| Date: | 2005-12-30 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 6591: Delft QL Report December 30, 2005 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2005-12-30 13:15:00 UTC Message No. 6591 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report December 30, 2005 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS December 30, 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, Dec 30, 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, Dec 30, 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 ------------------------------------------------------------------------------ 6405 Concepcion, Chile (TIGO 847) 051228 - 051229 2 1 6810 Zimmerwald 846, Switzerland 051229 - 051230 3 3 7080 McDonald Obs., Fort Davis, TX 051229 - 051229 2 1 7090 Yarragadee, Australia 051228 - 051229 3 2 7110 Monument Peak, California 051229 - 051229 1 1 7237 Changchun, China 051228 - 051229 6 3 7249 Beijing, China 051229 - 051229 - 1 7405 Concepcion, Chile (TIGO 424) 051229 - 051229 1 - 7501 Hartebeesthoek, SA (MOB-6) 051229 - 051229 1 - 7810 Zimmerwald 423, Switzerland 051229 - 051230 3 2 7811 Borowiec, Poland 051229 - 051230 1 - 7824 San Fernando, Spain 051230 - 051230 - 1 7825 Mount Stromlo, Australia 051228 - 051229 8 6 7832 Riyad, Saudi Arabia 051228 - 051229 5 3 7838 Simosato Observatory, Japan 051228 - 051228 - 1 7840 Herstmonceux, United Kingdom 051228 - 051229 5 3 7941 Matera, Italy (MLRO 532) 051228 - 051229 3 3 ------ ------ --- --- TOTAL 051228 - 051230 44 31 ------------------------------------------------------------------------------ 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, Dec 22, 2005 to Fri, Dec 30, 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 18 Number of Passes 105/100 96/ 95 Number of Normal Points 893/ 854 1038/ 983 Weighted RMS of Fit (mm) 165 130 ----------------------------------------------------------------------- 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 23 Dec 05 15:55 LAG2 9 0 106 89 +- 207 78 +- 208 31 1864 23 Dec 05 17:43 LAG1 7 0 46 18 +- 226 4 +- 204 42 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 22 Dec 05 15:50 LAG1 1 0 21 0 +- 0 0 +- 0 0 Station 6405 (Concepcion) (position solved, acc. 20 mm) 6405 28 Dec 05 05:31 LAG1 18 0 30 0 +- 15 22 +- 15 20 6405 29 Dec 05 06:38 LAG2 17 0 2547 2421 +- 16 281 +- 14 75*CHK* 6405 29 Dec 05 07:53 LAG1 14 0 23 13 +- 19 -5 +- 13 19 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 