| Date: | 2004-11-30 13:07:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 4603: Delft QL Report November 30, 2004 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2004-11-30 13:07:00 UTC Message No. 4603 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report November 30, 2004 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS November 30, 2004 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 Tue, Nov 30, 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 Tue, Nov 30, 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) 041126 - 041126 1 1 6810 Zimmerwald 846, Switzerland 041127 - 041128 5 6 7090 Yarragadee, Australia 041128 - 041129 3 1 7105 Greenbelt, Maryland 041128 - 041129 2 2 7237 Changchun, China 041127 - 041129 3 3 7806 Metsahovi, Finland 041127 - 041127 1 - 7810 Zimmerwald 423, Switzerland 041127 - 041128 5 6 7825 Mount Stromlo, Australia 041126 - 041129 11 12 7832 Riyad, Saudi Arabia 041127 - 041130 6 5 7837 Shanghai Observatory, China 041127 - 041129 4 4 7838 Simosato Observatory, Japan 041128 - 041129 4 4 7839 Graz, Austria 041126 - 041127 4 3 7840 Herstmonceux, United Kingdom 041128 - 041129 2 1 7941 Matera, Italy (MLRO 532) 041129 - 041129 - 1 8834 Wettzell, Germany 041129 - 041130 4 3 ------ ------ --- --- TOTAL 041126 - 041130 55 52 ------------------------------------------------------------------------------ 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 Mon, Nov 22, 2004 to Tue, Nov 30, 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 22 22 Number of Passes 192/191 170/169 Number of Normal Points 1989/1957 2069/2052 Weighted RMS of Fit (mm) 13 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 22 Nov 04 13:22 LAG1 4 0 40 44 +- 427 -13 +- 765 10 1864 22 Nov 04 15:29 LAG2 7 0 25 -8 +- 273 -3 +- 199 24 1864 23 Nov 04 13:37 LAG2 7 0 51 -38 +- 239 16 +- 216 18 1864 26 Nov 04 14:37 LAG1 6 0 474 -202 +- 245 -74 +- 94 385 1864 26 Nov 04 15:57 LAG2 8 0 14 -9 +- 212 3 +- 139 9 Station 6405 (Concepcion) (position solved, acc. 20 mm) 6405 24 Nov 04 13:59 LAG2 5 0 5 -4 +- 93 -3 +- 71 5 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 22 Nov 04 10:09 LAG1 2 0 3 101 +-6721 49 +-3167 0 6810 22 Nov 04 10:47 LAG2 2 0 9 273 +-9999 112 +-4685 0 6810 22 Nov 04 13:33 LAG1 15 0 5 1 +- 47 1 +- 32 5 6810 22 Nov 04 14:53 LAG2 17 0 9 -7 +- 45 -3 +- 29 5 6810 22 Nov 04 17:27 LAG1 4 0 18 17 +-1243 -14 +- 513 0 6810 22 Nov 04 19:25 LAG2 13 0 9 -8 +- 120 0 +- 71 2 6810 22 Nov 04 20:41 LAG1 6 0 6 -2 +- 114 -9 +- 199 5 6810 23 Nov 04 15:35 LAG1 11 0 20 -19 +- 56 0 +- 39 5 6810 23 Nov 04 17:07 LAG2 12 0 7 -11 +- 86 -6 +- 57 3 6810 23 Nov 04 19:07 LAG1 14 0 9 -8 +- 49 -1 +- 32 3 6810 23 Nov 04 21:09 LAG2 11 0 16 -15 +- 58 -8 +- 51 6 6810 24 Nov 04 07:15 LAG1 11 0 15 0 +- 111 7 +- 56 4 6810 24 Nov 04 07:30 LAG2 4 0 12 -13 +- 124 5 +- 423 1 6810 24 Nov 04 10:57 LAG1 9 0 25 -25 +- 61 -1 +- 32 3 6810 24 Nov 04 11:35 LAG2 9 0 6 -16 +- 319 5 +- 158 2 6810 24 Nov 04 14:18 LAG1 11 0 15 -13 +- 56 3 +- 39 4 6810 24 Nov 04 15:09 LAG2 12 0 7 -8 +- 66 -2 +- 37 4 6810 24 Nov 04 17:39 LAG1 14 0 16 -13 +- 49 -4 +- 22 5 6810 24 Nov 