IVS-T2128 (International VLBI Service - Terrestical Reference Frame Observations) 2018 Nov.13-14 doy 317-318 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2018:317:17h30 UT Nominal End Time: 2018:318:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations(18) ====================== Bd=BADARY Sm=CRIMEA Eb=EFLSBERG Hh=HARTRAO Kg=KOGANEI Nt=NOTO Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kv=SEJONG Sh=SESHAN25 Sv=SVETLOE Ur=URUMQI Vm=VERAMZSW Ww=WARK12M Wz=WETTZELL Ys=YEBES40M Zc=ZELENCHK 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: t2128 =========================================================== Experiment: T2128 Description IVS-T2.128 Scheduler: IGGB/Muesk Correlator: BONN Start: 2018-317-17:30:00 End: 2018-318-17:30:01 Current yyyyddd: 2018317 (2018.87) ( 18436 MJD, TUES 13NOV.) =========================================================== First observations Observation listing from file t2128.skd for experiment T2128 Source Start DURATIONS name yyddd-hhmmss Bd Sm Eb Hh Kg Nt Ny Oh On Kv Sh Sv Ur Vm Ww Wz Ys Zc 0059+581 18317-173000| 778 778 | 0202+319 18317-173000| 161 646 35 420 403 324 492 646 182 195 377 402 485 195| 1424-418 18317-173000| 381 381 | Last observations 1424-418 18318-164845| 341 341 | 0727-115 18318-171515| 394 394 | 0017+200 18318-171545| 138 454 25 296 679 228 348 593 679 273 138 341 341 138| 2318+049 18318-172231| 52 25 137 79 123 96 60 137 97 52| 0648-165 18318-172716| 46 46 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.9 Min = 0.0 Max = 57.6 (Baseline Eb-Vm on 1741-038) RMS = 2.9 Total time: 1438 minutes ( 24.0 hours). Key: Bd=BADARY Sm=CRIMEA Eb=EFLSBERG Hh=HARTRAO Kg=KOGANEI Nt=NOTO Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kv=SEJONG Sh=SESHAN25 Sv=SVETLOE Ur=URUMQI Vm=VERAMZSW Ww=WARK12M Wz=WETTZELL Ys=YEBES40M Zc=ZELENCHK Bd Sm Eb Hh Kg Nt Ny Oh On Kv Sh Sv Ur Vm Ww Wz Ys Zc Avg % obs. time: 38 51 11 49 63 42 58 38 55 61 53 35 54 60 53 2 52 32 45 % cal. time: 2 2 3 2 2 2 2 1 2 2 2 3 2 2 1 0 2 2 2 % slew time: 32 25 59 32 6 28 10 9 10 8 22 32 20 9 4 0 12 32 20 % idle time: 27 21 26 17 28 28 29 51 32 28 21 29 23 28 41 97 32 33 33 total # scans: 202 147 229 141 170 186 164 91 154 162 174 216 153 154 119 8 168 206 158 # scans/hour : 8 6 10 6 7 8 7 4 6 7 7 9 6 6 5 0 7 9 7 Avg scan (sec): 164 301 41 300 321 193 306 364 308 327 264 140 306 338 381 224 269 134 259 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total GB(M5): 530 709 149 677 874 574 803 530 758 848 735 485 750 832 726 29 722 442 621 # OF OBSERVATIONS BY BASELINE | Bd Sm Eb Hh Kg Nt Ny Oh On Kv Sh Sv Ur Vm Ww Wz Ys Zc Total ---------------------------------------------------------------------------------------------------- Bd| 59 72 21 53 59 84 0 50 42 95 105 101 31 13 4 53 98 940 Sm| 78 32 25 73 53 3 63 28 33 75 58 16 2 4 58 95 755 Eb| 38 18 109 74 7 69 17 37 135 54 11 0 4 95 129 947 Hh| 7 53 24 41 21 8 21 33 33 5 13 3 46 37 436 Kg| 15 36 0 19 90 68 24 45 70 26 1 17 24 538 Nt| 79 1 76 18 41 101 57 11 0 6 122 97 918 Ny| 2 78 30 57 107 85 19 3 3 93 81 908 Oh| 0 0 0 0 0 0 39 0 3 1 97 On| 26 31 90 52 16 3 4 76 70 744 Kv| 56 21 39 85 19 1 13 28 521 Sh| 58 91 24 12 3 36 54 717 Sv| 80 13 2 4 91 136 1075 Ur| 22 6 4 57 79 863 Vm| 33 0 8 17 381 Ww| 0 0 4 175 Wz| 8 5 54 Ys| 83 859 Zc| 1038 Number of 2-station scans: 417 Number of 3-station scans: 132 Number of 4-station scans: 83 Number of 5-station scans: 41 Number of 6-station scans: 34 Number of 7-station scans: 34 Number of 8-station scans: 12 Number of 9-station scans: 10 Number of 10-station scans: 20 Number of 11-station scans: 7 Number of 12-station scans: 4 Number of 13-station scans: 2 Number of 14-station scans: 7 Total number of scans: 803 Total number of obs: 5983 Total integrated obs-time: 1125609 Average obs-time: 188.1 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: BADARY CRIMEA EFLSBERG HARTRAO KOGANEI NOTO NYALES20 SEJONG SESHAN25 SVETLOE URUMQI VERAMZSW WARK12M WETTZELL YEBES40M ZELENCHK 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: 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 ===========================================================