22 Dec 05 13:43 LAG2 9 0 28 4 +- 103 -39 +- 128 2 6810 22 Dec 05 19:23 LAG1 13 0 34 -33 +- 50 -1 +- 34 4 6810 22 Dec 05 21:23 LAG2 22 0 15 -5 +- 39 6 +- 21 8 6810 22 Dec 05 22:49 LAG1 5 0 8 -8 +- 134 -1 +- 104 3 6810 23 Dec 05 18:09 LAG1 12 0 44 0 +- 74 27 +- 46 4 6810 23 Dec 05 19:27 LAG2 23 0 15 5 +- 38 7 +- 22 6 6810 23 Dec 05 21:23 LAG1 9 0 73 -53 +- 89 16 +- 60 3 6810 23 Dec 05 23:31 LAG2 24 0 39 11 +- 37 19 +- 20 10 6810 24 Dec 05 00:43 LAG1 20 0 64 -24 +- 41 -31 +- 20 10 6810 26 Dec 05 22:13 LAG2 3 0 183 189 +- 131 600 +- 364 1*CHK* 6810 27 Dec 05 00:46 LAG1 1 0 209 0 +- 0 0 +- 0 0 6810 29 Dec 05 12:25 LAG2 7 0 826 -717 +- 74 595 +- 193 1*CHK* 6810 29 Dec 05 13:25 LAG1 16 0 529 -476 +- 49 -78 +- 37 57*CHK* 6810 29 Dec 05 16:11 LAG2 2 0 293 1718 +-9999 759 +-9999 0 6810 29 Dec 05 23:37 LAG1 11 0 432 1028 +- 136 397 +- 66 36*CHK* Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 22 Dec 05 02:40 LAG2 19 0 36 34 +- 16 0 +- 12 11 7080 27 Dec 05 05:35 LAG2 3 0 119 -564 +- 184 -476 +- 152 0*CHK* 7080 27 Dec 05 08:08 LAG1 4 0 179 -1134 +- 287 458 +- 131 4*CHK* 7080 29 Dec 05 01:30 LAG2 19 0 135 147 +- 17 -94 +- 14 13*CHK* 7080 29 Dec 05 02:11 LAG1 4 0 579 -626 +- 242 35 +- 181 8*CHK* 7080 29 Dec 05 05:11 LAG1 3 0 571 453 +- 202 -122 +- 208 3*CHK* Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 22 Dec 05 01:02 LAG2 11 0 83 -82 +- 12 -13 +- 20 5*CHK* 7090 22 Dec 05 18:00 LAG1 19 0 39 0 +- 9 -27 +- 6 3 7090 22 Dec 05 18:41 LAG2 22 0 19 -15 +- 9 4 +- 5 5 7090 22 Dec 05 22:49 LAG2 14 0 45 -14 +- 14 29 +- 12 7 7090 23 Dec 05 03:09 LAG2 12 0 16 24 +- 25 26 +- 20 2 7090 23 Dec 05 16:47 LAG1 11 0 54 -49 +- 12 34 +- 22 3 7090 23 Dec 05 17:07 LAG2 9 0 47 46 +- 14 -35 +- 31 1 7090 23 Dec 05 20:07 LAG1 13 0 35 -31 +- 15 2 +- 7 3 7090 23 Dec 05 20:53 LAG2 14 0 25 -13 +- 12 11 +- 8 5 7090 23 Dec 05 23:55 LAG1 7 0 25 39 +- 35 -18 +- 37 5 7090 24 Dec 05 01:15 LAG2 12 0 70 73 +- 13 15 +- 19 1*CHK* 7090 24 Dec 05 03:07 LAG1 6 0 18 20 +- 23 -7 +- 42 1 7090 24 Dec 05 05:21 LAG2 10 0 36 -23 +- 14 10 +- 7 9 7090 24 Dec 05 06:36 LAG1 5 0 80 -60 +- 55 -16 +- 44 1 7090 26 Dec 05 23:40 LAG2 2 0 177 -92 +- 38 896 +- 155 0*CHK* 7090 27 Dec 05 03:51 LAG2 4 0 81 -23 +- 84 -124 +- 100 2 7090 27 Dec 05 17:23 LAG2 18 0 791 633 +- 9 365 +- 8 38*CHK* 7090 27 Dec 05 21:19 LAG2 11 0 123 119 +- 20 133 +- 14 8*CHK* 7090 27 Dec 05 21:45 LAG1 12 0 311 213 +- 12 203 +- 8 7*CHK* 7090 28 Dec 05 01:39 LAG2 13 0 395 -667 +- 19 -477 +- 18 25*CHK* 7090 28 Dec 05 04:43 LAG1 9 0 643 -1601 +- 39 681 +- 22 26*CHK* 7090 28 Dec 05 16:55 LAG1 6 0 185 -310 +- 74 -108 +- 61 1*CHK* 7090 28 Dec 05 23:33 LAG2 16 0 30 36 +- 14 18 +- 13 14 7090 29 Dec 05 00:05 LAG1 5 0 89 3 +- 28 190 +- 62 3 7090 29 Dec 05 03:31 LAG1 4 0 809 606 +- 156 125 +- 95 4*CHK* 7090 29 Dec 05 03:51 LAG2 10 0 131 422 +- 49 204 +- 29 5*CHK* Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 22 Dec 05 00:51 LAG1 4 0 16 -186 +- 258 -81 +- 109 2 7110 22 Dec 05 02:31 LAG2 23 0 8 -1 +- 8 -4 +- 6 5 7110 22 Dec 05 04:31 LAG1 3 0 77 102 +- 57 -68 +- 141 0 7110 29 Dec 05 05:25 LAG1 5 0 175 69 +- 24 -232 +- 26 3*CHK* 7110 29 Dec 05 05:43 LAG2 8 0 271 171 +- 16 112 +- 12 6*CHK* Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 23 Dec 05 10:43 LAG1 4 0 51 58 +- 97 -32 +- 237 6 7237 23 Dec 05 12:27 LAG2 10 0 158 152 +- 78 6 +- 62 5*CHK* 7237 23 Dec 05 13:59 LAG1 7 0 176 178 +- 58 18 +- 77 9*CHK* 7237 26 Dec 05 10:20 LAG1 1 0 100 0 +- 0 0 +- 0 0 7237 26 Dec 05 10:36 LAG2 11 0 292 378 +- 66 -113 +- 43 76*CHK* 7237 28 Dec 05 10:53 LAG2 10 0 1090 193 +- 64 -890 +- 47 18*CHK* 7237 28 Dec 05 11:03 LAG1 2 0 1136 438 +-1223 684 +-1198 0 7237 28 Dec 05 14:15 LAG1 7 0 703 -704 +- 59 11 +- 88 10*CHK* 7237 28 Dec 05 14:57 LAG2 3 0 38 232 +-1046 139 +- 733 2 7237 28 Dec 05 17:29 LAG1 9 0 126 123 +- 51 -9 +- 21 27*CHK* 7237 29 Dec 05 09:05 LAG2 8 0 511 340 +- 110 131 +- 77 7*CHK* 7237 29 Dec 05 09:29 LAG1 9 0 1607 -1622 +- 51 -186 +- 50 48*CHK* 7237 29 Dec 05 16:09 LAG1 11 0 205 -93 +- 46 -88 +- 22 12 7237 29 Dec 05 19:49 LAG1 2 0 2700 -3550 +-2343 -586 +-1615 0*CHK* Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 22 Dec 05 09:59 LAG2 14 0 43 -12 +- 41 35 +- 35 13 7249 22 Dec 05 11:58 LAG1 12 0 174 -99 +- 46 -108 +- 43 16*CHK* 7249 22 Dec 05 14:06 LAG2 8 0 69 116 +- 133 128 +- 110 8 7249 22 Dec 05 15:25 LAG1 10 0 210 278 +- 68 -102 +- 58 15*CHK* 7249 22 Dec 05 19:10 LAG1 5 0 57 -114 +- 683 69 +- 282 18 7249 23 Dec 05 10:47 LAG1 4 0 91 -34 +- 81 -168 +- 186 5 7249 23 Dec 05 12:19 LAG2 4 0 251 224 +- 76 225 +- 141 5*CHK* 7249 26 Dec 05 10:27 LAG2 4 0 317 768 +- 524 369 +- 418 6*CHK* 7249 29 Dec 05 13:15 LAG2 4 4 0 0 +- 0 0 +- 0 0 Station 7405 (Concepcion) (position solved, acc. 20 mm) 7405 29 Dec 05 07:56 LAG1 10 0 23 10 +- 32 -17 +- 21 11 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 23 Dec 05 01:40 LAG1 3 0 12 24 +- 88 13 +- 95 0 7501 23 Dec 05 02:31 LAG2 12 0 15 -14 +- 17 