| Date: | 2004-09-28 07:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 4364: Delft QL Report September 28, 2004 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2004-09-28 07:15:00 UTC Message No. 4364 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report September 28, 2004 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS September 28, 2004 This is a weekly 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, Sep 27, 2004. 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, Sep 27, 2004. 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) 040917 - 040925 8 3 1884 Riga, Latvia 040917 - 040926 2 1 1893 Kazivili, Crimea, Ukraine 040920 - 040921 2 3 6405 Concepcion, Chile (TIGO 847) 040924 - 040924 - 1 6810 Zimmerwald 846, Switzerland 040920 - 040922 7 4 7080 McDonald Obs., Fort Davis, TX 040922 - 040922 1 - 7090 Yarragadee, Australia 040921 - 040927 10 5 7105 Greenbelt, Maryland 040921 - 040924 4 7 7110 Monument Peak, California 040920 - 040922 6 3 7124 Papeete, Tahiti 040921 - 040921 1 - 7231 Wuhan, China (new) 040921 - 040923 1 2 7237 Changchun, China 040920 - 040926 5 10 7249 Beijing, China 040918 - 040927 7 11 7501 Hartebeesthoek, SA (MOB-6) 040921 - 040927 - 8 7810 Zimmerwald 423, Switzerland 040920 - 040922 8 4 7811 Borowiec, Poland 040921 - 040921 - 1 7824 San Fernando, Spain 040920 - 040927 4 6 7825 Mount Stromlo, Australia 040923 - 040925 5 4 7832 Riyad, Saudi Arabia 040920 - 040927 17 19 7837 Shanghai Observatory, China 040921 - 040926 4 9 7838 Simosato Observatory, Japan 040925 - 040925 - 2 7839 Graz, Austria 040917 - 040927 22 17 7845 Grasse, France (LLR) 040920 - 040920 1 1 8834 Wettzell, Germany 040920 - 040925 8 3 ------ ------ --- --- TOTAL 040917 - 040927 123 124 ------------------------------------------------------------------------------ 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 Sat, Sep 18, 2004 to Sun, Sep 26, 2004. 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 23 24 Number of Passes 147/143 146/140 Number of Normal Points 1265/1227 1594/1559 Weighted RMS of Fit (mm) 13 13 ----------------------------------------------------------------------- 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 1824 (Kiev) (position solved, acc. 200 mm) 1824 18 Sep 04 17:17 LAG1 4 0 2769 3855 +-1371 526 +- 640 104*CHK* 1824 18 Sep 04 17:47 LAG2 3 0 153 1747 +-6442 948 +-3276 9 1824 18 Sep 04 20:59 LAG1 6 0 169 537 +- 917 306 +- 654 16 1824 18 Sep 04 21:52 LAG2 4 0 348 1929 +-2692 910 +-1491 23 1824 19 Sep 04 19:33 LAG1 9 0 155 271 +- 446 99 +- 288 38 1824 20 Sep 04 00:13 LAG2 11 0 287 -305 +- 197 205 +- 235 36*CHK* Station 1831 (Lviv) (position fixed, acc. 400 mm) 1831 18 Sep 04 21:06 LAG1 13 0 101 1 +- 384 -85 +- 323 15 1831 