| Date: | 2006-05-01 13:15:00 | |
| Sender: | Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>> | |
| Subject: | [SLR-Report] No. 7054: Delft QL Report May 01, 2006 | |
| Author: | Ron Noomen | |
| Content: | ******************************************************************************** SLR Electronic Report 2006-05-01 13:15:00 UTC Message No. 7054 ******************************************************************************** Author: Ron Noomen Subject: Delft QL Report May 01, 2006 WEGENER-2 IERS REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER DELFT UNIVERSITY OF TECHNOLOGY FACULTY OF AEROSPACE ENGINEERING THE NETHERLANDS May 1, 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 Mon, May 1, 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 Mon, May 1, 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 ------------------------------------------------------------------------------ 6810 Zimmerwald 846, Switzerland 060429 - 060501 4 5 7406 San Juan, Argentina 060430 - 060501 1 2 7810 Zimmerwald 423, Switzerland 060429 - 060501 4 4 7824 San Fernando, Spain 060430 - 060430 1 - 7825 Mount Stromlo, Australia 060430 - 060430 1 2 7832 Riyad, Saudi Arabia 060429 - 060430 2 2 8834 Wettzell, Germany 060430 - 060501 1 4 ------ ------ --- --- TOTAL 060429 - 060501 14 19 ------------------------------------------------------------------------------ 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 Sun, Apr 23, 2006 to Mon, May 1, 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 21 18 Number of Passes 139/139 125/122 Number of Normal Points 1503/1491 1495/1482 Weighted RMS of Fit (mm) 16 15 ----------------------------------------------------------------------- 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 25 Apr 06 15:27 LAG1 9 0 38 1 +- 512 20 +- 282 15 1864 26 Apr 06 17:41 LAG1 8 0 90 -96 +- 259 -15 +- 212 24 1864 27 Apr 06 16:19 LAG1 8 0 57 -54 +- 212 2 +- 114 19 Station 1873 (Simeiz) (position fixed, acc. 200 mm) 1873 27 Apr 06 20:21 LAG1 7 0 70 6 +- 653 46 +- 529 31 Station 1884 (Riga) (position fixed, acc. 100 mm) 1884 24 Apr 06 01:21 LAG2 15 0 78 77 +- 77 0 +- 80 8 1884 24 Apr 06 20:51 LAG1 14 0 13 10 +- 80 -9 +- 79 4 Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm) 6810 23 Apr 06 11:07 LAG2 14 0 52 -10 +- 53 -31 +- 30 5 6810 23 Apr 06 11:39 LAG1 13 0 22 17 +- 51 -5 +- 28 5 6810 23 Apr 06 15:03 LAG1 