04 19:12 LAG2 17 0 6 -3 +- 48 0 +- 33 5 6810 24 Nov 04 21:31 LAG1 1 0 1 0 +- 0 0 +- 0 0 6810 25 Nov 04 09:29 LAG2 6 0 21 -19 +- 89 -3 +- 71 3 6810 25 Nov 04 09:34 LAG1 11 0 12 -10 +- 55 0 +- 33 6 6810 25 Nov 04 12:57 LAG1 6 0 3 2 +- 96 0 +- 54 2 6810 25 Nov 04 13:13 LAG2 16 0 16 -10 +- 45 8 +- 36 4 6810 25 Nov 04 16:19 LAG1 12 0 10 -6 +- 53 -4 +- 33 6 6810 25 Nov 04 17:25 LAG2 15 0 5 -2 +- 48 -1 +- 34 5 6810 26 Nov 04 11:15 LAG2 14 0 17 -17 +- 49 0 +- 25 4 6810 26 Nov 04 11:36 LAG1 10 0 14 -14 +- 59 4 +- 34 3 6810 26 Nov 04 15:07 LAG1 16 0 10 4 +- 46 5 +- 32 3 6810 26 Nov 04 15:29 LAG2 19 0 14 -11 +- 42 -2 +- 29 7 6810 27 Nov 04 09:23 LAG2 21 0 20 -9 +- 40 -9 +- 23 3 6810 27 Nov 04 10:15 LAG1 16 0 25 -24 +- 51 0 +- 29 4 6810 27 Nov 04 13:25 LAG2 17 0 24 -15 +- 45 8 +- 26 3 6810 27 Nov 04 13:43 LAG1 11 0 18 1 +- 59 -10 +- 34 6 6810 27 Nov 04 17:10 LAG1 14 0 27 0 +- 57 -13 +- 27 5 6810 27 Nov 04 17:35 LAG2 23 0 6 -5 +- 38 0 +- 24 3 6810 27 Nov 04 21:03 LAG1 4 0 29 -10 +- 116 -21 +- 120 8 6810 27 Nov 04 21:45 LAG2 6 0 18 -17 +- 78 -19 +- 275 7 6810 28 Nov 04 07:55 LAG2 8 0 10 4 +- 107 -13 +- 134 6 6810 28 Nov 04 09:15 LAG1 8 0 14 -19 +- 112 5 +- 73 4 6810 28 Nov 04 11:28 LAG2 8 1 116 -34 +- 72 48 +- 53 81 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 24 Nov 04 18:27 LAG2 17 0 8 5 +- 16 -4 +- 12 2 7080 24 Nov 04 22:46 LAG2 17 0 6 -5 +- 16 0 +- 17 2 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 22 Nov 04 00:00 LAG1 1 0 10 0 +- 0 0 +- 0 0 7090 22 Nov 04 12:13 LAG1 7 0 9 -11 +- 111 -1 +- 47 6 7090 22 Nov 04 12:39 LAG2 4 0 10 -10 +- 32 2 +- 114 0 7090 22 Nov 04 20:41 LAG2 12 0 5 11 +- 29 8 +- 22 1 7090 22 Nov 04 22:39 LAG1 8 0 7 -12 +- 27 6 +- 20 3 7090 23 Nov 04 10:57 LAG1 9 0 10 2 +- 29 -6 +- 24 1 7090 23 Nov 04 14:39 LAG1 8 0 11 -10 +- 17 -2 +- 21 1 7090 23 Nov 04 14:55 LAG2 7 0 6 -14 +- 58 8 +- 40 4 7090 24 Nov 04 16:59 LAG2 3 0 6 -4 +- 29 -13 +- 152 1 7090 25 Nov 04 11:37 LAG1 25 0 13 -7 +- 8 -4 +- 4 6 7090 25 Nov 04 14:47 LAG2 12 0 10 -6 +- 12 5 +- 9 2 7090 25 Nov 04 15:17 LAG1 8 0 16 2 +- 23 -14 +- 24 1 7090 25 Nov 04 21:57 LAG1 9 0 25 -23 +- 14 12 +- 9 1 7090 25 Nov 04 23:09 LAG2 2 0 15 506 +-1713 208 +- 724 0 7090 26 Nov 04 10:25 LAG1 17 0 16 -15 +- 10 7 +- 9 2 7090 26 Nov 04 12:47 LAG2 19 0 3 0 +- 9 0 +- 6 3 7090 26 Nov 04 13:51 LAG1 14 0 7 0 +- 11 3 +- 6 2 7090 26 Nov 04 16:51 LAG2 23 0 6 0 +- 8 4 +- 6 2 7090 27 Nov 04 19:07 LAG2 11 0 10 14 +- 43 3 +- 30 2 7090 27 Nov 04 19:29 LAG1 8 0 10 6 +- 26 -15 +- 27 1 7090 27 Nov 04 22:49 LAG1 14 0 20 -21 +- 16 1 +- 9 6 7090 27 Nov 04 23:27 LAG2 4 0 9 -5 +- 42 -8 +- 26 2 7090 28 Nov 04 11:07 LAG1 16 0 8 -5 +- 10 -4 +- 6 2 7090 28 Nov 04 12:57 LAG2 25 0 7 -4 +- 8 -3 +- 5 2 7090 28 Nov 04 15:02 LAG1 4 0 17 -23 +- 62 3 +- 33 2 7090 29 Nov 04 10:03 LAG1 3 0 17 -17 +- 27 -10 +- 153 0 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 27 Nov 04 02:17 LAG1 6 0 12 2 +- 63 8 +- 53 1 7105 27 Nov 04 03:17 LAG2 11 0 5 -2 +- 15 -3 +- 17 1 7105 28 Nov 04 23:19 LAG1 10 0 3 -3 +- 15 0 +- 10 2 7105 28 Nov 04 23:43 LAG2 3 0 16 -16 +- 94 0 +- 173 0 7105 29 Nov 04 02:52 LAG1 4 0 6 0 +- 69 10 +- 111 0 7105 