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 Ts Ur Wz 1057-797 05354-173000| 195 195 | 1611+343 05354-173000| 40 88 720 677 720 720 504 389| 1357+769 05354-173447| 100 126 141 308 118 308 | 0059+581 05354-174035| 40 40 | 0454-234 05354-174041| 40 40 40 | 0552+398 05354-174127| 40 40 40| =========================================================== Last observations 0003-066 05355-170824| 86 84 45 117 117| 1034-293 05355-170910| 40 40 | 2145+067 05355-171131| 120 187 84 187 153| 0607-157 05355-171343| 98 40 40 98 | 1741-038 05355-171345| 40 40 438 438 | 2243-123 05355-171447| 40 40 40| 0458-020 05355-171712| 193 193 163 | 0119+041 05355-171722| 130 66 130| 1958-179 05355-171902| 40 55 55 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 2.6 Min = .0 Max = 72.0 (Baseline Kb-Sv on 0727-115) RMS = 5.4 Total time: 1429 minutes ( 23.8 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 Ts=TSUKUB32 Ur=URUMQI Wz=WETTZELL Ap Sm 15 Ft Gc Ho Kb Nt Ny Gg Sv Tc Ts Ur Wz Avg % obs. time: 24 13 36 49 48 45 40 51 54 34 35 36 36 48 53 40 % cal. time: 2 0 2 1 2 1 2 1 2 0 2 1 2 2 2 2 % slew time: 59 4 33 23 13 26 31 27 11 3 37 3 12 22 6 21 % idle time: 13 81 27 26 35 27 24 19 31 61 24 58 48 26 37 36 total # scans: 217 33 222 133 197 139 242 170 193 80 241 99 255 191 177 172 # scans/hour : 9.1 1.4 9.3 5.6 8.3 5.8 10.2 7.1 8.1 3.4 10.1 4.2 10.7 8.0 7.4 7.2 Avg scan (sec): 95 355 139 317 209 278 144 258 242 370 125 313 121 216 258 229 Total GBytes: 163 92 244 332 324 305 276 346 367 233 238 244 244 325 360 273 Total GB(M5): 165 93 247 338 329 310 280 351 373 236 242 248 248 330 365 278 # of tapes : .4 .8 .5 3.0 .7 .7 2.3 .8 .8 .5 .5 .6 .5 .8 .8 tape change times (hhmm): 0000 0000 0000 0151 0000 0000 0331 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0927 0000 0000 1354 0000 0000 0000 0000 0000 0000 0000 0000 Total number of tapes: 13.8 Total GBytes (M5) recorded: 4163.4 # OF OBSERVATIONS BY BASELINE | Ap Sm 15 Ft Gc Ho Kb Nt Ny Gg Sv Tc Ts Ur Wz StnTotal -------------------------------------------------------------------------- Ap|217 4 146 47 91 5 59 38 78 46 78 17 62 45 53 769 Sm| 33 3 10 6 0 7 22 8 7 19 0 7 14 25 132 15| 222 29 105 21 77 32 77 41 78 18 78 45 46 796 Ft| 133 8 5 1 32 14 17 25 49 2 8 23 270 Gc| 197 13 108 51 137 27 118 1 108 88 80 941 Ho| 139 71 7 11 1 10 37 75 41 5 302 Kb| 242 43 97 8 113 1 232 111 56 984 Nt| 170 78 13 113 7 47 70 126 679 Ny| 193 20 152 4 97 104 110 987 Gg| 80 16 1 9 0 13 219 Sv| 241 6 115 124 132 1099 Tc| 99 1 0 4 146 Ts| 255 121 60 1014 Ur| 191 83 854 Wz| 177 816 Total # of scans, observations: 697 5004 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: ALGOPARK DSS15 GILCREEK HOBART26 NOTO NYALES20 GGAO7108 SVETLOE TIGOCONC TSUKUB32 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 .26 13 13 1034-293 3.00 100.00 .90 45 27 1519-273 3.00 100.00 2.20 110 34 1622-253 5.00 100.00 .58 29 17 Total 3.94 197 91 =========================================================== 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 FTFFF =========================================================== 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 Ts TSUKUB32 17400feet (Thin ) 56250 (HIGH ) 12 Ur URUMQI 17400feet (Thin ) 56250 (HIGH ) 12 Wz WETTZELL 17400feet (Thin ) 56250 (HIGH ) 12 ===========================================================