IVS-T2035 (International VLBI Service - Terrestical Reference Frame Observations) 2004 Nov. 16/17 doy 321/322 Geodetic Institute of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2004 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 SKED ((NRV/JMG 2004May05) using the EUR-SX band and the EURSX-C-2 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 ) 70% 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. Remark/Comment ============== Mh = METSAHOV station was scheduled in the tag-along mode! Ho = Hobart station will lost the last 4.5 hours due to a Huygens test for general rehearsal commencing. =========================================================== Parameter values for experiment T2035 Experiment description: IVS-T2.035 Scheduler: BONN/Mueskens Nominal start: 2004-321-17:30:00 Nominal end: 2004-322-17:30:01 Current yyyyddd: 2004321 (2004.88) ( 13326 MJD, TUES 16NOV.) Greenwich sidereal time: 21:14:29.00 (17:30: 0 UT) Sun's RA and DEC: 15h 29.4m -18d 56.7 =========================================================== There are no observations for Kokee and Wettzell from 18:00 U.T. to 20:00 U.T. Kokee and Wettzell will participate in the intensive session during this two hour period. =========================================================== First observations Observation listing from file t2035.skd for experiment T2035 Source Start DURATIONS name yyddd-hhmmss Ap Ft Hh Ho Kb Mh Oh Gg Sv Tc Ur Wz 1741-038 04321-173000| 344 451 218 451 | 0552+398 04321-173000| 40 40 40 | 0119+115 04321-173324| 68 100 100 | 0405-385 04321-173654| 54 54 | CTA26 04321-173925| 40 40 40 | 2201+315 04321-173928| 93 93 | 0208-512 04321-173958| 760 760 760 | 1334-127 04321-180000| 331 331 | End of listing. =========================================================== name yyddd-hhmmss Ap Ft Hh Ho Kb Mh Oh Gg Sv Tc Ur Wz 1741-038 04322-164912| 226 226 | 0133+476 04322-164913| 48 61 128 128| 0749+540 04322-165317| 86 171 171| 0235+164 04322-171146| 279 198 82 279 141| 2134+00 04322-171546| 40 40 40| 1908-201 04322-171750| 48 48 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 2.1 Min = .0 Max = 102.9 (Baseline Kb-Wz on 0607-157) RMS = 5.4 Total time: 1428 minutes ( 23.8 hours). Key: Ap=ALGOPARK Ft=FORTLEZA Hh=HARTRAO Ho=HOBART26 Kb=KASHIM34 Mh=METSAHOV Oh=OHIGGINS Gg=ORION_5M Sv=SVETLOE Tc=TIGO Ur=URUMQI Wz=WETTZELL Ap Ft Hh Ho Kb Mh Oh Gg Sv Tc Ur Wz Avg % obs. time: 32 54 51 45 37 8 36 16 34 12 48 48 35 % cal. time: 2 1 1 1 2 0 0 0 2 0 2 2 1 % slew time: 56 20 29 19 27 1 6 2 38 0 24 7 19 % idle time: 8 23 18 33 32 89 56 80 24 86 24 42 43 total # scans: 212 123 129 106 226 18 60 72 248 18 217 190 134 # scans/hour : 8 5 5 4 9 0 2 3 10 0 9 7 5.6 Avg scan (sec): 131 378 339 366 142 395 525 199 118 587 191 217 299 Total GBytes: 219 366 344 305 253 56 248 112 232 83 327 325 240 Total GB(M5): 222 372 350 310 257 56 252 114 235 84 332 330 243 # of tapes : .5 3.2 .8 .7 2.0 .1 .6 .3 1.8 .2 .7 .7 tape change times (hhmm): 0000 0119 0000 0000 0506 0000 0000 0000 0547 0000 0000 0000 0000 0819 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 