19 0 13 11 +- 41 2 +- 25 6 6810 23 Apr 06 18:24 LAG1 26 0 15 -3 +- 36 -6 +- 17 6 6810 23 Apr 06 21:59 LAG1 14 0 8 -5 +- 48 -3 +- 27 3 6810 24 Apr 06 01:03 LAG2 18 0 11 2 +- 43 8 +- 36 5 6810 24 Apr 06 05:03 LAG2 24 0 5 -2 +- 37 3 +- 24 2 6810 24 Apr 06 09:09 LAG2 12 0 18 11 +- 62 -4 +- 31 5 6810 24 Apr 06 10:11 LAG1 15 0 8 6 +- 51 1 +- 23 6 6810 24 Apr 06 13:25 LAG2 4 0 11 -5 +- 282 -25 +- 440 4 6810 24 Apr 06 13:48 LAG1 13 0 17 14 +- 50 -3 +- 39 6 6810 25 Apr 06 23:01 LAG1 3 0 13 2 +- 989 -9 +- 951 4 6810 29 Apr 06 21:33 LAG1 4 0 32 -31 +-2800 0 +-1090 1 6810 30 Apr 06 01:35 LAG2 27 0 4 2 +- 35 1 +- 21 2 6810 30 Apr 06 05:41 LAG2 24 0 5 -3 +- 40 -3 +- 26 2 6810 30 Apr 06 08:58 LAG1 14 0 52 48 +- 50 11 +- 24 22 6810 30 Apr 06 09:57 LAG2 2 0 24 17 +- 204 -5 +- 134 0 6810 30 Apr 06 12:36 LAG1 9 0 45 -44 +- 62 0 +- 30 4 6810 30 Apr 06 19:27 LAG1 21 0 22 -21 +- 40 2 +- 18 6 Station 7090 (Yarragadee) (position fixed, acc. 10 mm) 7090 23 Apr 06 01:27 LAG1 8 0 19 -4 +- 15 22 +- 18 1 7090 23 Apr 06 08:46 LAG2 5 0 16 -12 +- 36 -2 +- 23 3 7090 23 Apr 06 12:37 LAG2 26 0 5 -2 +- 8 -2 +- 5 1 7090 23 Apr 06 13:45 LAG1 22 0 11 -10 +- 8 0 +- 4 4 7090 23 Apr 06 16:53 LAG2 25 0 11 -8 +- 8 -4 +- 5 2 7090 23 Apr 06 17:41 LAG1 4 0 2 3 +- 92 -3 +- 95 2 7090 23 Apr 06 20:43 LAG1 5 0 12 4 +- 50 -10 +- 68 3 7090 23 Apr 06 23:57 LAG1 16 0 6 -3 +- 10 2 +- 7 2 7090 24 Apr 06 10:43 LAG2 17 0 8 -7 +- 10 0 +- 10 2 7090 24 Apr 06 12:31 LAG1 12 0 5 -3 +- 14 -5 +- 13 1 7090 24 Apr 06 15:03 LAG2 17 0 14 6 +- 10 8 +- 7 2 7090 24 Apr 06 19:11 LAG2 5 0 2 -4 +- 33 -9 +- 81 1 7090 24 Apr 06 19:29 LAG1 11 0 11 8 +- 12 -12 +- 17 2 7090 24 Apr 06 22:53 LAG1 5 0 4 -5 +- 25 1 +- 18 0 7090 25 Apr 06 04:47 LAG2 3 0 27 -22 +- 131 3 +- 111 6 7090 25 Apr 06 21:35 LAG1 2 0 2 1 +- 56 31 +- 534 0 7090 26 Apr 06 00:41 LAG1 19 0 15 -8 +- 9 6 +- 5 4 7090 26 Apr 06 10:51 LAG2 27 0 9 -7 +- 8 1 +- 6 4 7090 26 Apr 06 13:37 LAG1 4 0 28 -23 +- 50 -6 +- 64 0 7090 26 Apr 06 15:07 LAG2 22 0 2 0 +- 8 0 +- 4 2 7090 26 Apr 06 16:47 LAG1 14 0 24 16 +- 11 -15 +- 7 3 7090 26 Apr 06 19:27 LAG2 12 0 23 -15 +- 17 -12 +- 24 2 7090 26 Apr 06 20:25 LAG1 4 0 27 -9 +- 80 -21 +- 96 1 7090 26 Apr 06 23:25 LAG1 16 0 6 -5 +- 10 -2 +- 7 1 7090 27 Apr 06 02:54 LAG1 17 0 33 -25 +- 10 19 +- 7 5 7090 27 Apr 06 04:55 LAG2 13 0 8 -5 +- 14 3 +- 13 1 7090 27 Apr 06 09:05 LAG2 18 0 18 11 +- 11 -16 +- 8 1 7090 27 Apr 06 11:55 LAG1 