18 Sep 04 21:51 LAG2 15 0 92 26 +- 343 85 +- 298 22 Station 1864 (Maidanak) (position fixed, acc. 200 mm) 1864 18 Sep 04 17:03 LAG1 9 0 26 7 +- 220 10 +- 119 20 1864 19 Sep 04 15:51 LAG1 9 0 25 22 +- 200 0 +- 131 11 1864 21 Sep 04 16:31 LAG1 8 0 25 -12 +- 214 6 +- 97 15 1864 21 Sep 04 20:29 LAG2 5 0 21 12 +-2959 14 +-1579 14 1864 22 Sep 04 14:46 LAG2 7 0 18 48 +- 932 -20 +- 498 10 1864 22 Sep 04 15:27 LAG1 7 0 10 9 +- 308 -2 +- 218 7 1864 23 Sep 04 17:39 LAG1 5 0 15 14 +- 530 -5 +- 688 10 1864 24 Sep 04 14:41 LAG2 8 0 22 -3 +- 238 6 +- 131 20 1864 24 Sep 04 16:01 LAG1 11 0 25 18 +- 194 4 +- 126 19 1864 25 Sep 04 14:37 LAG1 8 0 33 16 +- 214 0 +- 104 28 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 18 Sep 04 17:36 LAG1 11 0 6 5 +- 100 -1 +- 75 3 1884 18 Sep 04 21:15 LAG1 5 0 35 -35 +- 134 0 +- 337 5 1884 25 Sep 04 18:45 LAG1 9 0 15 10 +- 175 3 +- 125 4 Station 1893 (Kazivili) (position fixed, acc. 100 mm) 1893 18 Sep 04 17:23 LAG1 7 0 11 24 +- 281 14 +- 200 6 1893 18 Sep 04 17:57 LAG2 10 0 35 31 +- 145 -23 +- 110 27 1893 18 Sep 04 20:59 LAG1 4 0 36 112 +- 531 111 +- 503 14 1893 19 Sep 04 19:31 LAG1 7 0 20 30 +- 322 29 +- 209 3 1893 19 Sep 04 20:31 LAG2 7 0 25 101 +- 954 -60 +- 491 14 1893 20 Sep 04 18:05 LAG1 9 0 32 16 +- 290 25 +- 156 8 1893 20 Sep 04 18:38 LAG2 7 0 36 156 +-1810 -78 +- 787 25 1893 20 Sep 04 22:25 LAG2 12 0 21 20 +- 138 -21 +- 100 9 1893 21 Sep 04 16:53 LAG1 7 0 25 3 +- 176 26 +- 185 12 1893 21 Sep 04 20:25 LAG2 4 0 36 62 +- 394 59 +- 698 12 Station 6405 (Concepcion) (position solved, acc. 20 mm) 6405 24 Sep 04 13:17 LAG2 5 0 3 0 +- 143 0 +- 108 3 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 18 Sep 04 00:00 LAG2 14 0 12 6 +- 117 -6 +- 70 10 6810 18 Sep 04 03:45 LAG2 17 0 4 3 +- 45 -1 +- 43 2 6810 18 Sep 04 10:30 LAG1 7 0 19 -2 +- 201 8 +- 113 6 6810 18 Sep 04 14:03 LAG1 14 0 23 -21 +- 52 1 +- 30 3 6810 18 Sep 04 17:30 LAG1 11 0 13 11 +- 55 -1 +- 36 6 6810 18 Sep 04 17:36 LAG2 16 0 8 -8 +- 51 1 +- 29 2 6810 18 Sep 04 20:55 LAG1 12 0 6 1 +- 52 -2 +- 32 4 6810 18 Sep 04 21:35 LAG2 18 0 11 -11 +- 44 -2 +- 26 2 6810 19 Sep 04 01:41 LAG2 27 0 7 -2 +- 35 -3 +- 21 5 6810 20 Sep 04 11:33 LAG1 6 0 34 -26 +- 81 12 +- 80 4 6810 20 Sep 04 14:55 LAG1 14 0 29 -29 +- 50 6 +- 32 4 6810 20 Sep 04 17:51 LAG2 20 0 36 -36 +- 41 2 +- 26 3 6810 20 Sep 04 18:11 LAG1 15 0 19 -17 +- 48 6 +- 24 5 6810 21 Sep 04 09:57 LAG1 7 0 11 -12 +- 145 0 +- 77 5 6810 21 Sep 04 20:01 LAG2 8 0 32 -18 +- 143 11 +- 109 4 6810 21 Sep 04 20:47 LAG1 8 0 18 -20 +- 226 1 +- 107 5 6810 22 Sep 04 04:08 LAG2 12 0 5 0 +- 58 3 +- 74 3 6810 22 Sep 04 08:36 LAG1 6 0 9 -30 +- 238 -21 +- 182 1 6810 22 Sep 04 12:07 LAG1 17 0 17 -15 +- 45 -5 +- 22 2 6810 22 Sep 04 14:29 LAG2 4 0 55 -58 +- 231 8 +- 557 5 