IVS-T2048 (International VLBI Service - Terrestical Reference Frame Observations) 2006 Dec 05/06 doy 339/340 Geodetic Institute of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2006 (master06.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). =========================================================== Parameter values for experiment T2048 Experiment description: IVS-T2.048 Scheduler: BONN/Mueskens Correlator: see master06.txt file Nominal start: 2006-339-17:30:00 Nominal end: 2006-340-17:30:01 Current yyyyddd: 2006339 (2006.93) ( 14075 MJD, TUES 5DEC.) Greenwich sidereal time: 22:27:29.00 (17:30: 0 UT) Sun's RA and DEC: 16h 48.2m -22d 24.7 =========================================================== There are no observations for Wettzell from 18:30 U.T. to 19:45 U.T. Wettzell will participate in the intensive session during this one hour period. =========================================================== First observations Observation listing from file t2048.skd for experiment T2048 Source Start DURATIONS name yyddd-hhmmss 6a Ft Gg Hh Ho Kb Mc Mh Ny Nt On Sv Ur Wz Zc 0235+164 06339-173000| 207 57 46 215 80 215 52 145 101 53| 1741-038 06339-173000| 40 399 399 | 1034-293 06339-173417| 62 62 | 0607-157 06339-173645| 47 47 | 2243-123 06339-173645| 40 40 50 40 50 40 40 40| 0402-362 06339-174000| 114 114 | 1803+784 06339-174121| 292 118 46 292 120 84 225 56 185 101 60| End of listing. =========================================================== Last observations name yyddd-hhmmss 6a Ft Gg Hh Ho Kb Mc Mh Ny Nt On Sv Ur Wz Zc 0528+134 06340-170836| 40 95 65 95 40 40| 0235+164 06340-170838| 65 40 65 | 1034-293 06340-171149| 61 61 | 3C418 06340-171257| 93 93 | 1124-186 06340-171425| 42 42 | 2243-123 06340-171456| 40 50 40 50 40 40 40| 2136+141 06340-171602| 167 167 | 2128-123 06340-171714| 40 69 40 69 40 40 40| OJ287 06340-171747| 65 40 65 | 2255-282 06340-171938| 40 57 57 47| 0434-188 06340-172059| 165 165 | 0208-512 06340-172253| 120 120 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 3.8 Min = .0 Max = 110.8 (Baseline Kb-Sv on 2128-123) RMS = 5.6 Total time: 1435 minutes ( 23.9 hours). Key: 6a=DSS65A Ft=FORTLEZA Gg=ORION_5M Hh=HARTRAO Ho=HOBART26 Kb=KASHIM34 Mc=MEDICINA Mh=METSAHOV Ny=NYALES20 Nt=NOTO On=ONSALA60 Sv=SVETLOE Ur=URUMQI Wz=WETTZELL Zc=ZELENCHK 6a Ft Gg Hh Ho Kb Mc Mh Ny Nt On Sv Ur Wz Zc Avg % obs. time: 17 41 31 38 27 39 29 52 33 42 49 30 52 43 30 37 % cal. time: 3 2 1 2 2 2 3 2 2 3 2 3 2 2 3 2 % slew time: 52 22 1 33 27 28 25 24 8 25 11 33 17 6 33 23 % idle time: 27 34 66 27 43 30 41 22 56 29 38 33 28 48 33 38 total # scans: 234 133 59 156 152 213 253 146 136 216 158 236 166 198 234 179 # scans/hour : 9.8 5.6 2.5 6.5 6.4 8.9 10.6 6.1 5.7 9.0 6.6 9.9 6.9 8.3 9.8 7.5 Avg scan (sec): 64 267 455 210 155 156 100 304 212 169 267 108 270 188 109 201 Total GBytes: 270 639 483 590 425 599 