IVS-T2120 (International VLBI Service - Terrestical Reference Frame Observations) 2017 Sept.12-13 doy 255-256 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2017:255:17h30 UT Nominal End Time: 2017:256:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations (18) ====================== Bd=BADARY Sm=CRIMEA Hh=HARTRAO Is=ISHIOKA Kg=KOGANEI Nt=NOTO Ny=NYALES20 On=ONSALA60 Kv=SEJONG Wz=WETTZELL 36=DSS36 Ft=FORTLEZA Kb=KASHIM34 K1=KASHIM11 Mh=METSAHOV Sv=SVETLOE Vm=VERAMZSW 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. Session Notes for session: t2120 =========================================================== Experiment: T2120 Description IVS-T2.120 Scheduler: IGGB/Muesk Correlator: BONN Start: 2017-255-17:30:00 End: 2017-256-17:30:01 Current yyyyddd: 2017255 (2017.70) ( 18009 MJD, TUES 12SEP.) =========================================================== First observations Observation listing from file t2120.skd for experiment T2120 Source Start DURATIONS name yyddd-hhmmss Bd Sm Hh Is Kg Nt Ny On Kv Wz 36 Ft Kb K1 Mh Sv Vm Zc 0048-097 17255-173000| 211 335 88 335 | 0059+581 17255-173000| 272 307 466 272 466 | 1741-038 17255-173000| 117 110 42 140 45 411 411 37 40| 1639-062 17255-173331| 196 171 90 196 82 61 61| Last observations 3C446 17256-163519| 31 203 125 348 20 116 348 42| 0322+222 17256-171323| 312 720 720 172 430 | 0133+476 17256-171418| 628 284 325 628 187 193| 0454-234 17256-171812| 305 29 181 305 | 2229+695 17256-172131| 195 134 222 222 118 90 90| 1921-293 17256-172755| 20 20 20 20| =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.8 Min = 0.0 Max = 75.8 (Baseline Kb-Sv on 0727-115) RMS = 3.3 Total time: 1438 minutes ( 24.0 hours). Key: Bd=BADARY Sm=CRIMEA Hh=HARTRAO Is=ISHIOKA Kg=KOGANEI Nt=NOTO Ny=NYALES20 On=ONSALA60 Kv=SEJONG Wz=WETTZELL 36=DSS36 Ft=FORTLEZA Kb=KASHIM34 K1=KASHIM11 Mh=METSAHOV Sv=SVETLOE Vm=VERAMZSW Zc=ZELENCHK Bd Sm Hh Is Kg Nt Ny On Kv Wz 36 Ft Kb K1 Mh Sv Vm Zc Avg % obs. time: 42 54 32 63 63 48 53 58 67 51 17 26 48 60 41 41 48 40 47 % cal. time: 2 2 1 2 2 2 2 2 2 2 2 1 2 2 1 2 1 2 2 % slew time: 30 25 20 3 6 28 9 10 7 6 20 8 27 6 10 29 7 29 16 % idle time: 26 18 45 31 28 21 35 29 24 40 60 64 22 32 47 27 43 28 35 total # scans: 185 160 104 172 168 184 170 160 140 181 153 63 184 163 95 191 122 191 154 # scans/hour : 8 7 4 7 7 8 7 7 6 8 6 3 8 7 4 8 5 8 6 Avg scan (sec): 194 291 270 314 324 223 268 314 410 244 96 352 226 315 368 186 339 178 272 # data tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.6 0.7 0.4 0.9 0.9 0.7 0.7 0.8 0.9 0.7 0.2 0.4 0.7 0.8 0.6 0.6 0.7 0.5 0.7 # OF OBSERVATIONS BY BASELINE | Bd Sm Hh Is Kg Nt Ny On Kv Wz 36 Ft Kb K1 Mh Sv Vm Zc Total ---------------------------------------------------------------------------------------------------- Bd| 50 28 91 36 74 66 47 25 86 72 6 98 28 21 98 22 101 949 Sm| 55 38 28 96 73 102 31 70 22 32 40 27 43 73 15 96 891 Hh| 13 8 60 17 47 9 46 29 39 12 7 29 42 3 60 504 Is| 90 31 57 36 56 29 90 0 159 75 13 33 54 37 902 Kg| 18 44 24 109 15 66 1 100 147 16 18 85 17 822 Nt| 86 91 17 135 23 36 29 17 40 115 5 126 999 Ny| 93 37 86 14 24 56 46 41 85 32 66 923 On| 29 81 6 41 32 25 56 81 13 75 879 Kv| 14 48 0 57 112 23 16 89 17 689 Wz| 20 22 29 16 33 155 5 134 976 36| 2 104 65 6 22 51 35 675 Ft| 0 1 29 19 0 19 271 Kb| 86 14 37 56 41 950 K1| 18 19 92 16 797 Mh| 37 4 31 454 Sv| 6 150 1006 Vm| 8 540 Zc| 1029 Number of 4-station scans: 223 Number of 5-station scans: 117 Number of 6-station scans: 65 Number of 7-station scans: 40 Number of 8-station scans: 16 Number of 9-station scans: 23 Number of 10-station scans: 18 Number of 11-station scans: 5 Number of 12-station scans: 1 Number of 14-station scans: 3 Number of 15-station scans: 1 Total number of scans: 512 Total number of obs: 7128 Total integrated obs-time: 1346387 Average obs-time: 188.9 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: BADARY CRIMEA HARTRAO ISHIOKA KASHIM11 KOGANEI NOTO NYALES20 SEJONG SVETLOE VERAMZSW 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 FORTLEZA KASHIM34 ONSALA60 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 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 ===========================================================