29 Nov 04 03:35 LAG2 12 0 9 -14 +- 20 15 +- 26 4 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 23 Nov 04 16:33 LAG1 6 0 22 -20 +- 27 2 +- 28 4 7110 23 Nov 04 20:25 LAG2 7 0 18 -25 +- 25 -15 +- 32 2 7110 24 Nov 04 04:39 LAG2 6 1 25 -25 +- 22 -3 +- 16 8 7110 25 Nov 04 05:07 LAG1 4 0 11 2 +- 97 -12 +- 95 0 7110 25 Nov 04 13:51 LAG1 4 0 33 33 +- 22 2 +- 53 1 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 27 Nov 04 08:53 LAG1 3 0 7 -8 +- 28 -10 +- 134 0 Station 7237 (Changchun) (position fixed, acc. 50 mm) 7237 23 Nov 04 09:58 LAG2 5 0 6 0 +- 88 0 +- 62 5 7237 23 Nov 04 11:32 LAG1 13 0 27 -21 +- 51 6 +- 38 6 7237 24 Nov 04 10:42 LAG1 3 0 6 -75 +-1726 33 +- 712 3 7237 27 Nov 04 09:35 LAG1 13 0 16 9 +- 43 2 +- 23 11 7237 27 Nov 04 10:21 LAG2 12 0 14 10 +- 52 -9 +- 31 5 7237 28 Nov 04 08:43 LAG2 4 0 40 -40 +- 219 1 +- 224 7 7237 28 Nov 04 11:55 LAG1 6 0 11 3 +- 63 4 +- 44 8 7237 29 Nov 04 10:37 LAG1 6 0 11 -2 +- 62 12 +- 111 8 7237 29 Nov 04 10:50 LAG2 7 0 7 8 +- 143 -8 +- 114 6 Station 7405 (Concepcion) (position solved, acc. 20 mm) 7405 24 Nov 04 12:05 LAG1 2 0 5 -25 +- 238 -19 +- 172 0 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 25 Nov 04 00:49 LAG2 3 0 29 -3 +- 294 31 +- 287 2 7501 25 Nov 04 18:37 LAG2 1 0 11 0 +- 0 0 +- 0 0 7501 26 Nov 04 18:09 LAG1 8 0 30 4 +- 41 15 +- 24 6 Station 7806 (Metsahovi) (position fixed, acc. 30 mm) 7806 27 Nov 04 17:31 LAG1 8 0 23 -13 +- 71 -7 +- 52 3 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 22 Nov 04 10:09 LAG1 2 0 8 -18 +-6164 -12 +-2905 0 7810 22 Nov 04 10:47 LAG2 2 0 8 -299 +-9999 -115 +-4102 0 7810 22 Nov 04 13:33 LAG1 14 0 7 6 +- 49 1 +- 35 2 7810 22 Nov 04 14:55 LAG2 17 0 6 0 +- 45 -3 +- 30 3 7810 22 Nov 04 17:27 LAG1 5 0 14 -16 +- 968 0 +- 388 1 7810 22 Nov 04 19:25 LAG2 12 0 5 3 +- 122 -5 +- 76 2 7810 22 Nov 04 20:41 LAG1 6 0 6 3 +- 110 -4 +- 190 1 7810 23 Nov 04 13:47 LAG2 2 0 15 -252 +-9999 97 +-7788 0 7810 23 Nov 04 15:35 LAG1 10 0 9 -9 +- 62 0 +- 44 2 7810 23 Nov 04 17:07 LAG2 13 0 16 5 +- 62 -7 +- 39 4 7810 23 Nov 04 19:05 LAG1 15 0 2 1 +- 51 0 +- 33 2 7810 23 Nov 04 21:09 LAG2 9 0 17 2 +- 61 -12 +- 48 6 7810 24 Nov 04 07:15 LAG1 11 0 10 13 +- 111 9 +- 56 3 7810 24 Nov 04 07:30 LAG2 3 0 10 11 +- 120 -26 +- 614 0 7810 24 Nov 04 10:57 LAG1 7 0 17 -17 +- 70 -1 +- 37 1 7810 24 Nov 04 11:35 LAG2 9 0 8 7 +- 298 0 +- 145 3 7810 24 Nov 04 14:18 LAG1 12 0 7 -3 +- 52 2 +- 34 5 7810 24 Nov 04 15:13 LAG2 11 0 11 -2 +- 58 -6 +- 33 3 7810 24 Nov 04 17:39 LAG1 14 0 10 0 +- 52 -4 +- 24 5 7810 24 Nov 04 19:11 LAG2 15 0 10 10 +- 63 1 +- 40 5 7810 24 Nov 04 21:31 LAG1 2 0 12 -5 +-3086 -22 +-3856 0 7810 25 Nov 04 09:31 LAG2 4 0 4 1 +- 112 -3 +- 97 2 7810 25 Nov 04 09:34 LAG1 13 0 7 0 +- 51 -3 +- 29 4 7810 25 Nov 04 12:56 LAG1 7 0 11 11 +- 75 2 +- 42 5 7810 25 Nov 04 13:21 LAG2 16 0 11 -3 +- 46 9 +- 38 2 7810 25 Nov 04 16:19 LAG1 11 0 7 1 +- 58 -4 +- 37 2 7810 25 Nov 04 17:25 LAG2 15 0 9 8 +- 47 -1 +- 31 3 7810 26 Nov 04 11:15 LAG2 14 0 4 -1 +- 49 0 +- 27 3 7810 26 Nov 04 11:36 LAG1 11 0 8 -2 +- 58 4 +- 32 3 7810 26 Nov 04 15:00 LAG1 17 0 15 10 +- 44 6 +- 29 4 7810 26 Nov 04 15:29 LAG2 18 