IVS-T2075 (International VLBI Service - Terrestical Reference Frame Observations) 2011 Mar.22-23 doy 081-82 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: see master schedule file Participating stations: Code=Station =================== Ai=AIRA Cc=CHICHI10 Ft=FORTLEZA Hh=HARTRAO Hb=HOBART12 Mh=METSAHOV Ur=URUMQI Tc=TIGOCONC Sm=CRIMEA Ny=NYALES20 Ts=TSUKUB32 Vs=VERAISGK 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 ) COMMENTS ======== DSS15 cannot prticipate; Ishigakijima was scheduled in tag along mode; Session Notes for session: t2075 =========================================================== Experiment: T2075 Description IVS-T2.075 Scheduler: IGGB/Muesk Correlator: BONN Start: 2011-081-17:30:00 End: 2011-082-17:30:01 Current yyyyddd: 2011081 (2011.22) ( 15643 MJD, TUES 22MAR.) =========================================================== 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 1.5 hour period. =========================================================== First observations Observation listing from file t2075.skd for experiment T2075 Source Start DURATIONS name yyddd-hhmmss Ai Cc Sm Ft Hb Mh Ny Tc Ts Ur Vs Wz 0537-441 11081-173000| 64 64 | OJ287 11081-173000| 276 303 198 303 162 40 66 303 160| 1424-418 11081-173144| 86 86 | Last observations OJ287 11082-171304| 266 266 | 2229+695 11082-171544| 720 428 720 656| 0537-441 11082-171604| 64 64 | 3C446 11082-172029| 245 245 | 0119+115 11082-172103| 183 183 | 1124-186 11082-172432| 122 122 | 1923+210 11082-172753| 82 82 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 1.8 Min = 0.0 Max = 53.3 (Baseline Ny-Ts on CTA26 ) RMS = 6.0 Total time: 1439 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Sm=CRIMEA Ft=FORTLEZA Hb=HOBART12 Mh=METSAHOV Ny=NYALES20 Tc=TIGO Ts=TSUKUB32 Ur=URUMQI Vs=VERAISGK Wz=WETTZELL Ai Cc Sm Ft Hb Mh Ny Tc Ts Ur Vs Wz Avg % obs. time: 57 54 51 61 46 48 55 57 43 48 22 36 48 % cal. time: 2 2 2 2 2 2 2 2 4 2 1 2 2 % slew time: 5 5 28 28 4 25 11 6 18 24 2 8 14 % idle time: 35 37 18 9 47 24 31 34 34 25 74 53 36 total # scans: 188 187 168 144 146 152 172 134 370 210 82 205 179 # scans/hour : 8 8 7 6 6 6 7 6 15 9 3 9 7 Avg scan (sec): 261 252 263 365 271 271 275 370 100 197 237 152 250 # data tracks: 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 Total GBytes: 885 847 795 947 712 742 851 893 668 744 350 559 749 Total GB(M5): 786 753 707 842 633 660 757 794 594 662 311 497 666 Total GBytes (M5) recorded: 7994.2 # OF OBSERVATIONS BY BASELINE | Ai Cc Sm Ft Hb Mh Ny Tc Ts Ur Vs Wz StnTotal ---------------------------------------------------------------------- Ai| 120 23 0 53 22 27 0 141 64 79 17 546 Cc| 21 0 55 17 20 0 147 52 72 10 514 Sm| 29 11 111 95 9 86 117 17 132 651 Ft| 8 21 27 110 9 20 0 43 267 Hb| 9 10 20 103 27 49 5 350 Mh| 95 9 74 94 14 121 587 Ny| 7 96 112 11 114 614 Tc| 9 0 0 18 182 Ts| 148 57 79 949 Ur| 33 111 778 Vs| 10 342 Wz| 660 Total # of scans, observations: 677 3220 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 CRIMEA FORTLEZA HOBART12 NYALES20 TIGOCONC TSUKUB32 URUMQI VERAISGK 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 Recording mode setup for: METSAHOV Mode Tot.Rate Tot.BandW #chan #bits Barrel VLBA1:2 128.000 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 ===========================================================