IVS-T2118 (International VLBI Service - Terrestical Reference Frame Observations) 2017 May,23/24 doy 143-144 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2017:143:17h30 UT Nominal End Time: 2017:144:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations (17) ====================== Bd BADARY Sm CRIMEA 6a DSS65A Hh HARTRAO Ht HART15M Hb HOBART12 Is ISHIOKA Ke KATH12M Kg KOGANEI Mc MEDICINA Nt NOTO Ny NYALES20 Kv SEJONG Sv SVETLOE Ww WARK12M Wz WETTZELL Yg YARRA12M 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 ======== DSS6a will stop observation at 144/0535 UT 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: t2118 Experiment: T2118 Description IVS-T2.118 Scheduler: IGGB/Muesk Correlator: BONN Start: 2017-143-17:30:00 End: 2017-144-17:30:01 Current yyyyddd: 2017143 (2017.39) ( 17897 MJD, TUES 23MAY.) =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Bd Sm Nt Ny Kv Wz Sv Kg 6a Hh Ht Hb Is Ke Mc Ww Yg 1057-797 17143-173000| 335 271 449 449 | 1726+455 17143-173000| 40 424 164 170 400 147 63 457 44 186 403 234 457| 0016+731 17143-173530| 52 86 126 119 52 21 151 151 | 0059+581 17143-173829| 111 111 108 73 | Last observations 1424-418 17144-172253| 146 118 144 146 126 | 0059+581 17144-172525| 26 108 108 73 | 1921-293 17144-172614| 57 80 127 127| 0823+033 17144-172843| 57 34 57 39 21 49 | End of listing. =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.8 Min = 0.0 Max = 61.3 (Baseline Nt-Ke on 1424-418) RMS = 3.2 Total time: 1440 minutes ( 24.0 hours). Key: Bd=BADARY Sm=CRIMEA Nt=NOTO Ny=NYALES20 Kv=SEJONG Wz=WETTZELL Sv=SVETLOE Kg=KOGANEI 6a=DSS65A Hh=HARTRAO Ht=HART15M Hb=HOBART12 Is=ISHIOKA Ke=KATH12M Mc=MEDICINA Ww=WARK12M Yg=YARRA12M Bd Sm Nt Ny Kv Wz Sv Kg 6a Hh Ht Hb Is Ke Mc Ww Yg Avg % obs. time: 30 56 45 51 58 54 33 56 7 49 45 55 46 59 61 47 57 48 % cal. time: 3 2 2 2 2 2 3 2 1 2 2 2 2 2 2 2 2 2 % slew time: 37 24 31 12 9 6 37 7 19 30 11 6 4 6 22 4 6 16 % idle time: 29 17 21 34 30 38 26 34 72 18 42 37 47 32 14 46 34 34 total # scans: 221 136 209 175 170 160 234 178 122 144 158 157 200 175 156 142 171 171 # scans/hour : 9 6 9 7 7 7 10 7 5 6 7 7 8 7 7 6 7 7 Avg scan (sec): 117 359 188 253 296 289 123 272 48 292 244 302 198 290 339 286 289 245 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.4 0.8 0.6 0.7 0.8 0.7 0.5 0.8 0.1 0.7 0.6 0.8 0.6 0.8 0.8 0.7 0.8 0.7 # OF OBSERVATIONS BY BASELINE | Bd Sm Nt Ny Kv Wz Sv Kg 6a Hh Ht Hb Is Ke Mc Ww Yg Total ----------------------------------------------------------------------------------------------- Bd| 69 86 105 81 76 140 90 45 31 38 13 111 28 63 14 22 1012 Sm| 92 61 18 72 94 21 38 54 63 5 28 9 77 1 12 714 Nt| 79 16 128 156 17 98 73 85 5 27 6 121 0 13 1002 Ny| 60 81 120 58 40 16 23 2 72 14 76 2 4 813 Kv| 16 41 141 10 5 8 32 123 61 18 31 39 700 Wz| 130 16 57 43 46 1 23 3 129 0 8 829 Sv| 40 90 49 61 3 59 9 117 1 10 1120 Kg| 10 12 15 38 142 58 17 42 42 759 6a| 43 51 0 14 2 63 0 2 563 Hh| 136 34 15 24 47 18 43 643 Ht| 30 21 22 52 16 39 706 Hb| 35 124 2 119 130 573 Is| 61 22 41 39 833 Ke| 3 109 134 667 Mc| 0 8 815 Ww| 111 505 Yg| 656 Number of 4-station scans: 295 Number of 5-station scans: 129 Number of 6-station scans: 60 Number of 7-station scans: 46 Number of 8-station scans: 29 Number of 9-station scans: 14 Number of 10-station scans: 3 Number of 13-station scans: 1 Total number of scans: 577 Total number of obs: 6455 Average obs-time: 191.7 =========================================================== Recording mode EUR2-SX SX Recording mode for: BADARY CRIMEA HARTRAO HART15M HOBART12 ISHIOKA KATH12M KOGANEI NOTO NYALES20 SEJONG SVETLOE WARK12M YARRA12M 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: DSS65A MEDICINA 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 =========================================================== First observations Observation listing from file t2118.skd for experiment T2118 Source Start DURATIONS name yyddd-hhmmss Bd Sm Nt Ny Kv Wz Sv Kg 6a Hh Ht Hb Is Ke Mc Ww Yg 1057-797 17143-173000| 335 271 449 449 | 1726+455 17143-173000| 40 424 164 170 400 138 63 457 44 186 403 234 457| Last observations 1111+149 17144-171951| 543 363 456 243 100 543 | 2052-474 17144-172043| 255 255 225 225| 1803+784 17144-172432| 226 109 226 186 24 125 | 1424-418 17144-172552| 145 118 143 145 125 90| 0133+476 17144-172723| 135 57 31 135 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.9 Min = 0.0 Max = 72.0 (Baseline Sm-Kg on 1657-261) RMS = 3.5 Total time: 1439 minutes ( 24.0 hours). Key: Bd=BADARY Sm=CRIMEA Nt=NOTO Ny=NYALES20 Kv=SEJONG Wz=WETTZELL Sv=SVETLOE Kg=KOGANEI 6a=DSS65A Hh=HARTRAO Ht=HART15M Hb=HOBART12 Is=ISHIOKA Ke=KATH12M Mc=MEDICINA Ww=WARK12M Yg=YARRA12M Bd Sm Nt Ny Kv Wz Sv Kg 6a Hh Ht Hb Is Ke Mc Ww Yg Avg % obs. time: 30 57 45 48 53 51 32 53 13 48 45 54 44 65 60 47 56 47 % cal. time: 2 2 2 2 2 2 3 2 3 2 2 2 2 2 2 2 2 2 % slew time: 35 25 31 12 9 6 37 6 40 33 11 6 4 7 24 5 7 18 % idle time: 32 15 21 36 35 40 27 38 43 16 41 38 49 25 13 46 34 33 total # scans: 210 149 197 190 173 176 235 169 243 145 162 168 204 194 160 158 182 183 # scans/hour : 9 6 8 8 7 7 10 7 10 6 7 7 9 8 7 7 8 8 Avg scan (sec): 123 329 196 220 263 250 119 270 48 285 240 276 186 288 326 254 266 231 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.4 0.8 0.6 0.7 0.7 0.7 0.4 0.7 0.2 0.7 0.6 0.7 0.6 0.9 0.8 0.6 0.8 0.7 # OF OBSERVATIONS BY BASELINE | Bd Sm Nt Ny Kv Wz Sv Kg 6a Hh Ht Hb Is Ke Mc Ww Yg Total ----------------------------------------------------------------------------------------------- Bd| 73 82 102 88 76 131 78 94 24 39 14 100 26 64 11 25 1027 Sm| 84 71 33 74 96 27 90 61 62 3 37 11 74 2 13 811 Nt| 79 23 131 143 16 175 63 78 3 26 5 120 0 13 1041 Ny| 77 87 125 64 105 15 23 5 78 22 83 2 14 952 Kv| 23 50 131 38 11 16 22 130 62 22 27 29 782 Wz| 140 22 145 44 56 1 29 6 132 0 11 977 Sv| 41 183 43 52 2 58 13 119 1 14 1211 Kg| 32 12 20 29 151 62 14 36 31 766 6a| 70 85 1 39 4 133 0 9 1203 Hh| 134 31 18 24 52 19 38 659 Ht| 26 28 18 59 19 32 747 Hb| 38 143 2 137 143 600 Is| 67 26 46 44 915 Ke| 8 132 148 751 Mc| 0 10 918 Ww| 128 560 Yg| 702 Number of 4-station scans: 284 Number of 5-station scans: 120 Number of 6-station scans: 76 Number of 7-station scans: 41 Number of 8-station scans: 50 Number of 9-station scans: 18 Number of 10-station scans: 5 Number of 11-station scans: 1 Number of 13-station scans: 1 Total number of scans: 596 Total number of obs: 7311 Total integrated obs-time: 1228400 Average obs-time: 168.0 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: BADARY CRIMEA HARTRAO HART15M HOBART12 ISHIOKA KATH12M KOGANEI NOTO NYALES20 SEJONG SVETLOE WARK12M YARRA12M 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: DSS65A MEDICINA 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 ===========================================================