19 0 14 -13 +- 9 2 +- 8 2 7090 27 Apr 06 13:07 LAG2 25 0 13 0 +- 8 -8 +- 5 2 7090 27 Apr 06 15:29 LAG1 18 0 6 2 +- 9 2 +- 5 1 7090 27 Apr 06 17:17 LAG2 23 0 5 2 +- 8 3 +- 6 1 7090 27 Apr 06 18:57 LAG1 11 0 3 0 +- 12 0 +- 17 3 7090 27 Apr 06 22:03 LAG1 13 0 9 -10 +- 15 -1 +- 12 2 7090 28 Apr 06 01:25 LAG1 17 0 5 -4 +- 11 0 +- 6 3 7090 28 Apr 06 07:15 LAG2 14 0 37 -7 +- 17 28 +- 11 2 Station 7105 (Greenbelt) (position fixed, acc. 10 mm) 7105 23 Apr 06 19:25 LAG1 2 0 7 -47 +- 420 42 +- 437 0 7105 23 Apr 06 22:33 LAG1 6 0 21 -20 +- 17 3 +- 21 5 7105 24 Apr 06 12:53 LAG2 7 0 4 2 +- 32 -2 +- 38 1 7105 25 Apr 06 06:55 LAG2 11 0 9 -8 +- 17 0 +- 13 2 7105 26 Apr 06 09:13 LAG2 8 0 10 20 +- 39 -7 +- 21 3 7105 27 Apr 06 05:13 LAG1 4 0 6 -10 +- 59 11 +- 116 4 7105 27 Apr 06 06:51 LAG2 17 0 12 -5 +- 10 -7 +- 6 2 7105 27 Apr 06 11:05 LAG2 4 0 49 40 +- 176 -6 +- 128 1 7105 27 Apr 06 13:42 LAG1 2 0 20 16 +- 389 24 +- 260 0 7105 27 Apr 06 15:15 LAG2 9 0 10 -26 +- 35 -17 +- 25 1 7105 28 Apr 06 09:23 LAG2 5 0 27 15 +- 39 17 +- 55 2 Station 7110 (Monument Peak) (position fixed, acc. 10 mm) 7110 24 Apr 06 16:52 LAG2 4 0 7 4 +- 36 -8 +- 85 0 7110 24 Apr 06 18:03 LAG1 6 0 24 8 +- 48 -12 +- 35 1 7110 24 Apr 06 21:17 LAG2 4 1 9 -99 +- 332 53 +- 183 5 7110 24 Apr 06 21:31 LAG1 13 0 9 2 +- 11 -7 +- 11 5 7110 25 Apr 06 00:49 LAG1 4 0 15 -6 +- 23 12 +- 25 3 7110 25 Apr 06 10:17 LAG2 10 0 24 11 +- 15 -8 +- 9 7 7110 25 Apr 06 14:45 LAG2 15 0 16 0 +- 11 -16 +- 11 2 7110 25 Apr 06 16:37 LAG1 13 0 9 -8 +- 11 0 +- 6 2 7110 25 Apr 06 19:03 LAG2 4 0 7 4 +- 66 13 +- 84 3 7110 25 Apr 06 23:36 LAG1 8 0 33 -32 +- 15 -2 +- 25 1 7110 26 Apr 06 02:45 LAG1 17 0 16 8 +- 10 6 +- 5 3 7110 28 Apr 06 07:17 LAG1 5 0 9 3 +- 30 24 +- 69 3 Station 7308 (Tokyo) (position fixed, acc. 50 mm) 7308 25 Apr 06 08:09 LAG1 14 0 65 -53 +- 46 14 +- 36 10 7308 28 Apr 06 02:43 LAG2 5 0 16 28 +- 116 40 +- 186 2 Station 7358 (Tanegashima) (position solved, acc. 10 mm) 7358 25 Apr 06 11:45 LAG1 4 0 1 0 +- 64 0 +- 58 1 Station 7406 (San Juan) (position solved, acc. 100 mm) 7406 23 Apr 06 01:37 LAG2 13 0 75 34 +- 91 71 +- 79 10 7406 23 Apr 06 02:35 LAG1 7 0 45 139 +- 361 87 +- 221 3 7406 23 Apr 06 06:11 LAG1 7 0 93 -12 +- 113 173 +- 211 2 7406 23 Apr 06 23:33 LAG2 1 0 150 0 +- 0 0 +- 0 0 7406 24 Apr 06 01:03 LAG1 7 0 106 93 +- 960 -6 +- 454 1 7406 24 Apr 06 04:02 LAG2 6 0 106 1 +- 267 118 +- 296 8 7406 24 Apr 06 