IVS-T2101 (International VLBI Service - Terrestical Reference Frame Observations) 2014 Dec,16-17 doy 350-351 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2014:350:17h30 UT Nominal End Time: 2014:351:17h30 UT Duration: 24.0 hr Correlator: HAYS Participating stations (15): ====================== Ai=AIRA Cc=CHICHI10 Sm=CRIMEA Hh=HARTRAO K1=KASHIM11 Km=KUNMING Kg=KOGANEI Kk=KOKEE Ny=NYALES20 On=ONSALA60 Sh=SESHAN25 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: t2101 =========================================================== Experiment: T2101 Description IVS-T2.101 Scheduler: IGGB/Muesk Correlator: BONN Start: 2014-350-17:30:00 End: 2014-351-17:30:01 Current yyyyddd: 2014350 (2014.96) ( 17008 MJD, TUES 16DEC.) =========================================================== 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 t2101.skd for experiment T2101 Source Start DURATIONS name yyddd-hhmmss Ai Cc Sm K1 Kk Kg Ny On Sh Sv Ts Vs Vm Wz Ys 0059+581 14350-173000| 207 213 141 205 109 34 15 394 394 | 1751+288 14350-173000| 149 172 172 49 71 168| Last observations 0229+131 14351-172237| 380 38 380 | 0537-441 14351-172317| 354 362 362 | CTA26 14351-172451| 83 83 27 38 77| OJ287 14351-172537| 61 51 61 38 15 | 0454-234 14351-172817| 37 37 15 | 2255-282 14351-172824| 55 26 55| =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 3.2 Min = 0.0 Max = 75.8 (Baseline Ny-Sv on CTA26 ) RMS = 8.4 Total time: 1439 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Sm=CRIMEA K1=KASHIM11 Kk=KOKEE Kg=KOGANEI Ny=NYALES20 On=ONSALA60 Sh=SESHAN25 Sv=SVETLOE Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Wz=WETTZELL Ys=YEBES40M Ai Cc Sm K1 Kk Kg Ny On Sh Sv Ts Vs Vm Wz Ys Avg % obs. time: 63 65 47 54 29 46 40 57 20 15 7 73 73 26 46 44 % cal. time: 2 2 3 2 2 3 3 3 3 3 3 1 2 3 3 3 % slew time: 5 4 38 8 13 8 14 16 29 40 14 7 7 9 29 17 % idle time: 29 28 11 34 54 42 42 24 48 41 75 17 17 61 21 37 total # scans: 165 153 272 212 191 237 273 259 260 301 273 129 137 298 281 229 # scans/hour : 7 6 11 9 8 10 11 11 11 13 11 5 6 12 12 10 Avg scan (sec): 328 364 151 221 133 167 127 188 65 42 22 489 463 74 140 197 # data tracks: 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 Total TBytes: 1.0 1.0 0.7 0.8 0.5 0.7 0.6 0.9 0.3 0.2 0.1 1.1 1.1 0.4 0.7 0.7 # OF OBSERVATIONS BY BASELINE | Ai Cc Sm K1 Kk Kg Ny On Sh Sv Ts Vs Vm Wz Ys Total ------------------------------------------------------------------------------------- Ai| 129 31 122 68 122 40 33 140 42 129 113 86 20 19 1094 Cc| 22 121 75 119 33 26 112 30 128 100 92 14 13 1014 Sm| 31 13 34 141 171 53 198 39 32 28 221 215 1229 K1| 120 197 58 37 150 46 200 87 123 23 23 1338 Kk| 133 81 44 112 57 152 52 74 26 26 1033 Kg| 63 40 179 53 229 89 117 27 27 1429 Ny| 174 71 224 74 30 52 164 164 1369 On| 44 197 44 26 31 206 211 1284 Sh| 72 205 115 89 36 32 1410 Sv| 62 31 42 208 184 1446 Ts| 90 121 33 30 1536 Vs| 75 16 16 872 Vm| 19 20 969 Wz| 255 1268 Ys| 1235 Total number of scans: 658 Total number of obs: 9263 Total integrated obs-time: 1049335 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 CRIMEA KASHIM11 KOKEE KOGANEI NYALES20 SESHAN25 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: 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 ===========================================================