0 5 0 +- 43 0 +- 31 5 7810 27 Nov 04 09:23 LAG2 18 0 15 3 +- 43 -7 +- 26 7 7810 27 Nov 04 10:14 LAG1 16 0 13 -11 +- 52 1 +- 30 3 7810 27 Nov 04 13:25 LAG2 15 0 18 -4 +- 51 9 +- 30 3 7810 27 Nov 04 13:42 LAG1 11 0 14 7 +- 59 -8 +- 34 4 7810 27 Nov 04 17:09 LAG1 13 0 22 2 +- 54 -11 +- 26 3 7810 27 Nov 04 17:35 LAG2 23 0 7 5 +- 39 -1 +- 23 5 7810 27 Nov 04 21:03 LAG1 3 0 25 -7 +- 117 -27 +- 153 0 7810 27 Nov 04 21:46 LAG2 6 0 4 -3 +- 76 1 +- 263 2 7810 28 Nov 04 07:57 LAG2 6 0 5 7 +- 155 -13 +- 212 1 7810 28 Nov 04 09:15 LAG1 8 0 8 -13 +- 111 8 +- 73 2 7810 28 Nov 04 11:28 LAG2 4 1 14 -11 +- 106 -8 +- 97 0 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 24 Nov 04 17:53 LAG1 13 0 18 18 +- 52 -5 +- 43 3 7811 24 Nov 04 19:36 LAG2 3 0 41 35 +- 184 6 +- 233 11 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 22 Nov 04 20:30 LAG1 11 0 61 68 +- 54 -6 +- 31 6 7824 23 Nov 04 19:05 LAG1 1 0 60 0 +- 0 0 +- 0 0 7824 24 Nov 04 18:19 LAG1 3 0 21 -21 +-2395 15 +- 887 5 7824 24 Nov 04 19:55 LAG2 2 0 58 172 +-3215 -57 +-1609 0 7824 24 Nov 04 21:39 LAG1 5 0 62 87 +- 224 -22 +- 191 2 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 22 Nov 04 08:49 LAG1 11 0 8 -12 +- 21 5 +- 17 2 7825 22 Nov 04 12:01 LAG1 15 0 5 6 +- 14 1 +- 8 1 7825 22 Nov 04 12:31 LAG2 27 0 5 3 +- 8 1 +- 4 2 7825 22 Nov 04 15:33 LAG1 13 0 6 3 +- 11 -5 +- 12 2 7825 22 Nov 04 16:41 LAG2 25 0 4 4 +- 8 0 +- 6 2 7825 22 Nov 04 18:45 LAG1 21 0 10 -1 +- 9 -5 +- 5 5 7825 22 Nov 04 20:59 LAG2 18 0 13 5 +- 9 5 +- 5 3 7825 22 Nov 04 22:15 LAG1 21 0 14 1 +- 9 4 +- 5 12 7825 23 Nov 04 10:39 LAG1 24 0 5 0 +- 8 0 +- 4 4 7825 23 Nov 04 14:13 LAG1 14 0 6 -5 +- 11 -4 +- 10 2 7825 23 Nov 04 14:41 LAG2 27 0 5 2 +- 8 -2 +- 5 2 7825 23 Nov 04 17:31 LAG1 12 0 4 -4 +- 12 -2 +- 9 1 7825 23 Nov 04 19:07 LAG2 21 0 7 -3 +- 9 -3 +- 6 1 7825 23 Nov 04 20:51 LAG1 23 0 18 -3 +- 8 8 +- 4 4 7825 23 Nov 04 23:03 LAG2 21 0 9 -1 +- 9 -6 +- 6 2 7825 24 Nov 04 09:51 LAG1 7 0 14 -10 +- 116 10 +- 50 3 7825 25 Nov 04 08:23 LAG1 6 0 19 -12 +- 74 -5 +- 55 2 7825 25 Nov 04 10:53 LAG2 25 0 6 3 +- 8 3 +- 5 3 7825 25 Nov 04 11:45 LAG1 15 0 19 -9 +- 16 -6 +- 9 2 7825 25 Nov 04 14:55 LAG2 28 0 6 2 +- 7 2 +- 5 3 7825 25 Nov 04 18:15 LAG1 19 0 18 -10 +- 9 -8 +- 6 2 7825 25 Nov 04 19:23 LAG2 21 0 3 -3 +- 10 0 +- 6 1 7825 25 Nov 04 21:47 LAG1 19 0 6 -5 +- 10 2 +- 6 3 7825 26 Nov 04 09:23 LAG2 7 0 6 -5 +- 16 0 +- 51 4 7825 26 Nov 04 10:05 LAG1 24 0 13 0 +- 8 6 +- 4 4 7825 26 Nov 04 12:59 LAG2 26 0 3 0 +- 8 0 +- 4 3 7825 26 Nov 04 13:53 LAG1 9 0 10 5 +- 22 5 +- 20 2 7825 26 Nov 04 16:59 LAG1 14 0 6 5 +- 11 -1 +- 10 2 7825 26 Nov 04 17:27 LAG2 19 0 4 0 +- 11 2 +- 8 2 7825 26 Nov 04 20:19 LAG1 22 0 11 -6 +- 9 5 +- 4 3 7825 26 Nov 04 21:24 LAG2 24 0 13 -1 +- 8 7 +- 5 1 7825 27 Nov 04 09:23 LAG1 3 0 7 -127 +- 709 55 +- 304 6 7825 27 Nov 04 11:11 LAG2 19 0 11 9 +- 9 -3 +- 7 2 7825 27 Nov 04 12:39 LAG1 4 0 14 5 +- 68 -19 +- 69 5 7825 27 Nov 04 19:31 LAG2 24 0 3 2 +- 8 -1 +- 5 1 7825 27 Nov 04 22:39 LAG1 17 0 5 3 +- 11 -3 +- 8 2 7825 27 Nov 04 23:40 LAG2 15 0 8 7 +- 12 -8 +- 11 2 7825 28 Nov 04 09:27 LAG2 13 0 5 -2 +- 11 -5 +- 18 3 7825 28 Nov 04 