13 +- 10 1 7501 24 Dec 05 03:55 LAG1 2 0 154 162 +- 58 -45 +- 268 0*CHK* 7501 27 Dec 05 02:45 LAG2 3 0 36 38 +- 616 0 +- 306 1 7501 27 Dec 05 07:14 LAG2 1 0 9 0 +- 0 0 +- 0 0 7501 29 Dec 05 04:15 LAG1 3 0 636 -825 +- 201 152 +- 160 0*CHK* Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 22 Dec 05 13:44 LAG2 5 0 16 6 +- 161 -40 +- 295 3 7810 22 Dec 05 19:27 LAG1 8 0 31 -31 +- 64 -1 +- 58 3 7810 22 Dec 05 21:23 LAG2 22 0 15 -5 +- 39 7 +- 22 7 7810 22 Dec 05 22:49 LAG1 6 0 10 -13 +- 125 -3 +- 104 2 7810 23 Dec 05 18:09 LAG1 11 0 47 5 +- 75 29 +- 51 3 7810 23 Dec 05 19:27 LAG2 19 0 18 13 +- 41 6 +- 23 6 7810 23 Dec 05 21:25 LAG1 8 0 68 -54 +- 78 14 +- 55 4 7810 23 Dec 05 23:39 LAG2 20 0 43 19 +- 43 17 +- 23 5 7810 24 Dec 05 00:47 LAG1 16 0 73 -20 +- 46 -34 +- 21 7 7810 26 Dec 05 22:12 LAG2 2 0 103 225 +- 488 640 +-1035 0 7810 27 Dec 05 00:47 LAG1 1 0 210 0 +- 0 0 +- 0 0 7810 29 Dec 05 12:32 LAG2 3 0 607 -712 +- 200 559 +- 871 5*CHK* 7810 29 Dec 05 13:27 LAG1 14 0 542 -491 +- 54 -80 +- 45 49*CHK* 7810 29 Dec 05 23:39 LAG1 10 0 447 1008 +- 141 383 +- 73 30*CHK* Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 29 Dec 05 23:49 LAG1 6 0 990 -476 +- 181 393 +- 133 14*CHK* Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 22 Dec 05 21:41 LAG2 7 0 118 122 +- 105 -3 +- 76 2 7824 27 Dec 05 02:17 LAG2 3 0 110 -83 +- 121 -16 +- 63 4 7824 27 Dec 05 19:59 LAG2 8 0 93 110 +- 82 184 +- 91 3 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 22 Dec 05 21:31 LAG1 8 1 39 10 +- 21 31 +- 22 3 7825 22 Dec 05 23:17 LAG2 13 0 15 -8 +- 13 -19 +- 15 4 7825 24 Dec 05 02:40 LAG1 7 0 41 -108 +- 57 -40 +- 31 4*CHK* 7825 24 Dec 05 15:07 LAG1 8 0 25 -49 +- 40 -24 +- 36 3 7825 24 Dec 05 15:26 LAG2 5 0 55 -35 +- 18 -85 +- 35 6 7825 24 Dec 05 18:39 LAG1 14 0 51 6 +- 11 -27 +- 6 3 7825 24 Dec 05 19:15 LAG2 20 0 115 49 +- 9 -76 +- 6 4 7825 26 Dec 05 02:13 LAG2 9 0 81 479 +- 84 -237 +- 42 15*CHK* 7825 26 Dec 05 03:43 LAG1 2 0 64 109 +- 106 157 +- 343 0 7825 27 Dec 05 02:03 LAG1 16 0 159 157 +- 11 60 +- 5 24*CHK* 7825 27 Dec 05 04:21 LAG2 7 0 222 636 +- 106 -239 +- 59 4*CHK* 7825 27 Dec 05 17:31 LAG2 12 0 535 166 +- 16 393 +- 10 6*CHK* 7825 27 Dec 05 18:02 LAG1 16 0 181 -99 +- 11 -61 +- 5 6*CHK* 7825 28 Dec 05 00:59 LAG1 10 0 822 -976 +- 15 457 +- 12 35*CHK* 7825 28 Dec 05 01:57 LAG2 11 0 235 222 +- 13 -19 +- 8 7*CHK* 7825 28 Dec 05 04:21 LAG1 5 0 142 425 +- 69 340 +- 47 3*CHK* 7825 28 Dec 05 16:41 LAG1 20 0 156 -67 +- 9 79 +- 