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 18 Sep 04 05:49 LAG1 5 0 2 5 +- 87 4 +- 76 0 7080 18 Sep 04 07:18 LAG2 1 0 29 0 +- 0 0 +- 0 0 7080 22 Sep 04 20:21 LAG1 3 0 29 13 +-1014 -18 +- 446 0 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 18 Sep 04 09:59 LAG2 6 0 5 30 +- 140 -18 +- 82 4 7090 18 Sep 04 12:57 LAG1 7 0 8 -8 +- 16 -5 +- 40 1 7090 18 Sep 04 16:21 LAG1 14 0 10 -10 +- 11 0 +- 6 2 7090 19 Sep 04 15:21 LAG1 7 0 20 -28 +- 49 4 +- 22 1 7090 21 Sep 04 12:21 LAG1 8 0 67 -68 +- 15 -16 +- 37 4*CHK* 7090 21 Sep 04 15:37 LAG1 15 0 10 0 +- 11 -4 +- 5 6 7090 21 Sep 04 21:33 LAG2 15 0 7 -6 +- 10 -1 +- 9 1 7090 21 Sep 04 22:39 LAG1 8 0 18 -18 +- 20 1 +- 25 5 7090 22 Sep 04 02:11 LAG1 4 0 21 -25 +- 79 3 +- 62 0 7090 23 Sep 04 21:41 LAG2 1 0 5 0 +- 0 0 +- 0 0 7090 23 Sep 04 23:21 LAG1 7 0 9 -9 +- 15 -2 +- 29 2 7090 24 Sep 04 02:29 LAG2 3 0 39 115 +- 230 -100 +- 152 1 7090 25 Sep 04 14:03 LAG1 2 0 20 -18 +- 98 2 +- 229 0 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 19 Sep 04 23:33 LAG2 8 0 11 11 +- 31 0 +- 27 1 7105 19 Sep 04 23:49 LAG1 11 0 12 0 +- 35 -6 +- 19 3 7105 20 Sep 04 03:01 LAG1 8 0 7 2 +- 14 4 +- 9 2 7105 20 Sep 04 03:43 LAG2 15 0 7 2 +- 23 -6 +- 15 2 7105 20 Sep 04 06:51 LAG1 2 0 15 135 +- 276 2279 +-4788 0 7105 20 Sep 04 07:27 LAG2 25 0 13 -11 +- 8 -2 +- 4 2 7105 21 Sep 04 01:17 LAG2 6 0 10 15 +- 191 12 +- 91 0 7105 21 Sep 04 01:39 LAG1 15 0 15 15 +- 10 0 +- 7 2 7105 21 Sep 04 05:11 LAG1 16 0 6 -5 +- 10 2 +- 10 3 7105 21 Sep 04 05:47 LAG2 20 0 5 -4 +- 12 0 +- 7 2 7105 21 Sep 04 23:41 LAG2 5 0 10 11 +- 21 12 +- 52 2 7105 22 Sep 04 00:13 LAG1 17 0 6 -3 +- 10 0 +- 6 5 7105 22 Sep 04 03:37 LAG2 19 0 5 0 +- 9 -2 +- 7 3 7105 22 Sep 04 07:39 LAG2 20 0 5 -3 +- 10 -3 +- 6 2 7105 24 Sep 04 03:49 LAG2 15 0 8 -3 +- 10 -1 +- 6 6 7105 24 Sep 04 04:57 LAG1 10 0 7 -12 +- 47 3 +- 29 2 7105 24 Sep 04 07:57 LAG2 18 0 12 -10 +- 10 -4 +- 7 3 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 18 Sep 04 02:41 LAG1 3 0 3 3 +- 53 0 +- 40 1 7110 18 Sep 04 03:02 LAG2 13 0 12 12 +- 21 0 +- 16 3 7110 18 Sep 04 05:43 LAG1 13 0 12 3 +- 11 5 +- 5 4 7110 18 Sep 04 07:00 LAG2 8 0 11 -14 +- 18 -8 +- 16 1 7110 18 Sep 04 11:17 LAG2 15 0 15 -4 +- 11 11 +- 9 6 7110 19 Sep 04 13:27 LAG2 4 0 4 -6 +- 56 -16 +- 117 3 7110 20 Sep 04 19:11 LAG1 6 0 1 2 +- 37 1 +- 30 1 7110 21 Sep 04 01:13 LAG2 2 0 3 -74 +- 671 -57 +- 518 0 7110 21 Sep 04 01:57 LAG1 11 0 17 18 +- 14 -3 +- 13 2 7110 21 Sep 04 05:07 LAG1 13 0 12 -4 +- 11 5 +- 6 1 7110 21 Sep 04 09:31 LAG2 12 0 22 -22 +- 15 0 +- 14 1 7110 21 Sep 04 17:55 LAG1 4 0 4 1 +- 30 -7 +- 72 1 7110 21 Sep 04 21:19 LAG1 3 0 14 -30 +- 196 -33 +- 150 3 7110 21 Sep 04 23:19 LAG2 4 0 8 23 +- 113 21 +- 108 7 7110 22 Sep 04 00:46 LAG1 5 5 0 0 +- 0 0 +- 0 0 