10:55 LAG1 19 0 5 1 +- 9 0 +- 5 5 7825 28 Nov 04 13:11 LAG2 28 0 9 3 +- 7 -4 +- 4 3 7825 28 Nov 04 14:27 LAG1 14 0 12 8 +- 11 -8 +- 10 3 7825 28 Nov 04 17:41 LAG2 18 0 3 0 +- 11 0 +- 8 2 7825 28 Nov 04 21:05 LAG1 20 0 11 -4 +- 9 4 +- 5 5 7825 28 Nov 04 21:44 LAG2 21 0 12 3 +- 9 6 +- 6 2 7825 29 Nov 04 13:15 LAG1 14 0 6 -2 +- 13 1 +- 10 5 7825 29 Nov 04 19:57 LAG2 16 0 6 3 +- 13 1 +- 8 3 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 22 Nov 04 06:45 LAG1 9 0 6 3 +- 22 5 +- 25 1 7832 22 Nov 04 07:19 LAG2 2 0 12 -19 +- 590 6 +- 607 0 7832 22 Nov 04 11:07 LAG2 8 0 10 -4 +- 24 7 +- 24 2 7832 22 Nov 04 13:35 LAG1 4 0 23 41 +- 248 -11 +- 158 1 7832 22 Nov 04 16:33 LAG1 7 0 9 -48 +- 131 -21 +- 62 1 7832 22 Nov 04 19:31 LAG2 9 0 4 0 +- 26 -4 +- 29 2 7832 23 Nov 04 09:23 LAG2 10 0 20 -35 +- 45 16 +- 36 3 7832 23 Nov 04 13:25 LAG2 12 0 10 10 +- 19 0 +- 15 2 7832 23 Nov 04 15:11 LAG1 9 0 9 -32 +- 75 -14 +- 37 2 7832 23 Nov 04 17:39 LAG2 6 0 11 -12 +- 105 -16 +- 77 1 7832 24 Nov 04 14:15 LAG1 8 0 12 4 +- 68 4 +- 42 2 7832 24 Nov 04 15:45 LAG2 7 0 10 -26 +- 68 -17 +- 59 2 7832 24 Nov 04 17:27 LAG1 7 0 5 -6 +- 63 -6 +- 50 4 7832 27 Nov 04 03:29 LAG1 3 0 12 22 +- 123 16 +- 179 0 7832 28 Nov 04 15:29 LAG1 6 0 11 -13 +- 127 -1 +- 67 3 7832 28 Nov 04 16:09 LAG2 7 0 8 -3 +- 116 -7 +- 72 3 7832 29 Nov 04 04:15 LAG1 10 0 14 14 +- 21 0 +- 16 2 7832 29 Nov 04 07:55 LAG1 6 0 8 -7 +- 81 3 +- 66 7 7832 29 Nov 04 10:01 LAG2 7 0 29 -29 +- 25 2 +- 63 2 7832 29 Nov 04 14:05 LAG1 9 0 14149 -11 +- 66 -8000 +- 37 4*CHK* 7832 29 Nov 04 14:21 LAG2 8 0 4898 -15 +- 30 -7998 +- 50 2*CHK* 7832 29 Nov 04 17:49 LAG1 6 0 3 0 +- 27 -5 +- 54 2 7832 29 Nov 04 18:17 LAG2 16 0 11 7 +- 17 -5 +- 18 2 Station 7835 (Grasse) (position fixed, acc. 30 mm) 7835 22 Nov 04 20:29 LAG1 19 0 16 15 +- 22 -3 +- 16 4 7835 23 Nov 04 17:01 LAG2 15 0 28 12 +- 33 -9 +- 17 3 7835 23 Nov 04 18:59 LAG1 22 0 16 16 +- 20 0 +- 12 2 7835 24 Nov 04 17:33 LAG1 12 0 37 -24 +- 33 -17 +- 13 7 7835 25 Nov 04 20:07 LAG1 10 0 22 15 +- 36 -22 +- 32 7 7835 25 Nov 04 21:45 LAG2 6 0 12 15 +- 122 -33 +- 154 1 Station 7837 (Shanghai Observatory) (position fixed, acc. 50 mm) 7837 22 Nov 04 12:23 LAG2 6 0 9 -23 +- 652 14 +- 312 6 7837 24 Nov 04 12:17 LAG2 6 0 59 68 +- 73 -54 +- 97 14 7837 27 Nov 04 09:45 LAG1 10 0 28 -32 +- 63 11 +- 52 13 7837 27 Nov 04 10:28 LAG2 2 0 13 -21 +- 200 -10 +- 189 0 7837 27 Nov 04 13:09 LAG1 10 0 31 -26 +- 51 -14 +- 65 18 7837 27 Nov 04 14:33 LAG2 6 1 43 -5 +- 94 113 +- 331 23 7837 28 Nov 04 11:47 LAG1 14 0 33 -28 +- 41 -10 +- 34 6 7837 28 Nov 04 12:35 LAG2 16 0 14 -12 +- 41 8 +- 34 6 7837 29 Nov 04 10:37 LAG1 5 0 74 62 +- 145 13 +- 154 4 7837 29 Nov 04 10:46 LAG2 4 0 57 67 +- 191 15 +- 273 5 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 22 Nov 04 02:35 LAG1 14 0 31 29 +- 25 11 +- 21 5 7838 22 Nov 04 03:23 LAG2 11 0 35 22 +- 29 -11 +- 13 8 7838 22 Nov 04 07:41 LAG2 26 0 26 21 +- 18 8 +- 13 5 7838 22 Nov 04 09:09 LAG1 24 0 35 34 +- 19 2 +- 9 3 7838 22 Nov 04 11:46 LAG2 26 0 24 22 +- 18 4 +- 12 4 7838 24 Nov 04 00:05 LAG1 16 0 22 26 +- 33 -4 +- 18 5 7838 25 Nov 04 01:51 LAG2 11 0 43 42 +- 33 0 +- 