04:53 LAG1 6 0 83 15 +- 123 146 +- 215 2 7406 24 Apr 06 08:01 LAG2 3 0 101 1 +-1075 159 +-1654 4 7406 24 Apr 06 08:17 LAG1 2 0 62 42 +- 290 244 +-2803 0 7406 25 Apr 06 00:19 LAG1 2 0 37 -186 +-7527 100 +-5110 0 7406 25 Apr 06 01:49 LAG2 13 0 40 -34 +- 235 4 +- 144 4 7406 25 Apr 06 03:29 LAG1 6 0 105 -31 +- 201 82 +- 211 1 7406 25 Apr 06 05:55 LAG2 21 0 45 4 +- 71 -32 +- 52 3 7406 25 Apr 06 06:47 LAG1 11 0 53 38 +- 90 36 +- 87 2 7406 25 Apr 06 10:01 LAG1 6 0 131 -3 +- 544 84 +- 359 3 7406 26 Apr 06 00:17 LAG2 5 0 47 21 +- 331 37 +- 470 3 7406 26 Apr 06 04:41 LAG2 6 0 90 -76 +-1208 80 +- 582 1 7406 26 Apr 06 05:25 LAG1 16 0 98 29 +- 82 80 +- 61 4 7406 26 Apr 06 08:19 LAG2 8 0 47 21 +- 121 97 +- 359 3 7406 26 Apr 06 09:01 LAG1 3 0 88 40 +- 268 175 +- 865 0 7406 27 Apr 06 00:33 LAG1 18 0 13 -1 +- 71 -8 +- 52 7 7406 27 Apr 06 02:03 LAG2 26 0 55 5 +- 59 34 +- 37 11 7406 27 Apr 06 04:03 LAG1 18 0 19 -16 +- 78 -2 +- 47 11 7406 27 Apr 06 06:09 LAG2 22 0 19 -1 +- 65 13 +- 47 6 7406 27 Apr 06 07:33 LAG1 9 0 91 35 +- 100 95 +- 110 1 7406 28 Apr 06 00:23 LAG2 10 0 39 33 +- 107 11 +- 125 4 7406 29 Apr 06 01:19 LAG1 17 0 51 -40 +- 77 -7 +- 47 23 7406 29 Apr 06 02:31 LAG2 7 0 29 -18 +- 119 -36 +- 165 11 7406 29 Apr 06 04:59 LAG1 11 0 41 -40 +- 91 -5 +- 73 10 7406 29 Apr 06 06:28 LAG2 10 0 47 54 +- 170 9 +- 180 5 7406 30 Apr 06 22:43 LAG2 9 0 146 224 +- 183 -66 +- 111 3 Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm) 7501 23 Apr 06 16:07 LAG2 17 0 10 7 +- 10 5 +- 8 1 7501 23 Apr 06 17:47 LAG1 15 0 14 -14 +- 10 0 +- 10 2 7501 23 Apr 06 20:27 LAG2 18 0 19 6 +- 10 10 +- 6 2 7501 23 Apr 06 21:15 LAG1 15 0 7 2 +- 11 -3 +- 5 2 7501 24 Apr 06 00:39 LAG2 17 0 11 10 +- 13 1 +- 11 1 7501 24 Apr 06 03:59 LAG1 11 0 13 9 +- 12 12 +- 15 3 7501 24 Apr 06 07:21 LAG1 3 0 20 33 +- 172 27 +- 89 5 7501 24 Apr 06 10:17 LAG2 6 0 8 -7 +- 21 2 +- 53 0 7501 24 Apr 06 14:31 LAG2 3 0 15 -14 +- 207 23 +- 166 1 7501 24 Apr 06 18:31 LAG2 20 0 15 14 +- 9 3 +- 9 2 7501 24 Apr 06 19:55 LAG1 21 0 9 1 +- 9 -4 +- 4 2 7501 24 Apr 06 23:17 LAG2 3 0 10 -73 +-1188 35 +- 503 1 7501 24 Apr 06 23:24 LAG1 17 0 25 -22 +- 10 7 +- 9 2 7501 25 Apr 06 16:25 LAG2 17 0 6 0 +- 10 6 +- 10 1 7501 25 Apr 06 18:31 LAG1 12 0 4 -3 +- 16 -3 +- 11 2 7501 25 Apr 06 22:13 LAG1 16 0 6 -7 +- 12 1 +- 7 2 7501 26 Apr 06 04:47 LAG1 11 0 20 15 +- 13 10 +- 14 1 7501 26 Apr 06 08:31 LAG1 2 0 18 23 +- 526 -3 +- 417 0 