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 18 Sep 04 09:06 LAG1 2 0 2 12 +- 339 6 +- 221 0 7124 21 Sep 04 08:21 LAG1 6 0 24 28 +- 143 1 +- 60 2 Station 7231 (Wuhan) (position fixed, acc. 50 mm) 7231 21 Sep 04 12:47 LAG2 6 1 1223 1226 +- 177 -3 +- 200 3*CHK* 7231 21 Sep 04 13:01 LAG1 10 0 1217 1196 +- 69 20 +- 47 6*CHK* 7231 23 Sep 04 17:39 LAG2 3 0 1259 1534 +-2115 -143 +-1099 0 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 18 Sep 04 10:29 LAG2 14 0 16 1 +- 75 -9 +- 43 7 7237 18 Sep 04 13:27 LAG1 6 0 17 13 +- 231 17 +- 142 8 7237 18 Sep 04 14:45 LAG2 13 0 32 -30 +- 131 0 +- 76 10 7237 19 Sep 04 15:49 LAG1 5 0 23 21 +- 99 0 +- 240 8 7237 19 Sep 04 17:02 LAG2 9 0 25 23 +- 273 0 +- 140 5 7237 20 Sep 04 19:07 LAG2 6 0 2003 2029 +- 229 -18 +- 153 11*CHK* 7237 21 Sep 04 12:40 LAG2 9 0 2005 2006 +- 51 -5 +- 35 5*CHK* 7237 21 Sep 04 12:57 LAG1 8 0 2308 2286 +- 54 252 +- 32 127*CHK* 7237 21 Sep 04 17:08 LAG2 4 0 2044 2030 +- 197 20 +- 262 3*CHK* 7237 22 Sep 04 10:37 LAG2 24 0 19 7 +- 31 -11 +- 19 6 7237 22 Sep 04 11:27 LAG1 12 0 14 -1 +- 44 -3 +- 19 12 7237 22 Sep 04 14:58 LAG2 14 0 12 7 +- 44 -7 +- 32 7 7237 22 Sep 04 15:17 LAG1 5 0 65 31 +- 72 115 +- 221 33 7237 24 Sep 04 11:06 LAG2 9 0 23 28 +- 65 -12 +- 55 9 7237 24 Sep 04 12:26 LAG1 4 0 13 3 +- 171 -10 +- 217 7 7237 24 Sep 04 15:19 LAG2 12 0 10 2 +- 70 5 +- 53 6 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 18 Sep 04 13:27 LAG1 13 0 61 33 +- 42 20 +- 27 41 7249 18 Sep 04 14:29 LAG2 12 0 13 10 +- 68 -3 +- 53 11 7249 18 Sep 04 18:51 LAG2 3 0 18 47 +- 601 -31 +- 644 1 7249 19 Sep 04 20:29 LAG2 18 0 21 18 +- 40 -2 +- 35 9 7249 20 Sep 04 11:13 LAG1 6 0 51 18 +- 508 14 +- 233 10 7249 20 Sep 04 14:19 LAG1 5 0 31 -19 +- 212 9 +- 169 9 7249 20 Sep 04 14:33 LAG2 10 0 10 -13 +- 91 -3 +- 86 4 7249 20 Sep 04 18:31 LAG2 23 0 8 -5 +- 33 -1 +- 21 7 7249 21 Sep 04 12:27 LAG2 13 0 11 -18 +- 85 -9 +- 59 6 7249 21 Sep 04 12:58 LAG1 9 0 17 -16 +- 52 -6 +- 56 6 7249 21 Sep 04 16:37 LAG1 14 0 10 -10 +- 53 2 +- 56 4 7249 21 Sep 04 17:03 LAG2 16 0 29 2 +- 76 17 +- 47 4 7249 21 Sep 04 20:45 LAG2 7 0 28 71 +- 246 36 +- 190 7 7249 25 Sep 04 11:00 LAG1 12 0 26 -15 +- 44 -14 +- 33 9 7249 25 Sep 04 13:01 LAG2 16 0 21 -18 +- 39 -7 +- 31 11 7249 25 Sep 04 14:33 LAG1 10 0 22 -19 +- 50 -8 +- 49 13 7249 25 Sep 04 17:09 LAG2 20 0 7 0 +- 34 -1 +- 23 6 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 20 Sep 04 00:51 LAG2 11 0 14 14 +- 12 6 +- 18 2 7501 21 Sep 04 02:49 LAG2 10 0 13 15 +- 15 2 +- 11 1 7501 22 Sep 04 13:38 LAG2 1 0 50 0 +- 0 0 +- 0 0 7501 23 Sep 04 03:07 LAG2 8 0 2 4 +- 44 3 +- 30 1 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 18 Sep 04 00:00 LAG2 15 0 8 3 +- 115 -6 +- 66 3 7810 18 Sep 04 03:45 LAG2 18 0 6 4 +- 45 -5 +- 40 3 