| Date: | 2006-04-20 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 7014: Delft QL Report April 20, 2006 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2006-04-20 13:15:00 UTC Message No. 7014 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report April 20, 2006 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS April 20, 2006 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 Thu, Apr 20, 2006. 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 Thu, Apr 20, 2006. 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 ------------------------------------------------------------------------------ 1873 Simeiz, Crimea, Ukraine 060418 - 060419 2 - 1884 Riga, Latvia 060419 - 060420 1 1 6810 Zimmerwald 846, Switzerland 060419 - 060420 2 2 7090 Yarragadee, Australia 060418 - 060419 5 2 7105 Greenbelt, Maryland 060418 - 060419 2 4 7110 Monument Peak, California 060418 - 060419 4 2 7249 Beijing, China 060419 - 060419 1 - 7406 San Juan, Argentina 060418 - 060420 3 4 7810 Zimmerwald 423, Switzerland 060419 - 060420 2 2 7824 San Fernando, Spain 060419 - 060419 1 - 7825 Mount Stromlo, Australia 060418 - 060419 9 7 7832 Riyad, Saudi Arabia 060418 - 060419 3 3 7839 Graz, Austria 060413 - 060414 2 1 7840 Herstmonceux, United Kingdom 060418 - 060419 4 2 7841 Potsdam, Germany 060419 - 060419 1 - 7941 Matera, Italy (MLRO 532) 060418 - 060420 6 - 8834 Wettzell, Germany 060418 - 060420 2 2 ------ ------ --- --- TOTAL 060413 - 060420 50 32 ------------------------------------------------------------------------------ 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 Wed, Apr 12, 2006 to Thu, Apr 20, 2006. 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 20 Number of Passes 148/147 114/113 Number of Normal Points 1635/1618 1615/1605 Weighted RMS of Fit (mm) 13 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 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 18 Apr 06 18:05 LAG1 12 0 88 41 +- 176 -11 +- 78 71 1873 19 Apr 06 20:27 LAG1 12 0 100 75 +- 173 -10 +- 190 65 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 19 Apr 06 20:34 LAG1 12 0 32 28 +- 88 -8 +- 89 8 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 14 Apr 06 10:31 LAG1 2 0 21 -255 +-9999 95 +-6502 0 6810 14 Apr 06 12:02 LAG2 18 0 25 14 +- 43 -8 +- 22 4 6810 14 Apr 06 13:13 LAG1 22 0 45 -20 +- 39 20 +- 21 2 6810 14 Apr 06 16:45 LAG1 19 0 13 -9 +- 42 