IVS-T2129 (International VLBI Service - Terrestical Reference Frame Observations) 2018 Dec.18-19 doy 352-353 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2018:352:17h30 UT Nominal End Time: 2018:353:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations(18) ====================== Sm=CRIMEA 6a=DSS65A Ht=HART15M Is=ISHIOKA Kb=KASHIM34 Sm=CRIMEA Kg=KOGANEI Ma=MATERA Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kg=KOGANEI Kv=SEJONG Sv=SVETLOE Vm=VERAMZSW Wz=WETTZELL 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 ======== 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. We have to vacate some satellite passages on OHIG station. That produce several observing gaps during this 24 hours. DSS6a observing time from 352-19:10 until 353-10:45 UT Session Notes for session: t2129.skd =========================================================== Experiment: T2129 Description IVS-T2129 Scheduler: BONN/Vienn Correlator: BONN Start: 2018-352-17:30:00 End: 2018-353-17:30:00 Current yyyyddd: 2018352 (2018.96) ( 18471 MJD, TUES 18DEC.) =========================================================== First observations Observation listing from file t2129.skd for experiment T2129 Source Start DURATIONS name yyddd-hhmmss Sm 6a Ht Is Kb Kg Ma Ny Oh On Kv Sv Vm Wz Zc 1055+018 18352-173000| 111 30 111 99 100 | CTA102 18352-173000| 378 200 561 585 585 568 394 217 129| 2234+282 18352-191346| 119 132 132 94 39 100| Last observations 2134+00 18353-170653| 700 700 411 700 407 217 216| 0235+164 18353-171448| 700 700 700 700 700 700 700 700 700 700 700| =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 8.4 Min = 0.0 Max = 90.0 (Baseline Oh-Kv on NRAO530 ) RMS = 8.4 Total time: 1437 minutes ( 24.0 hours). Key: Sm=CRIMEA 6a=DSS65A Ht=HART15M Is=ISHIOKA Kb=KASHIM34 Kg=KOGANEI Ma=MATERA Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kv=SEJONG Sv=SVETLOE Vm=VERAMZSW Wz=WETTZELL Zc=ZELENCHK Sm 6a Ht Is Kb Kg Ma Ny Oh On Kv Sv Vm Wz Zc Avg % obs. time: 67 39 73 74 63 76 76 81 40 78 81 52 83 69 50 67 % cal. time: 2 2 2 3 3 3 2 2 1 3 3 3 2 4 3 3 % slew time: 25 21 11 5 28 7 18 10 4 14 12 40 9 11 41 18 % idle time: 5 37 13 16 6 13 3 6 54 3 3 4 5 16 5 13 total # scans: 173 165 201 292 260 270 203 198 85 246 246 291 205 348 283 231 # scans/hour : 7 7 8 12 11 11 8 8 4 10 10 12 9 15 12 10 Avg scan (sec): 333 203 312 219 208 241 325 352 405 275 283 155 347 170 152 264 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.92 0.54 1.00 1.02 0.86 1.04 1.05 1.12 0.55 1.08 1.11 0.72 1.14 0.95 0.69 0.92 # OF OBSERVATIONS BY BASELINE | Sm 6a Ht Is Kb Kg Ma Ny Oh On Kv Sv Vm Wz Zc Total ------------------------------------------------------------------------------------- Sm| 97 119 108 108 109 144 120 41 137 110 148 105 151 157 1654 6a| 101 77 76 75 118 98 40 127 78 133 73 154 126 1373 Ht| 95 92 96 136 102 67 130 97 141 85 173 146 1580 Is| 256 260 108 137 7 131 231 132 196 136 126 2000 Kb| 231 108 133 6 127 209 130 182 127 123 1908 Kg| 108 141 5 130 221 130 193 129 126 1954 Ma| 130 53 167 111 169 107 187 161 1807 Ny| 23 163 140 156 135 157 135 1770 Oh| 43 4 46 2 69 49 455 On| 132 194 127 225 168 2001 Kv| 135 184 128 128 1908 Sv| 127 262 247 2150 Vm| 113 117 1746 Wz| 243 2254 Zc| 2052 Number of 3-station scans: 148 Number of 4-station scans: 69 Number of 5-station scans: 59 Number of 6-station scans: 46 Number of 7-station scans: 37 Number of 8-station scans: 23 Number of 9-station scans: 17 Number of 10-station scans: 18 Number of 11-station scans: 11 Number of 12-station scans: 24 Number of 13-station scans: 46 Number of 14-station scans: 28 Total number of scans: 526 Total number of obs: 13306 Total integrated obs-time: 3176703 Average obs-time: 238.7 