IVS-T2051 (International VLBI Service - Terrestical Reference Frame Observations) 2007 July.31/Aug.01 doy 212/213 Institute for Geodesy and Geoinformation (IGG) of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2007 (master07.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 ) Procedures ========== NO PREPASS TIME: There is no time allowed in the schedule for prepassing tapes. Therefore all tapes needed for this experiment must be pre-checked before the start of this experiment. CONDITIONING: Conditioning has to be done before recording with all used Mark 5 module(s)/disk package(s). =========================================================== Experiment description: IVS-T2.051 Scheduler: IGGB/Mueskens Correlator: HAYSTACK Nominal start: 2007-212-17:30:00 Nominal end: 2007-213-17:30:01 Current yyyyddd: 2007212 (2007.58) ( 14313 MJD, TUES 31JUL.) Greenwich sidereal time: 14: 5: 0.00 (17:30: 0 UT) =========================================================== There are no observations for Wettzell from 18:15 U.T. to 19:45 U.T. Wettzell will participate in the intensive session during this 1.5 hour period. =========================================================== Observation listing from file t2051.skd for experiment T2051 Source Start DURATIONS name yyddd-hhmmss 13 Ft Gg Kb Mc Mh Sv Tc Ur Wf Wz Sm 0727-115 07212-173000| 40 385 385 163 | 1749+096 07212-173000| 40 40 47 40 47 40 | 0607-157 07212-173303| 103 103 | 0059+581 07212-173405| 40 40 53 40 53 40 | 0552+398 07212-174032| 40 533 394 533 103 162 254 | 1144-379 07212-174218| 720 720 | 1124-186 07212-174427| 81 81 | 1622-253 07212-174738| 40 40 | 2255-282 07212-175032| 101 101 | 1044+719 07212-175602| 72 67 251 75 477 477 144 285| =========================================================== Last observations name yyddd-hhmmss 13 Ft Gg Kb Mc Mh Sv Tc Ur Wf Wz Sm 0537-441 07213-170701| 103 377 377 | 1739+522 07213-170740| 96 44 265 54 226 265 104 | 0607-157 07213-170935| 106 106 | NRAO512 07213-171036| 41 40 40 41 | 1741-038 07213-171349| 40 40 40 40 40 40| 0823+033 07213-171539| 148 148 | 1622-253 07213-171548| 40 70 70 67| 3C274 07213-171707| 40 40 | 0656+082 07213-171856| 88 88 | CTA26 07213-172204| 40 40 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 3.4 Min = 0.0 Max = 90.0 (Baseline Tc-Ur on 2145+067) RMS = 7.0 Total time: 1433 minutes ( 23.9 hours). Key: 13=DSS13 Ft=FORTLEZA Gg=ORION_5M Kb=KASHIM34 Mc=MEDICINA Mh=METSAHOV Sv=SVETLOE Tc=TIGO Ur=URUMQI Wf=WESTFORD Wz=WETTZELL Sm=CRIMEA 13 Ft Gg Kb Mc Mh Sv Tc Ur Wf Wz Sm Avg % obs. time: 40 59 51 29 25 50 25 49 43 48 38 20 40 % cal. time: 3 1 1 2 3 2 3 1 2 2 2 1 2 % slew time: 26 22 3 26 33 26 38 4 22 10 8 10 20 % idle time: 30 17 44 41 37 21 33 46 32 39 51 68 39 total # scans: 258 120 122 212 256 160 247 96 197 198 214 66 178 # scans/hour : 10.8 5.0 5.1 8.9 10.7 6.7 10.3 4.0 8.2 8.3 9.0 2.8 7.5 Avg scan (sec): 133 426 358 117 85 267 87 436 187 208 153 257 225 Total GBytes: 618 919 786 448 391 769 387 754 665 742 588 267 611 Total GB(M5): 550 817 699 398 348 684 344 670 591 660 523 272 546 # of tapes : 1.0 6.2 1.4 3.1 0.6 1.3 0.6 1.3 1.1 1.2 0.9 2.1 # OF OBSERVATIONS BY BASELINE | 13 Ft Gg Kb Mc Mh Sv Tc Ur Wf Wz Sm StnTotal -------------------------------------------------------------- 13|258 57 92 69 72 30 77 59 42 126 56 20 700 Ft| 120 6 6 62 28 40 61 18 75 51 29 433 Gg| 122 18 22 20 23 0 8 58 22 9 278 Kb| 212 98 78 131 4 139 49 92 25 709 Mc| 256 132 202 25 123 102 197 58 1093 Mh| 160 142 10 112 52 125 53 782 Sv| 247 12 147 86 172 55 1087 Tc| 96 1 40 19 12 243 Ur| 197 44 118 44 796 Wf| 198 88 29 749 Wz| 214 54 994 Sm| 66 388 Total # of scans, observations: 558 4126 =========================================================== Recording mode Name Code EUR2-SX SX 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: DSS13 MEDICINA GGAO7108 SVETLOE TIGOCONC URUMQI WESTFORD 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 KASHIM34 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 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 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 =========================================================== Tape types ID Station Tape length Density Passes Sm CRIMEA 8700feet (Thick ) 33333 (Low ) 12 13 DSS13 17400feet (Thin ) 56250 (HIGH ) 14 Ft FORTLEZA 8700feet (Thick ) 33333 (Low ) 14 Kb KASHIM34 8700feet (Thick ) 33333 (Low ) 12 Mc MEDICINA 17400feet (Thin ) 56250 (HIGH ) 14 Mh METSAHOV 17400feet (Thin ) 56700 (HIGH ) 14 Gg GGAO7108 17400feet (Thin ) 56250 (HIGH ) 14 Sv SVETLOE 17400feet (Thin ) 56250 (HIGH ) 14 Tc TIGOCONC 17400feet (Thin ) 56250 (HIGH ) 14 Ur URUMQI 17400feet (Thin ) 56250 (HIGH ) 14 Wf WESTFORD 17400feet (Thin ) 56250 (HIGH ) 14 Wz WETTZELL 17400feet (Thin ) 56250 (HIGH ) 14 ===========================================================