Author: AC Coordinator / GFZ Potsdam Ultra Rapid IGS Orbit Comparison - Week 1281 Day: 4 Hour: 00 (Jul 29, 2004) 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 1.1281.4 GPS week: 1281 Day: 4 MJD: 53215.000 CENT STA| DX DY DZ RX RY RZ SCL RMS WRMS | TOFT TDRFT RMS --------|------------------------------------------------|--------------------- brd n/a|0.30 0.29 0.41 -0.26 -8.43 6.08 33.6 2.08 2.08 | -0.2 1.1 5.74 cou n/a|0.03 0.01 0.01 0.27 0.33 -0.27 -0.5 0.16 0.05 | -0.2 1.9 7.11 emu n/a|0.01 0.02 0.01 0.20 0.33 -0.24 0.1 0.10 0.05 | 1527.2 28.0 2.65 esu n/a|0.04 0.04 0.02 -0.13 0.30 0.37 0.9 0.26 0.07 | 505.9 33.9 2.95 gfu n/a|-.02 0.01 0.01 0.48 -0.26 0.03 -0.3 0.18 0.05 | -1.1 -3.3 2.68 siu n/a|0.01 0.02-0.03 -0.10 -0.20 1.33 0.3 0.10 0.11 | 0.0 0.0 0.00 usu n/a|0.03 0.05 0.04 -0.13 -0.02 0.61 -0.1 0.83 0.15 | 506.6 36.7 3.78 igu n/a|0.02 0.02 0.00 0.13 0.15 0.07 0.0 0.07 0.05 | -0.1 -1.9 2.46 igr n/a|0.00 0.00 0.00 0.00 0.00 0.00 0.0 0.00 0.00 | -5.4 -0.4 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. (first 6 hours of the prediction) 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 2.1281.4 GPS week: 1281 Day: 4 MJD: 53215.000 Weighted Average PRN | brd cou emu esu gfu siu usu igu igr IGR | ------|------------------------------------------| 1 | 493 6 4 5 4 3 10 4 0 0 | 3 | 420 3 5 14 6 4 10 3 0 0 | 4 | 77 3 3 4 3 5 23 1 0 0 | 5 | 252 5 14 7 5 20 9 6 0 0 | 6 | 179 3 2 6 2 6 9 2 0 0 | 7 | 84 4 3 3 4 5 5 2 0 0 | 8E | 120 12 19 13 43 11 --- 14 0 0 | 9E | 233 16 13 27 37 16 30 21 0 0 | 10 | 103 4 5 4 3 8 11 4 0 0 | 11 | 71 5 4 8 4 6 13 3 0 0 | 13 | 99 4 6 3 4 13 10 4 0 0 | 14 | 205 4 5 7 6 6 11 4 0 0 | 15 | 161 2 4 6 4 7 11 2 0 0 | 16 | 75 8 25 7 5 13 28 8 0 0 | 17 | 205 3 7 2 4 9 8 3 0 0 | 18 | 48 7 7 6 8 18 23 8 0 0 | 19 | 67 10 8 10 6 21 14 3 0 0 | 20 | 119 9 7 7 7 8 16 8 0 0 | 21 | 248 3 5 4 3 6 12 3 0 0 | 22 | 118 6 24 10 9 9 26 10 0 0 | 23 | 186 6 9 11 6 14 15 7 0 0 | 24 | 266 2 4 4 4 5 12 1 0 0 | 25E | 157 5 6 14 10 7 14 5 0 0 | 26 | 168 5 3 5 4 8 8 4 0 0 | 27E | 178 11 8 13 11 3 35 3 0 0 | 28 | 185 6 8 10 7 8 16 7 0 0 | 29 | 311 76 --- 131 73 --- 432 --- 0 0 | 30 | 304 2 6 7 4 3 11 2 0 0 | 31 | 55 7 5 11 4 4 8 5 0 0 | ------|------------------------------------------| RMS | 208 16 10 26 18 10 83 7 0 | WRMS | 208 5 5 7 5 11 15 5 0 | MEDI | 168 5 6 7 5 8 12 4 0 | Comparison of 24h data part to the IGS Rapid Orbits Table 3: Daily fit for each satellite and each centre resulting from the comparison of the individual solutions to the IGS Rapid solution. (24 hours of adjusted orbits) 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. Remark: COU results for 06 UT are the prediction from the 00 UT results, i.e. last 6 hours are predicted and are therefore excluded from the comparison. Units: cm. Table 3.1281.3 GPS week: 1281 Day: 3 MJD: 53214.000 Weighted Average PRN | cou emu esu gfu siu usu igu igr IGR | ------|--------------------------------------| 1 | 3 2 3 3 5 9 2 0 0 | 3 | 3 3 8 3 3 7 2 0 0 | 4 | 3 2 3 2 6 88 1 0 0 | 5 | 2 4 3 2 7 11 1 0 0 | 6 | 2 3 4 2 8 9 2 0 0 | 7 | 2 2 3 3 6 15 1 0 0 | 8E | 3 7 4 5 4 --- 3 0 0 | 9E | 3 3 5 4 7 12 3 0 0 | 10 | 2 2 3 2 4 4 1 0 0 | 11 | 4 3 5 5 5 12 2 0 0 | 13 | 2 3 5 3 4 8 2 0 0 | 14 | 3 3 4 3 4 9 2 0 0 | 15 | 2 5 4 3 4 7 2 0 0 | 16 | 4 7 6 4 10 8 3 0 0 | 17 | 2 3 2 3 3 8 1 0 0 | 18 | 3 4 4 2 6 9 3 0 0 | 19 | 3 5 6 3 12 11 2 0 0 | 20 | 3 2 3 2 6 8 2 0 0 | 21 | 2 4 3 3 4 8 2 0 0 | 22 | 3 9 5 3 6 11 3 0 0 | 23 | 3 3 4 3 9 9 2 0 0 | 24 | 2 2 3 2 4 13 2 0 0 | 25E | 3 4 4 3 4 10 2 0 0 | 26 | 3 2 4 2 5 12 1 0 0 | 27E | 3 3 4 3 4 8 1 0 0 | 28 | 3 4 6 3 4 5 3 0 0 | 29 | 10 --- 80 9 --- 12 --- 0 0 | 30 | 2 3 3 1 4 45 3 0 0 | 31 | 2 3 5 2 4 10 1 0 0 | ------|--------------------------------------| RMS | 3 4 15 3 6 21 2 0 | WRMS | 2 3 4 3 5 23 2 0 | MEDI | 3 3 4 3 5 9 2 0 |