Author: AC Coordinator / AIUB/CODE Ultra Rapid IGS Orbit Comparison - Week 1177 Day: 4 Hour: 00 (Aug 01, 2002) Contacts: R. Weber (rweber@luna.tuwien.ac.at), H. Bock (bock@aiub.unibe.ch), R. Dach (dach@aiub.unibe.ch) 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 JPU 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 1.1177.4 GPS week: 1177 Day: 4 MJD: 52487.0 CENT STA| DX DY DZ RX RY RZ SCL RMS WRMS | TOFT TDRFT RMS --------|------------------------------------------------|--------------------- brd n/a|0.21 0.26 0.31 -4.98 -1.71 7.29 10.1 2.44 2.44 | 0.6 -6.6 6.95 cou n/a|0.06 0.01-0.01 -0.48 -1.88 0.47 0.0 0.32 0.11 | -3.5 -3.1 18.34 emu n/a|0.01 0.01 0.02 -0.15 -0.33 -0.21 0.1 3.50 0.42 | 0.0 0.0 0.00 esu n/a|-.03-0.07-0.01 0.64 -1.23 -0.66 0.6 0.49 0.27 | 40.7 3.7 6.05 gfu n/a|0.00 0.00 0.01 -0.34 -0.26 -0.12 -0.1 0.12 0.12 | 0.3 -3.8 6.94 jpu n/a|-.01-0.05-0.02 -1.23 -0.45 1.24 -0.2 1.02 0.54 | 0.0 0.0 0.00 siu n/a|-.06 0.00 0.02 -0.38 0.34 -0.15 -0.4 0.71 0.18 | 0.0 0.0 0.00 usu n/a|0.02-0.01 0.00 -0.55 0.02 -0.02 0.3 0.15 0.11 |-1166.7 -32.6 3.43 igu n/a|-.01-0.01 0.00 -0.29 -0.27 -0.08 0.0 0.16 0.10 | -4.4 -4.4 6.53 igr n/a|0.00 0.00 0.00 0.00 0.00 0.00 0.0 0.00 0.00 | -1.3 1.2 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 2.1177.4 GPS week: 1177 Day: 4 MJD: 52487.0 Weighted Average PRN | brd cou emu esu gfu jpu siu usu igu igr IGR | ------|----------------------------------------------| 1 | 254 16 4 21 4 14 18 6 6 0 0 | 2 | 281 --- 131 --- --- --- 178 --- --- 0 0 | 3 | 115 17 15 24 14 21 46 7 3 0 0 | 4E | 191 8 16 92 24 15 40 26 25 0 0 | 5 | 139 10 6 14 7 11 6 5 2 0 0 | 6 | 248 9 11 9 6 23 6 13 9 0 0 | 7 | 55 9 13 19 13 5 10 9 5 0 0 | 8 | 129 14 8 15 20 10 7 7 8 0 0 | 9 | 230 11 7 15 12 30 11 12 10 0 0 | 10 | 101 5 8 19 5 11 9 5 3 0 0 | 11E | 248 7 15 43 15 16 57 11 9 0 0 | 13 | 103 7 5 16 18 13 10 4 5 0 0 | 14 | 131 8 24 48 22 27 53 5 23 0 0 | 15E | 191 --- >>> --- --- 23 --- --- --- 0 0 | 17E | 274 --- 133 57 21 --- 49 --- 66 0 0 | 18 | 87 7 11 44 11 32 20 8 7 0 0 | 20 | 122 10 8 17 4 11 26 9 9 0 0 | 21 | 853 --- >>> 202 --- 531 292 --- --- 0 0 | 22 | 263 11 11 39 10 9 15 9 5 0 0 | 23 | 259 5 7 --- 6 12 92 57 17 0 0 | 24E | 226 159 24 19 --- 10 20 --- 6 0 0 | 25E | 187 17 6 9 18 14 23 9 4 0 0 | 26 | 93 4 4 31 10 11 24 8 7 0 0 | 27E | 220 14 9 19 5 21 8 18 11 0 0 | 28 | 102 11 6 15 13 23 27 20 14 0 0 | 29 | 58 17 10 18 13 17 29 14 4 0 0 | 30 | 229 18 8 7 8 24 13 17 4 0 0 | 31 | 102 17 7 27 10 15 13 10 5 0 0 | ------|----------------------------------------------| RMS | 244 32 350 49 12 102 71 15 16 0 | WRMS | 244 11 42 27 12 54 18 11 10 0 | MEDI | 189 11 10 19 12 15 20 9 7 0 |