6 +- 26 3 6810 17 Apr 06 06:15 LAG2 26 0 18 10 +- 35 9 +- 22 4 6810 17 Apr 06 09:05 LAG1 13 0 22 5 +- 77 12 +- 39 8 6810 17 Apr 06 10:41 LAG2 5 0 23 32 +- 168 15 +- 232 2 6810 17 Apr 06 12:49 LAG1 6 0 17 -36 +- 211 -17 +- 133 8 6810 19 Apr 06 09:53 LAG1 11 0 9 30 +- 252 14 +- 105 2 6810 19 Apr 06 17:01 LAG1 18 0 8 7 +- 48 0 +- 27 3 Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm) 7080 12 Apr 06 15:21 LAG2 7 0 6 3 +- 53 -3 +- 74 1 7080 13 Apr 06 13:17 LAG2 6 0 6 -1 +- 100 -7 +- 93 1 7080 13 Apr 06 15:23 LAG1 1 0 6 0 +- 0 0 +- 0 0 7080 14 Apr 06 15:51 LAG2 9 0 14 3 +- 48 -17 +- 50 2 7080 16 Apr 06 11:39 LAG2 13 0 17 21 +- 23 -13 +- 19 6 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 12 Apr 06 02:19 LAG1 12 0 10 0 +- 12 6 +- 7 2 7090 12 Apr 06 21:49 LAG1 3 0 34 -37 +- 115 3 +- 148 0 7090 13 Apr 06 07:51 LAG2 8 0 16 -26 +- 118 18 +- 51 2 7090 13 Apr 06 11:33 LAG2 18 0 6 -1 +- 12 -2 +- 9 4 7090 13 Apr 06 13:19 LAG1 10 0 6 -17 +- 41 -10 +- 23 1 7090 13 Apr 06 15:43 LAG2 24 0 10 6 +- 8 3 +- 5 2 7090 13 Apr 06 17:03 LAG1 7 0 8 0 +- 18 -10 +- 25 2 7090 13 Apr 06 19:45 LAG2 16 0 15 11 +- 12 -6 +- 11 2 7090 13 Apr 06 23:37 LAG1 12 0 8 -5 +- 12 -4 +- 11 3 7090 14 Apr 06 03:05 LAG1 16 0 17 -19 +- 11 8 +- 7 2 7090 14 Apr 06 09:19 LAG2 29 0 12 0 +- 7 -6 +- 4 1 7090 14 Apr 06 12:11 LAG1 10 0 16 14 +- 14 7 +- 23 1 7090 14 Apr 06 13:43 LAG2 25 0 2 -1 +- 8 -1 +- 6 1 7090 14 Apr 06 15:25 LAG1 23 0 14 -6 +- 8 6 +- 4 3 7090 14 Apr 06 17:49 LAG2 24 0 11 4 +- 8 -5 +- 4 3 7090 14 Apr 06 19:07 LAG1 10 0 7 7 +- 14 -2 +- 19 1 7090 15 Apr 06 07:55 LAG2 10 0 24 -18 +- 40 23 +- 22 1 7090 15 Apr 06 12:01 LAG2 11 0 13 -16 +- 29 19 +- 21 2 7090 15 Apr 06 14:07 LAG1 16 0 15 -8 +- 11 -8 +- 6 5 7090 15 Apr 06 16:03 LAG2 9 0 10 9 +- 14 4 +- 9 1 7090 16 Apr 06 09:35 LAG2 27 0 16 0 +- 8 -9 +- 4 2 7090 16 Apr 06 12:51 LAG1 19 0 14 2 +- 9 10 +- 7 3 7090 16 Apr 06 14:19 LAG2 11 0 7 -5 +- 23 -1 +- 17 1 7090 16 Apr 06 16:19 LAG1 20 0 12 -4 +- 9 6 +- 5 4 7090 16 Apr 06 18:03 LAG2 24 0 8 -3 +- 8 -4 +- 5 1 7090 16 Apr 06 19:49 LAG1 11 0 4 3 +- 12 -4 +- 18 2 7090 16 Apr 06 23:01 LAG1 10 0 12 -9 +- 16 4 +- 16 1 7090 17 Apr 06 02:21 LAG1 12 0 16 -9 +- 12 5 +- 6 3 7090 17 Apr 06 07:49 LAG2 21 0 18 -3 +- 10 11 +- 5 1 7090 17 Apr 06 11:55 LAG2 18 0 7 4 +- 10 5 +- 10 4 7090 17 Apr 06 15:01 LAG1 15 0 20 -17 +- 10 -5 +- 6 2 7090 17 Apr 06 16:07 LAG2 24 0 5 -3 +- 8 0 +- 4 3 7090 17 Apr 