0 +- 97 4 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 4 Mar 05 05:54 LAG2 6 0 11 26 +- 63 -9 +- 30 1 7080 4 Mar 05 09:11 LAG1 16 0 7 -5 +- 18 -1 +- 14 3 7080 4 Mar 05 09:51 LAG2 15 0 3 -1 +- 20 2 +- 15 2 7080 4 Mar 05 12:38 LAG1 6 0 2 -1 +- 28 0 +- 15 2 7080 7 Mar 05 22:13 LAG1 11 0 10 5 +- 20 3 +- 10 4 7080 8 Mar 05 18:53 LAG2 3 0 10 -76 +- 312 94 +- 407 2 7080 8 Mar 05 21:00 LAG1 8 0 5 -2 +- 29 2 +- 29 5 7080 9 Mar 05 16:48 LAG2 11 0 30 25 +- 24 6 +- 23 4 7080 9 Mar 05 19:35 LAG1 12 0 13 1 +- 19 9 +- 17 7 7080 9 Mar 05 23:19 LAG1 9 0 3 0 +- 69 -1 +- 44 2 7080 10 Mar 05 21:51 LAG1 9 0 19 -25 +- 36 6 +- 27 1 7080 11 Mar 05 04:31 LAG2 9 0 26 4 +- 22 -17 +- 14 4 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 5 Mar 05 09:39 LAG1 7 0 10 -4 +- 36 -2 +- 18 3 7090 5 Mar 05 10:35 LAG2 3 0 3 -1 +- 34 10 +- 149 0 7090 5 Mar 05 12:55 LAG1 6 0 9 -8 +- 19 -3 +- 44 1 7090 5 Mar 05 14:25 LAG2 23 0 3 -1 +- 8 -2 +- 5 1 7090 5 Mar 05 16:03 LAG1 16 0 6 1 +- 11 3 +- 8 2 7090 5 Mar 05 19:21 LAG1 15 0 16 -9 +- 12 7 +- 5 6 7090 6 Mar 05 08:07 LAG1 6 0 13 -13 +- 17 0 +- 18 3 7090 6 Mar 05 11:29 LAG1 16 0 13 -8 +- 10 -7 +- 9 1 7090 6 Mar 05 12:23 LAG2 20 0 5 -2 +- 9 2 +- 5 1 7090 6 Mar 05 18:43 LAG1 2 0 45 -41 +-5698 29 +-1919 0 7090 7 Mar 05 10:13 LAG1 10 0 10 4 +- 13 -7 +- 15 5 7090 7 Mar 05 10:45 LAG2 15 0 3 -1 +- 13 0 +- 10 3 7090 7 Mar 05 14:45 LAG2 9 0 9 -9 +- 14 0 +- 12 1 7090 7 Mar 05 16:39 LAG1 19 0 4 0 +- 9 2 +- 6 2 7090 7 Mar 05 20:13 LAG1 21 0 7 7 +- 9 0 +- 5 1 7090 8 Mar 05 12:23 LAG1 3 0 2 1 +- 32 -4 +- 145 1 7090 10 Mar 05 09:00 LAG2 15 0 8 -10 +- 14 4 +- 14 2 7090 10 Mar 05 09:33 LAG1 18 0 8 7 +- 9 -1 +- 6 2 7090 10 Mar 05 13:05 LAG2 17 0 7 2 +- 10 3 +- 7 2 7090 10 Mar 05 19:37 LAG1 21 0 16 -16 +- 9 2 +- 4 2 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 4 Mar 05 02:03 LAG2 12 0 5 -2 +- 13 -3 +- 15 3 7105 4 Mar 05 05:41 LAG2 15 0 7 -2 +- 10 -2 +- 4 5 7105 4 Mar 05 08:45 LAG1 8 0 5 -7 +- 32 -4 +- 13 3 7105 6 Mar 05 02:33 LAG2 5 0 4 8 +- 105 -9 +- 80 0 7105 7 Mar 05 04:15 LAG2 20 0 17 -13 +- 10 -3 +- 6 3 7105 9 Mar 05 04:35 LAG2 11 0 14 -6 +- 15 -5 +- 9 4 7105 9 Mar 05 05:41 LAG1 6 0 12 7 +- 19 11 +- 60 10 7105 9 Mar 05 08:31 LAG2 11 0 13 0 +- 12 -8 +- 8 2 7105 9 Mar 05 09:33 LAG1 8 0 18 -15 +- 71 15 +- 31 1 7105 10 Mar 05 06:25 