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 Participating stations: =========== AIRA BADARY CHICHI10 CRIMEA DSS15 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 Ai Bd Cc Sm 15 Ft Hh K1 Km Kg Ma Mh Ny Sh Ur Vs Vm Ww Wz 0537-441 12087-173000| 20 20 | 2145+067 12087-173000| 43 43 | 4C39.25 12087-173000| 161 20 180 90 121 20 70 141 255 44 26 21 255 214 54| Last observations 1156+295 12088-170810| 720 65 720 376 720 53 395 489 258 100 165 678 260| 1954-388 12088-170917| 533 533 | 3C345 12088-171554| 60 60 | 0552+398 12088-171913| 20 22 39 20 20 39 25 20| 0229+131 12088-172218| 246 217 246 155 115| 1334-127 12088-172250| 85 322 322 60 322 123 212 | 1104-445 12088-172512| 53 53 | 2243-123 12088-172607| 52 52 | 0119+115 12088-172640| 71 71 51| =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 2.1 Min = 0.0 Max = 120.0 (Baseline Ft-Sh on 0727-115) RMS = 5.9 Total time: 1438 minutes ( 24.0 hours). Key: Ai=AIRA Bd=BADARY Cc=CHICHI10 Sm=CRIMEA 15=DSS15 Ft=FORTLEZA Hh=HARTRAO K1=KASHIM11 Km=KUNMING Kg=KOGANEI Ma=MATERA Mh=METSAHOV Ny=NYALES20 Sh=SESHAN25 Ur=URUMQI Vs=VERAISGK Vm=VERAMZSW Ww=WARK12M Wz=WETTZELL Ai Bd Cc Sm 15 Ft Hh K1 Km Kg Ma Mh Ny Sh Ur Vs Vm Ww Wz Avg % obs. time: 60 17 60 42 27 34 24 56 20 47 40 40 35 27 34 52 47 26 30 38 % cal. time: 2 3 2 2 3 2 2 2 3 3 2 1 3 3 3 1 2 1 3 2 % slew time: 6 42 5 32 39 29 31 8 33 9 20 24 16 34 30 6 7 3 9 21 % idle time: 31 37 32 22 30 34 42 33 43 40 36 33 46 35 32 39 43 70 57 39 total # scans: 166 273 149 204 255 182 150 211 299 249 209 129 227 293 265 127 139 89 245 203 # scans/hour : 7 11 6 9 11 8 6 9 12 10 9 5 9 12 11 5 6 4 10 8 Avg scan (sec): 313 52 348 178 91 163 140 230 57 162 164 269 132 79 111 351 293 247 105 183 # 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: 937 256 932 655 418 535 378 875 309 726 618 624 539 417 529 803 733 396 462 586 Total GB(M5): 833 228 828 582 371 476 336 778 274 645 550 555 479 371 470 714 652 352 411 521 Total GBytes (M5) recorded: 9904.1 # OF OBSERVATIONS BY BASELINE | Ai Bd Cc Sm 15 Ft Hh K1 Km Kg Ma Mh Ny Sh Ur Vs Vm Ww Wz StnTotal --------------------------------------------------------------------------------------------------------- Ai| 91 121 55 44 0 14 123 107 120 43 36 61 132 86 79 72 10 50 1244 Bd| 83 117 77 11 40 108 213 139 98 65 148 197 210 73 67 12 119 1868 Cc| 49 45 0 13 114 96 113 37 30 55 112 85 73 72 11 47 1156 Sm| 47 40 67 65 113 73 161 71 125 94 127 31 27 2 154 1418 15| 95 11 53 61 60 48 39 94 68 63 25 32 59 70 991 Ft| 80 2 14 2 61 29 42 6 21 0 0 4 69 476 Hh| 15 49 17 70 30 30 33 53 12 7 11 67 619 K1| 123 193 50 38 76 149 113 83 93 10 60 1468 Km| 156 91 51 120 232 216 96 77 20 113 1948 Kg| 59 39 94 187 145 85 112 12 71 1677 Ma| 69 120 76 111 27 24 0 166 1311 Mh| 82 50 63 32 31 1 80 836 Ny| 116 138 40 33 6 154 1534 Sh| 192 108 92 19 93 1956 Ur| 73 63 8 128 1895 Vs| 74 8 26 945 Vm| 10 22 908 Ww| 0 203 Wz| 1489 Total # of scans, observations: 809 11971 =========================================================== 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 ===========================================================