7810 18 Sep 04 10:29 LAG1 8 0 25 7 +- 239 15 +- 115 3 7810 18 Sep 04 14:03 LAG1 15 0 20 -20 +- 48 0 +- 27 2 7810 18 Sep 04 17:29 LAG1 15 0 13 10 +- 47 0 +- 29 8 7810 18 Sep 04 17:31 LAG2 15 0 7 -6 +- 48 2 +- 28 3 7810 18 Sep 04 20:51 LAG1 13 0 5 -2 +- 54 0 +- 29 4 7810 18 Sep 04 21:35 LAG2 19 0 13 -12 +- 42 -3 +- 25 3 7810 19 Sep 04 01:41 LAG2 28 0 8 -3 +- 34 -4 +- 21 3 7810 20 Sep 04 11:33 LAG1 4 0 19 -11 +- 108 8 +- 94 2 7810 20 Sep 04 14:55 LAG1 15 0 16 -16 +- 49 6 +- 30 2 7810 20 Sep 04 17:51 LAG2 18 0 17 -16 +- 43 4 +- 29 2 7810 20 Sep 04 18:11 LAG1 19 0 10 0 +- 42 4 +- 22 4 7810 21 Sep 04 09:57 LAG1 10 0 5 -1 +- 91 -2 +- 56 3 7810 21 Sep 04 13:31 LAG1 3 0 2 0 +-2067 0 +- 866 1 7810 21 Sep 04 20:01 LAG2 9 0 18 0 +- 110 15 +- 89 1 7810 21 Sep 04 20:47 LAG1 9 0 7 3 +- 220 -4 +- 100 1 7810 22 Sep 04 04:09 LAG2 13 0 17 17 +- 54 5 +- 70 5 7810 22 Sep 04 08:36 LAG1 8 0 11 -21 +- 131 -19 +- 116 1 7810 22 Sep 04 12:07 LAG1 17 0 12 -6 +- 45 -5 +- 22 1 7810 22 Sep 04 14:29 LAG2 3 0 42 -34 +- 261 -26 +- 806 1 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 18 Sep 04 00:01 LAG2 1 0 68 0 +- 0 0 +- 0 0 7811 21 Sep 04 20:15 LAG2 5 0 17 32 +- 171 26 +- 226 3 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 18 Sep 04 21:05 LAG1 2 0 78 55 +-1767 -17 +-1327 0 7824 19 Sep 04 01:57 LAG2 3 0 89 14 +- 562 -64 +- 476 2 7824 19 Sep 04 23:47 LAG2 3 0 49 170 +-1964 64 +-1029 8 7824 20 Sep 04 21:59 LAG2 5 0 67 71 +- 89 6 +- 136 1 7824 21 Sep 04 20:45 LAG1 5 0 87 103 +- 197 -10 +- 118 1 7824 22 Sep 04 00:13 LAG2 1 0 73 0 +- 0 0 +- 0 0 7824 22 Sep 04 19:15 LAG1 4 0 63 63 +- 119 1 +- 217 2 7824 22 Sep 04 22:17 LAG2 8 0 78 78 +- 43 -6 +- 88 2 7824 23 Sep 04 20:33 LAG2 7 0 64 46 +- 275 11 +- 167 6 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 23 Sep 04 12:45 LAG1 16 0 9 3 +- 10 3 +- 4 2 7825 23 Sep 04 16:19 LAG1 14 0 9 7 +- 11 3 +- 7 2 7825 23 Sep 04 17:51 LAG2 25 0 11 2 +- 8 6 +- 5 2 7825 23 Sep 04 19:49 LAG1 7 0 3 3 +- 17 -2 +- 29 0 7825 23 Sep 04 21:53 LAG2 22 0 5 -2 +- 9 -3 +- 6 2 7825 23 Sep 04 23:11 LAG1 15 0 7 -6 +- 13 0 +- 8 2 7825 24 Sep 04 02:22 LAG2 10 0 15 -11 +- 13 10 +- 14 6 7825 25 Sep 04 17:11 LAG1 1 0 22 0 +- 0 0 +- 0 0 7825 25 Sep 04 18:02 LAG2 12 0 6 11 +- 29 6 +- 17 4 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 18 Sep 04 07:17 LAG1 2 0 5 23 +- 375 20 +- 397 0 7832 18 Sep 04 13:47 LAG2 8 0 11 -6 +- 27 -17 +- 35 1 7832 18 Sep 04 17:07 LAG1 8 0 13 15 +- 70 1 +- 43 2 7832 18 Sep 04 17:49 LAG2 7 0 20 -40 +- 81 -21 +- 81 1 7832 18 Sep 04 20:47 LAG1 11 0 10 10 +- 20 -4 +- 24 3 7832 18 Sep 04 22:07 LAG2 12 0 24 -40 +- 43 -15 +- 33 4 7832 19 Sep 04 05:55 LAG1 6 0 26 24 +- 28 0 +- 33 9 7832 19 Sep 04 09:47 LAG1 3 0 7 -115 +- 627 48 +- 263 2 7832 19 Sep 04 15:49 LAG2 7 0 