IVS-T2104 (International VLBI Service - Terrestical Reference Frame Observations) 2015 June,30 - July,1 doy 181-182 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2015:181:17h30 UT Nominal End Time: 2015:182:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations (20): ====================== Sm=CRIMEA 13=DSS13 Ft=FORTLEZA Ht=HART15M Hb=HOBART12 K1=KASHIM11 Ke=KATH12M Km=KUNMING Kg=KOGANEI Mc=MEDICINA Mh=METSAHOV Nt=NOTO Ny=NYALES20 On=ONSALA60 Kv=SEJONG Sh=SESHAN25 Ts=TSUKUB32 Wz=WETTZELL Yg=YARRA12M Wn=WETTZ13N 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 ======= Medicina was scheduled in tag-along mode Session Notes for session: t2104 =========================================================== Experiment: T2104 Description IVS-T2.104 Scheduler: IGGB/Muesk Correlator: BONN Start: 2015-181-17:30:00 End: 2015-182-17:30:01 Current yyyyddd: 2015181 (2015.50) ( 17204 MJD, TUES 30JUN.) =========================================================== 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 t2104.skd for experiment T2104 Source Start DURATIONS name yyddd-hhmmss Sm 13 Ft Ht Hb K1 Ke Km Kg Mc Mh Nt Ny On Kv Sh Ts Wn Wz Yg 0059+581 15181-173000| 131 17 131 131 121 29 15 | 1057-797 15181-173000| 234 401 401 388| OJ287 15181-173000| 123 59 333 333 38 60 106 43 47 | Last observations 1057-797 15182-171731| 230 401 401 389| 1636+473 15182-171843| 287 516 630 630 216 478 516 | 0059+581 15182-171927| 131 39 360 359 159 523 217 523 | 1144+402 15182-172512| 220 276 100 276 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.9 Min = 0.0 Max = 65.5 (Baseline Ft-Ke on 0834-201) RMS = 3.3 Total time: 1440 minutes ( 24.0 hours). Key: Sm=CRIMEA 13=DSS13 Ft=FORTLEZA Ht=HART15M Hb=HOBART12 K1=KASHIM11 Ke=KATH12M Km=KUNMING Kg=KOGANEI Mc=MEDICINA Mh=METSAHOV Nt=NOTO Ny=NYALES20 On=ONSALA60 Kv=SEJONG Sh=SESHAN25 Ts=TSUKUB32 Wn=WETTZ13N Wz=WETTZELL Yg=YARRA12M Sm 13 Ft Ht Hb K1 Ke Km Kg Mc Mh Nt Ny On Kv Sh Ts Wn Wz Yg Avg % obs. time: 54 25 60 43 60 64 61 27 63 47 61 42 51 55 65 40 17 49 46 54 49 % cal. time: 2 2 1 2 2 2 2 3 2 2 1 3 2 2 2 3 3 3 2 2 2 % slew time: 28 28 17 11 4 6 6 28 6 21 14 31 13 14 4 27 13 2 8 5 15 % idle time: 15 43 21 42 33 26 30 41 27 29 23 23 33 28 29 30 66 46 43 39 34 total # scans: 171 206 108 181 152 180 184 249 180 175 129 219 206 188 179 236 257 217 209 166 189 # scans/hour : 7 9 5 8 6 8 8 10 8 7 5 9 9 8 7 10 11 9 9 7 8 Avg scan (sec): 273 106 480 205 342 308 287 95 305 231 406 167 213 253 312 146 57 194 190 279 241 # data tracks: 16 32 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.7 0.7 0.8 0.6 0.8 0.9 0.8 0.4 0.9 0.6 0.8 0.6 0.7 0.8 0.9 0.6 0.2 0.7 0.6 0.7 0.7 # OF OBSERVATIONS BY BASELINE | Sm 13 Ft Ht Hb K1 Ke Km Kg Mc Mh Nt Ny On Kv Sh Ts Wn Wz Yg Total -------------------------------------------------------------------------------------------------------------- Sm| 52 45 64 10 29 13 65 29 77 64 111 88 83 30 53 43 102 101 12 1071 13| 39 16 18 51 23 56 45 66 48 93 116 80 47 70 92 103 94 17 1126 Ft| 55 4 6 4 12 6 42 58 48 41 59 7 8 6 36 36 8 520 Ht| 60 13 62 49 14 56 38 79 27 50 16 32 21 56 60 68 836 Hb| 36 140 52 39 5 2 3 5 3 52 36 42 3 3 138 651 K1| 67 97 155 44 19 31 47 32 111 124 150 36 35 48 1131 Ke| 67 67 13 3 5 10 7 72 56 67 5 4 151 836 Km| 98 54 23 70 86 52 91 195 175 69 62 55 1428 Kg| 42 17 31 46 30 118 125 147 35 34 45 1123 Mc| 49 105 92 78 33 53 57 105 101 10 1082 Mh| 60 65 81 22 20 21 63 60 4 717 Nt| 107 103 22 52 51 182 174 6 1333 Ny| 114 37 82 90 126 118 6 1303 On| 27 47 49 117 115 4 1131 Kv| 108 129 26 27 50 1025 Sh| 205 59 58 37 1420 Ts| 61 58 47 1511 Wn| 195 3 1382 Wz| 3 1338 Yg| 712 Number of 4-station scans: 234 Number of 5-station scans: 158 Number of 6-station scans: 93 Number of 7-station scans: 51 Number of 8-station scans: 24 Number of 9-station scans: 33 Number of 10-station scans: 20 Number of 11-station scans: 19 Number of 12-station scans: 10 Number of 13-station scans: 2 Number of 14-station scans: 2 Number of 15-station scans: 1 Number of 16-station scans: 4 Number of 17-station scans: 0 Number of 18-station scans: 0 Number of 19-station scans: 0 Number of 20-station scans: 0 Total number of scans: 651 Total number of obs: 10838 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: CRIMEA HART15M HOBART12 KASHIM11 KATH12M KUNMING KOGANEI NYALES20 SEJONG SESHAN25 TSUKUB32 WETTZ13N 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: 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 4.00 MHz 1 32(*1) 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 19.13 11.48 30.61 Recording mode for: FORTLEZA MEDICINA NOTO 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 ===========================================================