Author: AC Coordinator / AIUB/CODE Ultra Rapid IGS Orbit Comparison - Week 1177 Day: 6 Hour: 00 (Aug 03, 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 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 1.1177.6 GPS week: 1177 Day: 6 MJD: 52489.0 CENT STA| DX DY DZ RX RY RZ SCL RMS WRMS | TOFT TDRFT RMS --------|------------------------------------------------|--------------------- brd n/a|0.67 0.15 0.25 -4.06 1.84 7.30 4.0 2.51 2.51 | 1.1 -2.6 5.22 cou n/a|0.04-0.02-0.02 -1.33 -0.01 1.35 0.1 3.44 0.18 | -3.5 0.0 26.89 emu n/a|0.00 0.01 0.02 -0.19 -0.14 -0.66 -0.4 5.79 1.04 | 0.0 0.0 0.00 gfu n/a|0.00-0.01 0.02 0.13 0.69 0.06 -0.1 0.36 0.39 | -2.1 6.2 5.07 jpu n/a|-.01-0.01-0.01 -0.53 -0.69 0.08 -0.4 0.37 0.48 | 0.0 0.0 0.00 siu n/a|-.08-0.03-0.03 1.48 0.24 0.53 1.5 0.70 0.42 | 0.0 0.0 0.00 usu n/a|0.02-0.06 0.00 -0.26 0.07 -1.36 0.5 0.21 0.13 |-1235.8 -33.5 3.42 igu n/a|-.01-0.04 0.01 -0.17 0.13 -0.48 -0.1 0.34 0.34 | -1.4 0.3 4.66 igr n/a|0.00 0.00 0.00 0.00 0.00 0.00 0.0 0.00 0.00 | 0.3 1.1 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 2.1177.6 GPS week: 1177 Day: 6 MJD: 52489.0 Weighted Average PRN | brd cou emu gfu jpu siu usu igu igr IGR | ------|------------------------------------------| 1 | 211 20 7 6 15 61 16 10 0 0 | 2 | 127 --- 17 9 --- --- --- --- 0 0 | 3 | 95 10 6 14 19 26 7 3 0 0 | 4E | 170 6 11 43 45 27 15 21 0 0 | 5 | 149 8 9 5 9 31 9 4 0 0 | 6 | 308 13 10 6 9 --- 10 7 0 0 | 7 | 131 7 4 5 10 40 10 5 0 0 | 8 | 111 16 6 5 11 48 14 7 0 0 | 9E | 206 6 13 14 23 20 11 5 0 0 | 10 | 96 7 14 7 21 100 12 9 0 0 | 11E | 109 38 5 26 14 66 9 15 0 0 | 13 | 168 16 10 16 29 29 8 7 0 0 | 14 | 128 6 12 5 16 --- 6 3 0 0 | 15E | 497 --- 30 --- 23 --- --- --- 0 0 | 17E | 449 --- >>> --- --- --- --- --- 0 0 | 18 | 114 18 31 11 14 --- 8 10 0 0 | 20 | 136 22 15 15 19 14 21 6 0 0 | 21 | 157 --- 172 177 168 --- --- 171 0 0 | 22 | 156 9 5 9 7 --- 10 6 0 0 | 23 | 289 8 15 7 9 --- 56 18 0 0 | 24E | 677 >>> --- --- 36 293 --- --- 0 0 | 25E | 267 20 7 15 12 36 71 16 0 0 | 26 | 73 9 12 4 17 99 10 10 0 0 | 27E | 132 10 27 33 17 68 20 26 0 0 | 28 | 146 8 4 14 38 11 10 13 0 0 | 29 | 77 27 8 4 11 89 27 12 0 0 | 30 | 131 6 7 5 12 36 6 5 0 0 | 31 | 456 20 12 9 10 --- 21 12 0 0 | ------|------------------------------------------| RMS | 251 345 579 36 37 70 21 34 0 | WRMS | 251 18 104 39 48 42 13 34 0 | MEDI | 148 10 11 9 16 38 10 10 0 |