IVS-T2102 (International VLBI Service - Terrestical Reference Frame Observations) 2015 Feb,17-18 doy 048-049 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2015:048:17h30 UT Nominal End Time: 2015:049:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations (19): ====================== Ai=AIRA Cc=CHICHI10 Sm=CRIMEA Hh=HARTRAO Ht=HART15M Kb=KASHIM34 K1=KASHIM11 Km=KUNMING Kg=KOGANEI Mc=MEDICINA Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Sv=SVETLOE Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Wz=WETTZELL Ys=YEBES40M 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 24 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 Session Notes for session: t2102 =========================================================== Experiment: T2102 Description IVS-T2.102 Scheduler: IGGB/Muesk Correlator: BONN Start: 2015-048-17:30:00 End: 2015-049-17:30:01 Current yyyyddd: 2015048 (2015.13) ( 17071 MJD, TUES 17FEB.) =========================================================== 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 t2102.skd for experiment T2102 Source Start DURATIONS name yyddd-hhmmss Ai Cc Sm Hh Ht Kb K1 Km Kg Mc Ny Oh On Sv Ts Vs Vm Wz Ys 0016+731 15048-173000| 574 115 720 145 720 511 431 720 173 96 286 501| 0454-234 15048-173000| 164 133 164 | 0552+398 15048-173000| 288 289 536 536 | Last observations 1424-418 15049-172042| 138 145 15 61 60 15 145 | 0458-020 15049-172136| 78 78 71 | 0059+581 15049-172205| 278 254 112 289 59 316 162 316| 1741-038 15049-172343| 112 17 112 112 15 | 0454-234 15049-172453| 164 132 164 | 0017+200 15049-172520| 118 95 118 | 1406-267 15049-172532| 155 155 91 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 1.0 Min = 0.0 Max = 144.0 (Baseline Hh-Ts on 0437-454) RMS = 3.7 Total time: 1438 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Sm=CRIMEA Hh=HARTRAO Ht=HART15M Kb=KASHIM34 K1=KASHIM11 Km=KUNMING Kg=KOGANEI Mc=MEDICINA Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Sv=SVETLOE Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Wz=WETTZELL Ys=YEBES40M Ai Cc Sm Hh Ht Kb K1 Km Kg Mc Ny Oh On Sv Ts Vs Vm Wz Ys Avg % obs. time: 63 60 57 54 46 38 63 35 61 53 51 41 59 26 30 64 56 35 51 50 % cal. time: 2 2 2 2 2 3 2 3 2 2 2 1 2 2 3 1 1 2 2 2 % slew time: 5 5 27 35 10 35 5 25 6 26 12 4 11 35 13 5 6 8 22 16 % idle time: 29 32 14 9 41 23 29 36 31 18 34 52 26 35 53 29 35 54 24 32 total # scans: 155 149 152 159 167 251 142 223 150 173 186 102 145 212 264 103 104 199 171 168 # scans/hour : 6 6 6 7 7 10 6 9 6 7 8 4 6 9 11 4 4 8 7 7 Avg scan (sec): 350 349 322 290 240 131 382 137 351 266 236 350 354 107 97 532 469 153 258 282 # data tracks: 16 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 16 Total TBytes: 1.0 0.9 0.9 0.8 0.7 0.6 1.0 0.5 0.9 0.8 0.8 0.6 0.9 0.4 0.5 1.0 0.9 0.5 0.8 0.8 # OF OBSERVATIONS BY BASELINE | Ai Cc Sm Hh Ht Kb K1 Km Kg Mc Ny Oh On Sv Ts Vs Vm Wz Ys Total --------------------------------------------------------------------------------------------------------- Ai| 106 25 3 4 67 64 55 59 21 30 0 27 32 70 61 68 25 19 736 Cc| 22 3 4 64 61 47 57 20 25 0 24 25 67 64 66 23 18 696 Sm| 25 28 65 50 90 53 124 104 2 106 114 68 28 27 116 110 1157 Hh| 157 13 2 32 6 23 14 99 16 27 17 4 1 31 34 507 Ht| 15 4 37 7 24 15 99 19 30 19 5 1 32 37 537 Kb| 92 166 102 70 91 3 61 94 246 45 40 76 59 1369 K1| 73 118 53 64 0 50 63 95 56 44 54 43 986 Km| 83 92 97 1 77 116 172 48 34 97 82 1399 Kg| 54 73 0 53 71 106 56 41 58 45 1042 Mc| 126 1 114 136 72 28 24 153 144 1279 Ny| 0 107 160 93 27 28 133 116 1303 Oh| 0 0 3 0 0 2 4 214 On| 119 62 29 29 113 108 1114 Sv| 99 28 30 163 122 1429 Ts| 47 39 80 61 1416 Vs| 52 28 20 626 Vm| 26 23 573 Wz| 135 1345 Ys| 1180 Total number of scans: 635 Total number of obs: 9454 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 CRIMEA HARTRAO HART15M KASHIM11 KUNMING KOGANEI NYALES20 SVETLOE TSUKUB32 VERAMZSW YEBES40M Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:1 128 Mbits 64 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 1-bit channels recorded per sub-pass X S Total 10.00 6.00 16.00 Recording mode setup for: KASHIM34 MEDICINA OHIGGINS ONSALA60 VERAISGK WETTZELL Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:2 128 Mbits 64 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 1-bit channels recorded per sub-pass X S Total 10.00 6.00 16.00 ===========================================================