26 5 7838 25 Nov 04 06:04 LAG2 14 0 8 7 +- 25 1 +- 28 4 7838 25 Nov 04 08:36 LAG1 23 0 25 25 +- 20 0 +- 10 2 7838 25 Nov 04 10:03 LAG2 30 0 31 25 +- 17 9 +- 10 7 7838 25 Nov 04 12:15 LAG1 18 0 29 -29 +- 22 0 +- 21 5 7838 27 Nov 04 02:23 LAG2 13 0 14 35 +- 74 -14 +- 40 4 7838 27 Nov 04 06:09 LAG2 22 0 16 2 +- 21 -10 +- 17 6 7838 27 Nov 04 09:21 LAG1 26 0 24 24 +- 18 0 +- 9 4 7838 27 Nov 04 10:19 LAG2 28 0 27 27 +- 18 0 +- 10 3 7838 28 Nov 04 04:31 LAG2 10 0 10 4 +- 50 -13 +- 52 4 7838 28 Nov 04 08:03 LAG1 16 0 17 12 +- 27 -4 +- 17 3 7838 28 Nov 04 08:37 LAG2 17 0 12 12 +- 24 -4 +- 21 2 7838 28 Nov 04 11:37 LAG1 21 0 13 -12 +- 20 -2 +- 15 4 7838 28 Nov 04 12:31 LAG2 20 0 14 -12 +- 21 -3 +- 21 4 7838 29 Nov 04 00:17 LAG1 16 0 19 22 +- 29 -4 +- 17 3 7838 29 Nov 04 02:15 LAG2 22 0 19 18 +- 20 -2 +- 13 5 7838 29 Nov 04 06:31 LAG2 13 0 19 -11 +- 37 9 +- 37 3 7838 29 Nov 04 06:59 LAG1 14 0 13 15 +- 32 -7 +- 23 4 7838 29 Nov 04 10:11 LAG1 18 0 16 18 +- 26 6 +- 15 3 7838 29 Nov 04 10:49 LAG2 19 0 30 19 +- 28 9 +- 19 2 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 22 Nov 04 10:05 LAG1 7 0 5 3 +- 16 -2 +- 8 1 7839 22 Nov 04 16:53 LAG1 11 0 8 -4 +- 12 -3 +- 5 2 7839 22 Nov 04 18:57 LAG2 16 0 9 3 +- 10 -4 +- 6 1 7839 22 Nov 04 20:30 LAG1 5 0 20 18 +- 25 -2 +- 22 2 7839 23 Nov 04 08:47 LAG1 3 0 8 11 +- 304 10 +- 163 0 7839 23 Nov 04 09:17 LAG2 6 0 5 4 +- 17 -3 +- 33 0 7839 23 Nov 04 12:17 LAG1 8 0 7 -3 +- 15 6 +- 14 0 7839 23 Nov 04 13:09 LAG2 5 0 4 -7 +- 71 -2 +- 52 1 7839 23 Nov 04 15:35 LAG1 12 0 11 -10 +- 12 -1 +- 7 1 7839 23 Nov 04 17:23 LAG2 2 0 11 -8 +- 418 -18 +- 381 0 7839 23 Nov 04 19:01 LAG1 7 0 6 -19 +- 56 -9 +- 31 2 7839 24 Nov 04 03:56 LAG1 8 0 8 16 +- 31 -15 +- 43 1 7839 24 Nov 04 07:13 LAG1 15 0 17 11 +- 10 5 +- 4 4 7839 24 Nov 04 07:29 LAG2 6 0 14 15 +- 18 -17 +- 50 1 7839 24 Nov 04 10:55 LAG1 10 0 2 -2 +- 13 0 +- 8 0 7839 24 Nov 04 11:09 LAG2 18 0 12 -1 +- 10 7 +- 6 3 7839 24 Nov 04 14:17 LAG1 12 0 8 4 +- 12 4 +- 8 2 7839 24 Nov 04 15:19 LAG2 15 0 12 0 +- 10 -8 +- 7 1 7839 24 Nov 04 17:31 LAG1 12 0 4 1 +- 15 0 +- 6 3 7839 24 Nov 04 19:10 LAG2 12 0 11 11 +- 14 0 +- 10 2 7839 25 Nov 04 05:45 LAG1 23 0 7 3 +- 9 -2 +- 5 4 7839 25 Nov 04 09:11 LAG2 15 0 3 0 +- 10 0 +- 7 3 7839 25 Nov 04 09:33 LAG1 12 0 3 -1 +- 12 -1 +- 6 1 7839 25 Nov 04 13:01 LAG1 14 0 14 14 +- 11 -2 +- 9 0 7839 25 Nov 04 13:23 LAG2 20 0 11 -5 +- 9 7 +- 6 4 7839 25 Nov 04 16:15 LAG1 8 0 7 -1 +- 16 -3 +- 7 2 7839 25 Nov 04 17:17 LAG2 17 0 4 3 +- 11 -1 +- 6 0 7839 25 Nov 04 19:53 LAG1 9 0 20 13 +- 14 -7 +- 10 2 7839 25 Nov 04 21:21 LAG2 16 0 6 6 +- 10 0 +- 11 1 7839 26 Nov 04 04:20 LAG1 19 0 9 3 +- 10 -3 +- 7 5 7839 26 Nov 04 07:27 LAG2 15 0 10 2 +- 11 -9 +- 9 1 7839 26 Nov 04 08:11 LAG1 15 0 7 -5 +- 11 3 +- 5 0 7839 26 Nov 04 11:19 LAG2 11 0 9 -7 +- 12 2 +- 6 2 7839 26 Nov 04 11:34 LAG1 8 0 8 -1 +- 16 4 +- 9 1 7839 26 Nov 04 14:56 LAG1 8 0 17 8 +- 16 5 +- 7 4 7839 26 Nov 04 15:23 LAG2 14 0 4 -2 +- 11 -1 +- 5 1 7839 26 Nov 04 18:27 LAG1 11 0 7 -2 +- 12 -1 +- 5 6 7839 26 Nov 04 19:29 LAG2 16 0 8 4 +- 10 5 +- 7 0 7839 27 Nov 04 17:45 LAG1 5 0 33 78 +- 431 -39 +- 154 2 7839 27 