455 799 519 657 758 458 808 670 458 572 Total GB(M5): 240 568 429 524 377 533 404 710 461 584 674 407 718 595 407 509 # of tapes : .4 4.0 .9 1.0 .7 4.3 .8 1.4 .9 1.1 1.3 .7 1.4 1.1 .8 Total number of tapes: 20.7 Total GBytes (M5) recorded: 7632.8 # OF OBSERVATIONS BY BASELINE | 6a Ft Gg Hh Ho Kb Mc Mh Ny Nt On Sv Ur Wz Zc StnTotal -------------------------------------------------------------------------- 6a|234 64 23 55 4 51 187 83 81 155 103 148 81 139 153 1327 Ft| 133 23 62 9 4 53 29 25 50 38 40 16 43 39 495 Gg| 59 3 3 16 13 10 12 9 13 15 2 11 8 161 Hh| 156 52 16 64 32 22 65 42 43 33 56 58 603 Ho| 152 87 9 2 3 7 2 4 32 6 14 234 Kb| 213 78 60 65 61 50 95 91 57 83 814 Mc| 253 117 114 192 130 203 113 181 205 1659 Mh| 146 100 94 111 129 80 99 114 1060 Ny| 136 95 94 123 91 98 110 1033 Nt| 216 106 159 104 166 172 1435 On| 158 128 75 112 119 1123 Sv| 236 113 147 195 1542 Ur| 166 99 120 1050 Wz| 198 152 1366 Zc| 234 1542 Total # of scans, observations: 574 7722 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: DSS65A HARTRAO MEDICINA NOTO NYALES20 ONSALA60 GGAO7108 SVETLOE URUMQI WETTZELL ZELENCHK 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: HOBART26 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: 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 6a DSS65A 17400feet (Thin ) 56250 (HIGH ) 14 Ft FORTLEZA 8700feet (Thick ) 33333 (Low ) 14 Hh HARTRAO 17400feet (Thin ) 56250 (HIGH ) 14 Ho HOBART26 17400feet (Thin ) 56250 (HIGH ) 14 Kb KASHIM34 8700feet (Thick ) 33333 (Low ) 12 Mc MEDICINA 17400feet (Thin ) 56250 (HIGH ) 14 Mh METSAHOV 17400feet (Thin ) 56700 (HIGH ) 14 Nt NOTO 17400feet (Thin ) 56250 (HIGH ) 14 Ny NYALES20 17400feet (Thin ) 56250 (HIGH ) 14 On ONSALA60 17400feet (Thin ) 56250 (HIGH ) 14 Gg GGAO7108 17400feet (Thin ) 56250 (HIGH ) 14 Sv SVETLOE 17400feet (Thin ) 56250 (HIGH ) 14 Ur URUMQI 17400feet (Thin ) 56250 (HIGH ) 14 Wz WETTZELL 17400feet (Thin ) 56250 (HIGH ) 14 Zc ZELENCHK 17400feet (Thin ) 56250 (HIGH ) 14 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 3) S-band (margin 3) 6a Ft Gg Hh Ho Kb Mc Mh Ny Nt On Sv Ur Wz 6a Ft Gg Hh Ho Kb Mc Mh Ny Nt On Sv Ur Wz Ft 22 Ft 22 Gg 18 22 Gg 16 22 Hh 25 22 18 Hh 25 22 16 Ho 25 22 18 25 Ho 25 22 16 25 Kb 25 22 18 25 25 Kb 25 22 16 25 25 Mc 25 22 18 25 25 25 Mc 25 22 16 25 25 25 Mh 22 22 22 22 22 22 22 Mh 22 22 22 22 22 22 22 Ny 25 22 18 25 25 25 25 22 Ny 25 22 16 25 25 25 25 22 Nt 25 22 18 25 25 25 25 22 25 Nt 25 22 16 25 25 25 25 22 25 On 25 22 18 25 25 25 25 22 25 25 On 25 22 16 25 25 25 25 22 25 25 Sv 25 22 18 25 25 25 25 22 25 25 25 Sv 25 22 16 25 25 25 25 22 25 25 25 Ur 25 22 18 25 25 25 25 22 25 25 25 25 Ur 25 22 16 25 25 25 25 22 25 25 25 25 Wz 25 22 18 25 25 25 25 22 25 25 25 25 25 Wz 25 22 16 25 25 25 25 22 25 25 25 25 25 Zc 25 22 18 25 25 25 25 22 25 25 25 25 25 25 Zc 25 22 16 25 25 25 25 22 25 25 25 25 25 25