06 18:33 LAG1 8 0 23 22 +- 14 -7 +- 19 1 7090 17 Apr 06 20:21 LAG2 8 0 16 14 +- 15 -16 +- 17 1 7090 17 Apr 06 21:48 LAG1 10 0 2 2 +- 13 0 +- 18 1 7090 18 Apr 06 01:07 LAG1 14 0 10 -9 +- 11 0 +- 6 2 7090 18 Apr 06 06:00 LAG2 11 0 5 2 +- 13 2 +- 11 3 7090 18 Apr 06 09:49 LAG2 28 0 14 4 +- 7 -8 +- 4 3 7090 18 Apr 06 13:31 LAG1 19 0 13 -12 +- 10 -2 +- 5 5 7090 18 Apr 06 14:22 LAG2 16 0 11 -5 +- 12 -5 +- 8 1 7090 18 Apr 06 17:11 LAG1 15 0 9 7 +- 10 -4 +- 8 1 7090 18 Apr 06 20:39 LAG1 8 0 7 -7 +- 22 3 +- 30 5 7090 18 Apr 06 23:45 LAG1 16 0 11 -11 +- 10 2 +- 5 1 7090 19 Apr 06 03:23 LAG1 11 0 12 -12 +- 13 4 +- 16 3 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 12 Apr 06 07:47 LAG2 5 0 7 -5 +- 128 9 +- 87 0 7105 18 Apr 06 07:53 LAG2 20 0 5 0 +- 9 -3 +- 7 1 7105 18 Apr 06 12:07 LAG2 16 0 14 4 +- 10 -13 +- 10 1 7105 18 Apr 06 15:35 LAG1 9 0 4 3 +- 18 -2 +- 19 3 7105 18 Apr 06 16:23 LAG2 5 0 5 -14 +- 49 -15 +- 55 1 7105 19 Apr 06 05:35 LAG1 3 0 18 -16 +- 155 -3 +- 266 1 7105 19 Apr 06 06:03 LAG2 13 0 16 11 +- 11 7 +- 10 4 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 12 Apr 06 01:06 LAG1 7 0 6 -4 +- 30 -2 +- 31 2 7110 12 Apr 06 04:17 LAG1 8 0 10 0 +- 18 8 +- 13 1 7110 12 Apr 06 07:57 LAG1 11 0 14 -13 +- 13 -2 +- 20 3 7110 12 Apr 06 15:15 LAG2 13 0 8 9 +- 15 -4 +- 11 5 7110 12 Apr 06 16:45 LAG1 10 0 9 -7 +- 13 0 +- 8 4 7110 12 Apr 06 20:19 LAG1 13 0 13 6 +- 11 -10 +- 9 2 7110 12 Apr 06 23:29 LAG2 3 0 20 6 +- 222 22 +- 187 5 7110 12 Apr 06 23:47 LAG1 3 0 41 -38 +- 37 11 +- 151 5 7110 13 Apr 06 02:57 LAG1 11 0 13 10 +- 12 -4 +- 7 2 7110 13 Apr 06 06:26 LAG1 17 0 8 8 +- 11 -3 +- 6 2 7110 13 Apr 06 09:27 LAG2 9 0 5 -5 +- 28 10 +- 31 1 7110 13 Apr 06 13:15 LAG2 18 0 11 8 +- 11 -9 +- 8 2 7110 13 Apr 06 17:23 LAG2 12 0 15 -6 +- 13 -12 +- 10 6 7110 13 Apr 06 19:03 LAG1 8 0 4 0 +- 18 0 +- 10 4 7110 14 Apr 06 11:19 LAG2 5 0 22 -1 +- 72 -22 +- 67 3 7110 14 Apr 06 15:21 LAG2 16 0 22 11 +- 10 -17 +- 9 6 7110 16 Apr 06 18:45 LAG1 8 0 7 41 +- 96 -16 +- 38 3 7110 16 Apr 06 19:55 LAG2 15 0 13 -11 +- 11 0 +- 6 6 7110 16 Apr 06 21:49 LAG1 12 0 4 0 +- 12 0 +- 12 4 7110 17 Apr 06 01:05 LAG1 15 0 8 -6 +- 10 1 +- 9 5 7110 17 Apr 06 04:31 LAG1 5 0 13 16 +- 85 1 +- 52 2 7110 17 Apr 06 22:25 LAG2 4 0 5 8 +- 136 -8 +- 99 3 7110 18 Apr 06 00:09 LAG1 2 0 17 -56 +- 304 38 +- 295 0 7110 18 Apr 06 03:03 LAG1 13 0 11 4 +- 11 -4 +- 5 4 7110 18 Apr 06 06:37 LAG1 19 0 7 4 +- 9 -3 +- 7 1 7110 18 Apr 06 12:07 LAG2 11 0 13 31 +- 59 -21 +- 30 2 7110 18 Apr 06 15:59 LAG2 11 0 23 16 +- 14 -14 +- 20 1 7110 18 Apr 06 19:07 LAG1 11 0 9 0 +- 13 -4 +- 6 2 7110 18 Apr 06 22:47 LAG1 3 0 18 -20 +- 63 2 +- 128 0 7110 19 Apr 06 01:57 LAG1 8 0 7 -1 +- 18 -1 +- 13 6 7110 19 Apr 06 05:15 LAG1 21 0 7 0 +- 9 -3 +- 5 2 Station 7124 (Papeete) (position fixed, acc. 10 mm) 7124 12 Apr 06 06:06 LAG2 10 0 2 -2 +- 22 4 +- 32 1 7124 12 Apr 06 07:21 LAG1 16 0 16 13 +- 10 3 +- 5 5 7124 12 Apr 06 10:17 LAG2 14 0 15 12 +- 11 10 +- 9 3 7124 12 Apr 06 10:59 LAG1 7 0 14 -16 +- 22 -5 +- 27 4 Station 7249 (Beijing) (position solved, acc. 50 mm) 7249 19 Apr 06 12:51 LAG1 13 0 10 0 +- 46 0 +- 26 10 Station 7308 (Tokyo) (position fixed, acc. 50 mm) 7308 17 Apr 06 03:46 LAG2 5 0 57 -90 +- 482 78 +- 258 5 7308 17 Apr 06 12:16 LAG1 7 0 6 0 +- 154 2 +- 97 4 Station 7358 (Tanegashima) (position solved, acc. 10 mm) 7358 16 Apr 06 18:49 LAG2 21 0 0 0 +- 9 0 +- 6 0 Station 7406 (San Juan) (position solved, acc. 100 mm) 7406 12 Apr 06 02:25 LAG2 18 0 22 19 +- 70 -8 +- 57 2 7406 12 Apr 06 03:21 LAG1 9 0 14 -26 +- 283 -6 +- 131 2 7406 12 Apr 06 06:29 LAG2 13 0 11 -5 +- 184 2 +- 114 4 7406 12 Apr 06 06:55 LAG1 14 0 68 60 +- 81 42 +- 79 2 7406 13 Apr 06 00:21 LAG2 17 0 29 33 +- 86 16 +- 75 7 7406 17 Apr 06 00:17 LAG1 9 0 40 -40 +- 102 5 +- 204 4 7406 17 Apr 06 00:49 LAG2 20 0 58 39 +- 69 40 +- 50 4 7406 17 Apr 06 05:18 LAG2 5 0 96 -2 +- 256 136 +- 368 2 7406 17 Apr 06 07:17 LAG1 5 0 97 -38 +- 137 219 +- 366 8 7406 17 Apr 06 22:57 LAG2 16 0 20 20 +- 77 0 +- 55 1 7406 18 Apr 06 02:13 LAG1 15 0 16 -24 +- 116 -10 +- 69 3 7406 18 Apr 06 03:03 LAG2 15 0 18 -4 +- 144 8 +- 91 5 7406 18 Apr 06 05:43 LAG1 15 0 11 -6 +- 85 -6 +- 57 6 7406 18 Apr 06 07:07 LAG2 26 0 33 -2 +- 59 23 +- 42 5 7406 18 Apr 06 09:13 LAG1 11 0 62 -23 +- 93 81 +- 119 3 7406 19 Apr 06 00:53 LAG1 4 0 10 -105 +-2078 -53 +-1136 0 7406 19 Apr 06 01:25 LAG2 10 0 25 19 +- 112 14 +- 161 1 7406 19 Apr 06 04:23 LAG1 16 0 49 -2 +- 75 26 +- 41 7 7406 19 Apr 06 05:21 LAG2 15 0 60 -27 +- 77 41 +- 62 8 7406 19 Apr 06 23:09 LAG2 15 0 19 9 +- 91 -10 +- 85 3 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 12 Apr 06 22:43 LAG1 5 0 12 28 +- 221 -16 +- 91 1 7501 13 Apr 06 15:11 LAG2 3 0 2 -7 +- 92 13 +- 164 2 7501 13 Apr 06 19:27 LAG2 11 0 32 18 +- 25 14 +- 25 2 7501 14 Apr 06 22:57 LAG1 16 0 4 3 +- 10 -1 +- 7 1 7501 