16 -11 +- 82 3 +- 62 1 7832 19 Sep 04 16:05 LAG1 6 0 14 14 +- 44 0 +- 64 2 7832 19 Sep 04 19:15 LAG1 10 0 5 -4 +- 29 -2 +- 18 4 7832 19 Sep 04 20:13 LAG2 11 0 7 -7 +- 26 -1 +- 39 3 7832 20 Sep 04 00:15 LAG2 13 0 12 10 +- 41 -1 +- 26 2 7832 20 Sep 04 08:21 LAG1 6 0 32 0 +- 198 13 +- 85 4 7832 20 Sep 04 14:01 LAG2 7 0 16 -22 +- 33 -17 +- 46 3 7832 20 Sep 04 17:59 LAG1 9 0 9 5 +- 22 6 +- 15 2 7832 20 Sep 04 18:29 LAG2 10 0 8 -21 +- 76 21 +- 61 2 7832 20 Sep 04 21:35 LAG1 10 0 6 5 +- 20 4 +- 36 1 7832 20 Sep 04 22:21 LAG2 12 0 4 -7 +- 45 -4 +- 32 3 7832 21 Sep 04 02:37 LAG2 3 0 32 19 +- 186 -21 +- 312 0 7832 21 Sep 04 06:39 LAG1 4 0 8 3 +- 144 9 +- 126 2 7832 21 Sep 04 16:08 LAG2 7 0 14 -14 +- 40 -1 +- 53 4 7832 21 Sep 04 16:35 LAG1 7 0 6 -12 +- 83 -4 +- 55 3 7832 21 Sep 04 20:07 LAG1 11 0 9 6 +- 23 -3 +- 22 2 7832 21 Sep 04 20:37 LAG2 11 0 17 11 +- 21 11 +- 36 7 7832 22 Sep 04 00:27 LAG2 7 0 28 36 +- 214 4 +- 105 1 7832 22 Sep 04 08:47 LAG1 6 0 25 8 +- 72 -12 +- 54 2 7832 22 Sep 04 14:17 LAG2 9 0 17 -15 +- 25 -2 +- 19 1 7832 22 Sep 04 18:28 LAG2 7 0 7 7 +- 34 1 +- 78 2 7832 22 Sep 04 18:57 LAG1 6 0 9 -10 +- 40 5 +- 37 6 7832 24 Sep 04 19:33 LAG1 12 0 19 -11 +- 20 10 +- 17 2 7832 24 Sep 04 22:53 LAG2 11 0 6 -4 +- 38 1 +- 29 2 7832 25 Sep 04 08:20 LAG1 8 0 14 7 +- 34 -11 +- 20 1 7832 25 Sep 04 12:33 LAG2 6 0 8 3 +- 62 -3 +- 69 5 7832 25 Sep 04 15:00 LAG1 5 0 13 15 +- 48 -4 +- 90 4 7832 25 Sep 04 16:31 LAG2 8 0 13 -18 +- 35 -17 +- 31 2 7832 25 Sep 04 18:03 LAG1 10 0 5 -12 +- 65 -6 +- 31 3 7832 25 Sep 04 20:51 LAG2 11 0 8 -13 +- 59 -14 +- 43 2 Station 7837 (Shanghai Observatory) (position fixed, acc. 50 mm) 7837 21 Sep 04 17:13 LAG2 11 0 15 -9 +- 116 13 +- 80 11 7837 23 Sep 04 13:01 LAG2 9 0 33 -26 +- 54 -23 +- 102 5 7837 23 Sep 04 13:53 LAG1 9 0 12 0 +- 144 5 +- 78 9 7837 23 Sep 04 17:11 LAG2 15 0 20 -17 +- 40 10 +- 31 6 7837 24 Sep 04 10:56 LAG2 13 0 12 -2 +- 44 0 +- 47 12 7837 24 Sep 04 15:31 LAG2 8 0 8 1 +- 169 -7 +- 139 3 7837 24 Sep 04 16:05 LAG1 4 0 6 16 +- 304 -24 +- 386 2 7837 24 Sep 04 19:21 LAG2 11 0 47 24 +- 46 42 +- 52 4 7837 25 Sep 04 11:03 LAG1 11 0 36 -22 +- 52 -18 +- 51 8 7837 25 Sep 04 13:11 LAG2 19 0 22 -10 +- 39 2 +- 37 19 7837 25 Sep 04 14:39 LAG1 8 0 22 40 +- 118 -25 +- 89 13 7837 25 Sep 04 17:23 LAG2 8 0 12 -9 +- 134 2 +- 112 3 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 18 Sep 04 10:19 LAG2 22 0 36 36 +- 24 0 +- 15 2 7838 18 Sep 04 13:23 LAG1 11 0 21 15 +- 29 14 +- 28 7 7838 18 Sep 04 14:23 LAG2 25 0 15 14 +- 19 3 +- 14 5 7838 25 Sep 04 13:07 LAG2 26 0 22 21 +- 18 2 +- 14 6 7838 25 Sep 04 17:23 LAG2 22 0 15 13 +- 20 1 +- 14 6 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 18 Sep 04 00:13 LAG2 9 0 6 20 +- 62 -11 +- 29 2 7839 18 Sep 04 13:51 LAG2 8 0 