IVS-T2087 (International VLBI Service - Terrestical Reference Frame Observations) 2012 Nov.13-14 doy 318-319 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2012:318:17h30 UT Nominal End Time: 2012:319:17h30 UT Duration: 24.0 hr Correlator: HAYS skedfile: t2087.skd Participating stations: ====================== AIRA CHICHI10 CRIMEA DSS13 FORTLEZA KOKEE KASHIM11 KOGANEI KUNMING NYALES20 TIGOCONC TSUKUB32 URUMQI 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 15 sec. and the most recent source flux models are included. SNR goals are around 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: t2087 =========================================================== ----- Parameter listing -------------------------------------- Experiment: T2087 Description IVS-T2.087 Scheduler: IGGB/Muesk Correlator: HAYS Start: 2012-318-17:30:00 End: 2012-319-17:30:01 Current yyyyddd: 2012318 (2012.87) ( 16245 MJD, TUES 13NOV.) =========================================================== 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 ./t2087.skd for experiment T2087 Source Start DURATIONS name yyddd-hhmmss Ai Cc Sm 13 Ft K1 Kk Km Kg Ny Tc Ts Ur Wz 0059+581 12318-173000| 237 239 239 114 22 98 127 15 69 | 1741-038 12318-173000| 44 449 449 378| 4C39.25 12318-173448| 55 55 38 24 30 15 23 24 15 23 | Last observations 3C418 12319-171748| 720 93 720 291 551 310| 0607-157 12319-172027| 375 375 163 97 146 19 140 | 1124-186 12319-172323| 87 342 342 | 1156+295 12319-172613| 56 56 43 | 2234+282 12319-172743| 41 75 75 71| 0537-441 12319-172805| 34 34 16 | 0235+164 12319-172832| 62 62 | 1034-293 12319-172941| 15 15 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 2.8 Min = 0.0 Max = 80.0 (Baseline 13-Km on 0607-157) RMS = 7.0 Total time: 1440 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Sm=CRIMEA 13=DSS13 Ft=FORTLEZA K1=KASHIM11 Kk=KOKEE Km=KUNMING Kg=KOGANEI Ny=NYALES20 Tc=TIGO Ts=TSUKUB32 Ur=URUMQI Wz=WETTZELL Ai Cc Sm 13 Ft K1 Kk Km Kg Ny Tc Ts Ur Wz Avg % obs. time: 61 59 42 21 63 57 40 16 50 39 65 12 33 32 42 % cal. time: 2 2 2 3 2 3 3 4 4 3 2 5 3 3 3 % slew time: 8 7 29 43 25 10 15 36 11 17 2 21 34 9 20 % idle time: 27 31 26 32 10 29 41 43 34 41 30 61 29 55 35 total # scans: 212 208 185 280 148 270 226 325 309 251 140 396 293 250 249 # scans/hour : 9 9 8 12 6 11 9 14 13 10 6 17 12 10 10 Avg scan (sec): 250 245 198 64 368 182 153 42 141 133 400 27 97 112 171 # 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: 954 918 661 323 980 883 624 244 782 601 1008 189 513 504 656 Total GB(M5): 848 816 587 288 871 784 555 217 695 534 896 168 456 448 583 Total GBytes (M5) recorded: 8163.4 # OF OBSERVATIONS BY BASELINE | Ai Cc Sm 13 Ft K1 Kk Km Kg Ny Tc Ts Ur Wz StnTotal -------------------------------------------------------------------------------- Ai| 171 64 39 0 178 73 142 174 78 0 186 122 68 1295 Cc| 62 44 0 172 80 129 168 67 0 187 112 59 1251 Sm| 52 22 71 40 140 82 128 8 110 142 136 1057 13| 81 63 145 91 93 125 78 133 93 111 1148 Ft| 1 30 5 2 33 108 2 14 49 347 K1| 101 168 243 99 1 257 152 82 1588 Kk| 101 128 96 35 156 92 74 1151 Km| 203 161 0 263 247 157 1807 Kg| 125 1 293 180 99 1791 Ny| 16 162 184 175 1449 Tc| 1 0 23 271 Ts| 223 140 2113 Ur| 161 1722 Wz| 1334 Total # of scans, observations: 704 9162 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CRIMEA KOKEE KUNMING NYALES20 TIGOCONC URUMQI 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 DSS13 FORTLEZA KASHIM11 KOGANEI TSUKUB32 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 ===========================================================