15 Apr 06 01:26 LAG2 17 0 23 -9 +- 11 17 +- 11 2 7501 17 Apr 06 19:17 LAG1 4 0 3 0 +- 63 1 +- 43 0 7501 17 Apr 06 19:37 LAG2 21 0 21 20 +- 9 12 +- 8 2 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 14 Apr 06 10:31 LAG1 1 0 45 0 +- 0 0 +- 0 0 7810 14 Apr 06 12:03 LAG2 15 0 34 22 +- 54 -8 +- 29 3 7810 14 Apr 06 13:13 LAG1 22 0 40 -12 +- 39 20 +- 21 1 7810 14 Apr 06 16:45 LAG1 19 0 12 -2 +- 42 7 +- 26 2 7810 17 Apr 06 06:17 LAG2 26 0 25 21 +- 35 7 +- 22 4 7810 17 Apr 06 09:07 LAG1 11 0 14 32 +- 140 19 +- 76 2 7810 17 Apr 06 10:41 LAG2 5 0 29 33 +- 167 6 +- 231 1 7810 17 Apr 06 12:49 LAG1 5 0 5 13 +- 400 5 +- 232 1 7810 19 Apr 06 09:59 LAG1 4 0 7 79 +-1557 28 +- 615 1 7810 19 Apr 06 17:01 LAG1 17 0 20 20 +- 48 0 +- 29 3 Station 7821 (Shanghai Observatory) (position solved, acc. 50 mm) 7821 17 Apr 06 12:17 LAG1 7 0 4 0 +- 121 0 +- 93 4 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 12 Apr 06 00:25 LAG1 7 0 52 48 +- 81 -7 +- 114 2 7824 12 Apr 06 23:19 LAG1 2 0 51 70 +-1245 -15 +-1048 0 7824 13 Apr 06 01:48 LAG2 1 0 16 0 +- 0 0 +- 0 0 7824 17 Apr 06 19:50 LAG1 1 0 48 0 +- 0 0 +- 0 0 7824 19 Apr 06 20:29 LAG1 16 0 40 40 +- 31 -1 +- 20 6 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 12 Apr 06 05:35 LAG2 15 0 8 4 +- 11 3 +- 9 3 7825 12 Apr 06 09:27 LAG2 26 0 10 -4 +- 8 -5 +- 5 2 7825 12 Apr 06 10:59 LAG1 19 0 19 -19 +- 9 0 +- 6 2 7825 12 Apr 06 13:39 LAG2 23 0 14 -10 +- 8 -6 +- 5 2 7825 12 Apr 06 14:33 LAG1 9 0 8 6 +- 14 -1 +- 6 4 7825 13 Apr 06 07:29 LAG2 21 0 13 12 +- 9 1 +- 5 5 7825 13 Apr 06 19:57 LAG1 17 0 11 4 +- 10 -8 +- 7 3 7825 13 Apr 06 23:33 LAG1 7 0 6 3 +- 16 2 +- 13 3 7825 14 Apr 06 18:44 LAG1 8 0 8 -5 +- 15 -4 +- 16 4 7825 14 Apr 06 22:07 LAG1 15 0 2 0 +- 12 0 +- 7 2 7825 15 Apr 06 03:53 LAG2 11 0 9 1 +- 15 9 +- 17 5 7825 15 Apr 06 10:31 LAG1 16 0 10 -6 +- 10 -6 +- 10 1 7825 15 Apr 06 12:03 LAG2 19 0 19 -7 +- 9 13 +- 7 4 7825 15 Apr 06 16:07 LAG2 23 0 5 2 +- 8 1 +- 6 4 7825 15 Apr 06 17:31 LAG1 10 0 20 15 +- 14 -17 +- 13 7 7825 15 Apr 06 20:43 LAG1 19 0 19 11 +- 9 -11 +- 6 3 7825 16 Apr 06 05:53 LAG2 16 0 5 1 +- 10 2 +- 7 4 7825 16 Apr 06 09:57 LAG2 19 0 25 7 +- 9 -14 +- 6 4 7825 16 Apr 06 12:35 LAG1 19 0 29 -14 +- 9 14 +- 5 7 7825 16 Apr 06 14:09 LAG2 24 0 5 -4 +- 8 0 +- 5 3 7825 16 Apr 06 16:19 LAG1 8 0 8 -8 +- 18 9 +- 19 3 7825 16 Apr 06 22:54 LAG1 9 0 6 4 +- 14 0 +- 8 4 7825 17 Apr 06 03:59 LAG2 22 0 15 8 +- 8 8 +- 6 3 7825 17 Apr 06 08:01 LAG2 25 0 6 -3 +- 8 2 +- 5 3 7825 17 Apr 06 11:17 LAG1 17 0 13 -6 +- 10 7 +- 6 3 7825 17 Apr 06 12:20 LAG2 22 0 12 -2 +- 9 8 +- 6 3 7825 17 Apr 06 14:49 LAG1 7 0 6 -3 +- 16 -1 +- 11 4 7825 17 Apr 06 16:22 LAG2 8 0 3 1 +- 14 2 +- 19 2 7825 18 Apr 06 01:00 LAG1 12 1 14 10 +- 12 3 +- 12 7 7825 18 Apr 06 06:29 LAG2 9 0 12 16 +- 40 -3 +- 24 3 7825 18 Apr 06 09:57 LAG1 13 0 10 3 +- 11 -9 +- 15 6 7825 18 Apr 06 10:27 LAG2 15 0 15 5 +- 12 -14 +- 11 4 7825 18 Apr 06 13:29 LAG1 20 0 15 -14 +- 9 2 +- 5 5 7825 18 Apr 06 14:29 LAG2 19 0 7 -1 +- 9 -4 +- 6 3 7825 18 Apr 06 16:55 LAG1 14 0 4 0 +- 11 0 +- 10 4 7825 18 Apr 06 20:07 LAG1 17 0 5 -4 +- 10 0 +- 6 2 7825 19 Apr 06 04:10 LAG2 21 0 9 8 +- 9 2 +- 6 2 7825 19 Apr 06 08:11 LAG2 27 0 3 0 +- 8 0 +- 5 2 7825 19 Apr 06 11:58 LAG1 10 0 6 -4 +- 37 -1 +- 19 6 7825 19 Apr 06 12:35 LAG2 17 0 8 -1 +- 12 5 +- 7 2 7825 19 Apr 06 15:35 LAG1 16 0 9 -4 +- 10 1 +- 8 7 7825 19 Apr 06 16:33 LAG2 19 0 9 6 +- 9 5 +- 8 3 7825 19 Apr 06 18:55 LAG1 13 0 16 14 +- 11 -1 +- 12 6 7825 19 Apr 06 22:31 LAG1 2 0 20 21 +- 31 -76 +- 270 0 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 12 Apr 06 04:05 LAG2 10 0 11 7 +- 22 7 +- 35 4 7832 12 Apr 06 08:31 LAG2 4 0 16 -16 +- 54 -1 +- 144 3 7832 12 Apr 06 15:41 LAG1 11 0 7 -2 +- 20 6 +- 22 2 7832 13 Apr 06 07:45 LAG1 14 0 11 0 +- 18 5 +- 9 3 7832 13 Apr 06 17:45 LAG1 8 0 10 -7 +- 23 -4 +- 12 4 7832 14 Apr 06 19:59 LAG1 11 0 9 5 +- 19 -6 +- 22 4 7832 14 Apr 06 22:23 LAG2 9 0 5 0 +- 34 -8 +- 46 1 7832 15 Apr 06 02:13 LAG2 14 0 13 -4 +- 17 13 +- 20 2 7832 15 Apr 06 06:53 LAG2 9 0 9 -17 +- 52 19 +- 51 3 7832 15 Apr 06 08:51 LAG1 7 0 18 -19 +- 98 18 +- 52 4 7832 15 Apr 06 15:29 LAG1 3 0 12 21 +- 435 -6 +- 307 4 7832 15 Apr 06 18:31 LAG1 8 0 20 -9 +- 24 -6 +- 10 5 7832 16 Apr 06 00:19 LAG2 6 0 6 -4 +- 68 -7 +- 69 5 7832 16 Apr 06 04:33 LAG2 11 0 9 9 +- 20 1 +- 38 3 7832 16 Apr 06 07:22 LAG1 2 0 5 3 +- 52 3 +- 78 0 7832 18 Apr 06 04:54 LAG2 9 0 18 13 +- 22 19 +- 50 6 7832 18 Apr 06 18:05 LAG1 9 0 17 -13 +- 25 -1 +- 12 8 7832 18 Apr 06 22:45 LAG2 9 0 9 -4 +- 23 -7 +- 38 5 7832 19 Apr 06 02:46 LAG2 10 0 22 11 +- 21 17 +- 22 3 7832 19 Apr 06 06:41 LAG1 9 0 4 -1 +- 22 -2 +- 21 3 7832 19 Apr 06 07:31 LAG2 7 2 29 27 +- 183 1 +- 132 6 7832 19 Apr 06 16:39 LAG1 13 0 15 -14 +- 18 2 +- 14 4 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 13 Apr 06 13:53 LAG1 20 0 17 