5 11*CHK* 7825 28 Dec 05 19:37 LAG2 18 0 101 129 +- 12 58 +- 8 6*CHK* 7825 28 Dec 05 20:16 LAG1 11 0 230 26 +- 13 237 +- 13 9*CHK* 7825 28 Dec 05 23:47 LAG1 5 0 153 23 +- 27 262 +- 52 3*CHK* 7825 29 Dec 05 00:11 LAG2 6 0 48 57 +- 21 100 +- 44 3 7825 29 Dec 05 02:50 LAG1 2 0 927 -665 +-1130 97 +- 418 0 7825 29 Dec 05 04:31 LAG2 6 0 54 147 +- 90 -124 +- 59 5*CHK* 7825 29 Dec 05 15:18 LAG1 16 0 95 -85 +- 10 30 +- 7 4*CHK* 7825 29 Dec 05 17:41 LAG2 18 0 102 59 +- 10 40 +- 5 59 7825 29 Dec 05 18:48 LAG1 16 0 320 -332 +- 11 47 +- 5 57*CHK* 7825 29 Dec 05 21:55 LAG2 19 0 688 668 +- 10 485 +- 9 4*CHK* Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 22 Dec 05 12:33 LAG1 7 0 135 138 +- 25 -65 +- 34 3*CHK* 7832 23 Dec 05 15:32 LAG2 3 0 33 576 +- 678 345 +- 403 8 7832 23 Dec 05 21:13 LAG1 8 0 256 246 +- 24 38 +- 33 5*CHK* 7832 24 Dec 05 00:07 LAG2 11 0 35 8 +- 21 -36 +- 24 5 7832 24 Dec 05 00:35 LAG1 11 0 51 56 +- 22 39 +- 22 5 7832 24 Dec 05 14:05 LAG2 4 0 148 157 +- 315 -5 +- 207 3 7832 24 Dec 05 22:33 LAG2 1 0 40 0 +- 0 0 +- 0 0 7832 24 Dec 05 23:10 LAG1 9 0 62 78 +- 35 66 +- 23 3 7832 28 Dec 05 14:07 LAG2 3 0 334 665 +- 633 211 +- 403 0 7832 28 Dec 05 14:45 LAG1 8 0 198 -194 +- 23 40 +- 22 15*CHK* 7832 28 Dec 05 18:39 LAG2 11 0 266 -251 +- 20 -58 +- 30 16*CHK* 7832 28 Dec 05 21:15 LAG1 7 0 63 216 +- 86 126 +- 50 5*CHK* 7832 28 Dec 05 22:33 LAG2 8 0 446 507 +- 97 34 +- 53 2*CHK* 7832 29 Dec 05 00:55 LAG1 10 0 507 -514 +- 21 180 +- 28 4*CHK* 7832 29 Dec 05 10:07 LAG1 2 0 2912 2912 +- 51 -1 +- 535 0*CHK* 7832 29 Dec 05 13:21 LAG1 11 0 317 -129 +- 19 187 +- 12 12*CHK* Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 22 Dec 05 05:59 LAG2 11 0 157 51 +- 31 -114 +- 27 9 7838 22 Dec 05 08:28 LAG1 11 0 110 -102 +- 29 44 +- 27 7*CHK* 7838 22 Dec 05 10:15 LAG2 11 0 97 -59 +- 38 -45 +- 36 8 7838 22 Dec 05 14:29 LAG2 9 0 11 11 +- 34 -5 +- 37 4 7838 22 Dec 05 15:13 LAG1 8 0 15 -9 +- 35 -10 +- 40 4 7838 24 Dec 05 09:15 LAG1 2 0 276 194 +- 734 -61 +- 553 0 7838 26 Dec 05 06:27 LAG2 2 0 181 881 +-2674 459 +-1753 0 7838 27 Dec 05 12:53 LAG2 7 0 609 967 +- 84 1335 +- 85 19*CHK* 7838 28 Dec 05 07:01 LAG2 5 0 403 72 +- 183 -301 +- 116 5*CHK* 7838 28 Dec 05 07:19 LAG1 14 0 730 510 +- 25 371 +- 18 6*CHK* 7838 28 Dec 05 15:02 LAG2 7 0 264 216 +- 36 120 +- 24 4*CHK* Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 22 Dec 05 00:04 LAG2 1 0 169 0 +- 0 0 +- 0 0 7839 22 Dec 05 00:07 LAG1 3 0 78 -3 +- 74 -51 +- 46 0 7839 