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: CRIMEA HART15M ISHIOKA KOGANEI MATERA NYALES20 SEJONG SVETLOE VERAMZSW WETTZELL 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: DSS65A KASHIM34 OHIGGINS ONSALA60 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 =========================================================== Session Notes for session: t2129 =========================================================== Experiment: T2129 Description IVS-T2129 Scheduler: BONN/Vienna Correlator: BONN Start: 2018-352-17:30:00 End: 2018-353-17:30:00 Current yyyyddd: 2018352 (2018.96) ( 18471 MJD, TUES 18DEC.) =========================================================== First observations Observation listing from file t2129.skd for experiment T2129 Source Start DURATIONS name yyddd-hhmmss Sm 6a Ht Is Kb Kg Ma Ny Oh On Kv Sv Vm Wz Zc 1055+018 18352-173000| 111 30 111 99 100 | CTA102 18352-173000| 378 200 561 585 585 568 394 217 129| 2234+282 18352-191346| 119 132 132 94 39 100| Last observations 2134+00 18353-170653| 700 700 411 700 407 217 216| 0727-115 18353-170836| 30 108 39 108 | 0723-008 18353-171115| 169 90 169 152 55 | 2227-088 18353-171145| 108 54 108 43| 0235+164 18353-171448| 700 700 700 700 700 700 700 700 700 700 700| =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 8.4 Min = 0.0 Max = 90.0 (Baseline Oh-Kv on NRAO530 ) RMS = 8.4 Total time: 1437 minutes ( 24.0 hours). Key: Sm=CRIMEA 6a=DSS65A Ht=HART15M Is=ISHIOKA Kb=KASHIM34 Kg=KOGANEI Ma=MATERA Ny=NYALES20 Oh=OHIGGINS On=ONSALA60 Kv=SEJONG Sv=SVETLOE Vm=VERAMZSW Wz=WETTZELL Zc=ZELENCHK Sm 6a Ht Is Kb Kg Ma Ny Oh On Kv Sv Vm Wz Zc Avg % obs. time: 67 39 73 74 63 76 76 81 40 78 81 52 83 69 50 67 % cal. time: 2 2 2 3 3 3 2 2 1 3 3 3 2 4 3 3 % slew time: 25 21 11 5 28 7 18 10 4 14 12 40 9 11 41 18 % idle time: 5 37 13 16 6 13 3 6 54 3 3 4 5 16 5 13 total # scans: 173 165 201 292 260 270 203 198 85 246 246 291 205 348 283 231 # scans/hour : 7 7 8 12 11 11 8 8 4 10 10 12 9 15 12 10 Avg scan (sec): 333 203 312 219 208 241 325 352 405 275 283 155 347 170 152 264 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.92 0.54 1.00 1.02 0.86 1.04 1.05 1.12 0.55 1.08 1.11 0.72 1.14 0.95 0.69 0.92 # OF OBSERVATIONS BY BASELINE | Sm 6a Ht Is Kb Kg Ma Ny Oh On Kv Sv Vm Wz Zc Total ------------------------------------------------------------------------------------- Sm| 97 119 108 108 109 144 120 41 137 110 148 105 151 157 1654 6a| 101 77 76 75 118 98 40 127 78 133 73 154 126 1373 Ht| 95 92 96 136 102 67 130 97 141 85 173 146 1580 Is| 256 260 108 137 7 131 231 132 196 136 126 2000 Kb| 231 108 133 6 127 209 130 182 127 123 1908 Kg| 108 141 5 130 221 130 193 129 126 1954 Ma| 130 53 167 111 169 107 187 161 1807 Ny| 23 163 140 156 135 157 135 1770 Oh| 43 4 46 2 69 49 455 On| 132 194 127 225 168 2001 Kv| 135 184 128 128 1908 Sv| 127 262 247 2150 Vm| 113 117 1746 Wz| 243 2254 Zc| 2052 Number of 3-station scans: 148 Number of 4-station scans: 69 Number of 5-station scans: 59 Number of 6-station scans: 46 Number of 7-station scans: 37 Number of 8-station scans: 23 Number of 9-station scans: 17 Number of 10-station scans: 18 Number of 11-station scans: 11 Number of 12-station scans: 24 Number of 13-station scans: 46 Number of 14-station scans: 28 Total number of scans: 526 Total number of obs: 13306 Total integrated obs-time: 3176703 Average obs-time: 238.7 Histogram of observation durations =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: CRIMEA HART15M ISHIOKA KOGANEI MATERA NYALES20 SEJONG SVETLOE VERAMZSW WETTZELL 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: DSS65A KASHIM34 OHIGGINS ONSALA60 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 ===========================================================