IVS-T2123 (International VLBI Service - Terrestical Reference Frame Observations) 2018 Feb.13-14 doy 044-045 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2018:044:17h30 UT Nominal End Time: 2018:045:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations(19) ====================== Sm=CRIMEA 13=DSS13 Ht=HART15M Ho=HOBART26 Is=ISHIOKA Kb=KASHIM34 K1=KASHIM11 Ke=KATH12M Mc=MEDICINA Mh=METSAHOV Nt=NOTO Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kv=SEJONG Sv=SVETLOE Vm=VERAMZSW Wz=WETTZELL Yg=YARRA12M 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 15 min COMMENTS ======== 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. We have to vacate some satellite passages on OHIG station. That produce several observing gaps during this 24 hours. Session Notes for session: t2123 =========================================================== Experiment: T2123 Description IVS-T2.123 Scheduler: IGGB/Muesk Correlator: BONN Start: 2018-044-17:30:00 End: 2018-045-17:30:00 Current yyyyddd: 2018044 (2018.12) ( 18163 MJD, TUES 13FEB.) =========================================================== First observations Observation listing from file t2123.skd for experiment T2123 Source Start DURATIONS name yyddd-hhmmss Sm 13 Ht Ho Is Kb K1 Ke Mc Mh Nt Ny Oh On Kv Sv Vm Wz Yg 0003-066 18044-173000| 460 434 460 | OJ287 18044-173000| 250 228 135 82 269 427 253 748 188 102 299 272 56 748 214 421| 0955+476 18044-173546| 380 453 298 301 192 290 453 114 206 | Last observations 0537-441 18045-164230| 270 459 459 | 0552+398 18045-171722| 119 99 537 537 268 396 | 0537-441 18045-171829| 274 122 274 219| 0718+793 18045-171847| 367 214 272 183 281 367 107 181 | 1424-418 18045-172358| 30 66 81 81| NRAO150 18045-172452| 20 20 20 | 2113+293 18045-172458| 104 127 127 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.5 Min = 0.0 Max = 90.0 (Baseline Ht-Ny on 1741-038) RMS = 2.7 Total time: 1437 minutes ( 24.0 hours). Key: Sm=CRIMEA 13=DSS13 Ht=HART15M Ho=HOBART26 Is=ISHIOKA Kb=KASHIM34 K1=KASHIM11 Ke=KATH12M Mc=MEDICINA Mh=METSAHOV Nt=NOTO Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kv=SEJONG Sv=SVETLOE Vm=VERAMZSW Wz=WETTZELL Yg=YARRA12M Sm 13 Ht Ho Is Kb K1 Ke Mc Mh Nt Ny Oh On Kv Sv Vm Wz Yg Avg % obs. time: 59 30 50 51 59 46 66 73 52 53 45 46 18 52 66 28 51 47 67 51 % cal. time: 2 2 2 2 2 2 2 1 2 2 2 2 0 2 2 2 1 2 1 2 % slew time: 24 27 9 24 3 28 5 5 27 13 30 11 3 11 7 31 7 7 4 15 % idle time: 15 40 37 22 35 23 26 20 17 31 22 40 77 34 25 37 40 43 26 33 total # scans: 149 177 142 152 180 184 139 124 184 131 186 183 37 166 134 199 116 183 116 151 # scans/hour : 6 7 6 6 8 8 6 5 8 5 8 8 2 7 6 8 5 8 5 6 Avg scan (sec): 341 144 306 290 282 214 412 508 245 351 208 217 422 271 424 123 381 220 499 307 # Mk5 tracks: 16 32 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.8 0.8 0.7 0.7 0.8 0.6 0.9 1.0 0.7 0.7 0.6 0.6 0.2 0.7 0.9 0.4 0.7 0.6 0.9 0.7 # OF OBSERVATIONS BY BASELINE | Sm 13 Ht Ho Is Kb K1 Ke Mc Mh Nt Ny Oh On Kv Sv Vm Wz Yg Total --------------------------------------------------------------------------------------------------------- Sm| 38 47 7 34 34 15 11 103 52 100 79 2 85 25 95 15 96 12 850 13| 15 26 64 68 30 11 63 37 57 88 15 58 27 77 24 66 7 771 Ht| 35 13 13 7 27 54 34 64 25 26 46 12 44 8 43 35 548 Ho| 47 43 43 98 5 3 8 7 18 2 38 7 20 5 83 495 Is| 168 83 38 34 11 27 50 0 34 74 42 59 31 23 832 Kb| 89 35 34 10 27 50 0 33 74 45 65 32 21 841 K1| 42 14 14 10 26 0 18 97 19 69 10 21 607 Ke| 9 3 9 10 0 6 41 8 14 8 89 459 Mc| 61 144 105 2 113 22 111 10 139 9 1032 Mh| 57 76 0 84 24 72 15 56 4 613 Nt| 87 6 96 14 126 5 149 9 995 Ny| 0 106 35 121 19 93 9 986 Oh| 0 0 2 0 2 6 79 On| 27 107 10 101 9 935 Kv| 24 60 14 26 634 Sv| 13 132 10 1055 Vm| 7 14 427 Wz| 8 992 Yg| 395 Number of 3-station scans: 271 Number of 4-station scans: 114 Number of 5-station scans: 68 Number of 6-station scans: 54 Number of 7-station scans: 32 Number of 8-station scans: 31 Number of 9-station scans: 21 Number of 10-station scans: 16 Number of 11-station scans: 2 Number of 12-station scans: 4 Number of 13-station scans: 2 Number of 16-station scans: 2 Total number of scans: 617 Total number of obs: 6773 Total integrated obs-time: 1421257 Average obs-time: 209.8 Histogram of observation durations =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: CRIMEA HART15M ISHIOKA KASHIM11 KATH12M NOTO NYALES20 SEJONG SVETLOE VERAMZSW WETTZELL YARRA12M Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:1 128 Mbits 64 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 4.00 MHz 1 16(*1) 16 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 for: DSS13 Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:1 256 Mbits 64 MHz 14 2 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 4.00 MHz 1 32(*1) 32 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 19.13 11.48 30.61 Recording mode for: HOBART26 KASHIM34 MEDICINA OHIGGINS ONSALA60 Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:2 128 Mbits 64 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 4.00 MHz 1 16(*2) 32 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 for: METSAHOV Mode Tot.Rate Tot.BandW #BBC #bits Barrel VLBA1:2 128 Mbits 64 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 4.00 MHz 1 16(*2) 32 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 ===========================================================