IVS-T2042 (International VLBI Service - Terrestical Reference Frame Observations) 2005 Dec. 20/21 doy 333/334 Geodetic Institute of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2005 (master05.txt) Purpose ======= General the purpose of the IVS-T2 sessions is to monitor the TRF via monthly sessions. Since April 2004 the purpose of the remaining IVS-T2 sessions has been changed by the IVS OPC (Observing Program Committee). The new plan uses larger networks for each T2 session, say 16 to 20 stations, but have fewer T2 sessions during the year. The larger network should provide a stronger solution and better TRF results, even if there are fewer sessions each year. The TRF determine from single session solutions or from a global solution is very important IVS product because this is an essential part for creating the ITRF by corresponding IERS Product Center. A particular strength of VLBI is its contribution to the scale of the ITRF. Usually the TRF is computed from the 24h sessions that are dedicated to observing the EOP. Network ======= The standard configuration of the monthly observed IVS-T2 experiments consists of sixteen and more stations. All stations differ in some extent between all available IVS geodetic network stations from experiment to experiment. Schedule ======== This schedule was generated by SKED (JMG/NRV 2005Feb22) using the EUR-SX band and the EURSX-C-2 frequency setup, depending on which station are available for this observation. Variable scan lengths with a minimum 40 sec. and the most recent source flux models are included. SNR goals are 20 at X-band and S-band depent on different baselines and stations. The predicted SNRs used include a 30 ps noise contribution added in quadrature, which is a typical magnitude for the reweight constants applied in SOLVE solutions. Some important optimization features enabled for this experiment : - the covariance analysis during schedule generation considers the previous 1 hours of observations, - minor SKED optimization parameters . maximum number of observations, . minimum time, were optimized over the best ( in a covariance sense ) 70% of the possible observations, this produces a somewhat more even sky distribution, - observations were weighted by their expected SNRs, - 30 ps noise contribution added, - mimimum time between observations of the same radio source was set to 20 min - using 63 source for improving the sky covorage (and some new astrometric sources / see $ASTROMETRIC ) Procedures ========== NO PREPASS TIME: There is no time allowed in the schedule for prepassing tapes. Therefore all tapes needed for this experiment must be pre-checked before the start of this experiment. CONDITIONING: Conditioning has to be done before recording with all used Mark 5 module(s)/disk package(s). ATTENTION ========== There are no observations for Wettzell from 18:20 U.T. to 19:40 U.T. Wettzell will participate in the intensive session during this period. --------------------------------------------------------------- Parameter values for experiment T2042 Experiment description: IVS-T2.042 Scheduler: BONN/Mueskens Correlator: see master05.txt file Nominal start: 2005-354-17:30:00 Nominal end: 2005-355-17:30:01 Current yyyyddd: 2005354 (2005.97) ( 13725 MJD, TUES 20DEC.) Greenwich sidereal time: 23:27:35.00 (17:30: 0 UT) Sun's RA and DEC: 17h 55.4m -23d 26.0 =========================================================== First observations Observation listing from file t2042.skd for experiment T2042 Source Start DURATIONS name yyddd-hhmmss Ap Sm 15 Ft Gc Ho Kb Nt Ny Gg Sv Tc Ur Wz 0552+398 05354-173000| 40 40 | 1044+719 05354-173000| 194 578 692 572 720 720 609 720| 1057-797 05354-173000| 195 195 | 1954-388 05354-173538| 308 308 | 2145+067 05354-180342| 42 284 285 121 195 84 285 156| End of listing. =========================================================== Last observations name yyddd-hhmmss Ap Sm 15 Ft Gc Ho Kb Nt Ny Gg Sv Tc Ur Wz 0556+238 05355-165918| 720 720 487 720 678 322 720 720| 1741-038 05355-170004| 40 40 438 438 | 2201+315 05355-170820| 53 112 112 | 0607-157 05355-170842| 40 40 | 0528+134 05355-171203| 41 86 86 40 60 59| 1519-273 05355-171328| 257 257 | 1908-201 05355-171358| 59 59 | 0955+476 05355-171433| 41 41 | CTA26 05355-171440| 122 122 40 122 86| 0454-234 05355-171905| 147 40 147 | OK290 05355-172040| 126 126 | 0727-115 05355-172355| 47 40 47 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 2.4 Min = .0 Max = 62.6 (Baseline Kb-Ur on 0405-385) RMS = 5.1 Total time: 1434 minutes ( 23.9 hours). Key: Ap=ALGOPARK Sm=CRIMEA 15=DSS15 Ft=FORTLEZA Gc=GILCREEK Ho=HOBART26 Kb=KASHIM34 Nt=NOTO Ny=NYALES20 Gg=ORION_5M Sv=SVETLOE Tc=TIGO