IVS-OHIG36 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2005 Jan.26/27 Geodetic Institute of the University of Bonn, Germany Correlator: see Multi Agency Schedule 2005 Purpose ======= The purpose of the CORE-OHIG (Southern Terrestrial Reference Frame) sessions is to tie together optimally the sites in the southern hemisphere. The participating sites include all the sites in the south F Ft FORTLEZA Mark3A/ thick tape H Ho HOBART26 Mark5 only J Hh HartRao Mark4/ thin tape A Kk KOKEE VLBA/ thin tape P Oh OHIGGINS VLBA4/ thin tape C Tc TIGOCONC VLBA4/ thin tape S Sy Syowa/Jap K5/ Mk5 Because these sessions concentrate on the southern sites and do not use observing time to accurately tie these sites to far northern sites (as the Global Sessions do) they should yield a very accurate regional TRF around the South Pole. Schedule ======== This is a schedule generated with the automatic mode of sked using the variable scan length with a minimum of 90 seconds. The most recent and updated source flux models are included. SNR goals are 20/20 at X-band and 20/20 at S-band for all stations. The predicted SNRs used include a 30 ps noise contribution added in quadrature, which is a typical size for the reweight constants size for the reweight constants required in SOLVE solutions. This schedule was optimized by different features: - the covariance analysis during schedule generation considers the previous 2 hours of observations, - minor SKED optimization parameters . maximum number of observations, 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 25 min - use of CvgONLY in order to improve the geometry of observation This schedule was made using 60 sources which helped improve the sky coverage. Procedures ========== Please generate the procedures for this session using drudg. Except of Syowa station who have to prepare K4 setup procedures with the existing skd file. 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. FREQUENCY SEQUENCE: The standard EUR2-SX(2Mhz) frequency sequence is used for all CORE-OHIG experiments. Remark ====== Syowa tapes or Mk5 disk will need probably one year or more before they are received at Correlator side. On this account all participate stations should recorded data on magnetic tape (except of Hobart). The present world wide Mk5 unit situation, forced us to handle in this way. Parameter values for experiment OHIG36 Experiment description: IVS-OHIG36 Scheduler: mueskens Nominal start: 2005-026-18:00:00 Nominal end: 2005-027-18:00:01 Current yyyyddd: 2005026 (2005.07) ( 13397 MJD, WED. 26JAN.) Greenwich sidereal time: 2:24:30.00 (18: 0: 0 UT) Sun's RA and DEC: 20h 37.1m -18d 33.0 =========================================================== 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 ohig36.skd for experiment OHIG36 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Sy Tc 0106+013 05026-180000| 720 720| 0727-115 05026-180000| 110 100 110 | 0537-441 05026-180425| 720 720 720 | 0607-157 05026-181849| 313 307 313 | 0528+134 05026-182629| 720 151 720 | 0823+033 05026-183155| 283 283 | 0727-115 05026-183912| 108 108 | 1424-418 05026-184143| 303 303 | CTA26 05026-184434| 720 720 720 | 1741-038 05026-185019| 203 203| 1749+096 05026-185425| 561 561| =========================================================== Last observations name yyddd-hhmmss Ft Hh Ho Kk Oh Sy Tc 2145+067 05027-172735| 686 686 | 0727-115 05027-173201| 111 100 111 | 0454-234 05027-173654| 73 73 | 1741-038 05027-173900| 175 175| 0823+033 05027-174208| 275 275 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 2.7 Min = .0 Max = 37.2 (Baseline Hh-Ho on 1741-038) RMS = 6.4 Total time: 1426 minutes ( 23.8 hours). Key: Ft=FORTLEZA Hh=HARTRAO Ho=HOBART26 Kk=KOKEE Oh=OHIGGINS Sy=SYOWA Tc=TIGO Ft Hh Ho Kk Oh Sy Tc Avg % obs. time: 56 53 58 55 40 55 49 52 % cal. time: 1 1 2 1 0 1 0 1 % slew time: 18 31 27 5 5 2 2 13 % idle time: 24 13 11 37 53 41 46 32 total # scans: 104 138 172 137 53 116 73 113 # scans/hour : 4.4 5.8 7.2 5.8 2.2 4.9 3.1 4.8 Avg scan (sec): 464 331 292 346 649 408 582 438 Total GBytes: 380 360 396 373 271 373 334 356 Total GB(M5): 386 365 402 379 275 379 340 361 # of tapes : 3.2 .8 .9 .8 .6 .9 .8 tape change times (hhmm): 0144 0000 0000 0000 0000 0000 0000 0918 0000 0000 0000 0000 0000 0000 1631 0000 0000 0000 0000 0000 0000 Total number of tapes: 8.0 Total GBytes (M5) recorded: 2529.4 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Sy Tc StnTotal ------------------------------------------ Ft|104 49 1 31 19 22 38 160 Hh| 138 60 0 25 89 8 231 Ho| 172 77 27 70 8 243 Kk| 137 13 7 41 169 Oh| 53 9 0 93 Sy| 116 0 197 Tc| 73 95 Number of 2-station scans: 219 Number of 3-station scans: 105 Number of 4-station scans: 10 Number of 5-station scans: 0 Number of 6-station scans: 0 Number of 7-station scans: 0 Total # of scans, observations: 334 594 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: FORTLEZA 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= 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: HARTRAO HOBART26 KOKEE OHIGGINS SYOWA TIGOCONC 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= 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 =========================================================== Minor Options Option Norm Wt Aux_Parm BegScan Rel 1.00 EndScan Rel 1.00 NumObs Rel 1.00 StatWt Abs 1.00 FFFFT TT =========================================================== Major Options SkyCov YES Min_Between 25 Best% 70.0 Last_Hrs 1.00 Add_ps 30.00 Obs_Wts SNRwt =========================================================== Tape types ID Station Tape length Density Passes Ft FORTLEZA 8700feet (Thick ) 33333 (Low ) 12 Hh HARTRAO 17400feet (Thin ) 56250 (HIGH ) 12 Ho HOBART26 17400feet (Thin ) 56250 (HIGH ) 12 Kk KOKEE 17400feet (Thin ) 56250 (HIGH ) 12 Oh OHIGGINS 17400feet (Thin ) 56250 (HIGH ) 12 Sy SYOWA 17400feet (Thin ) 56250 (HIGH ) 12 Tc TIGOCONC 17400feet (Thin ) 56250 (HIGH ) 12 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 5) Ft Hh Ho Kk Oh Sy Ft Hh Ho Kk Oh Sy Hh 20 Hh 20 Ho 20 20 Ho 20 20 Kk 20 20 20 Kk 20 20 20 Oh 20 20 20 20 Oh 20 20 20 20 Sy 20 20 20 20 20 Sy 20 20 20 20 20 Tc 20 20 20 20 20 20 Tc 20 20 20 20 20 20