LAG2 25 0 6 0 +- 8 3 +- 5 1 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 4 Mar 05 05:45 LAG2 15 0 3 2 +- 13 -1 +- 10 2 7110 4 Mar 05 09:39 LAG2 6 0 4 -6 +- 69 -1 +- 50 1 7110 9 Mar 05 17:01 LAG2 5 0 10 69 +- 171 -37 +- 94 6 7110 10 Mar 05 06:13 LAG2 13 0 22 -13 +- 12 11 +- 9 2 7110 10 Mar 05 10:21 LAG2 13 0 9 -8 +- 17 0 +- 15 2 7110 10 Mar 05 11:59 LAG1 4 0 18 32 +- 193 -22 +- 84 1 7110 10 Mar 05 14:39 LAG2 5 0 19 0 +- 111 13 +- 74 1 7110 10 Mar 05 21:45 LAG1 6 0 30 -24 +- 43 4 +- 34 1 7110 11 Mar 05 04:37 LAG2 8 0 14 0 +- 18 -14 +- 19 1 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 4 Mar 05 17:23 LAG2 5 0 20 40 +- 180 -47 +- 172 7 7237 4 Mar 05 20:10 LAG1 7 0 33 30 +- 113 -1 +- 88 8 7237 5 Mar 05 15:35 LAG2 3 0 49 -39 +- 533 -5 +- 333 15 7237 5 Mar 05 19:36 LAG2 2 0 80 -91 +- 841 13 +-1012 0 7237 10 Mar 05 19:13 LAG1 2 0 40 39 +- 118 -23 +- 825 0 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 4 Mar 05 17:14 LAG2 15 0 21 -24 +- 84 3 +- 45 11 7249 4 Mar 05 20:07 LAG1 12 0 42 50 +- 72 20 +- 41 28 7249 4 Mar 05 21:03 LAG2 20 0 26 7 +- 34 0 +- 24 25 7249 5 Mar 05 18:49 LAG1 7 0 17 -20 +- 135 -12 +- 103 15 7249 5 Mar 05 19:15 LAG2 14 0 17 -8 +- 44 -6 +- 39 11 7249 7 Mar 05 15:41 LAG2 8 0 24 -37 +- 207 27 +- 120 19 7249 7 Mar 05 19:33 LAG2 6 0 11 -11 +- 84 -7 +- 148 8 7249 7 Mar 05 19:43 LAG1 14 0 27 -11 +- 47 -10 +- 28 7 7249 8 Mar 05 17:36 LAG2 10 0 11 -8 +- 61 0 +- 43 7 7249 8 Mar 05 18:21 LAG1 9 0 28 19 +- 51 5 +- 76 19 7249 8 Mar 05 21:45 LAG2 3 0 8 26 +- 554 19 +- 546 5 7249 9 Mar 05 19:46 LAG2 7 1 15 14 +- 62 -11 +- 140 5 7249 10 Mar 05 17:46 LAG2 16 0 12 0 +- 42 -9 +- 32 5 7249 10 Mar 05 19:05 LAG1 14 0 20 19 +- 40 -2 +- 33 6 7249 11 Mar 05 16:15 LAG2 8 0 24 -51 +- 482 27 +- 207 20 7249 11 Mar 05 17:49 LAG1 12 0 14 -13 +- 57 13 +- 57 9 7249 11 Mar 05 19:57 LAG2 16 0 18 -9 +- 38 -10 +- 34 9 7249 11 Mar 05 21:31 LAG1 5 0 12 3 +- 159 6 +- 140 6 Station 7308 (Tokyo) (position fixed, acc. 50 mm) 7308 7 Mar 05 03:47 LAG1 4 0 67 -87 +- 117 -70 +- 239 13 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 4 Mar 05 19:57 LAG2 3 0 17 12 +- 27 -7 +- 11 9 7501 7 Mar 05 18:21 LAG2 5 0 12 16 +- 55 5 +- 57 0 7501 11 Mar 05 03:12 LAG1 3 0 3 5 +- 89 7 +- 137 2 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 9 Mar 05 01:01 LAG2 7 