IVS-T2127 (International VLBI Service - Terrestical Reference Frame Observations) 2018 Sep.04-05 doy 247-248 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2018:247:17h30 UT Nominal End Time: 2018:248:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations(17) ====================== Bd=BADARY Sm=CRIMEA Eb=EFLSBERG Ft=FORTLEZA Hh=HARTRAO Ht=HART15M Kb=KASHIM34 K1=KASHIM11 Ke=KATH12M Mh=METSAHOV Nt=NOTO Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kv=SEJONG Wz=WETTZELL Yg=YARRA12M 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. 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: t2127 =========================================================== Experiment: T2127 Description IVS-T2.127 Scheduler: IGGB/Muesk Correlator: BONN Start: 2018-247-17:30:00 End: 2018-248-17:30:01 Current yyyyddd: 2018247 (2018.68) ( 18366 MJD, TUES 4SEP.) =========================================================== First observations Observation listing from file t2127.skd for experiment T2127 Source Start DURATIONS name yyddd-hhmmss Bd Sm Eb Ft Hh Ht Kb K1 Ke Mh Nt Ny Oh On Kv Wz Yg Ys Zc 0003-066 18247-173000| 138 800 476 486 800 | 1424-418 18247-173000| 658 95 658 | 1726+455 18247-173000| 102 285 25 208 285 117 168 277 113 197 71| Last observations 1424-418 18248-170849| 658 96 89 658 | 0119+115 18248-170939| 58 391 391 | 3C418 18248-171406| 56 181 25 181 137 56| CTA26 18248-171644| 606 348 606 | 2335-027 18248-171755| 572 622 635 635| 0454+844 18248-171815| 68 516 516 | 0718+793 18248-171904| 403 309 403 304 | 1908-201 18248-172216| 145 145 134 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.6 Min = 0.0 Max = 84.7 (Baseline Hh-Oh on OJ287 ) RMS = 2.4 Total time: 1435 minutes ( 23.9 hours). Key: Bd=BADARY Sm=CRIMEA Eb=EFLSBERG Ft=FORTLEZA Hh=HARTRAO Ht=HART15M Kb=KASHIM34 K1=KASHIM11 Ke=KATH12M Mh=METSAHOV Nt=NOTO Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kv=SEJONG Wz=WETTZELL Yg=YARRA12M Ys=YEBES40M Zc=ZELENCHK Bd Sm Eb Ft Hh Ht Kb K1 Ke Mh Nt Ny Oh On Kv Wz Yg Ys Zc Avg % obs. time: 36 55 9 38 52 52 40 54 58 47 47 51 17 55 61 45 52 54 37 45 % cal. time: 2 2 2 1 2 2 2 2 2 1 2 2 0 2 2 2 1 2 2 2 % slew time: 27 22 60 14 29 9 27 6 5 12 26 9 1 10 8 6 4 12 27 17 % idle time: 33 20 28 46 17 36 29 37 34 38 24 37 80 32 29 46 41 31 33 36 total # scans: 186 143 199 79 135 142 195 156 134 123 173 166 29 157 151 179 115 165 181 147 # scans/hour : 8 6 8 3 6 6 8 7 6 5 7 7 1 7 6 7 5 7 8 6 Avg scan (sec): 166 332 39 417 333 318 177 300 373 332 235 262 516 301 346 217 390 284 176 289 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total GB(M5): 495 759 125 528 720 722 553 748 800 653 652 697 239 755 835 621 717 750 511 625 # OF OBSERVATIONS BY BASELINE | Bd Sm Eb Ft Hh Ht Kb K1 Ke Mh Nt Ny Oh On Kv Wz Yg Ys Zc Total --------------------------------------------------------------------------------------------------------- Bd| 49 63 5 15 22 111 68 32 31 52 75 0 42 59 70 19 39 92 844 Sm| 73 9 28 35 28 23 17 37 70 67 2 73 24 64 14 67 85 765 Eb| 15 26 35 27 20 5 61 111 76 2 84 18 121 4 88 115 944 Ft| 46 42 0 0 0 6 19 5 11 15 0 10 0 22 12 217 Hh| 122 7 2 13 13 40 9 24 19 3 21 21 29 32 470 Ht| 12 5 13 18 48 16 20 23 7 32 19 36 37 542 Kb| 125 70 24 29 65 0 38 97 38 50 26 42 789 K1| 69 29 17 40 0 29 100 18 45 19 21 630 Ke| 12 4 15 1 15 82 6 100 6 14 474 Mh| 42 52 0 59 31 47 10 41 39 552 Nt| 62 2 67 17 114 7 118 86 905 Ny| 1 92 37 84 9 88 67 860 Oh| 1 0 1 3 4 1 73 On| 30 87 11 85 54 824 Kv| 19 61 18 26 629 Wz| 4 97 104 937 Yg| 5 13 395 Ys| 65 853 Zc| 905 Number of 3-station scans: 295 Number of 4-station scans: 123 Number of 5-station scans: 76 Number of 6-station scans: 45 Number of 7-station scans: 28 Number of 8-station scans: 23 Number of 9-station scans: 7 Number of 10-station scans: 9 Number of 11-station scans: 12 Number of 12-station scans: 6 Number of 14-station scans: 1 Number of 15-station scans: 2 Total number of scans: 627 Total number of obs: 6304 Total integrated obs-time: 1157442 Average obs-time: 183.6 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: BADARY CRIMEA EFLSBERG HARTRAO HART15M KASHIM11 KATH12M NOTO NYALES20 SEJONG WETTZELL YARRA12M 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: FORTLEZA KASHIM34 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 ===========================================================