Nov 04 17:49 LAG2 19 0 3 -1 +- 13 0 +- 8 1 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 22 Nov 04 11:17 LAG2 8 0 14 7 +- 78 4 +- 51 2 7840 22 Nov 04 13:37 LAG1 6 0 12 24 +- 88 9 +- 61 1 7840 22 Nov 04 17:27 LAG1 4 0 8 7 +- 178 -7 +- 82 1 7840 25 Nov 04 09:35 LAG1 12 0 9 4 +- 19 -4 +- 11 4 7840 25 Nov 04 13:01 LAG1 11 0 11 11 +- 20 -2 +- 12 4 7840 25 Nov 04 13:41 LAG2 7 0 16 17 +- 126 0 +- 72 3 7840 26 Nov 04 15:49 LAG2 4 0 5 13 +- 168 -8 +- 146 2 7840 26 Nov 04 18:37 LAG1 4 0 10 11 +- 36 2 +- 21 1 7840 28 Nov 04 12:29 LAG1 13 0 3 0 +- 18 -1 +- 13 2 7840 29 Nov 04 18:07 LAG2 2 0 3 4 +- 221 -28 +- 893 0 7840 29 Nov 04 18:23 LAG1 9 0 21 16 +- 68 2 +- 36 2 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 25 Nov 04 17:27 LAG2 15 1 6 -3 +- 11 -3 +- 11 4 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 22 Nov 04 06:35 LAG1 9 0 8 18 +- 31 10 +- 21 1 7941 22 Nov 04 11:09 LAG2 6 1 7 -6 +- 21 1 +- 14 5 7941 22 Nov 04 13:43 LAG1 9 0 13 18 +- 26 -5 +- 21 2 7941 22 Nov 04 15:03 LAG2 4 0 10 -2 +- 319 -5 +- 173 6 7941 22 Nov 04 16:45 LAG1 11 0 4 11 +- 39 4 +- 18 1 7941 22 Nov 04 20:31 LAG1 4 0 8 7 +- 119 -1 +- 115 0 7941 24 Nov 04 07:17 LAG1 19 0 5 2 +- 9 0 +- 4 4 7941 24 Nov 04 07:39 LAG2 5 0 9 26 +- 141 -23 +- 95 3 7941 24 Nov 04 17:33 LAG1 12 0 3 1 +- 12 -1 +- 5 1 7941 24 Nov 04 19:21 LAG2 11 0 8 12 +- 19 7 +- 15 3 7941 25 Nov 04 05:59 LAG1 11 0 9 8 +- 22 1 +- 16 5 7941 25 Nov 04 09:29 LAG1 4 0 12 40 +- 324 21 +- 135 1 7941 25 Nov 04 09:49 LAG2 6 0 13 29 +- 235 -18 +- 100 1 7941 25 Nov 04 12:59 LAG1 5 0 12 20 +- 65 7 +- 55 3 7941 25 Nov 04 13:27 LAG2 17 0 11 -3 +- 10 9 +- 9 3 7941 25 Nov 04 16:17 LAG1 5 0 7 -2 +- 19 -4 +- 12 0 7941 25 Nov 04 17:29 LAG2 18 0 5 0 +- 10 -2 +- 5 3 7941 25 Nov 04 20:15 LAG1 3 0 3 5 +- 173 -2 +- 183 0 7941 26 Nov 04 08:10 LAG1 14 0 9 -7 +- 12 1 +- 8 3 7941 26 Nov 04 11:29 LAG2 13 0 14 -13 +- 11 4 +- 13 1 7941 26 Nov 04 15:05 LAG1 6 0 13 23 +- 31 16 +- 34 0 7941 29 Nov 04 14:35 LAG2 3 0 11 202 +-1488 -93 +- 650 0 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 23 Nov 04 17:07 LAG2 12 0 11 -6 +- 12 -3 +- 6 7 8834 23 Nov 04 19:11 LAG1 9 0 17 -17 +- 14 0 +- 12 3 8834 23 Nov 04 21:09 LAG2 9 0 8 -16 +- 29 -15 +- 32 2 8834 24 Nov 04 07:17 LAG1 13 0 13 -1 +- 11 4 +- 5 8 8834 24 Nov 04 07:35 LAG2 6 0 26 -7 +- 28 -19 +- 28 3 8834 24 Nov 04 10:53 LAG1 8 0 25 -25 +- 15 1 +- 6 3 8834 24 Nov 04 11:07 LAG2 10 0 17 -8 +- 13 9 +- 8 5 8834 24 Nov 04 14:35 LAG1 3 0 16 6 +- 106 -25 +- 118 0 8834 24 Nov 04 15:09 LAG2 14 0 7 6 +- 23 4 +- 14 6 8834 24 Nov 04 19:11 LAG2 16 0 5 -5 +- 14 0 +- 10 2 8834 24 Nov 04 21:32 LAG1 8 0 6 -3 +- 18 -14 +- 39 3 8834 25 Nov 04 05:53 LAG1 16 0 19 -7 +- 12 -4 +- 8 14 8834 25 Nov 04 09:13 LAG2 4 0 13 10 +- 62 11 +- 34 5 8834 25 Nov 04 09:33 LAG1 7 0 11 0 +- 29 6 +- 22 7 8834 25 Nov 04 13:29 LAG1 3 0 16 -2 +- 512 -5 +- 211 8 8834 25 Nov 04 13:39 LAG2 13 0 10 -17 +- 24 6 +- 13 4 8834 25 Nov 04 16:17 LAG1 6 0 13 -15 +- 22 -3 +- 11 4 8834 25 Nov 04 17:24 LAG2 13 0 13 -2 +- 11 -6 +- 6 3 8834 25 Nov 04 20:09 LAG1 7 0 6 -4 +- 16 -6 +- 36 3 8834 26 Nov 04 04:37 LAG1 4 0 12 -18 +- 70 -11 +- 119 2 8834 26 Nov 