0 29 25 +- 69 6 +- 48 7 7811 9 Mar 05 01:41 LAG1 5 0 52 52 +- 83 -2 +- 76 4 7811 9 Mar 05 23:13 LAG2 10 0 29 28 +- 59 0 +- 50 5 7811 10 Mar 05 03:13 LAG2 6 0 31 43 +- 119 16 +- 99 7 7811 10 Mar 05 03:54 LAG1 8 0 30 29 +- 64 -3 +- 63 4 7811 10 Mar 05 21:21 LAG2 10 0 35 29 +- 60 -13 +- 73 8 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 5 Mar 05 03:43 LAG1 4 0 56 126 +- 682 31 +- 302 10 7824 7 Mar 05 04:29 LAG1 2 0 58 109 +-5900 18 +-2150 0 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 4 Mar 05 04:19 LAG2 4 0 12 13 +- 30 25 +- 82 7 7825 5 Mar 05 10:29 LAG2 10 0 4 0 +- 15 1 +- 7 2 7825 5 Mar 05 15:43 LAG1 24 0 8 -7 +- 8 -1 +- 4 3 7825 5 Mar 05 19:29 LAG1 5 1 10 21 +- 59 25 +- 88 6 7825 6 Mar 05 04:17 LAG1 10 0 3 -2 +- 13 0 +- 9 2 7825 6 Mar 05 04:51 LAG2 6 0 6 18 +- 96 -8 +- 53 4 7825 6 Mar 05 07:49 LAG1 19 0 8 6 +- 10 1 +- 6 2 7825 6 Mar 05 08:39 LAG2 17 0 13 13 +- 11 -3 +- 7 5 7825 6 Mar 05 11:27 LAG1 4 0 3 0 +- 72 -4 +- 85 2 7825 6 Mar 05 12:45 LAG2 16 0 9 4 +- 11 3 +- 10 6 7825 6 Mar 05 14:25 LAG1 15 0 3 0 +- 11 0 +- 5 3 7825 6 Mar 05 17:55 LAG1 19 0 5 -4 +- 9 0 +- 5 2 7825 7 Mar 05 02:45 LAG2 5 0 23 32 +- 62 -11 +- 63 8 7825 9 Mar 05 11:07 LAG2 17 0 8 -9 +- 11 0 +- 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 21 1 +- 47 10 +- 29 10 7825 10 Mar 05 05:59 LAG1 16 0 13 4 +- 12 5 +- 7 5 7825 10 Mar 05 09:15 LAG2 2 0 12 60 +- 498 63 +- 437 0 7825 10 Mar 05 09:45 LAG1 2 0 2 -56 +-1020 38 +- 659 0 7825 11 Mar 05 03:19 LAG2 11 1 4 0 +- 73 0 +- 38 3 7825 11 Mar 05 04:33 LAG1 13 0 12 -9 +- 11 -8 +- 11 2 7825 11 Mar 05 07:37 LAG2 9 0 4 19 +- 76 -11 +- 41 1 7825 11 Mar 05 07:59 LAG1 16 0 9 1 +- 10 -5 +- 6 3 7825 11 Mar 05 11:19 LAG2 6 0 10 2 +- 17 6 +- 10 1 7825 11 Mar 05 11:35 LAG1 8 0 2 3 +- 24 -2 +- 26 1 7825 11 Mar 05 14:47 LAG1 17 0 13 -14 +- 11 5 +- 6 2 7825 11 Mar 05 18:35 LAG1 8 0 3 5 +- 50 -5 +- 34 2 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 5 Mar 05 10:09 LAG1 17 0 11 6 +- 16 4 +- 10 6 7832 5 Mar 05 22:37 LAG2 9 0 9 3 +- 22 -3 +- 12 6 7832 5 Mar 05 22:51 LAG1 10 0 11 8 +- 21 4 +- 19 3 7832 6 Mar 05 02:13 LAG1 11 0 5 -4 +- 37 -5 +- 22 2 7832 6 Mar 05 02:57 LAG2 15 0 10 9 +- 23 0 +- 21 3 7832 6 Mar 05 07:09 LAG2 8 0 10 3 +- 57 -5 +- 49 3 7832 6 Mar 05 12:17 LAG1 15 1 25 -26 +- 18 5 +- 13 6 7832 6 Mar 05 20:35 LAG2 