11 +- 21 7 +- 15 6 7838 16 Apr 06 13:16 LAG1 20 0 61 23 +- 21 37 +- 13 4 7838 16 Apr 06 18:45 LAG2 25 0 53 51 +- 19 4 +- 10 6 7838 17 Apr 06 02:19 LAG1 4 0 31 116 +- 823 -32 +- 316 2 7838 17 Apr 06 03:48 LAG2 5 0 63 -7 +- 358 34 +- 175 3 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 13 Apr 06 10:19 LAG2 2 0 8 -18 +- 488 -44 +- 793 0 7839 13 Apr 06 11:18 LAG1 3 0 3 0 +- 24 3 +- 20 0 7839 14 Apr 06 20:07 LAG1 12 0 10 0 +- 12 -5 +- 6 1 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 12 Apr 06 03:45 LAG2 20 0 16 -7 +- 14 12 +- 11 2 7840 12 Apr 06 07:45 LAG2 19 0 13 9 +- 15 4 +- 9 4 7840 12 Apr 06 09:07 LAG1 5 0 12 -6 +- 49 10 +- 87 2 7840 12 Apr 06 16:03 LAG1 9 0 15 14 +- 22 3 +- 14 4 7840 12 Apr 06 19:39 LAG1 9 0 18 -5 +- 28 -9 +- 19 3 7840 17 Apr 06 19:41 LAG1 19 0 12 1 +- 15 -6 +- 8 1 7840 17 Apr 06 23:23 LAG1 15 0 8 5 +- 17 -5 +- 18 3 7840 18 Apr 06 04:23 LAG2 20 0 13 -2 +- 14 9 +- 10 2 7840 18 Apr 06 08:31 LAG2 15 0 19 17 +- 17 -4 +- 13 2 7840 18 Apr 06 11:31 LAG1 9 0 12 9 +- 22 -4 +- 14 2 7840 18 Apr 06 12:37 LAG2 9 0 21 7 +- 36 -13 +- 35 2 7840 18 Apr 06 14:59 LAG1 11 0 4 -3 +- 20 0 +- 12 2 7840 18 Apr 06 18:21 LAG1 13 0 8 2 +- 18 -5 +- 11 2 7840 19 Apr 06 20:35 LAG1 15 0 4 -4 +- 18 1 +- 10 2 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 14 Apr 06 04:03 LAG2 16 0 10 -5 +- 11 4 +- 9 2 7841 14 Apr 06 20:11 LAG1 17 0 10 9 +- 10 0 +- 5 2 7841 17 Apr 06 20:03 LAG1 10 0 8 3 +- 56 -4 +- 24 4 7841 19 Apr 06 20:39 LAG1 8 0 21 8 +- 14 22 +- 20 10 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 13 Apr 06 18:23 LAG1 8 0 7 19 +- 72 -6 +- 31 2 7941 13 Apr 06 21:51 LAG1 10 0 6 -9 +- 40 1 +- 23 1 7941 14 Apr 06 00:10 LAG2 10 0 12 8 +- 13 10 +- 22 2 7941 14 Apr 06 12:11 LAG2 5 0 32 -29 +- 249 -27 +- 112 2 7941 14 Apr 06 13:23 LAG1 11 0 32 -23 +- 13 18 +- 13 3 7941 14 Apr 06 16:51 LAG1 12 0 7 -2 +- 16 6 +- 12 1 7941 14 Apr 06 20:07 LAG1 8 0 7 3 +- 15 -3 +- 6 2 7941 15 Apr 06 02:01 LAG2 14 0 16 18 +- 19 20 +- 14 1 7941 18 Apr 06 11:23 LAG1 11 0 4 0 +- 24 2 +- 14 2 7941 18 Apr 06 14:53 LAG1 8 0 5 2 +- 23 7 +- 24 2 7941 19 Apr 06 13:31 LAG1 6 0 21 -26 +- 71 -3 +- 44 5 7941 19 Apr 06 16:49 LAG1 21 0 10 7 +- 9 3 +- 5 3 7941 19 Apr 06 20:35 LAG1 14 0 3 -3 +- 18 2 +- 10 1 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 15 Apr 06 06:05 LAG2 11 0 28 2 +- 39 17 +- 23 4 8834 15 Apr 06 08:19 LAG1 2 0 7 -71 +-1632 -28 +- 746 0 8834 18 Apr 