Author: AC Coordinator / GFZ Potsdam Ultra Rapid IGS Orbit Comparison - Week 1228 Day: 4 Hour: 00 (Jul 24, 2003) Contacts: G. Gendt (gendt@gfz-potsdam.de), Th. Nischan (nisn@gfz-potsdam.de) COMBINATION STRATEGY: For a complete description of the combination strategy along with all tables and statistics, please refer to the IGS Final Combination reports posted on CDDIS within 13 days after the end of the GPS week. REMARKS on IGS Ultra Rapid Orbit Comparison: 1. The following Ultra-rapid orbits were excluded from the combination but kept for statistics: -> Centre: COU EMU ESU GFU SIU USU IGU _______________________________________________________________________________ Table 1: Daily transformation of each centre to the combined IGS Rapid orbit and clocks (IGR). WRMS - RMS weighted by the centres SP3 header accuracy codes. STA - Number of stations in the daily solutions. Units: meters, mas, ppb, nano-sec, nano-sec/day. Table 1.1228.4 GPS week: 1228 Day: 4 MJD: 52844.0 CENT STA| DX DY DZ RX RY RZ SCL RMS WRMS | TOFT TDRFT RMS --------|------------------------------------------------|--------------------- brd n/a|0.40 0.60 0.08 -2.79 -2.33 0.24 16.9 1.61 1.61 | -0.1 -0.3 5.73 cou n/a|0.00-0.01-0.02 -0.62 -0.06 -0.30 -0.9 0.58 0.36 | -0.6 -0.3 7.07 emu n/a|0.01-0.03 0.01 -0.32 -0.02 -0.55 -0.1 0.18 0.10 | 129.9 3.7 5.42 esu n/a|0.01 0.02-0.01 0.00 0.08 0.07 0.2 0.19 0.17 | 129.2 1.1 5.19 gfu n/a|0.02 0.01 0.02 -0.45 0.83 -0.14 -0.2 0.18 0.16 | 0.1 4.5 4.31 siu n/a|0.02 0.04 0.00 -0.64 0.84 -1.10 -0.6 0.21 0.16 | 0.0 0.0 0.00 usu n/a|0.02-0.02 0.01 -0.44 0.09 -1.22 0.2 0.35 0.12 | -342.5 -14.1 4.41 igu n/a|0.02-0.01 0.00 -0.42 0.52 -0.63 -0.1 0.17 0.16 | 0.5 3.0 4.64 igr n/a|0.00 0.00 0.00 0.00 0.00 0.00 0.0 0.00 0.00 | -0.4 3.2 0.00 Table 2: Daily fit for each satellite and each centre resulting from the comparison of the individual solutions to the IGS Rapid solution. The "igr" and "IGR" columns are zero since all centres are compared to the "igr" solution. Eclipsing satellites are flagged with and "E" beside the PRN number. "MEDI" stands for median of the centre's satellite RMS. Units: cm. Table 2.1228.4 GPS week: 1228 Day: 4 MJD: 52844.0 Weighted Average PRN | brd cou emu esu gfu siu usu igu igr IGR | ------|------------------------------------------| 1 | 220 50 6 8 7 8 12 4 0 0 | 2 | 89 7 7 12 7 24 7 6 0 0 | 3 | 207 6 5 6 10 16 9 4 0 0 | 4E | 148 70 12 32 20 19 22 12 0 0 | 5 | 85 52 4 21 6 5 7 4 0 0 | 6 | 301 14 10 9 8 14 17 9 0 0 | 7 | 67 27 13 9 10 9 13 10 0 0 | 8E | 154 8 15 5 11 15 17 8 0 0 | 9E | 200 96 50 25 31 19 111 44 0 0 | 10 | 189 28 11 12 12 14 6 4 0 0 | 11 | 80 13 10 14 4 8 16 6 0 0 | 13 | 88 25 7 28 12 15 5 6 0 0 | 14 | 111 15 8 11 24 11 10 6 0 0 | 15E | 241 103 25 --- 25 9 --- 20 0 0 | 16 | 192 66 6 11 16 23 11 9 0 0 | 17E | 247 78 21 31 --- 29 55 19 0 0 | 18 | 62 36 9 16 5 13 9 6 0 0 | 20 | 107 27 11 29 8 11 11 7 0 0 | 21E | 122 14 18 21 6 19 11 7 0 0 | 23 | 287 61 17 --- 10 28 21 16 0 0 | 24E | 81 150 26 21 25 12 54 21 0 0 | 25E | 119 14 15 13 35 21 44 21 0 0 | 26 | 123 20 3 12 8 31 9 3 0 0 | 27E | 145 95 19 15 28 10 94 28 0 0 | 28 | 103 39 13 21 24 45 15 20 0 0 | 29 | 127 84 43 46 44 54 46 44 0 0 | 30 | 140 40 10 16 7 8 7 4 0 0 | 31 | 65 35 5 12 9 16 7 7 0 0 | ------|------------------------------------------| RMS | 161 58 18 19 18 21 35 17 0 | WRMS | 161 36 10 17 16 16 12 16 0 | MEDI | 125 36 11 15 10 15 12 8 0 |