IVS-T2073 (International VLBI Service - Terrestical Reference Frame Observations) 2010 Nov. 16-17 doy 320-321 Institute for Geodesy and Geoinformation (IGG) of the University of Bonn, Germany Nominal Start Time: 17h30 UT Nominal End Time: 17h30 UT Duration: 24.0 hr Correlator: HAYS Participating stations: Code=Station =================== Ai=AIRA Cc=CHICHI10 Hh=HARTRAO Hb=HOBART12 Ho=HOBART26 Kb=KASHIM34 Kk=KOKEE Tc=TIGO Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW 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 the last updated SKED version using the EUR-SX band and the 64-16(EU-T2) EURSX-C-4 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 ) 75% 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 ) Session Notes for session: t2073 =========================================================== Experiment: T2073 Description IVS-T2.073 Scheduler: IGGB/Muesk Correlator: HAYST Start: 2010-320-17:30:00 End: 2010-321-17:30:01 Current yyyyddd: 2010320 (2010.88) ( 15517 MJD, TUES 16NOV.) =========================================================== There are no observations for Kokee and Wettzell from 18:20 U.T. to 19:40 U.T. Kokee and Wettzell will participate in the intensive session during this 1.5 hour period. =========================================================== First observations Observation listing from file ./t2073.skd for experiment T2073 Source Start DURATIONS name yyddd-hhmmss Ai Cc Hh Hb Ho Kb Kk Tc Ts Vs Vm 0727-115 10320-173000| 126 127 223 77 40 40 40 228 228| 1741-038 10320-173000| 94 94 | Last observations 1958-179 10321-171614| 720 720 | OJ287 10321-171754| 720 720 720 277 53 299 45 720 | 1156+295 10321-172712| 55 125 47 125| =========================================================== Key: Ai=AIRA Cc=CHICHI10 Hh=HARTRAO Hb=HOBART12 Ho=HOBART26 Kb=KASHIM34 Kk=KOKEE Tc=TIGO Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Ai Cc Hh Hb Ho Kb Kk Tc Ts Vs Vm Avg % obs. time: 64 66 41 57 44 29 44 52 26 65 53 49 % cal. time: 2 2 2 2 2 4 3 2 4 2 2 3 % slew time: 5 6 34 5 31 41 15 6 16 7 9 17 % idle time: 27 25 21 35 22 25 38 39 52 25 35 32 total # scans: 182 199 159 166 206 377 237 161 387 150 189 219 # scans/hour : 8 8 7 7 9 16 10 7 16 6 8 9 Avg scan (sec): 305 285 224 296 186 67 159 280 59 376 241 224 # data tracks: 16 16 16 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 Total GBytes: 1001 1019 642 884 691 453 676 811 410 1015 821 766 Total GB(M5): 889 906 571 786 614 402 601 721 364 902 730 681 Total GBytes (M5) recorded: 7487.2 # OF OBSERVATIONS BY BASELINE | Ai Cc Hh Hb Ho Kb Kk Tc Ts Vs Vm StnTotal ----------------------------------------------------------------- Ai| 158 28 58 82 163 80 0 170 119 94 952 Cc| 28 63 89 174 87 2 181 119 93 994 Hh| 34 43 40 0 88 43 29 24 357 Hb| 126 91 67 24 96 55 43 657 Ho| 125 92 22 130 81 61 851 Kb| 167 6 370 131 178 1445 Kk| 61 168 66 83 871 Tc| 8 0 1 212 Ts| 136 175 1477 Vs| 78 814 Vm| 830 Total # of scans, observations: 633 4730 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 HARTRAO HOBART12 HOBART26 KASHIM34 KOKEE TIGOCONC TSUKUB32 VERAISGK VERAMZSW Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 128.000 Mbits 64.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 16(*2) 32 0.00 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 10.000 6.000 16.000 ===========================================================