IVS-T2060 (International VLBI Service - Terrestical Reference Frame Observations) 2009 Feb.03-04 doy 034-035 Institute for Geodesy and Geoinformation (IGG) of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2009 (master09.txt) 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 ) COMMENT ======= 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 one period. Session Notes for session: t2060 =========================================================== Parameter values for experiment T2060 Experiment description: IVS-T2.060 Scheduler: IGGB/Mueskens Correlator: HAYSTACK Nominal start: 2009-034-17:30:00 Nominal end: 2009-035-17:30:01 Current yyyyddd: 2009034 (2009.09) ( 14866 MJD, TUES 3FEB.) Greenwich sidereal time: 2:26: 0.00 (17:30: 0 UT) Sun's RA and DEC: 21h 9.9m -16d 19.7 =========================================================== First observations Observation listing from file t2060.skd for experiment T2060 Source Start DURATIONS name yyddd-hhmmss Ai Cc Ft Ho Kk Nt Oh Sm Tc Ts Ur Wz 2145+067 09034-173000| 488 64 693 693 119| 0727-115 09034-173506| 188 188 58 83 133 40 53 121| 1749+096 09034-173809| 40 40 | =========================================================== Last observations 0552+398 09035-170534| 162 206 145 206 40 40 85| OJ287 09035-170840| 100 40 71 100| 1144-379 09035-171258| 720 720 204 190 43 | 2145+067 09035-171303| 48 77 77| 0104-408 09035-171550| 166 166 | NRAO512 09035-171807| 40 40 | 0537-441 09035-171849| 52 52 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 3.6 Min = 0.0 Max = 80.0 (Baseline Kk-Ur on 1034-293) RMS = 7.7 Total time: 1430 minutes ( 23.8 hours). Key: Ai=AIRA Cc=CHICHI10 Ft=FORTLEZA Ho=HOBART26 Kk=KOKEE Nt=NOTO Oh=OHIGGINS Sm=CRIMEA Tc=TIGO Ts=TSUKUB32 Ur=URUMQI Wz=WETTZELL Ai Cc Ft Ho Kk Nt Oh Sm Tc Ts Ur Wz Avg % obs. time: 72 67 51 42 43 38 56 36 52 25 44 36 47 % cal. time: 2 2 1 2 2 2 1 2 1 4 3 2 2 % slew time: 5 4 18 24 12 31 10 27 3 15 23 7 15 % idle time: 20 26 29 30 42 27 31 34 43 55 29 53 36 total # scans: 157 145 101 179 195 204 114 174 105 308 222 204 175 # scans/hour : 6.6 6.1 4.2 7.5 8.2 8.6 4.8 7.3 4.4 12.9 9.3 8.6 7.4 Avg scan (sec): 394 396 436 203 188 161 425 175 424 71 169 152 265 Total GBytes: 1113 1034 792 653 660 590 871 480 801 392 677 559 719 Total GB(M5): 989 919 704 580 587 525 775 488 712 349 602 497 644 Total GBytes (M5) recorded: 7725.3 # OF OBSERVATIONS BY BASELINE | Ai Cc Ft Ho Kk Nt Oh Sm Tc Ts Ur Wz StnTotal -------------------------------------------------------------- Ai|157 109 0 79 76 23 0 23 0 150 95 30 585 Cc| 145 0 78 75 21 0 20 0 131 76 23 533 Ft| 101 9 17 54 48 26 55 2 10 41 262 Ho| 179 90 10 44 14 21 108 57 10 520 Kk| 195 17 17 20 35 132 71 34 584 Nt| 204 19 127 21 72 93 165 622 Oh| 114 10 73 6 1 15 233 Sm| 174 9 77 106 120 552 Tc| 105 4 0 17 235 Ts| 308 171 89 942 Ur| 222 109 789 Wz| 204 653 Total # of scans, observations: 605 3255 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 HOBART26 OHIGGINS TSUKUB32 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 80.00 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: CRIMEA Mode Tot.Rate Tot.BandW #chan #bits Barrel C 112.000 Mbits 56.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 2 14(*0) 28 270.00 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 8.000 6.000 14.000 Recording mode setup for: DSS45 KOKEE NOTO TIGOCONC URUMQI WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 128.000 Mbits 64.000 MHz 14 1 16 Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 16(*2) 32 80.00 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: FORTLEZA 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) 32 135.00 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 =========================================================== StatWt Abs 10.00 TTFFT FFFTT FFF =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 3) S-band (margin 3) Ai Cc Ft Ho Kk Nt Oh Sm Tc Ts Ur Ai Cc Ft Ho Kk Nt Oh Sm Tc Ts Ur Cc 20 Cc 22 Ft 20 20 Ft 22 22 Ho 20 20 20 Ho 22 22 20 Kk 20 20 20 25 Kk 22 22 20 23 Nt 20 20 20 25 25 Nt 22 22 20 23 23 Oh 20 20 20 20 20 20 Oh 18 18 18 18 18 18 Sm 20 20 20 25 25 25 20 Sm 22 22 20 23 23 23 18 Tc 19 19 19 19 19 19 19 19 Tc 18 18 18 18 18 18 18 18 Ts 20 20 20 25 25 25 20 25 19 Ts 22 22 20 23 23 23 18 23 18 Ur 20 20 20 25 25 25 20 25 19 25 Ur 22 22 20 23 23 23 18 23 18 23 Wz 20 20 20 25 25 25 20 25 19 25 25 Wz 22 22 20 23 23 23 18 23 18 23 23