04 08:09 LAG1 5 0 32 -16 +- 123 7 +- 61 0 8834 29 Nov 04 11:23 LAG1 5 2 36 -34 +- 70 -2 +- 80 1 8834 29 Nov 04 13:47 LAG2 6 0 26 -27 +- 105 0 +- 58 1 8834 29 Nov 04 14:41 LAG1 6 0 17 -17 +- 17 5 +- 25 3 8834 29 Nov 04 18:21 LAG2 5 0 22 -23 +- 128 0 +- 79 5 -------------------------------------------------------------------------------- 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 - 041105 0/ 24/ 0 0/ 18/ 0 42 1831 LVIL 040815 - 041105 0/ 21/ 0 0/ 24/ 0 45 1863 MDNLAS 040103 - 040117 0/ 2/ 0 0/ 4/ 0 6 1864 MD2LAS 040102 - 041126 0/158/ 0 0/ 88/ 0 246 1868 KOMLAS 040315 - 040614 0/ 15/ 0 0/ 3/ 0 18 1873 SIMLAS 040118 - 040813 0/ 51/ 0 0/ 23/ 0 74 1884 RIGLAS 040310 - 041116 0/ 77/ 1 0/ 21/ 2 101 1893 CRMLAS 040331 - 041012 0/ 63/ 0 0/ 41/ 0 104 6405 TIGO 040103 - 041124 4/ 18/ 2 4/ 5/ 0 33 6810 ZIMLAT 040107 - 041128 204/228/ 33 166/158/ 18 807 7080 MLRS25 040104 - 041124 66/ 98/ 12 78/100/ 8 362 7090 ML0514 040101 - 041129 236/352/ 50 192/341/ 38 1209 7105 ML0725 040104 - 041129 20/109/ 9 5/107/ 9 259 7110 ML0414 040102 - 041125 119/233/ 21 125/169/ 24 691 7124 ML0819 040315 - 041127 0/ 38/ 0 0/ 16/ 0 54 7210 HOLLAS 040105 - 040607 33/ 49/ 3 50/ 52/ 6 193 7231 WUHA01 040408 - 041118 0/ 6/ 0 0/ 19/ 0 25 7237 CHALAS 040101 - 041129 0/350/ 6 0/242/ 3 601 7249 BEJLAS 040101 - 041110 0/225/ 1 0/192/ 0 418 7308 CRLLAS 040106 - 040311 5/ 47/ 0 0/ 38/ 2 92 7355 TROS02 040509 - 040829 0/ 84/ 0 0/ 34/ 0 118 7405 TIGO 040103 - 041124 2/ 15/ 2 0/ 4/ 0 23 7501 ML0616 040106 - 041126 65/ 67/ 19 93/153/ 14 411 7604 BREF 041017 - 041021 0/ 1/ 0 0/ 2/ 0 3 7806 METLAS 040720 - 041127 0/ 15/ 0 0/ 10/ 0 25 7810 ZIMLAT 040507 - 041128 219/144/ 29 151/104/ 19 666 7811 POLLAS 040105 - 041124 0/124/ 0 0/ 76/ 0 200 7823 FTLR** 040612 - 040626 0/ 9/ 0 1/ 1/ 1 12 7824 SPNLAS 040109 - 041124 0/148/ 0 0/117/ 1 266 7825 STL3 040807 - 041129 44/ 69/ 9 61/ 38/ 7 228 7832 SALRO 040102 - 041130 160/335/ 32 224/330/ 42 1123 7835 GRASSE 040301 - 041125 1/ 81/ 3 0/ 45/ 2 132 7836 GFZLAS 040105 - 040701 0/ 38/ 0 0/ 21/ 1 60 7837 CHILAS 040102 - 041129 0/104/ 0 0/132/ 1 237 7838 SHOLAS 040105 - 041129 47/235/ 5 86/205/ 11 589 7839 AUSLAS 040107 - 041127 156/228/ 36 96/171/ 22 709 7840 RGOLAS 040102 - 041129 143/233/ 41 119/134/ 20 690 7841 GFZLA3 040112 - 041125 26/104/ 16 16/ 74/ 10 246 7845 GRASLL 040318 - 040920 13/ 27/ 0 11/ 14/ 1 66 7941 MLROnn 040111 - 041129 122/153/ 24 120/112/ 9 540 8834 WLRS01 040108 - 041130 251/221/ 47 194/177/ 23 913 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 041123.0 204.4 +/- 0.1 311.0 +/- 0.1 -32540.00 +/- 0.01 041124.0 203.3 +/- 0.1 308.8 +/- 0.1 -32541.11 +/- 0.02 041125.0 202.0 +/- 0.1 306.9 +/- 0.1 -32542.09 +/- 0.03 041126.0 201.1 +/- 0.1 304.3 +/- 0.1 -32542.83 +/- 0.03 041127.0 200.0 +/- 0.1 302.4 +/- 0.1 -32543.44 +/- 0.04 041128.0 199.7 +/- 0.1 300.2 +/- 0.1 -32543.81 +/- 0.04 041129.0 199.7 +/- 0.1 297.8 +/- 0.1 -32544.12 +/- 0.04 -------------------------------------------------------------- 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 ******************************************************************************** |