Author: AC Coordinator / AIUB/CODE Ultra Rapid IGS Orbit Comparison - Week 1180 Day: 2 Hour: 12 (Aug 20, 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 1.1180.2 GPS week: 1180 Day: 2 MJD: 52506.5 CENT STA| DX DY DZ RX RY RZ SCL RMS WRMS | TOFT TDRFT RMS --------|------------------------------------------------|--------------------- brd |-.48-0.49 0.17 0.59 2.05 7.65 8.1 2.67 2.67 | 0.2 2.3 6.17 cou n/a|-.06 0.01 0.00 -0.07 0.08 0.94 -0.3 0.13 0.09 | 2.3 -3.8 9.86 emu n/a|-.04 0.00 0.02 -0.59 0.01 0.64 -0.4 3.15 0.15 | 0.0 0.0 0.00 esu n/a|-.04-0.03-0.02 -0.86 0.40 -0.52 0.8 8.71 0.20 | 246.3 5.8 4.67 gfu n/a|-.03 0.00 0.02 -0.21 0.18 -0.18 -0.3 0.15 0.09 | -2.5 1.2 6.67 jpu n/a|-.02 0.00 0.01 -0.08 0.25 0.66 -0.1 0.14 0.14 | 0.0 0.0 0.00 siu n/a|0.00 0.00 0.00 -0.27 -0.33 0.20 0.0 0.20 0.11 | 0.0 0.0 0.00 usu n/a|-.05 0.04 0.00 -0.85 -0.32 -0.09 0.1 0.50 0.13 |-1814.0 -38.1 4.25 igu n/a|-.03 0.01 0.00 -0.49 0.03 0.12 0.1 0.15 0.07 | 3.4 -11.4 4.97 igr n/a|0.00 0.00 0.00 0.00 0.00 0.00 0.0 0.00 0.00 | -0.3 -0.9 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 2.1180.2 GPS week: 1180 Day: 2 MJD: 52506.5 Weighted Average PRN | brd cou emu esu gfu jpu siu usu igu igr IGR | ------|----------------------------------------------| 1 | 196 9 7 7 8 15 6 8 5 0 0 | 2 | 114 --- 10 --- 13 13 17 16 10 0 0 | 3 | 160 8 10 14 5 8 6 5 4 0 0 | 4 | 148 20 16 25 7 6 6 19 6 0 0 | 5 | 195 8 6 27 9 17 6 14 6 0 0 | 6 | 341 6 4 21 10 10 6 9 5 0 0 | 7 | 109 4 4 9 6 13 8 7 3 0 0 | 8E | 149 22 75 17 --- 13 84 202 50 0 0 | 9E | 138 45 45 22 38 4 15 44 25 0 0 | 10 | 105 7 14 15 4 5 9 10 3 0 0 | 11 | 190 13 11 19 9 8 10 9 5 0 0 | 13 | 157 13 21 25 9 21 13 21 7 0 0 | 14 | 101 8 18 11 6 16 6 10 7 0 0 | 15E | 280 --- 25 --- 31 7 --- 72 28 0 0 | 17E | >>> --- >>> >>> --- --- --- --- --- 0 0 | 18 | 112 9 10 21 10 7 22 13 6 0 0 | 20 | 170 8 13 17 8 10 15 22 11 0 0 | 21 | 288 --- 77 --- --- 25 --- --- --- 0 0 | 22 | 131 12 7 29 6 10 12 13 5 0 0 | 23 | 231 6 20 --- 8 6 15 60 13 0 0 | 24 | 116 --- 11 15 17 15 19 98 21 0 0 | 25E | 196 10 14 8 13 34 20 48 11 0 0 | 26 | 217 5 11 17 7 12 10 14 4 0 0 | 27E | 253 22 24 34 45 12 23 54 25 0 0 | 28 | 146 8 10 12 5 15 6 10 4 0 0 | 29 | 65 7 8 17 13 11 9 15 8 0 0 | 30 | 129 5 5 26 6 5 8 6 6 0 0 | 31 | 98 8 7 23 4 11 12 12 8 0 0 | ------|----------------------------------------------| RMS | 267 13 315 871 15 14 20 50 15 0 | WRMS | 267 9 15 20 9 14 11 13 7 0 | MEDI | 153 8 11 18 8 11 10 14 7 0 |