IVS-T2088 (International VLBI Service - Terrestical Reference Frame Observations) 2013 Feb,20-21 doy 050-051 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2013:050:17h30 UT Nominal End Time: 2013:051:17h30 UT Duration: 24.0 hr Correlator: BONN skedfile: t2088.skd Participating stations: ====================== AIRA CHICHI10 FORTLEZA HARTRAO KASHIM11 KOKEE KOGANEI MEDICINA NYALES20 OHIGGINS ONSALA60 TIGOCONC TSUKUB32 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 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: t2088 =========================================================== Experiment: T2088 Description IVS-T2.088 Scheduler: IGGB/Muesk Correlator: HAYS Start: 2013-050-17:30:00 End: 2013-051-17:30:01 Current yyyyddd: 2013050 (2013.14) ( 16343 MJD, TUES 19FEB.) =========================================================== 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 /usr/local/soft/sked/schedules/t2088.skd for experiment T2088 Source Start DURATIONS name yyddd-hhmmss Ai Cc Ft Hh K1 Kk Kg Mc Ny Oh On Tc Ts Vs Vm Wf Wz 0059+581 13050-173000| 143 63 162 162 160 92| 0537-441 13050-173000| 172 148 179 179 | 1741-038 13050-173000| 186 186 57 186 24 | 1144-379 13050-173124| 43 43 | OJ287 13050-173530| 376 384 336 192 345 138 406 21 686 686 222| =========================================================== Last observations 3C418 13051-170028| 549 431 549 508 472 404| 1741-038 13051-171621| 320 443 443 388 | CTA26 13051-171947| 29 31 31 22| 1144-379 13051-172345| 359 359 | 1104-445 13051-172446| 299 299 38 | 1424-418 13051-172547| 143 143 | 1034-293 13051-172600| 39 39 | 1156+295 13051-172601| 79 79| 0727-115 13051-172635| 69 43 69 | 1255-316 13051-172720| 116 116 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 1.2 Min = 0.0 Max = 54.5 (Baseline Mc-Ny on CTA26 ) RMS = 4.7 Total time: 1439 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Ft=FORTLEZA Hh=HARTRAO K1=KASHIM11 Kk=KOKEE Kg=KOGANEI Mc=MEDICINA Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Tc=TIGO Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Wf=WESTFORD Wz=WETTZELL Ai Cc Ft Hh K1 Kk Kg Mc Ny Oh On Tc Ts Vs Vm Wf Wz Avg % obs. time: 58 60 53 40 60 54 58 49 41 35 54 50 35 54 46 49 35 49 % cal. time: 2 2 1 1 2 2 3 2 2 1 2 1 4 1 1 2 2 2 % slew time: 5 4 20 31 7 14 8 26 14 7 13 2 19 5 7 9 7 12 % idle time: 34 33 25 27 30 29 31 22 42 56 30 45 41 38 45 38 54 37 total # scans: 144 132 123 128 199 207 218 190 213 86 171 110 363 104 126 184 199 170 # scans/hour : 6 6 5 5 8 9 9 8 9 4 7 5 15 4 5 8 8 7 Avg scan (sec): 350 392 370 267 261 224 228 223 168 348 274 393 83 449 313 230 153 277 # data tracks: 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 Total GBytes: 906 930 818 614 935 833 896 762 643 539 842 778 541 840 711 761 549 759 Total GB(M5): 806 827 727 546 832 741 797 678 571 479 749 691 481 747 632 676 488 675 Total GBytes (M5) recorded: 11467.6 # OF OBSERVATIONS BY BASELINE | Ai Cc Ft Hh K1 Kk Kg Mc Ny Oh On Tc Ts Vs Vm Wf Wz StnTotal ----------------------------------------------------------------------------------------------- Ai| 109 0 12 97 64 99 35 47 0 39 0 124 83 54 28 36 827 Cc| 0 12 102 64 98 34 45 0 38 0 112 78 54 27 34 807 Ft| 41 5 18 5 35 29 20 20 48 10 0 0 59 29 319 Hh| 13 0 13 36 25 48 25 21 18 11 5 23 34 337 K1| 100 174 68 86 0 78 0 186 73 75 58 70 1185 Kk| 106 52 85 6 61 36 133 49 50 70 57 951 Kg| 70 90 0 80 0 201 72 72 58 72 1210 Mc| 144 1 139 8 94 32 39 101 167 1055 Ny| 0 144 6 127 41 54 121 150 1194 Oh| 0 30 3 0 0 1 1 110 On| 1 100 37 45 94 136 1037 Tc| 1 0 0 33 7 191 Ts| 89 115 78 97 1488 Vs| 46 23 34 668 Vm| 34 38 681 Wf| 106 914 Wz| 1068 Total # of scans, observations: 724 7021 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 HARTRAO KASHIM11 KOKEE KOGANEI NYALES20 TIGOCONC TSUKUB32 VERAMZSW WESTFORD 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: FORTLEZA MEDICINA OHIGGINS ONSALA60 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 ===========================================================