1531 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 Total number of tapes: 11.6 Total GBytes (M5) recorded: 2921.0 # OF OBSERVATIONS BY BASELINE | Ap Ft Hh Ho Kb Mh Oh Gg Sv Tc Ur Wz StnTotal -------------------------------------------------------------- Ap|212 59 15 1 52 6 14 70 83 4 54 67 425 Ft| 123 59 7 3 4 10 0 38 8 14 40 242 Hh| 129 22 18 4 19 0 46 3 36 54 276 Ho| 106 59 2 27 0 8 2 26 5 159 Kb| 226 7 4 2 126 2 159 72 504 Mh| 18 0 1 15 1 9 12 61 Oh| 60 0 4 2 2 4 86 Gg| 72 4 0 0 0 77 Sv| 248 3 148 162 637 Tc| 18 0 3 28 Ur| 217 101 549 Wz| 190 520 Number of 2-station scans: 325 Number of 3-station scans: 122 Number of 4-station scans: 83 Number of 5-station scans: 38 Number of 6-station scans: 10 Number of 7-station scans: 3 Number of 8-station scans: 0 Number of 9-station scans: 0 Number of 10-station scans: 0 Number of 11-station scans: 0 Number of 12-station scans: 0 Total # of scans, observations: 581 1782 =========================================================== Recording mode Name Code EUR-SX SX Recording mode setup for: ALGOPARK HARTRAO HOBART26 METSAHOV OHIGGINS GGAO7108 TIGOCONC URUMQI WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 80.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 85.0 MHz rms spanned bw= 33.0 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 Recording mode setup for: FORTLEZA KASHIM34 SVETLOE Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 135.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 85.0 MHz rms spanned bw= 33.0 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 =========================================================== Monitoring Sources Source Min Max Actual Num 0405-385 3.00 100.00 1.07 19 1034-293 3.00 100.00 .95 17 1622-253 5.00 100.00 .00 0 1622-297 5.00 100.00 3.42 61 Total 5.44 97 =========================================================== Tape types ID Station Tape length Speed Ap ALGOPARK 17400feet (Thin ) 56250. (High) 12 Ft FORTLEZA 8700feet (Thick ) 33333. (Low ) 12 Hh HARTRAO 17400feet (Thin ) 56250. (High) 12 Ho HOBART26 17400feet (Thin ) 56250. (High) 12 Kb KASHIM34 8700feet (Thick ) 33333. (Low ) 12 Mh METSAHOV 17400feet (Thin ) 56250. (High) 12 Oh OHIGGINS 17400feet (Thin ) 56250. (High) 12 Gg GGAO7108 17400feet (Thin ) 56250. (High) 12 Sv SVETLOE 8700feet (Thick ) 33333. (Low ) 12 Tc TIGOCONC 17400feet (Thin ) 56250. (High) 12 Ur URUMQI 17400feet (Thin ) 56250. (High) 12 Wz WETTZELL 17400feet (Thin ) 56250. (High) 12 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 3) Ap Ft Hh Ho Kb Mh Oh Gg Sv Tc Ur Ap Ft Hh Ho Kb Mh Oh Gg Sv Tc Ur Ft 20 Ft 20 Hh 20 20 Hh 20 20 Ho 20 20 20 Ho 20 20 20 Kb 20 20 20 20 Kb 20 20 20 20 Mh 20 20 20 20 20 Mh 20 20 20 20 20 Oh 20 20 20 20 20 20 Oh 20 20 20 20 20 20 Gg 20 20 20 20 20 20 20 Gg 20 20 20 20 20 20 20 Sv 20 20 20 20 20 20 20 20 Sv 20 20 20 20 20 20 20 20 Tc 20 20 20 20 20 20 20 20 20 Tc 20 20 20 20 20 20 20 20 20 Ur 20 20 20 20 20 20 20 20 20 20 Ur 20 20 20 20 20 20 20 20 20 20 Wz 20 20 20 20 20 20 20 20 20 20 20 Wz 20 20 20 20 20 20 20 20 20 20 20