22 Dec 05 15:43 LAG1 7 0 15 -22 +- 23 -7 +- 11 2 7839 22 Dec 05 17:25 LAG2 23 0 25 -25 +- 9 0 +- 4 3 7839 22 Dec 05 19:11 LAG1 16 0 18 -19 +- 10 -1 +- 5 3 7839 22 Dec 05 21:35 LAG2 16 0 6 0 +- 10 4 +- 6 1 7839 22 Dec 05 22:42 LAG1 10 0 3 -1 +- 13 -2 +- 12 1 7839 23 Dec 05 02:31 LAG1 10 0 23 24 +- 26 0 +- 19 1 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 22 Dec 05 17:29 LAG2 14 0 22 -22 +- 18 0 +- 14 1 7840 24 Dec 05 13:09 LAG1 10 0 164 164 +- 20 26 +- 33 6*CHK* 7840 24 Dec 05 17:31 LAG2 4 0 72 -19 +- 625 -41 +- 285 1 7840 27 Dec 05 15:55 LAG2 3 0 425 773 +- 691 633 +- 366 1*CHK* 7840 28 Dec 05 14:09 LAG2 14 0 352 246 +- 17 328 +- 20 16*CHK* 7840 28 Dec 05 14:41 LAG1 17 0 231 -213 +- 16 -41 +- 9 40*CHK* 7840 28 Dec 05 17:57 LAG2 17 0 268 251 +- 16 67 +- 9 51*CHK* 7840 28 Dec 05 18:11 LAG1 15 0 277 -274 +- 17 21 +- 9 52*CHK* 7840 28 Dec 05 21:41 LAG1 2 0 169 -159 +- 47 17 +- 23 0*CHK* 7840 29 Dec 05 13:24 LAG1 12 0 475 -388 +- 19 -202 +- 22 31*CHK* 7840 29 Dec 05 16:13 LAG2 12 0 174 181 +- 20 27 +- 21 17*CHK* 7840 29 Dec 05 16:54 LAG1 2 0 179 -475 +-1364 -128 +- 589 0 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 25 Dec 05 15:13 LAG1 13 0 44 3 +- 11 -6 +- 6 42 7841 25 Dec 05 15:47 LAG2 4 0 103 -1109 +- 234 -636 +- 131 2*CHK* Station 7941 (Matera) (position solved, acc. 10 mm) 7941 22 Dec 05 12:27 LAG1 4 0 52 12 +- 50 -68 +- 85 6 7941 22 Dec 05 13:25 LAG2 18 0 50 -49 +- 9 6 +- 9 8 7941 23 Dec 05 14:23 LAG1 12 0 71 -137 +- 32 -37 +- 15 8*CHK* 7941 23 Dec 05 16:01 LAG2 7 0 25 -221 +- 148 103 +- 66 1*CHK* 7941 23 Dec 05 17:59 LAG1 18 0 20 16 +- 9 6 +- 6 4 7941 23 Dec 05 19:33 LAG2 21 0 34 -2 +- 9 23 +- 6 3 7941 23 Dec 05 21:21 LAG1 10 0 42 -33 +- 19 9 +- 16 3 7941 23 Dec 05 23:45 LAG2 9 0 80 -83 +- 17 -4 +- 10 7*CHK* 7941 24 Dec 05 00:41 LAG1 5 0 66 -147 +- 99 -38 +- 45 1 7941 24 Dec 05 13:05 LAG1 16 0 23 15 +- 10 -8 +- 7 7 7941 24 Dec 05 13:41 LAG2 15 0 51 19 +- 10 -49 +- 10 3 7941 24 Dec 05 16:59 LAG1 7 0 134 -60 +- 46 -46 +- 28 2 7941 24 Dec 05 17:31 LAG2 27 0 26 25 +- 8 -2 +- 4 4 7941 28 Dec 05 14:17 LAG2 4 0 156 166 +- 22 255 +- 82 1*CHK* 7941 28 Dec 05 15:07 LAG1 3 0 388 -500 +- 163 76 +- 109 2*CHK* 7941 28 Dec 05 18:01 LAG2 20 0 45 33 +- 10 -28 +- 6 17 7941 28 Dec 05 21:49 LAG1 3 0 143 -151 +- 42 23 +- 98 1*CHK* 7941 28 Dec 05 22:13 LAG2 25 0 127 126 +- 8 -7 +- 4 20*CHK* 7941 29 Dec 05 01:29 LAG1 6 0 83 -510 +- 140 245 +- 61 3*CHK* -------------------------------------------------------------------------------- 