IVS-T2082 (International VLBI Service - Terrestical Reference Frame Observations) 2012 March,27/28 doy 087-088 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 17h30 UT Nominal End Time: 17h30 UT Duration: 24.0 hr Correlator: BONN sked T2082_new Participating stations: =========== AIRA BADARY CHICHI10 CRIMEA DSS13 FORTLEZA HARTRAO KSHIM11 KUNMING KOGANEI MATERA METSAHOV SESHAN25 NYALES20 URUMQI VERAISGK VERAMZSW WETTZELL WARK12M 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 20 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 40 sec. and the most recent source flux models are included. SNR goals are 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 - using 63 source for improving the sky covorage (and some new astrometric sources / see $ASTROMETRIC ) Session Notes for session: t2082 =========================================================== Experiment: T2082 Description IVS-T2.082 Scheduler: IGGB/Muesk Correlator: BONN Start: 2012-087-17:30:00 End: 2012-088-17:30:01 Current yyyyddd: 2012087 (2012.24) ( 16014 MJD, TUES 27MAR.) =========================================================== 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 ./t2082.skd for experiment T2082 Source Start DURATIONS name yyddd-hhmmss 15 Ai Bd Cc Ft Hh K1 Kg Km Ma Mh Ny Sh Sm Ur Vm Vs Ww Wz 0537-441 12087-173000| 20 20 | 2145+067 12087-173000| 20 20 | 4C39.25 12087-173000| 161 20 180 121 70 20 141 255 44 26 90 21 214 255 54| Last observations 1749+096 12088-171834| 40 478 41 480 307 190 38 74 480 | NRAO512 12088-172113| 79 121 125 309 285 266 309 | CTA26 12088-172147| 82 82 50| 0637-752 12088-172251| 103 103 | 1424-418 12088-172422| 169 169 | NRAO150 12088-172457| 40 40 24| 2136+141 12088-172519| 61 61 | 1104-445 12088-172554| 53 53 | 2243-123 12088-172738| 52 52 | 1255-316 12088-172816| 71 71 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 2.1 Min = 0.0 Max = 72.0 (Baseline Sm-Vm on 1622-253) RMS = 5.8 Total time: 1440 minutes ( 24.0 hours). Key: 15=DSS15 Ai=AIRA Bd=BADARY Cc=CHICHI10 Ft=FORTLEZA Hh=HARTRAO K1=KASHIM11 Kg=KOGANEI Km=KUNMING Ma=MATERA Mh=METSAHOV Ny=NYALES20 Sh=SESHAN25 Sm=CRIMEA Ur=URUMQI Vm=VERAMZSW Vs=VERAISGK Ww=WARK12M Wz=WETTZELL 15 Ai Bd Cc Ft Hh K1 Kg Km Ma Mh Ny Sh Sm Ur Vm Vs Ww Wz Avg % obs. time: 22 60 16 58 34 24 55 46 19 42 36 35 28 42 36 53 45 35 27 38 % cal. time: 3 2 3 2 2 2 2 3 3 2 1 3 3 2 3 1 2 1 3 2 % slew time: 38 6 43 5 27 30 7 9 32 20 21 16 35 30 29 7 7 5 9 20 % idle time: 36 32 36 35 36 44 34 41 44 35 40 45 33 25 31 37 45 57 60 40 total # scans: 262 156 273 143 161 134 200 243 297 201 116 239 299 194 255 125 131 129 236 199 # scans/hour : 11 7 11 6 7 6 8 10 12 8 5 10 12 8 11 5 5 5 10 8 Avg scan (sec): 71 331 52 349 183 153 239 163 57 181 270 128 81 187 122 365 298 237 100 187 # data tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total GBytes: 337 928 255 899 531 368 862 714 302 655 563 551 433 652 561 821 702 550 426 585 Total GB(M5): 299 825 227 799 472 327 766 634 269 583 500 490 385 580 498 730 624 489 378 520 Total GBytes (M5) recorded: 9875.2 # OF OBSERVATIONS BY BASELINE | 15 Ai Bd Cc Ft Hh K1 Kg Km Ma Mh Ny Sh Sm Ur Vm Vs Ww Wz StnTotal --------------------------------------------------------------------------------------------------------- 15| 52 88 47 72 7 62 74 74 51 40 114 90 43 77 40 32 71 73 1107 Ai| 87 125 0 17 126 128 111 46 26 67 132 52 90 83 72 20 42 1276 Bd| 82 10 38 110 140 205 95 62 163 196 116 209 67 69 22 110 1869 Cc| 0 16 122 121 101 37 23 57 119 44 82 81 68 19 34 1178 Ft| 77 1 1 11 57 27 38 3 42 17 0 0 10 63 429 Hh| 19 20 39 70 29 34 26 61 40 10 13 11 67 594 K1| 183 126 52 29 79 149 61 111 103 69 18 54 1474 Kg| 157 57 32 100 188 69 131 111 82 24 64 1682 Km| 90 54 130 239 112 201 77 98 43 97 1965 Ma| 64 115 74 152 97 28 24 0 159 1268 Mh| 74 49 61 66 21 26 1 77 761 Ny| 129 118 150 51 40 8 146 1613 Sh| 93 187 92 116 38 82 2002 Sm| 122 33 31 1 144 1355 Ur| 66 71 18 113 1848 Vm| 65 16 26 970 Vs| 20 25 921 Ww| 0 340 Wz| 1376 Total # of scans, observations: 768 12014 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA BADARY CHICHI10 CRIMEA DSS15 FORTLEZA HARTRAO KASHIM11 KUNMING KOGANEI MATERA NYALES20 SESHAN25 URUMQI VERAISGK VERAMZSW WARK12M WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 128.000 Mbits 64.000 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 channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: METSAHOV Mode Tot.Rate Tot.BandW #chan #bits Barrel VLBA1:2 128.000 Mbits 64.000 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 channels recorded per sub-pass X S Total 10.000 6.000 16.000 ===========================================================