IVS-T2126 (International VLBI Service - Terrestical Reference Frame Observations) 2018 JUL,03-04 doy 184-185 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2018:184:17h30 UT Nominal End Time: 2018:185:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations(17) ====================== Ag=AGGO Bd=BADARY Sm=CRIMEA 36=DSS36 Ht=HART15M K1=KASHIM11 Ke=KATH12M Kg=KOGANEI Nt=NOTO Ny=NYALES20 Oh=OHIGGINS Kv=SEJONG Sv=SVETLOE Ur=URUMQI Wz=WETTZELL Yg=YARRA12M 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. Eb=EFLSBERG Ht=HART15M 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: t2126 =========================================================== Experiment: T2126 Description IVS-T2.126 Scheduler: IGGB/Muesk Correlator: BONN Start: 2018-184-17:30:00 End: 2018-185-17:30:01 Current yyyyddd: 2018184 (2018.50) ( 18303 MJD, TUES 3JUL.) =========================================================== First observations Observation listing from file t2126.skd for experiment T2126 Source Start DURATIONS name yyddd-hhmmss Ag Bd Sm 36 Ht K1 Ke Kg Nt Ny Oh Kv Sv Ur Wz Yg Zc 0059+581 18184-173000| 196 196 196 | 0727-115 18184-173000| 583 583 | 1546+027 18184-173000| 162 678 282 678 372 676 249 402 397 556 204| 0338-214 18185-004641| 643 181 643 | Last observations 0727-115 18185-170555| 582 582 | 1149-084 18185-171643| 397 397 | 0133+476 18185-171821| 50 226 225 226 | 0008-264 18185-171838| 210 210 | 3C418 18185-172135| 46 46 | 1351-018 18185-172154| 35 28 35 29| 2335-027 18185-172337| 376 376 | 1144-379 18185-172411| 68 68 | 1034-293 18185-172603| 117 117 | 0059+581 18185-172613| 25 58 51 25 58 37 25| =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.8 Min = 0.0 Max = 60.0 (Baseline Ag-36 on 1546+027) RMS = 3.0 Total time: 1437 minutes ( 24.0 hours). Key: Ag=AGGO Bd=BADARY Sm=CRIMEA 36=DSS36 Ht=HART15M K1=KASHIM11 Ke=KATH12M Kg=KOGANEI Nt=NOTO Ny=NYALES20 Oh=OHIGGINS Kv=SEJONG Sv=SVETLOE Ur=URUMQI Wz=WETTZELL Yg=YARRA12M Zc=ZELENCHK Ag Bd Sm 36 Ht K1 Ke Kg Nt Ny Oh Kv Sv Ur Wz Yg Zc Avg % obs. time: 59 39 51 32 59 61 60 62 47 49 42 60 36 50 42 61 37 50 % cal. time: 2 3 2 2 2 3 2 2 3 3 1 2 3 2 3 2 3 2 % slew time: 2 38 30 27 15 8 8 7 35 13 7 11 40 26 8 8 40 20 % idle time: 36 20 16 38 23 28 28 27 14 34 49 26 20 21 46 28 20 28 total # scans: 132 248 181 186 203 222 213 209 232 222 91 210 261 207 244 205 257 207 # scans/hour : 6 10 8 8 8 9 9 9 10 9 4 9 11 9 10 9 11 9 Avg scan (sec): 384 135 242 149 252 235 245 257 174 191 395 247 118 206 149 256 123 220 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total GB(M5): 811 535 702 442 819 835 835 861 645 680 575 829 494 684 580 839 504 686 # OF OBSERVATIONS BY BASELINE | Ag Bd Sm 36 Ht K1 Ke Kg Nt Ny Oh Kv Sv Ur Wz Yg Zc Total ----------------------------------------------------------------------------------------------- Ag| 0 4 21 58 0 0 0 13 5 35 0 5 0 6 0 5 152 Bd| 63 33 27 55 28 57 73 86 0 66 121 130 97 23 122 981 Sm| 9 39 16 11 22 98 97 2 31 91 89 95 10 122 799 36| 18 32 67 31 9 14 26 33 15 21 9 52 17 407 Ht| 5 23 9 59 16 23 10 38 35 44 35 47 486 K1| 54 177 12 39 0 139 28 42 21 40 24 684 Ke| 48 10 14 0 44 18 25 10 150 13 515 Kg| 17 36 0 124 31 43 22 36 27 680 Nt| 101 5 30 129 82 168 8 140 954 Ny| 0 45 137 114 137 14 97 952 Oh| 0 1 0 0 6 0 98 Kv| 40 52 36 45 39 734 Sv| 104 169 11 177 1115 Ur| 103 24 108 972 Wz| 8 142 1067 Yg| 12 474 Zc| 1092 Number of 2-station scans: 567 Number of 3-station scans: 204 Number of 4-station scans: 108 Number of 5-station scans: 53 Number of 6-station scans: 49 Number of 7-station scans: 32 Number of 8-station scans: 26 Number of 9-station scans: 20 Number of 10-station scans: 7 Number of 11-station scans: 7 Number of 13-station scans: 1 Number of 14-station scans: 1 Total number of scans: 1075 Total number of obs: 6081 Total integrated obs-time: 952895 Average obs-time: 156.7 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: AGGO BADARY CRIMEA HART15M KASHIM11 KATH12M KOGANEI NOTO NYALES20 SEJONG SVETLOE URUMQI WETTZELL YARRA12M 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: DSS36 OHIGGINS 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 ===========================================================