Ur=URUMQI Wz=WETTZELL Ap Sm 15 Ft Gc Ho Kb Nt Ny Gg Sv Tc Ur Wz Avg % obs. time: 25 15 39 45 45 39 38 51 54 28 33 30 50 54 39 % cal. time: 2 0 2 1 2 1 2 2 2 0 2 1 2 1 1 % slew time: 60 4 33 24 13 25 28 25 10 2 35 3 20 5 20 % idle time: 11 80 24 29 38 34 30 20 32 67 27 64 26 37 37 total # scans: 208 28 225 133 193 133 223 174 188 73 236 100 177 167 161 # scans/hour : 8.7 1.2 9.4 5.6 8.1 5.6 9.3 7.3 7.9 3.1 9.9 4.2 7.4 7.0 6.7 Avg scan (sec): 106 471 150 291 203 252 148 256 250 337 123 259 244 278 240 Total GBytes: 173 103 266 305 309 264 261 351 370 193 229 204 340 366 267 Total GB(M5): 176 105 270 310 314 268 265 356 376 196 233 207 346 372 272 # of tapes : .4 1.0 .6 2.6 .7 .6 2.2 .8 .8 .5 .5 .5 .8 .8 tape change times (hhmm): 0000 0000 0000 0325 0000 0000 0221 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 1200 0000 0000 1518 0000 0000 0000 0000 0000 0000 0000 Total number of tapes: 12.5 Total GBytes (M5) recorded: 3801.6 # OF OBSERVATIONS BY BASELINE | Ap Sm 15 Ft Gc Ho Kb Nt Ny Gg Sv Tc Ur Wz StnTotal ---------------------------------------------------------------------- Ap|208 12 135 46 89 3 49 58 86 47 92 12 40 57 726 Sm| 28 8 10 10 2 4 21 15 6 21 2 16 17 144 15| 225 36 111 23 73 42 85 47 79 20 45 50 754 Ft| 133 18 8 3 40 21 14 32 55 9 31 323 Gc| 193 9 103 67 135 22 119 3 79 77 842 Ho| 133 70 6 6 1 5 38 38 2 211 Kb| 223 46 91 6 107 0 109 60 721 Nt| 174 92 8 120 9 77 133 719 Ny| 188 13 157 5 96 112 914 Gg| 73 16 0 0 8 188 Sv| 236 6 110 132 996 Tc| 100 0 7 157 Ur| 177 74 693 Wz| 167 760 Number of 2-station scans: 291 Number of 3-station scans: 142 Number of 4-station scans: 54 Number of 5-station scans: 43 Number of 6-station scans: 38 Number of 7-station scans: 39 Number of 8-station scans: 17 Number of 9-station scans: 18 Number of 10-station scans: 2 Number of 11-station scans: 0 Number of 12-station scans: 0 Number of 13-station scans: 0 Number of 14-station scans: 0 Total # of scans, observations: 644 4074 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: ALGOPARK DSS15 GILCREEK HOBART26 NOTO NYALES20 GGAO7108 SVETLOE TIGOCONC URUMQI WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 80.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 80.0 MHz rms spanned bw= 30.2 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 Recording mode setup for: CRIMEA FORTLEZA KASHIM34 Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 135.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 80.0 MHz rms spanned bw= 30.2 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 =========================================================== Monitoring Sources Source Min Max Actual Num #Scans 0405-385 3.00 100.00 .15 6 6 1034-293 3.00 100.00 .52 21 21 1519-273 3.00 100.00 1.91 78 32 1622-253 5.00 100.00 .52 21 19 Total 3.09 126 78 =========================================================== Minor Options Option Norm Wt Aux_Parm Astro Abs 5.00 BegScan Rel 1.00 EndScan Rel 1.00 NumObs Rel 5.00 StatIdle Abs 1.00 StatWt Abs 3.00 FFFFF FFFFT FTFF =========================================================== Major Options SkyCov Yes Min_Between 20 Best% 75.0 Last_Hrs 24.00 Add_ps 30.00 Obs_Wts SNRwt =========================================================== Tape types ID Station Tape length Density Passes Ap ALGOPARK 17400feet (Thin ) 56250 (HIGH ) 12 Sm CRIMEA 8700feet (Thick ) 33333 (Low ) 12 15 DSS15 17400feet (Thin ) 56250 (HIGH ) 12 Ft FORTLEZA 8700feet (Thick ) 33333 (Low ) 12 Gc GILCREEK 17400feet (Thin ) 56250 (HIGH ) 12 Ho HOBART26 17400feet (Thin ) 56250 (HIGH ) 12 Kb KASHIM34 8700feet (Thick ) 33333 (Low ) 12 Nt NOTO 17400feet (Thin ) 56250 (HIGH ) 12 Ny NYALES20 17400feet (Thin ) 56250 (HIGH ) 12 Gg GGAO7108 17400feet (Thin ) 56250 (HIGH ) 12 Sv SVETLOE 17400feet (Thin ) 56250 (HIGH ) 12 Tc TIGOCONC 17400feet (Thin ) 56250 (HIGH ) 12 Ur URUMQI 17400feet (Thin ) 56250 (HIGH ) 12 Wz WETTZELL 17400feet (Thin ) 56250 (HIGH ) 12 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 3) S-band (margin 3) Ap Sm 15 Ft Gc Ho Kb Nt Ny Gg Sv Tc Ur Ap Sm 15 Ft Gc Ho Kb Nt Ny Gg Sv Tc Ur Sm 25 Sm 22 15 25 25 15 22 22 Ft 25 25 25 Ft 22 22 22 Gc 25 25 25 25 Gc 22 22 22 22 Ho 25 25 25 25 25 Ho 22 22 22 22 22 Kb 25 25 25 25 25 25 Kb 22 22 22 22 22 22 Nt 25 25 25 25 25 25 25 Nt 22 22 22 22 22 22 22 Ny 25 25 25 25 25 25 25 25 Ny 22 22 22 22 22 22 22 22 Gg 18 18 18 18 18 18 18 18 18 Gg 15 15 15 15 15 15 15 15 15 Sv 25 25 25 25 25 25 25 25 25 18 Sv 22 22 22 22 22 22 22 22 22 15 Tc 19 19 19 19 19 19 19 19 19 18 19 Tc 16 16 16 16 16 16 16 16 16 16 16 Ur 25 25 25 25 25 25 25 25 25 18 25 19 Ur 22 22 22 22 22 22 22 22 22 15 22 16 Wz 25 25 25 25 25 25 25 25 25 18 25 19 25 Wz 22 22 22 22 22 22 22 22 22 15 22 16 22