8 4 +- 14 -8 +- 17 0 7839 18 Sep 04 14:11 LAG1 5 0 10 -10 +- 18 0 +- 17 1 7839 18 Sep 04 17:21 LAG1 14 0 14 12 +- 11 0 +- 5 6 7839 18 Sep 04 17:31 LAG2 18 0 8 -5 +- 9 3 +- 4 2 7839 18 Sep 04 20:47 LAG1 21 0 4 -1 +- 9 -1 +- 4 2 7839 18 Sep 04 21:38 LAG2 24 0 8 -6 +- 8 -3 +- 5 1 7839 19 Sep 04 01:41 LAG2 25 0 7 3 +- 8 -3 +- 4 1 7839 19 Sep 04 15:41 LAG2 16 0 19 -8 +- 10 9 +- 6 3 7839 19 Sep 04 16:05 LAG1 9 0 4 0 +- 14 1 +- 7 4 7839 19 Sep 04 19:30 LAG1 13 0 9 -2 +- 11 -4 +- 5 3 7839 19 Sep 04 19:43 LAG2 14 0 10 -1 +- 11 5 +- 6 3 7839 19 Sep 04 23:11 LAG1 18 0 15 12 +- 9 -7 +- 8 3 7839 19 Sep 04 23:51 LAG2 22 0 6 5 +- 8 0 +- 4 2 7839 20 Sep 04 07:53 LAG1 3 0 4 16 +- 90 17 +- 106 0 7839 20 Sep 04 11:30 LAG1 14 0 15 -7 +- 14 8 +- 6 2 7839 20 Sep 04 13:58 LAG2 14 0 11 -5 +- 11 -8 +- 9 1 7839 20 Sep 04 14:47 LAG1 15 0 12 -6 +- 11 7 +- 6 1 7839 20 Sep 04 17:51 LAG2 19 0 11 -8 +- 9 4 +- 5 3 7839 20 Sep 04 18:13 LAG1 16 0 15 8 +- 11 4 +- 5 1 7839 20 Sep 04 21:43 LAG1 12 0 7 -7 +- 12 0 +- 6 2 7839 20 Sep 04 22:00 LAG2 14 0 3 -2 +- 11 -1 +- 8 1 7839 22 Sep 04 08:46 LAG1 3 0 3 -11 +- 73 -16 +- 107 0 7839 22 Sep 04 12:11 LAG1 3 0 12 14 +- 321 0 +- 147 0 7839 23 Sep 04 10:42 LAG1 18 0 5 0 +- 9 2 +- 5 2 Station 7845 (Grasse) (position fixed, acc. 20 mm) 7845 20 Sep 04 17:47 LAG2 21 0 4 2 +- 14 1 +- 8 3 7845 20 Sep 04 21:35 LAG1 31 0 10 5 +- 11 0 +- 5 8 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 18 Sep 04 03:49 LAG2 6 0 12 -7 +- 19 -5 +- 15 1 8834 18 Sep 04 07:08 LAG1 3 0 5 -1 +- 33 -25 +- 174 1 8834 18 Sep 04 10:47 LAG1 6 0 15 -19 +- 21 4 +- 10 2 8834 18 Sep 04 14:10 LAG1 2 0 34 -48 +- 231 -10 +- 163 0 8834 18 Sep 04 17:33 LAG1 9 0 4 2 +- 17 0 +- 16 4 8834 18 Sep 04 17:52 LAG2 8 0 23 -24 +- 15 7 +- 19 2 8834 18 Sep 04 21:15 LAG1 8 0 13 -1 +- 24 -8 +- 19 5 8834 18 Sep 04 22:13 LAG2 9 0 15 -30 +- 63 9 +- 35 5 8834 19 Sep 04 09:17 LAG1 5 0 20 1 +- 18 -12 +- 13 8 8834 19 Sep 04 12:55 LAG1 8 0 18 -17 +- 15 0 +- 17 4 8834 20 Sep 04 22:21 LAG1 3 0 17 -50 +- 556 15 +- 261 1 8834 21 Sep 04 13:37 LAG1 10 0 13 -13 +- 13 0 +- 13 2 8834 21 Sep 04 17:05 LAG1 4 0 9 1 +- 45 13 +- 58 1 8834 21 Sep 04 20:47 LAG2 4 0 13 222 +- 899 -86 +- 370 1 8834 21 Sep 04 20:58 LAG1 3 0 17 65 +- 597 -32 +- 233 2 8834 22 Sep 04 00:33 LAG1 4 0 8 45 +- 144 -50 +- 145 3 8834 22 Sep 04 00:43 LAG2 2 0 16 134 +- 961 -84 +- 542 0 8834 24 Sep 04 13:00 LAG1 6 0 17 -17 +- 17 1 +- 7 2 8834 24 Sep 04 14:41 LAG2 5 0 8 -10 +- 26 9 +- 66 1 8834 24 Sep 04 16:29 LAG1 5 0 14 0 +- 54 12 +- 49 3 8834 25 Sep 04 15:23 LAG1 2 0 17 -9 +- 121 -11 +- 164 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 040314 - 040920 0/ 21/ 0 0/ 9/ 0 30 1831 LVIL 040815 - 040918 0/ 13/ 0 0/ 16/ 0 29 1863 MDNLAS 040103 - 040117 0/ 2/ 0 0/ 4/ 0 6 1864 MD2LAS 