7501 26 Apr 06 10:33 LAG2 2 0 16 -51 +- 320 -98 +- 876 0 7501 26 Apr 06 19:05 LAG2 9 0 20 9 +- 45 8 +- 33 2 7501 26 Apr 06 20:39 LAG1 8 0 26 10 +- 16 -10 +- 9 3 7501 26 Apr 06 22:55 LAG2 14 0 9 -6 +- 11 5 +- 9 3 7501 27 Apr 06 22:55 LAG1 14 0 7 -1 +- 12 -4 +- 8 3 7501 28 Apr 06 01:05 LAG2 12 0 17 -9 +- 12 23 +- 17 2 7501 28 Apr 06 05:31 LAG1 12 0 20 17 +- 12 5 +- 9 2 Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm) 7810 23 Apr 06 11:07 LAG2 11 0 54 4 +- 150 -30 +- 91 2 7810 23 Apr 06 11:39 LAG1 12 0 33 30 +- 52 -6 +- 28 4 7810 23 Apr 06 15:03 LAG1 19 0 23 21 +- 41 3 +- 25 7 7810 23 Apr 06 18:25 LAG1 24 0 13 8 +- 37 -4 +- 18 5 7810 23 Apr 06 22:05 LAG1 10 0 6 3 +- 59 -3 +- 38 3 7810 24 Apr 06 01:09 LAG2 14 0 18 15 +- 48 8 +- 49 4 7810 24 Apr 06 05:03 LAG2 22 0 11 10 +- 39 2 +- 26 3 7810 24 Apr 06 09:09 LAG2 12 0 27 19 +- 80 -4 +- 40 6 7810 24 Apr 06 10:11 LAG1 15 0 15 14 +- 48 1 +- 22 7 7810 24 Apr 06 13:24 LAG2 4 0 19 20 +- 269 0 +- 411 0 7810 24 Apr 06 13:49 LAG1 12 0 19 18 +- 52 -3 +- 39 3 7810 25 Apr 06 23:04 LAG1 2 0 17 2 +- 502 -21 +- 697 0 7810 29 Apr 06 21:33 LAG1 2 0 5 -128 +-9153 49 +-3689 0 7810 30 Apr 06 01:40 LAG2 21 0 19 18 +- 39 0 +- 25 5 7810 30 Apr 06 05:42 LAG2 22 0 15 10 +- 42 -4 +- 29 4 7810 30 Apr 06 09:07 LAG1 12 0 65 72 +- 61 13 +- 35 15 7810 30 Apr 06 09:57 LAG2 2 0 38 32 +- 203 -4 +- 133 0 7810 30 Apr 06 12:43 LAG1 7 0 25 -25 +- 70 1 +- 39 4 7810 30 Apr 06 19:29 LAG1 15 0 10 -7 +- 49 1 +- 27 5 Station 7811 (Borowiec) (position fixed, acc. 60 mm) 7811 24 Apr 06 01:33 LAG2 4 0 31 28 +- 198 2 +- 339 12 7811 24 Apr 06 20:49 LAG1 13 0 22 17 +- 53 -13 +- 47 11 7811 25 Apr 06 19:21 LAG1 13 0 35 32 +- 50 -5 +- 32 9 7811 26 Apr 06 01:35 LAG2 5 0 47 52 +- 105 74 +- 168 20 7811 27 Apr 06 20:14 LAG1 10 0 35 26 +- 58 0 +- 59 23 Station 7821 (Shanghai Observatory) (position solved, acc. 50 mm) 7821 24 Apr 06 20:07 LAG2 5 0 3 0 +- 347 0 +- 258 3 Station 7824 (San Fernando) (position fixed, acc. 40 mm) 7824 24 Apr 06 20:35 LAG1 6 0 53 77 +- 381 10 +- 159 1 7824 26 Apr 06 21:25 LAG1 10 0 60 47 +- 67 -10 +- 44 3 7824 28 Apr 06 22:31 LAG1 6 0 39 43 +- 73 -8 +- 94 4 7824 29 Apr 06 20:49 LAG1 14 0 20 8 +- 34 -8 +- 18 2 7824 30 Apr 06 20:01 LAG1 4 0 39 -5 +- 889 18 +- 365 2 Station 7825 (Mount Stromlo) (position solved, acc. 10 mm) 7825 23 Apr 06 04:47 LAG2 16 0 14 15 +- 11 -3 +- 6 3 7825 23 Apr 06 08:43 LAG2 20 0 11 6 +- 9 -5 +- 5 2 