9 0 33 -27 +- 108 -28 +- 52 3 7832 7 Mar 05 00:53 LAG1 9 0 11 6 +- 22 -1 +- 9 7 7832 7 Mar 05 05:15 LAG2 15 0 6 -2 +- 17 -3 +- 12 4 7832 7 Mar 05 18:45 LAG2 11 0 14 -30 +- 46 -15 +- 29 3 7832 7 Mar 05 22:55 LAG2 11 0 8 -4 +- 29 4 +- 30 2 7832 7 Mar 05 23:33 LAG1 11 0 12 -8 +- 20 -8 +- 14 4 7832 8 Mar 05 03:05 LAG1 8 0 24 12 +- 42 -11 +- 37 2 7832 8 Mar 05 03:21 LAG2 8 0 20 -6 +- 27 20 +- 34 1 7832 8 Mar 05 10:01 LAG1 5 0 30 -35 +- 193 2 +- 100 1 7832 8 Mar 05 20:55 LAG2 15 0 14 0 +- 17 -6 +- 10 7 7832 8 Mar 05 22:19 LAG1 11 0 21 19 +- 21 5 +- 27 2 7832 9 Mar 05 01:21 LAG2 6 0 12 11 +- 55 -1 +- 93 2 7832 9 Mar 05 01:39 LAG1 8 0 8 -10 +- 93 -7 +- 45 4 7832 9 Mar 05 05:25 LAG2 21 0 9 0 +- 14 -5 +- 10 5 7832 11 Mar 05 23:27 LAG2 11 0 16 -17 +- 27 -1 +- 34 3 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 7 Mar 05 22:59 LAG2 10 0 29 12 +- 39 19 +- 38 1 7835 8 Mar 05 21:09 LAG2 7 0 12 14 +- 44 -5 +- 63 1 7835 9 Mar 05 22:49 LAG2 5 0 8 49 +- 880 16 +- 347 1 7835 10 Mar 05 03:01 LAG2 14 0 28 38 +- 37 13 +- 28 3 7835 10 Mar 05 03:45 LAG1 4 0 36 124 +-1480 31 +- 526 0 7835 11 Mar 05 02:53 LAG1 6 0 31 44 +- 181 -7 +- 102 1 Station 7837 (Shanghai Observatory) (position fixed, acc. 50 mm) 7837 4 Mar 05 20:17 LAG1 7 0 42 -40 +- 137 1 +- 93 5 7837 4 Mar 05 21:23 LAG2 11 0 29 -27 +- 50 -1 +- 69 10 7837 6 Mar 05 13:13 LAG2 15 0 9 -6 +- 39 -1 +- 38 6 7837 6 Mar 05 17:12 LAG2 13 0 33 -35 +- 45 -18 +- 43 5 7837 6 Mar 05 17:39 LAG1 8 0 38 -37 +- 55 4 +- 99 8 7837 6 Mar 05 21:05 LAG1 6 0 19 -5 +- 178 9 +- 121 4 7837 6 Mar 05 21:35 LAG2 8 0 18 -20 +- 68 -8 +- 113 5 7837 7 Mar 05 15:13 LAG2 20 0 12 0 +- 34 -5 +- 19 6 7837 7 Mar 05 19:41 LAG1 13 0 7 -2 +- 42 1 +- 21 6 7837 8 Mar 05 13:35 LAG2 10 0 42 40 +- 57 3 +- 66 5 7837 9 Mar 05 15:27 LAG2 20 0 13 10 +- 34 3 +- 21 6 7837 9 Mar 05 19:47 LAG2 10 0 15 12 +- 49 -14 +- 61 4 7837 9 Mar 05 20:35 LAG1 14 0 17 8 +- 44 8 +- 30 3 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 4 Mar 05 04:20 LAG1 6 0 37 36 +- 39 5 +- 68 1 7838 5 Mar 05 15:03 LAG2 25 0 35 27 +- 19 10 +- 10 3 7838 6 Mar 05 13:11 LAG2 23 0 45 39 +- 20 13 +- 12 5 7838 7 Mar 05 01:49 LAG2 12 0 56 63 +- 40 -8 +- 35 7 7838 7 Mar 05 03:35 LAG1 18 0 25 25 +- 22 -2 +- 14 4 7838 7 Mar 05 11:27 LAG2 15 0 43 42 +- 24 14 +- 30 3 7838 7 Mar 05 15:13 LAG2 28 0 