040102 - 040925 0/140/ 0 0/ 67/ 0 207 1868 KOMLAS 040315 - 040614 0/ 15/ 0 0/ 3/ 0 18 1873 SIMLAS 040118 - 040813 0/ 33/ 0 0/ 15/ 0 48 1884 RIGLAS 040310 - 040926 0/ 67/ 1 0/ 12/ 0 80 1893 CRMLAS 040331 - 040921 0/ 55/ 0 0/ 35/ 0 90 6405 TIGO 040103 - 040924 2/ 15/ 2 3/ 4/ 0 26 6810 ZIMLAT 040107 - 040922 157/200/ 27 134/126/ 16 660 7080 MLRS25 040104 - 040922 54/ 88/ 12 64/ 82/ 6 306 7090 ML0514 040101 - 040927 201/256/ 43 167/283/ 34 984 7105 ML0725 040104 - 040924 20/ 95/ 8 5/ 88/ 9 225 7110 ML0414 040102 - 040922 103/213/ 19 112/142/ 21 610 7124 ML0819 040315 - 040921 0/ 27/ 0 0/ 15/ 0 42 7210 HOLLAS 040105 - 040607 33/ 49/ 3 50/ 52/ 6 193 7231 WUHA01 040408 - 040923 0/ 4/ 0 0/ 13/ 0 17 7237 CHALAS 040101 - 040926 0/304/ 6 0/189/ 2 501 7249 BEJLAS 040101 - 040927 0/195/ 1 0/154/ 0 350 7308 CRLLAS 040106 - 040311 5/ 47/ 0 0/ 38/ 2 92 7355 TROS02 040509 - 040829 0/ 82/ 0 0/ 34/ 0 116 7358 GMSL 040901 - 040901 0/ 1/ 0 0/ 1/ 0 2 7405 TIGO 040103 - 040823 0/ 12/ 2 0/ 4/ 0 18 7501 ML0616 040106 - 040927 53/ 50/ 18 81/134/ 14 350 7806 METLAS 040720 - 040814 0/ 4/ 0 0/ 4/ 0 8 7810 ZIMLAT 040507 - 040922 166/113/ 23 118/ 68/ 15 503 7811 POLLAS 040105 - 040921 0/111/ 0 0/ 63/ 0 174 7823 FTLR** 040612 - 040626 0/ 9/ 0 1/ 1/ 1 12 7824 SPNLAS 040109 - 040927 0/123/ 0 0/ 79/ 1 203 7825 STL3 040807 - 040925 17/ 7/ 3 31/ 4/ 3 65 7830 FTLR** 030903 - 030903 0/ 0/ 0 0/ 1/ 0 1 7832 SALRO 040102 - 040927 111/285/ 24 182/264/ 35 901 7835 GRASSE 040301 - 040816 1/ 64/ 3 0/ 33/ 1 102 7836 GFZLAS 040105 - 040701 0/ 38/ 0 0/ 21/ 1 60 7837 CHILAS 040102 - 040926 0/ 68/ 0 0/ 82/ 1 151 7838 SHOLAS 040105 - 040925 23/189/ 2 46/149/ 8 417 7839 AUSLAS 040107 - 040927 111/192/ 28 70/140/ 16 557 7840 RGOLAS 040102 - 040912 132/221/ 39 111/126/ 19 648 7841 GFZLA3 040112 - 040914 25/100/ 16 15/ 68/ 10 234 7845 GRASLL 040318 - 040920 13/ 27/ 0 11/ 14/ 1 66 7941 MLROnn 040111 - 040802 102/141/ 22 102/102/ 9 478 8834 WLRS01 040108 - 040925 197/192/ 40 166/136/ 19 750 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 040919.0 186.6 +/- 0.1 458.5 +/- 0.2 -32507.38 +/- 0.02 040920.0 188.0 +/- 0.1 454.9 +/- 0.1 -32507.49 +/- 0.03 040921.0 189.9 +/- 0.1 452.5 +/- 0.1 -32507.37 +/- 0.05 040922.0 192.5 +/- 0.1 450.3 +/- 0.1 -32507.22 +/- 0.06 040923.0 193.7 +/- 0.2 447.7 +/- 0.4 -32507.01 +/- 0.07 040924.0 194.7 +/- 0.4 447.3 +/- 0.2 -32506.94 +/- 0.08 040925.0 197.1 +/- 0.3 445.7 +/- 0.3 -32507.10 +/- 0.10 -------------------------------------------------------------- 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, 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 system 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 ******************************************************************************** |