Author: AC Coordinator / AIUB/CODE Ultra Rapid IGS Orbit Comparison - Week 1180 Day: 0 Hour: 12 (Aug 18, 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 ESU GFU JPU 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 1.1180.0 GPS week: 1180 Day: 0 MJD: 52504.5 CENT STA| DX DY DZ RX RY RZ SCL RMS WRMS | TOFT TDRFT RMS --------|------------------------------------------------|--------------------- brd |-.34-0.66 0.17 5.70 1.03 3.22 2.3 2.42 2.42 | 1.4 -2.6 6.05 cou n/a|0.03 0.04 0.01 -0.08 0.63 0.17 -0.3 0.12 0.08 | 1.2 -6.0 10.45 esu n/a|-.03-0.06-0.05 -0.31 -1.15 -1.09 -0.2 4.31 0.32 | 1464.0 -7.4 4.36 gfu n/a|0.00-0.01 0.02 0.10 -0.34 -0.46 0.0 0.18 0.10 | -1.1 -5.4 6.45 jpu n/a|0.03 0.00 0.00 0.14 -0.05 0.33 0.5 0.18 0.19 | 0.0 0.0 0.00 usu n/a|0.03 0.01 0.03 -0.12 0.76 -1.61 0.4 0.28 0.19 | 0.0 0.0 0.00 igu n/a|0.01-0.01 0.00 -0.03 -0.30 -0.38 0.2 0.14 0.07 | 2.0 -0.8 5.03 igr n/a|0.00 0.00 0.00 0.00 0.00 0.00 0.0 0.00 0.00 | 0.0 0.0 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 2.1180.0 GPS week: 1180 Day: 0 MJD: 52504.5 Weighted Average PRN | brd cou esu gfu jpu usu igu igr IGR | ------|--------------------------------------| 1 | 226 4 27 6 4 6 6 0 0 | 2 | 112 --- --- 16 26 31 15 0 0 | 3 | 133 15 33 7 13 38 8 0 0 | 4 | 354 39 --- 19 10 95 28 0 0 | 5 | 127 5 23 4 6 9 3 0 0 | 6 | 290 5 37 5 11 20 7 0 0 | 7 | 234 13 18 13 11 16 6 0 0 | 8 | 176 11 22 62 7 69 38 0 0 | 9 | 180 9 28 28 15 29 12 0 0 | 10 | 137 4 10 6 4 12 4 0 0 | 11 | 114 17 41 10 10 22 6 0 0 | 13 | 222 7 28 14 22 6 5 0 0 | 14 | 89 9 39 5 5 9 7 0 0 | 15 | 210 --- --- --- --- --- --- 0 0 | 17 | 877 --- >>> --- --- --- --- 0 0 | 18 | 93 7 68 5 28 12 15 0 0 | 20 | 204 8 28 6 6 12 6 0 0 | 21 | 191 --- --- --- 19 --- --- 0 0 | 22 | 103 6 38 8 4 13 8 0 0 | 23 | 216 11 --- 8 10 --- 4 0 0 | 24 | 222 --- 31 34 4 --- 20 0 0 | 25 | 184 7 25 22 73 38 32 0 0 | 26 | 53 6 23 13 16 13 5 0 0 | 27 | 204 20 34 39 9 --- 16 0 0 | 28 | 43 12 25 8 12 22 5 0 0 | 29 | 98 8 35 14 7 7 9 0 0 | 30 | 110 10 22 2 13 9 6 0 0 | 31 | 132 9 34 2 7 12 3 0 0 | ------|--------------------------------------| RMS | 242 12 431 18 18 28 14 0 | WRMS | 242 8 32 10 19 19 7 0 | MEDI | 178 9 28 8 10 13 7 0 |