IVS-T2086 (International VLBI Service - Terrestical Reference Frame Observations) 2012 Oct.16-17 doy 290-291 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2012:290:17h30 UT Nominal End Time: 2012:291:17h30 UT Duration: 24.0 hr Correlator: BONN skedfile: t2086.skd Participating stations: ====================== AIRA CHICHI10 CRIMEA FORTLEZA HARTRAO KASHIM11 KOGANEI MATERA METSAHOV NOTO NYALES20 TSUKUB32 URUMQI VERAMZSW WETTZELL ZELENCHK 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: t2086 =========================================================== Experiment: T2086 Description IVS-T2.086 Scheduler: IGGB/Muesk Correlator: BONN Start: 2012-290-17:30:00 End: 2012-291-17:30:01 Current yyyyddd: 2012290 (2012.79) ( 16217 MJD, TUES 16OCT.) =========================================================== 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 ./t2086.skd for experiment T2086 Source Start DURATIONS name yyddd-hhmmss Ai Cc Sm Ft Hh K1 Kg Mh Nt Ny Ts Vm Wz Zc 2145+067 12290-173000| 77 234 169 234 36 62 34 25| 4C39.25 12290-173253| 80 81 33 33 34 13 81 | Last observations 0059+581 12291-172011| 354 352 141 141 160 19 354 | 1923+210 12291-172108| 286 286 135 103 110| CTA26 12291-172329| 101 101 13 | 1611+343 12291-172523| 37 37 16 13| 0106+013 12291-172546| 76 76 13 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 2.5 Min = 0.0 Max = 51.7 (Baseline K1-Kg on 1921-293) RMS = 6.5 Total time: 1436 minutes ( 23.9 hours). Key: Ai=AIRA Cc=CHICHI10 Sm=CRIMEA Ft=FORTLEZA Hh=HARTRAO K1=KASHIM11 Kg=KOGANEI Mh=METSAHOV Nt=NOTO Ny=NYALES20 Ts=TSUKUB32 Vm=VERAMZSW Wz=WETTZELL Zc=ZELENCHK Ai Cc Sm Ft Hh K1 Kg Mh Nt Ny Ts Vm Wz Zc Avg % obs. time: 53 52 44 54 31 48 41 49 27 33 16 51 25 18 39 % cal. time: 2 2 2 1 2 3 3 1 3 3 4 2 3 3 3 % slew time: 6 6 31 20 37 9 10 27 41 15 18 10 10 42 21 % idle time: 38 38 22 24 29 39 45 21 28 49 60 36 60 36 38 total # scans: 191 192 199 120 174 266 287 124 265 234 372 196 271 269 225 # scans/hour : 8 8 8 5 7 11 12 5 11 10 16 8 11 11 9 Avg scan (sec): 238 234 189 386 152 155 123 343 86 120 38 226 81 57 172 # data tracks: 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 Total GBytes: 819 810 676 833 475 741 636 765 412 504 254 798 395 275 600 Total GB(M5): 728 720 601 740 422 659 566 680 366 448 226 709 351 244 533 Total GBytes (M5) recorded: 7461.5 # OF OBSERVATIONS BY BASELINE | Ai Cc Sm Ft Hh K1 Kg Mh Nt Ny Ts Vm Wz Zc StnTotal -------------------------------------------------------------------------------- Ai| 152 34 0 19 145 156 17 35 55 168 144 46 51 1022 Cc| 26 0 15 144 148 14 24 45 175 140 33 37 953 Sm| 78 104 42 46 69 159 123 65 30 159 168 1103 Ft| 81 7 6 57 105 60 11 0 88 74 567 Hh| 16 17 41 132 61 30 15 112 109 752 K1| 246 26 43 68 241 167 54 54 1253 Kg| 26 50 82 259 167 61 65 1329 Mh| 89 81 39 13 97 89 658 Nt| 149 77 31 217 193 1304 Ny| 117 56 163 166 1226 Ts| 184 91 98 1555 Vm| 40 42 1029 Wz| 203 1364 Zc| 1349 Total # of scans, observations: 673 7732 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CRIMEA HARTRAO NYALES20 URUMQI ZELENCHK Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:1 128.000 Mbits 64.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 16(*1) 16 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: CHICHI10 FORTLEZA KASHIM11 KOGANEI NOTO TSUKUB32 VERAMZSW 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 ===========================================================