IVS-T2103 (International VLBI Service - Terrestical Reference Frame Observations) 2015 Apr.21-22 doy 111-112 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2015:111:17h30 UT Nominal End Time: 2015:112:17h30 UT Duration: 24.0 hr Correlator: HAYS Participating stations (19): ====================== Sm=CRIMEA 13=DSS13 45=DSS45 Ht=HART15M Hb=HOBART12 K1=KASHIM11 Ke=KATH12M Km=KUNMING Kg=KOGANEI Ma=MATERA Mh=METSAHOV Ny=NYALES20 On=ONSALA60 Kv=SEJONG Sh=SESHAN25 Ts=TSUKUB32 Vm=VERAMZSW 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 20 min COMMENT ======= DOWNTIME DSS13 2015-112-05:30:00 2015-112-17:30:01 DSS45 2015-111-17:30:00 2015-111-19:15:00 DSS45 2015-112-12:30:00 2015-112-17:30:01 Session Notes for session: t2103 =========================================================== Experiment: T2103 Description IVS-T2.103 Scheduler: IGGB/Muesk Correlator: BONN Start: 2015-111-17:30:00 End: 2015-112-17:30:01 Current yyyyddd: 2015111 (2015.30) ( 17134 MJD, TUES 21APR.) =========================================================== 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. =========================================================== First observations Observation listing from file t2103.skd for experiment T2103 Source Start DURATIONS name yyddd-hhmmss Sm 13 45 Ht Hb K1 Ke Km Kg Ma Mh Ny On Kv Sh Ts Vm Wz Yg 0059+581 15111-173000| 43 380 375 268 513 77 222 513 46 93 | 1144-379 15111-173000| 610 720 229 720| 1334-127 15111-173000| 168 269 30 269 | 1846+322 15111-191607| 113 43 113 | Last observations 1424-418 15112-171424| 230 222 99 28 230 222 51 18 96| 1726+455 15112-171440| 720 476 720 | 1908-201 15112-171851| 399 399 150 50 | 0805+410 15112-171943| 182 182 144 | OJ287 15112-172606| 77 74 34 86 97 58 97 37 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.6 Min = 0.0 Max = 84.7 (Baseline 13-Ke on 0437-454) RMS = 2.8 Total time: 1438 minutes ( 24.0 hours). Key: Sm=CRIMEA 13=DSS13 45=DSS45 Ht=HART15M Hb=HOBART12 K1=KASHIM11 Ke=KATH12M Km=KUNMING Kg=KOGANEI Ma=MATERA Mh=METSAHOV Ny=NYALES20 On=ONSALA60 Kv=SEJONG Sh=SESHAN25 Ts=TSUKUB32 Vm=VERAMZSW Wz=WETTZELL Yg=YARRA12M Sm 13 45 Ht Hb K1 Ke Km Kg Ma Mh Ny On Kv Sh Ts Vm Wz Yg Avg % obs. time: 54 17 19 60 70 65 65 40 59 61 61 50 62 65 49 31 69 33 64 52 % cal. time: 2 1 2 2 2 2 2 3 2 2 2 2 2 2 2 3 2 2 2 2 % slew time: 28 16 32 12 5 7 6 28 7 17 16 12 12 4 25 13 8 8 5 14 % idle time: 14 65 47 25 22 26 26 29 31 20 20 35 23 29 22 52 20 55 27 31 total # scans: 180 111 192 175 171 177 185 240 185 184 148 187 178 162 208 253 146 215 173 182 # scans/hour : 8 5 8 7 7 7 8 10 8 8 6 8 7 7 9 11 6 9 7 8 Avg scan (sec): 261 130 83 296 355 315 302 143 275 284 355 231 300 346 204 105 406 133 321 254 # data tracks: 16 32 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 32 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TBytes: 0.8 0.5 0.3 0.9 1.1 1.0 1.0 0.6 0.9 0.9 0.9 0.8 1.0 1.0 0.8 0.5 1.1 0.5 1.0 0.8 Total TB(M5): 0.8 0.5 0.3 0.8 1.0 0.9 0.9 0.5 0.8 0.8 0.8 0.7 0.9 0.9 0.7 0.4 0.9 0.5 0.9 0.7 # OF OBSERVATIONS BY BASELINE | Sm 13 45 Ht Hb K1 Ke Km Kg Ma Mh Ny On Kv Sh Ts Vm Wz Yg Total --------------------------------------------------------------------------------------------------------- Sm| 15 8 77 5 21 14 62 22 134 81 80 104 17 36 33 11 125 7 852 13| 31 6 21 26 12 13 32 30 20 47 29 22 19 38 22 33 3 419 45| 32 81 47 63 71 39 6 4 9 4 28 54 74 23 6 68 648 Ht| 39 5 13 63 6 79 51 43 61 9 31 25 3 84 45 672 Hb| 18 100 31 17 2 4 9 2 24 29 29 21 2 114 548 K1| 41 59 142 21 17 43 25 92 82 122 74 21 23 879 Ke| 50 46 3 7 16 3 47 52 53 46 3 110 679 Km| 63 60 40 67 48 48 141 143 28 86 42 1115 Kg| 24 18 50 25 111 86 117 87 25 22 932 Ma| 87 87 131 15 37 37 3 148 3 907 Mh| 70 109 24 23 21 9 96 9 690 Ny| 90 40 62 65 25 114 13 930 On| 20 37 35 3 132 3 861 Kv| 65 82 99 17 27 787 Sh| 148 39 52 33 1026 Ts| 58 52 31 1163 Vm| 3 21 575 Wz| 5 1004 Yg| 579 Number of 3-station scans: 369 Number of 4-station scans: 143 Number of 5-station scans: 90 Number of 6-station scans: 59 Number of 7-station scans: 41 Number of 8-station scans: 31 Number of 9-station scans: 20 Number of 10-station scans: 11 Number of 11-station scans: 4 Number of 12-station scans: 3 Number of 13-station scans: 3 Number of 14-station scans: 2 Number of 15-station scans: 1 Total number of scans: 777 Total number of obs: 7633 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: CRIMEA HART15M HOBART12 KASHIM11 KATH12M KUNMING KOGANEI MATERA NYALES20 SEJONG SESHAN25 TSUKUB32 VERAMZSW 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 Speed 4.00 MHz 1 16(*1) 16 0.00 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 setup for: DSS13 Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:1 256 Mbits 128 MHz 14 2 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 32(*1) 32 0.00 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 19.13 11.48 30.61 Recording mode setup for: DSS45 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 Speed 4.00 MHz 1 16(*2) 32 0.00 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 setup 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 Speed 4.00 MHz 1 16(*2) 32 0.00 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 ===========================================================