Author: AC Coordinator / AIUB/CODE Ultra Rapid IGS Orbit Comparison - Week 1218 Day: 2 Hour: 00 (May 13, 2003) 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 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 1.1218.2 GPS week: 1218 Day: 2 MJD: 52772.0 CENT STA| DX DY DZ RX RY RZ SCL RMS WRMS | TOFT TDRFT RMS --------|------------------------------------------------|--------------------- brd n/a|0.65 0.14 0.26 -3.73 -0.51 -9.31 -0.5 2.17 2.17 | 11.9 19.3 15.92 cou n/a|-.01 0.00 0.01 0.39 1.53 -0.56 -0.6 1.21 0.71 | 7.4 14.2 48.66 emu n/a|0.00 0.00-0.01 -0.46 -0.20 1.02 0.2 1.20 0.59 | 1961.7 45.1 4.25 esu n/a|-.04-0.04-0.03 -2.59 -1.41 -0.65 0.2 1.12 0.22 | 110.1 12.2 4.36 gfu n/a|-.03 0.03 0.01 -0.44 0.64 0.25 -0.2 1.04 1.10 | 13.6 19.9 4.13 siu n/a|-.05-0.02-0.02 -1.35 0.33 2.85 -0.3 0.94 0.95 | 0.0 0.0 0.00 usu n/a|-.03 0.03 0.03 -0.98 -0.04 2.36 -0.2 1.20 0.72 | 599.5 16.1 3.63 igu n/a|-.03 0.02 0.00 -0.76 0.00 1.17 -0.2 1.10 0.38 | 0.4 -1.9 3.82 igr n/a|0.00 0.00 0.00 0.00 0.00 0.00 0.0 0.00 0.00 | 13.8 9.3 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 2.1218.2 GPS week: 1218 Day: 2 MJD: 52772.0 Weighted Average PRN | brd cou emu esu gfu siu usu igu igr IGR | ------|------------------------------------------| 1 | 316 8 7 15 13 18 12 4 0 0 | 2 | 207 116 20 26 24 36 65 15 0 0 | 3 | 149 47 12 21 49 17 95 37 0 0 | 4 | 87 25 7 12 8 13 14 6 0 0 | 5 | 108 7 4 22 6 11 16 8 0 0 | 6 | 390 150 22 20 35 14 59 24 0 0 | 7 | 107 24 42 11 28 95 32 16 0 0 | 8 | 277 16 22 11 17 25 12 10 0 0 | 9 | 149 16 8 12 8 17 22 9 0 0 | 10 | 121 4 19 9 14 13 24 15 0 0 | 11 | 222 11 12 39 16 26 17 11 0 0 | 13 | 128 6 10 27 14 16 17 15 0 0 | 14 | 70 10 14 20 8 20 22 9 0 0 | 15 | 141 30 55 --- 10 35 39 29 0 0 | 16 | 120 10 7 14 14 15 36 8 0 0 | 17 | 297 66 32 17 8 14 32 7 0 0 | 18 | 90 18 9 18 6 31 13 5 0 0 | 20 | 42 9 12 37 14 12 13 6 0 0 | 21 | 252 12 9 24 24 7 19 8 0 0 | 22 | 162 8 8 50 8 61 14 4 0 0 | 23 | 291 10 17 --- 9 13 17 9 0 0 | 24 | 472 286 297 228 196 --- 305 251 0 0 | 25 | 93 7 7 19 9 29 11 8 0 0 | 26 | 312 15 23 36 9 76 15 22 0 0 | 27 | 143 10 21 14 7 15 11 5 0 0 | 28 | 145 18 8 42 20 48 23 20 0 0 | 29 | 382 540 566 547 513 471 540 533 0 0 | 30 | 74 6 6 13 7 12 18 5 0 0 | 31 | 86 32 12 22 37 44 45 28 0 0 | ------|------------------------------------------| RMS | 217 121 120 112 104 94 119 110 0 | WRMS | 217 71 59 22 110 95 72 38 0 | MEDI | 145 15 12 20 14 18 19 9 0 |