IVS-T2078 (International VLBI Service - Terrestical Reference Frame Observations) 2011 Oct.11-12 doy 284-285 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: HAYS Participating stations: Code=Station =========== Ai=Aira Cc=CHICHI10 13=DSS13 Ft=FORTLEZA K1=KASHIM11 Km=KUNMING Kg=KOGANEI Kb=KASHIM34 Ts=TSUKUB32 Ur=URUMQI Vm=VERAMZSW Sh=SESHAN25 Ny=NYALES20 Wz=WETTZELL Sm=CRIMEA 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: t2078 =========================================================== Experiment: T2078 Description IVS-T2.078 Scheduler: IGGB/Muesk Correlator: HAYS Start: 2011-284-17:30:00 End: 2011-285-17:30:01 Current yyyyddd: 2011284 (2011.78) ( 15846 MJD, TUES 11OCT.) =========================================================== There are no observations for Kokee and 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 ./t2078.skd for experiment T2078 Source Start DURATIONS name yyddd-hhmmss Ai Cc 13 Ft K1 Kg Km Kb Ny Sh Sm Ts Ur Vm Wz 0229+131 11284-173000| 720 720 668 403 101 60 270 165 720 51 266 720 | 2136+141 11284-173637| 316 107 305 232 316 162| 1803+784 11284-174025| 60 76 40 40 40 76| Last observations 2145+067 11285-172455| 42 42 42 40 40 40| 1144-379 11285-172533| 99 99 | 3C446 11285-172650| 40 40 40 40| 0537-441 11285-172751| 40 40 40 40 40 40 40 | 2121+053 11285-172809| 40 40 | 1921-293 11285-172910| 40 40| =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 3.0 Min = 0.0 Max = 65.5 (Baseline 13-Ur on CTA26 ) RMS = 6.6 Total time: 1440 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 13=DSS13 Ft=FORTLEZA K1=KASHIM11 Kg=KOGANEI Km=KUNMING Kb=KASHIM34 Ny=NYALES20 Sh=SESHAN25 Sm=CRIMEA Ts=TSUKUB32 Ur=URUMQI Vm=VERAMZSW Wz=WETTZELL Ai Cc 13 Ft K1 Kg Km Kb Ny Sh Sm Ts Ur Vm Wz Avg % obs. time: 65 65 18 19 61 55 19 17 44 28 45 16 40 58 38 39 % cal. time: 1 1 3 2 2 3 3 4 3 3 2 4 3 2 2 2 % slew time: 4 4 30 18 7 8 33 42 16 35 25 15 31 8 8 19 % idle time: 29 29 49 60 28 34 43 36 36 33 27 64 25 31 51 39 total # scans: 121 117 224 137 208 239 285 306 231 296 160 311 262 135 204 215 # scans/hour : 5 5 9 6 9 10 12 13 10 12 7 13 11 6 9 9 Avg scan (sec): 461 478 68 123 255 197 58 49 165 82 245 44 133 372 159 192 # 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: 1004 1007 275 303 954 849 299 268 688 435 706 249 628 903 583 610 Total GB(M5): 893 895 244 270 848 755 266 238 611 386 628 221 559 803 519 542 Total GBytes (M5) recorded: 8134.7 # OF OBSERVATIONS BY BASELINE | Ai Cc 13 Ft K1 Kg Km Kb Ny Sh Sm Ts Ur Vm Wz StnTotal ------------------------------------------------------------------------------------- Ai| 110 38 0 105 106 105 115 71 112 60 115 98 84 50 1169 Cc| 38 0 103 102 104 114 70 109 60 114 98 81 49 1152 13| 95 78 93 91 121 121 104 43 122 88 41 90 1163 Ft| 0 0 9 4 61 6 34 6 14 0 67 296 K1| 197 163 204 104 182 74 202 153 124 72 1761 Kg| 191 235 119 209 79 232 176 128 83 1950 Km| 241 141 262 113 243 238 106 111 2118 Kb| 144 263 94 301 208 129 104 2277 Ny| 147 112 146 155 64 161 1616 Sh| 104 264 230 114 107 2213 Sm| 94 115 46 119 1147 Ts| 209 129 105 2282 Ur| 103 122 2007 Vm| 43 1192 Wz| 1283 Total # of scans, observations: 514 11813 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 CRIMEA DSS13 FORTLEZA KASHIM34 KASHIM11 KOGANEI NYALES20 SESHAN25 TSUKUB32 URUMQI VERAMZSW WETTZELL KUNMING 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 ===========================================================