IVS-T2072 (International VLBI Service - Terrestical Reference Frame Observations) 2010 Oct. 05-06 doy 278-279 Institute for Geodesy and Geoinformation (IGG) of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2010 (master10.txt) 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: t2072 =========================================================== Experiment: T2072 Description IVS-T2.072 Scheduler: IGGB/Muesk Correlator: HAYS Start: 2010-278-17:30:00 End: 2010-279-17:30:01 Current yyyyddd: 2010278 (2010.76) ( 15475 MJD, TUES 5OCT.) =========================================================== There are no observations for NyAlesund from 18:20 U.T. to 19:40 U.T. NyAlesund will participate in the intensive session during this 1.5 hour period. =========================================================== First observations Observation listing from file ./t2072a.skd for experiment T2072 Source Start DURATIONS name yyddd-hhmmss 13 Ai Cc Mc Ny On Sm Tc Ts Ur Vm Vs Ys 0552+398 10278-173000| 52 263 268 76 195 40 64 480 480 | 0133+476 10278-173409| 53 118 246 199 125 246 | 1334-127 10278-173521| 66 176 176| Last observations 3C454.3 10279-172413| 40 40 | 2136+141 10279-172536| 40 65 138 93 40 138 80| 1124-186 10279-172626| 183 183 | CTA26 10279-172720| 53 53 | NRAO150 10279-172847| 40 40| 0454-234 10279-172851| 63 63 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 2.8 Min = 0.0 Max = 80.0 (Baseline Ts-Ys on 0727-115) RMS = 7.4 Key: 13=DSS13 Ai=AIRA Cc=CHICHI10 Mc=MEDICINA Ny=NYALES20 On=ONSALA60 Sm=CRIMEA Tc=TIGO Ts=TSUKUB32 Ur=URUMQI Vm=VERAMZSW Vs=VERAISGK Ys=YEBES40M 13 Ai Cc Mc Ny On Sm Tc Ts Ur Vm Vs Ys Avg % obs. time: 37 50 50 23 36 59 49 55 24 37 60 54 43 44 % cal. time: 3 2 2 3 2 2 2 2 4 3 2 2 3 2 % slew time: 37 6 6 35 15 13 29 6 17 31 7 8 27 19 % idle time: 22 41 41 38 46 25 19 36 53 28 29 36 26 34 total # scans: 262 197 197 266 215 172 169 186 347 254 162 142 227 215 # scans/hour : 11 8 8 11 9 7 7 8 14 11 7 6 9 9 Avg scan (sec): 123 220 219 75 144 295 250 255 60 126 323 328 165 198 # data tracks: 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 Total GBytes: 579 780 777 358 556 914 760 855 374 575 940 839 674 691 Total GB(M5): 515 693 690 318 495 812 676 760 332 511 836 745 599 614 Total GBytes (M5) recorded: 7982.6 # OF OBSERVATIONS BY BASELINE | 13 Ai Cc Mc Ny On Sm Tc Ts Ur Vm Vs Ys StnTotal --------------------------------------------------------------------------- 13| 27 35 78 79 46 29 160 72 46 25 19 71 687 Ai| 164 46 45 42 48 0 172 105 100 97 34 880 Cc| 42 44 39 45 0 180 103 104 90 30 876 Mc| 170 157 147 54 122 154 44 44 213 1271 Ny| 117 107 26 130 145 47 45 144 1099 On| 130 38 91 111 43 38 145 997 Sm| 25 98 127 46 42 128 972 Tc| 9 1 0 0 54 367 Ts| 198 155 122 98 1447 Ur| 86 95 124 1295 Vm| 91 31 772 Vs| 33 716 Ys| 1105 Total # of scans, observations: 661 6242 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 CRIMEA DSS13 MEDICINA NYALES20 ONSALA60 TIGOCONC TSUKUB32 URUMQI VERAISGK VERAMZSW YEBES40M 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 ===========================================================