38 31 +- 18 10 +- 9 6 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 6 Mar 05 21:13 LAG2 7 0 11 6 +- 82 -10 +- 48 0 7839 7 Mar 05 00:39 LAG2 9 0 1 0 +- 14 0 +- 6 0 7839 7 Mar 05 00:55 LAG1 2 0 12 8 +- 31 4 +- 19 0 7839 7 Mar 05 04:14 LAG1 12 0 8 -2 +- 22 3 +- 11 3 7839 7 Mar 05 05:01 LAG2 17 0 1 1 +- 13 -1 +- 9 0 7839 7 Mar 05 07:54 LAG1 10 0 6 -5 +- 13 2 +- 9 1 7839 7 Mar 05 11:11 LAG1 20 0 7 1 +- 9 -4 +- 5 1 7839 7 Mar 05 14:45 LAG1 7 0 12 2 +- 29 -6 +- 17 1 7839 8 Mar 05 06:35 LAG1 3 0 3 -7 +- 224 -2 +- 140 0 7839 8 Mar 05 09:54 LAG1 4 0 3 -15 +- 180 -9 +- 92 0 7839 8 Mar 05 17:29 LAG1 3 0 20 -10 +- 139 -17 +- 245 0 7839 8 Mar 05 20:51 LAG2 9 0 20 11 +- 14 -7 +- 7 1 7839 10 Mar 05 14:11 LAG1 12 0 8 -3 +- 12 5 +- 7 1 7839 11 Mar 05 05:17 LAG2 19 0 15 0 +- 9 -10 +- 6 0 7839 11 Mar 05 05:56 LAG1 19 0 5 -5 +- 9 0 +- 5 1 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 4 Mar 05 01:27 LAG1 6 0 20 -19 +- 49 0 +- 85 4 7840 4 Mar 05 02:15 LAG2 19 0 8 1 +- 15 4 +- 9 3 7840 4 Mar 05 15:45 LAG1 5 0 14 19 +- 69 -6 +- 76 2 7840 5 Mar 05 00:23 LAG2 23 0 8 7 +- 13 0 +- 8 2 7840 5 Mar 05 04:13 LAG1 1 0 20 0 +- 0 0 +- 0 0 7840 5 Mar 05 04:25 LAG2 15 0 9 9 +- 17 0 +- 10 3 7840 5 Mar 05 07:11 LAG1 16 0 9 7 +- 16 3 +- 11 3 7840 5 Mar 05 08:31 LAG2 5 0 16 18 +- 152 1 +- 89 1 7840 5 Mar 05 10:41 LAG1 10 0 16 17 +- 23 -2 +- 14 3 7840 6 Mar 05 09:27 LAG1 9 0 9 7 +- 28 2 +- 26 2 7840 7 Mar 05 00:35 LAG2 16 0 8 2 +- 16 3 +- 8 3 7840 7 Mar 05 04:29 LAG1 10 0 10 7 +- 20 -2 +- 11 4 7840 7 Mar 05 05:05 LAG2 12 0 6 16 +- 55 -8 +- 30 3 7840 7 Mar 05 08:57 LAG2 12 0 6 7 +- 24 -3 +- 23 1 7840 10 Mar 05 21:17 LAG2 8 0 8 5 +- 24 -8 +- 34 0 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 4 Mar 05 11:59 LAG1 9 0 26 -21 +- 14 11 +- 15 9 7841 9 Mar 05 23:02 LAG2 18 0 10 -9 +- 9 0 +- 6 3 7841 10 Mar 05 03:02 LAG2 23 1 30 19 +- 9 5 +- 5 20 7841 10 Mar 05 04:01 LAG1 10 0 6 3 +- 19 -4 +- 12 4 7841 10 Mar 05 07:07 LAG2 11 0 15 27 +- 24 13 +- 18 1 7841 10 Mar 05 07:29 LAG1 11 3 11 -9 +- 17 9 +- 19 6 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 5 Mar 05 22:33 LAG2 3 0 7 -78 +- 523 -40 +- 249 0 7941 6 Mar 05 02:47 LAG2 8 0 7 -8 +- 20 -1 +- 26 1 7941 7 Mar 05 22:57 LAG2 13 0 16 -5 +- 13 15 +- 11 1 7941 9 Mar 05 22:59 LAG2 19 1 6 4 +- 10 2 +- 7 3 7941 10 Mar 05 00:35 