Author: AC Coordinator / AIUB/CODE Ultra Rapid IGS Orbit Comparison - Week 1214 Day: 5 Hour: 00 (Apr 18, 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 USU IGU 2. Because of a maneuver, some satellites were excluded from the Prediction combination. The following table lists the maneuvered satellites: PRN | Date | Ref. NANU ----+------------+----------- 17 | 2003_04_18 | 2003040 _______________________________________________________________________________ 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 1.1214.5 GPS week: 1214 Day: 5 MJD: 52747.0 CENT STA| DX DY DZ RX RY RZ SCL RMS WRMS | TOFT TDRFT RMS --------|------------------------------------------------|--------------------- brd n/a|0.29 0.38 0.17 0.05 -2.75 -1.07 12.2 1.87 1.87 | 2.4 -8.5 6.63 cou n/a|0.01 0.00 0.00 1.66 0.26 3.69 -0.6 0.39 0.14 | -0.9 -3.1 14.59 emu n/a|-.01-0.03-0.01 0.09 -0.02 -0.48 -0.5 0.14 0.09 | 1081.7 34.8 5.26 esu n/a|-.05-0.05 0.00 -2.17 -2.14 -0.52 0.1 0.21 0.21 | 228.8 -1.9 4.85 gfu n/a|0.01 0.00-0.01 0.20 -0.05 -0.51 -0.4 0.18 0.15 | -1.3 -4.8 6.09 usu n/a|0.00 0.02-0.01 -0.35 -0.21 0.27 0.0 0.24 0.12 | 541.9 6.2 5.56 igu n/a|-.01 0.00-0.01 -0.22 -0.43 -0.29 -0.3 0.13 0.09 | 0.0 -4.6 5.05 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 2.1214.5 GPS week: 1214 Day: 5 MJD: 52747.0 Weighted Average PRN | brd cou emu esu gfu usu igu igr IGR | ------|--------------------------------------| 1 | 163 10 7 20 5 9 6 0 0 | 2 | 119 94 33 20 4 73 28 0 0 | 3 | 72 12 5 16 9 8 3 0 0 | 4 | 75 17 8 8 11 12 8 0 0 | 5 | 140 17 6 21 6 8 7 0 0 | 6 | 397 10 4 14 4 7 4 0 0 | 7 | 227 27 9 6 8 7 6 0 0 | 8 | 89 19 10 14 17 9 5 0 0 | 9 | 59 9 8 34 6 5 8 0 0 | 10E | 201 7 12 25 37 14 6 0 0 | 11 | 445 12 15 33 13 7 9 0 0 | 13 | 172 10 11 27 6 7 9 0 0 | 14 | 94 21 6 20 7 11 5 0 0 | 15 | 57 156 12 --- 48 46 10 0 0 | 16 | 163 24 8 19 7 33 8 0 0 | 18E | 111 35 8 21 21 21 10 0 0 | 20E | 111 14 9 33 8 14 6 0 0 | 21 | 326 39 16 36 8 27 14 0 0 | 22 | 245 18 8 17 34 9 12 0 0 | 23E | 318 12 39 --- 44 61 42 0 0 | 24 | 71 9 11 11 10 16 7 0 0 | 25 | 57 14 14 13 19 10 12 0 0 | 26 | 116 4 7 12 6 12 5 0 0 | 27 | 159 12 10 25 8 15 5 0 0 | 28 | 124 13 14 22 14 10 13 0 0 | 29 | 66 32 19 28 15 35 16 0 0 | 30 | 137 9 5 17 5 5 4 0 0 | 31 | 76 6 8 7 7 5 5 0 0 | ------|--------------------------------------| RMS | 187 39 14 21 18 24 13 0 | WRMS | 187 14 9 21 15 12 9 0 | MEDI | 122 14 9 20 8 11 8 0 |