IVS-T2083 (International VLBI Service - Terrestical Reference Frame Observations) 2012 May, 08/09 doy 129-130 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 skedfile: t2083.skd Participating stations: =========== AIRA BADARY CHICHI10 CRIMEA DSS13 FORTLEZA HARTRAO KSHIM11 KUNMING KOGANEI MEDICINA METSAHOV ONSALA60 NYALES20 TSUKUB32 URUMQI VERAISGK VERAMZSW 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: t2083 =========================================================== Experiment: T2083 Description IVS-T2.083 Scheduler: IGGB/Muesk Correlator: BONN Start: 2012-129-17:30:00 End: 2012-130-17:30:01 Current yyyyddd: 2012129 (2012.35) ( 16056 MJD, TUES 8MAY.) =========================================================== 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 t2083.skd for experiment T2083 Source Start DURATIONS name yyddd-hhmmss 13 Ai Cc Ft Hh K1 Kg Km Mc Mh Ny On Sm Ts Ur Vm Vs Wz 1156+295 12129-173000| 720 720 720 395 52 320 218 455 317 34 148 668 220| 1921-293 12129-173736| 26 20 20 26 | 0727-115 12129-173753| 275 95 53 275 76 32| Last observations 3C345 12130-172131| 226 226 226 122 20 109 | 0133+476 12130-172132| 250 229 250 117| CTA26 12130-172207| 66 66 | 1255-316 12130-172315| 151 169 169 | 1908-201 12130-172435| 97 97 | 0106+013 12130-172524| 21 21 | 0201+113 12130-172650| 40 40 | 1144-379 12130-172708| 47 47 | 0607-157 12130-172754| 20 20 20| 1057-797 12130-172835| 49 49 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 2.3 Min = 0.0 Max = 53.3 (Baseline Ny-Ts on CTA26 ) RMS = 5.8 Total time: 1440 minutes ( 24.0 hours). Key: 13=DSS13 Ai=AIRA Cc=CHICHI10 Ft=FORTLEZA Hh=HARTRAO K1=KASHIM11 Kg=KOGANEI Km=KUNMING Mc=MEDICINA Mh=METSAHOV Ny=NYALES20 On=ONSALA60 Sm=CRIMEA Ts=TSUKUB32 Ur=URUMQI Vm=VERAMZSW Vs=VERAISGK Wz=WETTZELL 13 Ai Cc Ft Hh K1 Kg Km Mc Mh Ny On Sm Ts Ur Vm Vs Wz Avg % obs. time: 18 59 58 33 26 57 47 18 37 39 32 43 42 15 32 53 44 24 38 % cal. time: 3 2 2 2 2 3 3 3 3 1 3 2 2 4 3 2 1 3 2 % slew time: 35 6 5 29 31 8 9 35 29 22 16 15 30 18 31 8 7 10 20 % idle time: 44 32 34 35 40 31 40 42 30 37 48 39 25 62 34 37 47 63 40 total # scans: 244 172 154 181 146 216 268 296 224 127 242 201 194 352 257 137 127 251 210 # scans/hour : 10 7 6 8 6 9 11 12 9 5 10 8 8 15 11 6 5 10 9 Avg scan (sec): 62 297 327 157 154 228 151 52 143 262 115 187 186 37 107 333 298 81 176 # data tracks: 16 16 16 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 16 16 16 Total GBytes: 274 920 907 513 405 886 726 279 578 600 501 676 649 233 495 820 680 367 584 Total GB(M5): 243 818 806 456 360 787 645 248 513 533 445 601 577 207 440 729 605 326 519 Total GBytes (M5) recorded: 9341.6 # OF OBSERVATIONS BY BASELINE | 13 Ai Cc Ft Hh K1 Kg Km Mc Mh Ny On Sm Ts Ur Vm Vs Wz StnTotal ---------------------------------------------------------------------------------------------------- 13| 52 48 103 12 70 82 69 60 35 101 52 43 102 66 32 26 81 1034 Ai| 134 0 14 134 136 111 45 25 66 53 55 155 93 86 63 48 1270 Cc| 0 12 121 125 97 37 21 59 48 49 143 85 85 61 41 1166 Ft| 74 3 3 11 56 27 36 46 34 6 15 0 0 60 474 Hh| 16 18 50 76 43 45 64 77 26 55 13 14 76 685 K1| 198 125 53 31 80 60 65 198 113 114 69 61 1511 Kg| 154 57 35 92 62 69 238 134 122 89 69 1683 Km| 111 62 137 101 123 216 222 78 96 134 1897 Mc| 75 152 165 150 84 118 24 22 191 1476 Mh| 88 78 71 49 73 22 25 90 850 Ny| 142 125 127 151 45 36 167 1649 On| 125 84 113 35 29 165 1422 Sm| 92 130 32 26 153 1419 Ts| 175 127 109 102 2033 Ur| 69 68 141 1821 Vm| 68 27 979 Vs| 26 827 Wz| 1632 Total # of scans, observations: 738 11914 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 CRIMEA DSS13 FORTLEZA HARTRAO KASHIM11 KUNMING KOGANEI MEDICINA NYALES20 ONSALA60 TSUKUB32 URUMQI VERAISGK 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 ===========================================================