IVS-T2109 (International VLBI Service - Terrestical Reference Frame Observations) 2016 Feb.017-018 doy 047-048 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2016:047:17h30 UT Nominal End Time: 2016:048:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations (23+1): ====================== Bd=BADARY Sm=CRIMEA Ft=FORTLEZA Hh=HARTRAO Ht=HART15M Hb=HOBART12 K1=KASHIM11 Ke=KATH12M Kg=KOGANEI Mc=MEDICINA Nt=NOTO Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kv=SEJONG Ts=TSUKUB32 Vm=VERAMZSW Ww=WARK12M (Wn=WETTZ13N) 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. 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 ======== WETTZ13N was scheduled in tag-along mode. 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. OHIGGINS will have some drop outs due to satellite observations. Session Notes for session: t2109 =========================================================== Experiment: T2109 Description IVS-T2.109 Scheduler: IGGB/Muesk Correlator: BONN Start: 2016-047-17:30:00 End: 2016-048-17:30:01 Current yyyyddd: 2016047 (2016.13) ( 17435 MJD, TUES 16FEB.) =========================================================== First observations Observation listing from file t2109.skd for experiment T2109 Source Start DURATIONS name yyddd-hhmmss Bd Sm Ft Hh Ht Hb K1 Ke Kg Mc Nt Ny Oh On Kv Ts Vm Ww Wn Wz Yg Ys Zc 0104-408 16047-173000| 628 628 508 | 1424-418 16047-173000| 499 499 383 | OJ287 16047-173000| 32 622 686 276 386 382 560 116 342 222 24 342 293 187 686 314 77| Last observations CTA26 16048-170650| 720 621 720 | 0823+033 16048-171847| 460 460 370 54 444 460 | 0727-115 16048-172053| 31 166 65 53 325 187 177 88 325 169 139 146 167 47| 1726+455 16048-172513| 64 80 80 | OJ287 16048-172513| 94 136 127 95 55 136 99 27| =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.7 Min = 0.0 Max = 96.0 (Baseline Bd-Mc on 0834-201) RMS = 3.1 Total time: 1436 minutes ( 23.9 hours). Key: Bd=BADARY Sm=CRIMEA Ft=FORTLEZA Hh=HARTRAO Ht=HART15M Hb=HOBART12 K1=KASHIM11 Ke=KATH12M Kg=KOGANEI Mc=MEDICINA Nt=NOTO Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kv=SEJONG Ts=TSUKUB32 Vm=VERAMZSW Ww=WARK12M Wn=WETTZ13N Wz=WETTZELL Yg=YARRA12M Ys=YEBES40M Zc=ZELENCHK Bd Sm Ft Hh Ht Hb K1 Ke Kg Mc Nt Ny Oh On Kv Ts Vm Ww Wn Wz Yg Ys Zc Avg % obs. time: 39 59 56 47 42 71 63 68 60 53 42 48 39 62 62 27 55 61 61 42 63 49 26 52 % cal. time: 2 2 2 2 2 2 2 2 2 2 2 2 1 2 2 3 2 2 2 2 2 2 2 2 % slew time: 33 25 26 37 11 5 6 5 7 25 31 12 5 12 3 13 7 6 2 7 6 23 33 15 % idle time: 25 14 16 14 43 21 27 24 30 19 24 36 55 24 32 56 36 30 34 48 29 26 38 31 total # scans: 199 146 139 164 173 168 175 175 179 179 199 186 71 150 172 235 134 181 211 192 172 188 207 173 # scans/hour : 8 6 6 7 7 7 7 7 7 7 8 8 3 6 7 10 6 8 9 8 7 8 9 7 Avg scan (sec): 169 347 345 245 212 363 312 334 288 256 180 224 468 354 311 99 353 290 249 190 315 223 108 270 # data tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.5 0.8 0.8 0.6 0.6 1.0 0.9 0.9 0.8 0.7 0.6 0.7 0.5 0.8 0.9 0.4 0.8 0.8 0.8 0.6 0.9 0.7 0.4 0.7 # OF OBSERVATIONS BY BASELINE | Bd Sm Ft Hh Ht Hb K1 Ke Kg Mc Nt Ny Oh On Kv Ts Vm Ww Wn Wz Yg Ys Zc Total ----------------------------------------------------------------------------------------------------------------------------- Bd| 73 13 15 22 11 58 24 58 77 82 105 0 66 60 134 39 19 71 89 17 64 110 1207 Sm| 24 28 32 2 36 15 38 101 93 87 3 87 33 52 24 3 75 95 16 84 118 1119 Ft| 76 73 5 1 0 1 29 44 27 38 34 0 2 0 11 40 30 4 51 28 531 Hh| 139 17 5 20 5 26 41 13 37 19 9 10 3 14 37 25 37 34 33 643 Ht| 23 8 26 8 32 49 20 33 27 11 20 2 22 36 31 39 43 38 734 Hb| 30 120 30 1 1 3 16 3 29 34 20 144 5 1 109 1 2 607 K1| 50 159 36 30 49 0 38 110 131 83 33 51 38 37 30 40 1053 Ke| 48 8 6 8 4 8 50 58 25 114 15 9 130 5 12 755 Kg| 40 34 53 0 42 114 130 88 35 52 41 35 33 44 1088 Mc| 146 121 2 111 33 54 23 0 103 148 11 141 131 1374 Nt| 114 3 97 30 54 19 0 102 151 9 139 146 1390 Ny| 0 109 41 83 33 4 100 122 7 121 123 1343 Oh| 2 0 0 0 21 8 1 8 7 3 186 On| 37 47 27 3 87 104 8 114 98 1168 Kv| 94 99 36 50 32 36 30 43 977 Ts| 76 47 61 64 42 45 71 1309 Vm| 22 45 22 22 22 31 725 Ww| 1 1 98 0 3 631 Wn| 112 17 101 111 1280 Wz| 10 137 140 1403 Yg| 6 11 709 Ys| 114 1322 Zc| 1450 Number of 3-station scans: 267 Number of 4-station scans: 179 Number of 5-station scans: 82 Number of 6-station scans: 61 Number of 7-station scans: 40 Number of 8-station scans: 43 Number of 9-station scans: 19 Number of 10-station scans: 19 Number of 11-station scans: 17 Number of 12-station scans: 9 Number of 13-station scans: 13 Number of 14-station scans: 7 Number of 15-station scans: 8 Number of 17-station scans: 1 Number of 18-station scans: 1 Total number of scans: 766 Total number of obs: 11502 Total integrated obs-time: 2282265 Average obs-time: 198.4 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: BADARY CRIMEA HARTRAO HART15M HOBART12 KASHIM11 KATH12M KOGANEI NYALES20 SEJONG TSUKUB32 VERAMZSW WARK12M WETTZ13N 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 MEDICINA NOTO OHIGGINS 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 ===========================================================