IVS-OHIG41 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2005 Nov. 320/321 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 Mark5 only 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 VLBA/ 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 60 seconds. The most recent and updated source flux models are included. SNR goals are 20/18 at X-band and 20/18 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 20 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 and FortLeza). The present world wide Mk5 unit situation, forced us to handle in this way. =========================================================== Parameter values for experiment OHIG41 Experiment description: IVS-OHIG41 Scheduler: mueskens Correlator: BONN Nominal start: 2005-320-18:00:00 Nominal end: 2005-321-18:00:01 Current yyyyddd: 2005320 (2005.88) ( 13691 MJD, WED. 16NOV.) Greenwich sidereal time: 21:43:37.00 (18: 0: 0 UT) Sun's RA and DEC: 15h 28.5m -18d 53.4 =========================================================== There are no observations for Kokee from 19:00 U.T. to 20:00 U.T. Kokee will participate in the intensive session during this one hour period. =========================================================== First observations Observation listing from file ohig41.skd for experiment OHIG41 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Sy Tc 0727-115 05320-180000| 60 60 | 1921-293 05320-180000| 614 720 720| 2128-123 05320-180000| 90 90 | 0003-066 05320-180413| 232 232 | =========================================================== Last observations 1741-038 05321-172935| 378 217 720 720| 0537-441 05321-173451| 60 60 | OJ287 05321-173843| 156 156 | 0208-512 05321-173932| 163 163 | 1739+522 05321-174247| 384 384 | 0637-752 05321-174438| 291 291 | 1954-388 05321-174718| 167 167 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 3.1 Min = .0 Max = 34.0 (Baseline Hh-Oh on 1741-038) RMS = 6.8 Total time: 1430 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: 54 39 46 44 65 68 50 52 % cal. time: 1 1 2 1 1 1 0 1 % slew time: 19 31 32 6 9 2 2 14 % idle time: 24 27 18 47 23 27 45 30 total # scans: 126 144 191 141 106 126 74 129 # scans/hour : 5.3 6.0 8.0 5.9 4.4 5.3 3.1 5.4 Avg scan (sec): 372 236 209 269 532 467 587 381 Total GBytes: 369 268 315 299 444 463 342 358 Total GB(M5): 375 272 320 303 451 470 348 363 # of tapes : 3.2 .6 .7 .7 1.0 1.1 .8 tape change times (hhmm): 0150 0000 0000 0000 1729 1605 0000 0843 0000 0000 0000 0000 0000 0000 1605 0000 0000 0000 0000 0000 0000 Total number of tapes: 8.0 Total GBytes (M5) recorded: 2542.6 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Sy Tc StnTotal ------------------------------------------ Ft|126 75 14 27 57 47 31 251 Hh| 144 52 0 49 79 20 275 Ho| 191 101 49 63 17 296 Kk| 141 17 8 30 183 Oh| 106 69 34 275 Sy| 126 22 288 Tc| 74 154 Number of 2-station scans: 230 Number of 3-station scans: 67 Number of 4-station scans: 35 Number of 5-station scans: 19 Number of 6-station scans: 2 Number of 7-station scans: 0 Total # of scans, observations: 353 861 =========================================================== 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 =========================================================== Monitoring Sources Total .00 0 0 =========================================================== 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 20 Best% 65.0 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 18 18 18 18 Oh 18 18 18 18 Sy 18 18 18 18 18 Sy 18 18 18 18 18 Tc 20 20 20 20 18 18 Tc 20 20 20 20 18 18