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 051005 - 051102 0/ 9/ 0 0/ 3/ 0 12 1831 LVIL 050703 - 051103 0/ 68/ 0 0/ 15/ 0 83 1864 MD2LAS 050701 - 051223 0/124/ 0 0/ 55/ 0 179 1873 SIMLAS 050701 - 051222 0/ 59/ 0 0/ 12/ 0 71 1884 RIGLAS 050703 - 051219 0/100/ 1 0/ 25/ 0 126 1893 CRMLAS 050723 - 051013 0/ 17/ 0 0/ 0/ 0 17 6405 TIGO 050705 - 051229 51/ 15/ 3 45/ 33/ 4 151 6810 ZIMLAT 050701 - 051230 108/225/ 22 146/124/ 19 644 7080 MLRS25 050701 - 051229 7/ 78/ 2 10/ 66/ 3 166 7090 ML0514 050701 - 051229 198/153/ 33 163/221/ 19 787 7105 ML0725 050704 - 051221 14/100/ 11 22/ 61/ 7 215 7110 ML0414 050701 - 051229 47/188/ 28 54/ 95/ 9 421 7124 ML0819 050818 - 051102 1/ 14/ 2 1/ 32/ 1 51 7130 TL04** 050803 - 051219 8/ 26/ 1 12/ 11/ 2 60 7237 CHALAS 050410 - 051229 0/196/ 2 0/131/ 0 329 7249 BEJLAS 050703 - 051229 0/ 99/ 0 0/ 66/ 0 165 7355 TROS02 050701 - 050906 0/ 24/ 0 0/ 0/ 0 24 7358 GMSL 050802 - 051129 7/ 16/ 0 2/ 8/ 0 33 7405 TIGO 050705 - 051229 2/ 6/ 0 0/ 9/ 0 17 7501 ML0616 050701 - 051229 26/ 46/ 5 15/ 64/ 5 161 7810 ZIMLAT 050701 - 051230 107/222/ 22 147/121/ 19 638 7811 POLLAS 050704 - 051230 0/ 89/ 0 0/ 23/ 0 112 7821 CHILAS 051213 - 051218 0/ 4/ 0 0/ 9/ 0 13 7824 SPNLAS 050701 - 051230 10/152/ 8 10/ 88/ 7 275 7825 STL3 050702 - 051229 304/117/ 24 161/175/ 23 804 7832 SALRO 050702 - 051229 95/227/ 25 105/167/ 21 640 7835 GRASSE 050701 - 050705 0/ 3/ 0 0/ 2/ 0 5 7838 SHOLAS 050714 - 051228 23/104/ 8 26/ 89/ 4 254 7839 AUSLAS 050702 - 051223 54/139/ 22 95/ 58/ 5 373 7840 RGOLAS 050702 - 051229 77/229/ 28 112/108/ 13 567 7841 GFZLA3 050713 - 051225 8/ 87/ 9 7/ 32/ 3 146 7848 FTLR06 050515 - 051027 6/ 48/ 2 5/ 22/ 4 87 7941 MLROnn 050701 - 051229 55/149/ 12 71/ 70/ 11 368 8834 WLRS01 050702 - 051212 81/169/ 27 111/ 82/ 11 481 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 051223.0 64.5 +/- 0.1 388.7 +/- 0.2 -32711.83 +/- 0.03 051224.0 56.2 +/- 0.2 386.5 +/- 0.1 -32712.74 +/- 0.06 051225.0 63.2 +/- 0.2 402.6 +/- 0.3 -32713.19 +/- 0.09 051226.0 114.0 +/- 0.7 307.5 +/- 1.0 -32697.15 +/- 0.13 051227.0 80.7 +/- 0.3 385.1 +/- 0.3 -32690.10 +/- 0.14 051228.0 49.9 +/- 0.2 377.8 +/- 0.2 -32678.65 +/- 0.15 051229.0 61.4 +/- 0.1 399.6 +/- 0.1 -32654.79 +/- 0.17 -------------------------------------------------------------- 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 ******************************************************************************** |