7825 23 Apr 06 10:06 LAG1 14 0 14 13 +- 11 -1 +- 8 2 7825 23 Apr 06 12:54 LAG2 10 0 10 -1 +- 14 -7 +- 9 3 7825 23 Apr 06 13:51 LAG1 7 0 11 -11 +- 15 0 +- 18 3 7825 23 Apr 06 23:47 LAG1 20 1 7 0 +- 9 2 +- 6 6 7825 24 Apr 06 06:49 LAG2 23 0 4 2 +- 8 0 +- 5 3 7825 24 Apr 06 10:57 LAG2 24 0 10 -4 +- 8 5 +- 5 4 7825 24 Apr 06 12:13 LAG1 24 0 10 -7 +- 8 -2 +- 4 4 7825 24 Apr 06 15:03 LAG2 16 0 10 0 +- 10 9 +- 9 2 7825 24 Apr 06 15:53 LAG1 6 0 12 9 +- 17 -8 +- 27 2 7825 24 Apr 06 22:34 LAG1 4 0 13 -10 +- 47 1 +- 33 6 7825 25 Apr 06 04:59 LAG2 20 0 19 17 +- 10 1 +- 6 5 7825 25 Apr 06 09:01 LAG2 22 0 22 -6 +- 8 -16 +- 6 1 7825 25 Apr 06 10:51 LAG1 20 0 9 -4 +- 9 3 +- 5 3 7825 25 Apr 06 13:09 LAG2 21 0 14 -1 +- 9 -8 +- 5 2 7825 25 Apr 06 14:29 LAG1 18 0 10 -3 +- 10 6 +- 6 2 7825 25 Apr 06 18:02 LAG1 6 0 6 6 +- 26 -4 +- 30 4 7825 25 Apr 06 21:09 LAG1 14 0 3 -1 +- 11 0 +- 5 2 7825 26 Apr 06 00:45 LAG1 11 0 16 -12 +- 13 7 +- 16 2 7825 26 Apr 06 03:01 LAG2 10 0 11 8 +- 25 8 +- 19 9 7825 26 Apr 06 07:15 LAG2 17 0 5 1 +- 13 2 +- 9 3 7825 26 Apr 06 09:41 LAG1 9 0 4 1 +- 14 -4 +- 25 3 7825 26 Apr 06 11:13 LAG2 24 0 10 -1 +- 8 5 +- 5 5 7825 26 Apr 06 13:03 LAG1 21 0 14 -2 +- 9 -7 +- 5 3 7825 26 Apr 06 15:25 LAG2 20 0 4 1 +- 9 0 +- 8 4 7825 26 Apr 06 16:41 LAG1 4 0 19 22 +- 25 -8 +- 22 1 7825 26 Apr 06 19:48 LAG1 19 0 13 0 +- 9 -8 +- 6 4 7825 26 Apr 06 23:29 LAG1 4 0 12 -5 +- 34 13 +- 63 2 7825 27 Apr 06 05:16 LAG2 15 0 12 14 +- 13 -5 +- 7 3 7825 27 Apr 06 09:19 LAG2 21 0 27 -1 +- 9 -20 +- 7 2 7825 27 Apr 06 11:39 LAG1 18 0 16 -1 +- 9 8 +- 5 4 7825 27 Apr 06 13:23 LAG2 23 0 9 6 +- 8 -2 +- 5 4 7825 27 Apr 06 15:12 LAG1 13 0 12 0 +- 11 8 +- 9 6 7825 27 Apr 06 18:45 LAG1 6 0 9 -8 +- 19 10 +- 38 5 7825 27 Apr 06 22:03 LAG1 12 0 9 1 +- 14 -5 +- 7 3 7825 28 Apr 06 07:17 LAG2 23 0 25 -9 +- 8 17 +- 6 2 7825 30 Apr 06 07:31 LAG2 13 0 6 -5 +- 12 -3 +- 8 4 7825 30 Apr 06 11:11 LAG1 3 0 8 -9 +- 40 -1 +- 28 4 7825 30 Apr 06 11:43 LAG2 9 0 10 6 +- 14 -3 +- 8 4 Station 7832 (Riyad) (position solved, acc. 20 mm) 7832 23 Apr 06 03:30 LAG2 6 0 13 -10 +- 59 -3 +- 77 4 7832 23 Apr 06 14:51 LAG1 12 0 14 4 +- 19 13 +- 21 2 7832 23 Apr 06 18:09 LAG1 9 0 11 15 +- 54 4 +- 30 5 7832 24 Apr 06 06:55 LAG1 5 0 13 7 +- 76 18 +- 70 0 7832 24 Apr 06 23:28 LAG2 8 0 6 6 +- 35 -2 +- 35 4 7832 25 Apr 06 03:38 LAG2 11 0 22 -9 +- 23 -21 +- 34 4 7832 26 Apr 06 01:27 LAG2 12 0 18 11 +- 19 13 +- 17 2 