06 11:33 LAG1 3 0 425 -18 +- 111 393 +- 107 0*CHK* 8834 19 Apr 06 06:59 LAG2 4 1 247 -34 +- 75 457 +- 122 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 -------------------------------------------------------------------------- 1864 MD2LAS 060104 - 060410 0/ 35/ 0 0/ 13/ 0 48 1873 SIMLAS 060328 - 060419 0/ 7/ 0 0/ 1/ 0 8 1884 RIGLAS 060112 - 060420 0/ 29/ 0 0/ 7/ 0 36 1893 CRMLAS 060113 - 060402 0/ 8/ 0 0/ 0/ 0 8 6405 TIGO 060103 - 060309 20/ 44/ 1 14/ 47/ 9 135 6810 ZIMLAT 060103 - 060420 72/ 77/ 7 67/ 44/ 7 274 7080 MLRS25 060102 - 060416 1/ 45/ 1 4/ 29/ 1 81 7090 ML0514 060101 - 060419 141/157/ 11 78/168/ 17 572 7105 ML0725 060106 - 060419 8/ 63/ 2 10/ 22/ 2 107 7110 ML0414 060103 - 060419 37/ 59/ 5 42/ 28/ 6 177 7124 ML0819 060225 - 060412 0/ 26/ 0 0/ 14/ 0 40 7130 TL04** 060125 - 060316 9/ 9/ 0 3/ 4/ 2 27 7237 CHALAS 060101 - 060405 0/ 94/ 0 0/ 44/ 0 138 7249 BEJLAS 060104 - 060419 0/ 50/ 0 0/ 14/ 0 64 7308 CRLLAS 060110 - 060417 4/ 14/ 0 5/ 12/ 0 35 7358 GMSL 060111 - 060416 1/ 10/ 0 1/ 7/ 0 19 7405 TIGO 060103 - 060302 0/ 9/ 0 0/ 5/ 0 14 7406 060223 - 060420 0/ 86/ 0 0/ 94/ 0 180 7501 ML0616 060117 - 060417 12/ 37/ 0 5/ 44/ 3 101 7810 ZIMLAT 060103 - 060420 72/ 80/ 7 65/ 45/ 6 275 7811 POLLAS 060109 - 060409 0/ 27/ 0 0/ 5/ 0 32 7821 CHILAS 060106 - 060417 0/ 14/ 0 0/ 7/ 0 21 7824 SPNLAS 060109 - 060419 0/ 58/ 0 0/ 20/ 1 79 7825 STL3 060102 - 060419 87/ 93/ 9 65/127/ 10 391 7832 SALRO 060103 - 060419 46/ 85/ 3 67/ 49/ 6 256 7838 SHOLAS 060105 - 060417 27/ 68/ 0 32/ 30/ 4 161 7839 AUSLAS 060109 - 060414 55/ 61/ 4 56/ 26/ 4 206 7840 RGOLAS 060104 - 060419 55/ 70/ 8 56/ 23/ 6 218 7841 GFZLA3 060107 - 060419 10/ 48/ 3 12/ 21/ 6 100 7941 MLROnn 060125 - 060420 38/ 49/ 2 35/ 25/ 6 155 8834 WLRS01 060105 - 060420 50/ 47/ 3 48/ 31/ 9 188 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 060413.0 103.5 +/- 0.1 368.0 +/- 0.1 272.54 +/- 0.01 060414.0 103.7 +/- 0.1 367.7 +/- 0.1 271.52 +/- 0.02 060415.0 101.9 +/- 0.1 367.9 +/- 0.1 270.56 +/- 0.03 060416.0 101.9 +/- 0.2 367.1 +/- 0.2 269.88 +/- 0.03 060417.0 100.9 +/- 0.1 366.8 +/- 0.1 269.37 +/- 0.04 060418.0 102.2 +/- 0.1 366.6 +/- 0.1 269.07 +/- 0.04 060419.0 102.0 +/- 0.1 365.9 +/- 0.1 268.79 +/- 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 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 ******************************************************************************** |