IVS-T2074 (International VLBI Service - Terrestical Reference Frame Observations) 2011 Feb.01-02 doy 032-033 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 17h30 UT Nominal End Time: 17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations: Code=Station =================== 13=DSS13 Ai=AIRA Cc=CHICHI10 Hh=HARTRAO Hb=HOBART12 Ho=HOBART26 Kk=KOKEE Ny=NYALES20 Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Ww=WARK12M Wz=WETTZELL 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: t2074 =========================================================== Experiment: T2074 Description IVS-T2.07R4 Scheduler: IGGB/Muesk Correlator: BONN Start: 2011-032-17:30:00 End: 2011-033-17:30:01 Current yyyyddd: 2011032 (2011.09) ( 15594 MJD, TUES 1FEB.) =========================================================== 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 t2074.skd for experiment T2074 Source Start DURATIONS name yyddd-hhmmss 13 Ai Cc Hb Hh Ho Kk Ny Oh Sm Ts Vs Vm Ww Wz 0727-115 11032-173000| 164 146 262 125 93 135 40 251 262 133| 1741-038 11032-173000| 81 81 | 3C418 11032-173230| 226 226 106 | 3C446 11032-173315| 40 121 121| Last observations 1156+295 11033-170802| 87 720 720 720 415 122 720 49 720 | 1044+719 11033-172108| 393 393 | 0059+581 11033-172238| 304 124 304 | 0537-441 11033-172256| 146 52 146 76 | 0235+164 11033-172357| 226 230 230 128| NRAO150 11033-172521| 58 58 | 3C418 11033-172828| 63 63| 2201+315 11033-172903| 40 40 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 2.3 Min = 0.0 Max = 49.7 (Baseline Kk-Ts on 0537-441) RMS = 6.0 Total time: 1440 minutes ( 24.0 hours). Key: 13=DSS13 Ai=AIRA Cc=CHICHI10 Hb=HOBART12 Hh=HARTRAO Ho=HOBART26 Kk=KOKEE Ny=NYALES20 Oh=OHIGGINS Sm=CRIMEA Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Ww=WARK12M Wz=WETTZELL 13 Ai Cc Hb Hh Ho Kk Ny Oh Sm Ts Vs Vm Ww Wz Avg % obs. time: 32 68 67 54 30 43 43 50 45 47 24 62 56 60 38 48 % cal. time: 3 2 2 2 2 2 3 2 2 2 4 2 2 2 2 2 % slew time: 37 4 5 5 34 28 15 12 14 28 18 7 8 5 8 16 % idle time: 27 25 25 38 34 26 38 35 38 23 52 29 34 32 51 34 total # scans: 259 134 141 155 154 197 241 191 158 169 348 131 141 161 201 185 # scans/hour : 11 6 6 6 6 8 10 8 7 7 15 5 6 7 8 8 Avg scan (sec): 106 439 412 303 166 190 156 225 246 239 60 410 341 324 161 251 # data tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total GBytes: 496 1058 1045 847 459 674 676 772 699 726 378 966 864 938 583 746 Total GB(M5): 441 941 928 753 408 599 601 687 622 646 336 859 768 834 519 663 Total GBytes (M5) recorded: 9941.1 # OF OBSERVATIONS BY BASELINE | 13 Ai Cc Hb Hh Ho Kk Ny Oh Sm Ts Vs Vm Ww Wz StnTotal ------------------------------------------------------------------------------------- 13| 52 60 37 7 47 149 91 48 46 139 47 58 49 74 904 Ai| 114 34 14 61 71 51 0 40 121 91 66 50 35 800 Cc| 37 13 65 79 50 0 38 126 90 70 51 33 826 Hb| 15 108 67 8 34 6 83 35 25 107 4 600 Hh| 23 0 40 69 74 24 14 12 12 72 389 Ho| 79 15 41 13 107 56 44 112 4 775 Kk| 80 21 42 171 63 79 78 58 1037 Ny| 3 115 106 38 32 12 140 781 Oh| 15 2 0 0 34 28 295 Sm| 77 32 26 6 131 661 Ts| 117 128 95 86 1382 Vs| 53 45 27 708 Vm| 38 25 656 Ww| 1 690 Wz| 718 Total # of scans, observations: 715 5611 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 CRIMEA DSS13 HARTRAO HOBART12 HOBART26 KOKEE NYALES20 OHIGGINS TSUKUB32 VERAISGK VERAMZSW WARK12M WETTZELL 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 ===========================================================