7832 26 Apr 06 17:43 LAG1 5 0 9 -7 +- 77 -13 +- 66 2 7832 26 Apr 06 23:35 LAG2 11 0 12 -11 +- 19 6 +- 24 3 7832 28 Apr 06 19:57 LAG2 5 0 19 -19 +- 34 0 +- 136 2 7832 29 Apr 06 00:05 LAG2 11 0 13 -17 +- 72 16 +- 41 3 7832 29 Apr 06 17:11 LAG1 11 0 8 -1 +- 20 2 +- 17 7 7832 29 Apr 06 21:59 LAG2 12 0 10 7 +- 24 2 +- 24 4 7832 30 Apr 06 01:53 LAG2 8 0 4 -1 +- 84 1 +- 72 2 7832 30 Apr 06 16:03 LAG1 6 0 11 -38 +- 97 21 +- 63 1 Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm) 7838 24 Apr 06 09:33 LAG1 15 0 64 61 +- 24 9 +- 18 5 7838 24 Apr 06 13:07 LAG1 12 0 36 33 +- 28 6 +- 26 6 7838 25 Apr 06 01:25 LAG1 9 0 48 44 +- 36 2 +- 15 5 7838 25 Apr 06 04:42 LAG2 5 0 64 85 +- 400 -11 +- 211 10 7838 25 Apr 06 11:37 LAG1 17 0 60 53 +- 23 13 +- 12 5 7838 25 Apr 06 17:56 LAG2 14 0 60 51 +- 26 11 +- 16 8 7838 27 Apr 06 12:24 LAG1 9 0 48 51 +- 40 37 +- 26 6 7838 27 Apr 06 18:30 LAG2 5 0 86 65 +- 166 18 +- 139 4 Station 7839 (Graz) (position fixed, acc. 10 mm) 7839 25 Apr 06 03:23 LAG2 16 0 5 -6 +- 12 1 +- 8 1 7839 25 Apr 06 07:23 LAG2 7 0 10 -10 +- 76 -12 +- 46 0 Station 7840 (Herstmonceux) (position fixed, acc. 20 mm) 7840 26 Apr 06 11:04 LAG1 7 0 2 1 +- 53 0 +- 35 1 7840 27 Apr 06 07:37 LAG2 10 0 19 3 +- 21 -16 +- 18 2 7840 28 Apr 06 01:36 LAG2 15 0 33 1 +- 17 25 +- 13 4 7840 28 Apr 06 15:23 LAG1 10 0 22 11 +- 21 -10 +- 13 2 7840 28 Apr 06 18:51 LAG1 17 0 25 -12 +- 16 -11 +- 9 1 7840 28 Apr 06 22:25 LAG1 17 0 5 -2 +- 16 3 +- 13 2 7840 29 Apr 06 07:51 LAG2 10 0 18 5 +- 20 -14 +- 17 1 Station 7841 (Potsdam) (position solved, acc. 10 mm) 7841 24 Apr 06 21:13 LAG1 3 0 1 0 +- 355 0 +- 181 1 Station 7941 (Matera) (position solved, acc. 10 mm) 7941 24 Apr 06 09:17 LAG2 10 0 7 16 +- 54 5 +- 29 3 7941 24 Apr 06 10:15 LAG1 6 0 4 27 +- 127 10 +- 54 1 7941 24 Apr 06 13:47 LAG1 9 0 11 5 +- 19 -3 +- 19 6 7941 24 Apr 06 17:01 LAG1 12 0 6 -8 +- 22 -2 +- 12 2 7941 24 Apr 06 20:43 LAG1 13 0 17 -2 +- 12 -9 +- 7 3 7941 24 Apr 06 23:21 LAG2 6 0 7 12 +- 48 22 +- 64 1 7941 25 Apr 06 03:29 LAG2 1 0 4 0 +- 0 0 +- 0 0 7941 25 Apr 06 07:22 LAG2 10 0 4 -9 +- 39 -7 +- 26 2 Station 8834 (Wettzell) (position fixed, acc. 10 mm) 8834 23 Apr 06 07:19 LAG2 2 0 3 -32 +- 330 -34 +- 374 0 8834 23 Apr 06 11:15 LAG2 2 0 95 505 +-1087 243 +- 645 0 8834 23 Apr 06 22:19 LAG1 5 0 87 -1 +- 19 -290 +- 65 0*CHK* 8834 24 Apr 06 05:01 LAG2 22 0 12 -7 +- 9 4 +- 5 4 8834 24 Apr 06 09:37 LAG2 1 0 83 0 +- 0 0 +- 0 0 8834 30 Apr 06 05:53 LAG2 11 0 13 -15 +- 15 -5 +- 12 2 8834 30 Apr 06 10:37 LAG2 2 0 10 -115 +-2722 45 +-1184 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 -------------------------------------------------------------------------- 1864 MD2LAS 060104 - 060427 0/ 39/ 0 0/ 13/ 0 52 1873 SIMLAS 060328 - 060427 0/ 8/ 0 0/ 1/ 0 9 1884 RIGLAS 060112 - 060424 0/ 31/ 0 0/ 8/ 0 39 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 - 060501 87/ 84/ 8 80/ 49/ 8 316 7080 MLRS25 060102 - 060416 1/ 45/ 1 4/ 29/ 1 81 7090 ML0514 060101 - 060428 150/174/ 14 84/184/ 17 623 7105 ML0725 060106 - 060428 12/ 64/ 2 14/ 27/ 2 121 7110 ML0414 060103 - 060428 48/ 64/ 5 50/ 32/ 6 205 7124 ML0819 060225 - 060420 0/ 26/ 0 0/ 15/ 0 41 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 - 060428 6/ 15/ 0 6/ 13/ 0 40 7358 GMSL 060111 - 060425 1/ 11/ 0 1/ 7/ 0 20 7405 TIGO 060103 - 060302 0/ 9/ 0 0/ 5/ 0 14 7406 060223 - 060501 0/107/ 0 0/113/ 0 220 7501 ML0616 060117 - 060428 16/ 46/ 1 8/ 55/ 3 129 7810 ZIMLAT 060103 - 060501 87/ 87/ 8 78/ 49/ 7 316 7811 POLLAS 060109 - 060427 0/ 31/ 0 0/ 7/ 0 38 7821 CHILAS 060106 - 060424 0/ 14/ 0 0/ 8/ 0 22 7824 SPNLAS 060109 - 060430 0/ 64/ 0 0/ 20/ 1 85 7825 STL3 060102 - 060430 95/113/ 11 73/145/ 13 450 7832 SALRO 060103 - 060430 49/ 92/ 4 70/ 56/ 7 278 7838 SHOLAS 060105 - 060427 29/ 73/ 1 34/ 33/ 4 174 7839 AUSLAS 060109 - 060425 57/ 64/ 4 59/ 29/ 5 218 7840 RGOLAS 060104 - 060429 61/ 72/ 8 60/ 24/ 6 231 7841 GFZLA3 060107 - 060424 10/ 50/ 3 12/ 21/ 6 102 7941 MLROnn 060125 - 060425 41/ 52/ 2 37/ 27/ 7 166 8834 WLRS01 060105 - 060501 51/ 49/ 3 61/ 32/ 9 205 -------------------------------------------------------------------------- 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) -------------------------------------------------------------- 060424.0 105.5 +/- 0.1 363.6 +/- 0.1 265.33 +/- 0.01 060425.0 105.9 +/- 0.1 363.5 +/- 0.1 263.85 +/- 0.02 060426.0 106.0 +/- 0.1 362.5 +/- 0.1 262.33 +/- 0.02 060427.0 106.7 +/- 0.1 362.5 +/- 0.1 260.88 +/- 0.03 060428.0 105.9 +/- 0.1 362.3 +/- 0.1 259.72 +/- 0.03 060429.0 109.0 +/- 0.3 363.2 +/- 0.4 258.92 +/- 0.05 060430.0 108.6 +/- 0.2 360.6 +/- 0.5 258.77 +/- 0.06 -------------------------------------------------------------- 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 ******************************************************************************** |