LAG1 8 0 13 -13 +- 34 0 +- 32 1 7941 10 Mar 05 07:30 LAG2 2 0 28 23 +- 33 7 +- 32 0 7941 10 Mar 05 21:05 LAG2 13 0 24 -11 +- 12 -17 +- 8 1 7941 11 Mar 05 09:33 LAG2 6 0 11 -10 +- 17 -3 +- 58 5 7941 11 Mar 05 13:15 LAG1 3 0 4 12 +- 342 -3 +- 154 1 7941 11 Mar 05 23:17 LAG2 18 0 6 0 +- 10 3 +- 6 3 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 4 Mar 05 06:21 LAG2 16 0 14 11 +- 10 3 +- 6 8 8834 4 Mar 05 08:30 LAG1 9 0 5 -1 +- 14 -2 +- 15 5 8834 4 Mar 05 10:42 LAG2 3 0 16 -14 +- 43 3 +- 141 8 8834 4 Mar 05 12:07 LAG1 2 0 15 16 +- 81 -73 +- 200 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 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 - 050309 0/ 43/ 1 0/ 25/ 2 71 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 - 050311 54/ 60/ 3 51/ 74/ 5 247 7090 ML0514 040716 - 050310 134/377/ 35 116/250/ 28 940 7105 ML0725 040701 - 050310 0/ 85/ 4 2/101/ 7 199 7110 ML0414 040701 - 050311 74/128/ 17 76/132/ 18 445 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 - 050310 0/144/ 1 0/154/ 1 300 7249 BEJLAS 040701 - 050311 0/ 99/ 0 0/119/ 0 218 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 - 050310 0/ 53/ 0 0/ 63/ 0 116 7824 SPNLAS 040701 - 050307 0/105/ 0 0/ 98/ 0 203 7825 STL3 040807 - 050311 130/194/ 35 123/140/ 23 645 7832 SALRO 040702 - 050312 144/215/ 19 184/249/ 23 834 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 - 050309 0/ 93/ 0 0/127/ 2 222 7838 SHOLAS 040701 - 050307 58/120/ 4 80/145/ 7 414 7839 AUSLAS 040701 - 050311 188/168/ 29 91/154/ 23 653 7840 RGOLAS 040701 - 050312 129/101/ 24 80/ 90/ 13 437 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 - 050312 90/ 62/ 10 76/ 68/ 6 312 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) -------------------------------------------------------------- 050305.0 15.1 +/- 0.2 216.1 +/- 0.2 -32609.29 +/- 0.02 050306.0 13.0 +/- 0.1 216.3 +/- 0.1 -32610.06 +/- 0.03 050307.0 10.6 +/- 0.1 217.3 +/- 0.1 -32610.98 +/- 0.04 050308.0 8.9 +/- 0.1 218.9 +/- 0.1 -32612.10 +/- 0.05 050309.0 7.3 +/- 0.1 219.1 +/- 0.1 -32613.46 +/- 0.05 050310.0 4.6 +/- 0.1 219.2 +/- 0.1 -32615.21 +/- 0.06 050311.0 3.2 +/- 0.1 220.6 +/- 0.1 -32616.85 +/- 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 ******************************************************************************** |