IVS-T2105 (International VLBI Service - Terrestical Reference Frame Observations) 2015 Aug 25 - Aug. 26 doy 237-238 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2015:237:17h30 UT Nominal End Time: 2015:238:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations (20): ====================== 13=DSS13 Bd=BADARY Ht=HART15M Kk=KOKEE K1=KASHIM11 Kg=KOGANEI Mc=MEDICINA Mh=METSAHOV Nt=NOTO Ny=NYALES20 On=ONSALA60 Kv=SEJONG Sh=SESHAN25 Vm=VERAMZSW Ts=TSUKUB32 Wz=WETTZELL Yg=YARRA12M Wn=WETTZ13N 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 20 min COMMENT ======= TWIN Wettzell North was scheduled in tag-along mode Session Notes for session: t2105.skd =========================================================== Experiment: T2105 Description IVS-T2.105 Scheduler: IGGB/Muesk Correlator: BONN Start: 2015-237-17:30:00 End: 2015-238-17:30:01 Current yyyyddd: 2015237 (2015.65) ( 17260 MJD, TUES 25AUG.) =========================================================== There are no observations for Kokee and Wettzell from 18:20 U.T. to 19:40 U.T. Kokee and Wettzell will participate in the intensive session during this 1.5 hour period. =========================================================== First observations Observation listing from file t2105.skd for experiment T2105 Source Start DURATIONS name yyddd-hhmmss 13 Bd Ht K1 Kg Kk Kv Mc Mh Nt Ny On Sh Sv Ts Vm Wn Wz Ys Zc 0059+581 15237-173000| 61 246 247 111 422 422 422 | 1726+455 15237-173000| 213 306 339 614 207 326 542 614 129 175 246 439 135| Last observations 0133+476 15238-170834| 61 506 504 390 574 574 182 574 | 1726+455 15238-170950| 309 542 542 393 | 2356+385 15238-171100| 642 665 453 303 386 665 303| 0454-234 15238-171850| 15 51 51 26 15 | NRAO150 15238-172023| 57 57 57 22 15 15 | 0332-403 15238-172210| 280 280 169 18 | 1213-172 15238-172324| 65 246 161 246 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 1.1 Min = 0.0 Max = 160.0 (Baseline Ts-Wn on 1213-172) RMS = 4.0 Total time: 1435 minutes ( 23.9 hours). Key: 13=DSS13 Bd=BADARY Ht=HART15M K1=KASHIM11 Kg=KOGANEI Kk=KOKEE Kv=SEJONG Mc=MEDICINA Mh=METSAHOV Nt=NOTO Ny=NYALES20 On=ONSALA60 Sh=SESHAN25 Sv=SVETLOE Ts=TSUKUB32 Vm=VERAMZSW Wn=WETTZ13N Wz=WETTZELL Ys=YEBES40M Zc=ZELENCHK 13 Bd Ht K1 Kg Kk Kv Mc Mh Nt Ny On Sh Sv Ts Vm Wn Wz Ys Zc Avg % obs. time: 26 36 52 59 59 45 63 54 58 42 52 60 50 28 24 65 59 46 52 29 48 % cal. time: 2 2 2 2 2 2 2 2 2 3 2 2 2 3 3 2 2 2 2 3 2 % slew time: 34 33 10 7 8 13 3 26 17 35 12 12 25 37 14 8 2 7 23 36 19 % idle time: 37 27 35 31 30 39 30 17 22 20 33 25 22 32 59 24 36 43 21 31 31 total # scans: 204 207 176 201 206 180 168 187 153 217 189 166 191 230 257 159 200 199 192 226 195 # scans/hour : 9 9 7 8 9 8 7 8 6 9 8 7 8 10 11 7 8 8 8 9 8 Avg scan (sec): 108 151 254 254 247 217 325 250 326 165 235 309 226 105 79 353 253 200 234 111 219 # Mk5 tracks: 32 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.7 0.5 0.7 0.8 0.8 0.6 0.9 0.7 0.8 0.6 0.7 0.8 0.7 0.4 0.3 0.9 0.8 0.6 0.7 0.4 0.7 # OF OBSERVATIONS BY BASELINE | 13 Bd Ht K1 Kg Kk Kv Mc Mh Nt Ny On Sh Sv Ts Vm Wn Wz Ys Zc Total -------------------------------------------------------------------------------------------------------------- 13| 67 17 48 53 105 36 62 49 59 101 59 50 87 97 43 71 68 67 56 1195 Bd| 56 57 54 66 52 64 34 72 82 48 124 102 141 39 62 72 54 104 1350 Ht| 22 27 0 32 90 66 119 40 73 46 82 34 19 69 87 95 102 1076 K1| 168 88 121 20 13 20 36 15 90 23 140 125 37 21 17 28 1089 Kg| 83 136 22 20 17 38 19 92 25 138 126 47 22 17 26 1130 Kk| 56 25 26 18 53 28 71 37 116 71 43 29 24 26 965 Kv| 21 22 17 35 16 77 27 92 114 44 21 14 30 963 Mc| 62 153 98 98 38 128 38 16 79 152 153 127 1446 Mh| 61 69 105 18 84 16 10 72 67 74 70 938 Nt| 87 85 42 150 41 13 100 165 152 160 1531 Ny| 93 59 129 65 34 79 101 102 96 1397 On| 32 111 29 13 79 100 96 90 1189 Sh| 59 152 55 48 44 33 62 1192 Sv| 68 22 104 151 116 176 1681 Ts| 87 48 47 25 65 1439 Vm| 30 18 13 24 872 Wn| 94 83 96 1285 Wz| 139 136 1534 Ys| 108 1382 Zc| 1582 Number of 4-station scans: 180 Number of 5-station scans: 143 Number of 6-station scans: 85 Number of 7-station scans: 51 Number of 8-station scans: 38 Number of 9-station scans: 31 Number of 10-station scans: 30 Number of 11-station scans: 26 Number of 12-station scans: 12 Number of 13-station scans: 4 Number of 14-station scans: 3 Number of 15-station scans: 9 Number of 16-station scans: 4 Total number of scans: 616 Total number of obs: 12618 Total integrated obs-time: 1980018 Average obs-time: 156.9 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: BADARY HART15M KASHIM11 KOKEE KOGANEI NYALES20 SEJONG SESHAN25 SVETLOE TSUKUB32 VERAMZSW 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: 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: MEDICINA NOTO ONSALA60 WETTZ13N 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 ===========================================================