IVS-OHIG40 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2005 Nov. 313/314 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 OHIG40 Experiment description: IVS-OHIG40 Scheduler: mueskens Correlator: BONN Nominal start: 2005-313-18:00:00 Nominal end: 2005-314-18:00:01 Current yyyyddd: 2005313 (2005.86) ( 13684 MJD, WED. 9NOV.) Greenwich sidereal time: 21:16: 1.00 (18: 0: 0 UT) Sun's RA and DEC: 14h 59.9m -17d 2.1 =========================================================== 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 ohig40.skd for experiment OHIG40 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Sy Tc 0607-157 05313-180000| 60 60 | 1741-038 05313-180000| 60 60 | 1921-293 05313-180000| 579 720 720| =========================================================== Last observations 1921-293 05314-173012| 720 720| 0208-512 05314-173302| 720 720 720 | 1334-127 05314-173406| 99 99 | 1803+784 05314-174236| 331 331 | 0537-441 05314-174703| 81 153 153 | 2136+141 05314-175030| 269 269 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 3.1 Min = .0 Max = 38.0 (Baseline Kk-Tc on 0727-115) RMS = 6.8 Total time: 1435 minutes ( 23.9 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: 52 39 47 47 65 64 53 52 % cal. time: 1 1 2 1 1 1 0 1 % slew time: 18 29 32 6 9 2 3 14 % idle time: 26 29 18 43 23 31 42 30 total # scans: 123 141 189 147 103 120 80 129 # scans/hour : 5.1 5.9 7.9 6.1 4.3 5.0 3.3 5.4 Avg scan (sec): 370 240 215 277 551 464 572 384 Total GBytes: 358 267 320 321 446 439 360 359 Total GB(M5): 364 271 325 326 454 446 366 365 # of tapes : 3.4 .6 .7 .8 1.0 1.0 .9 tape change times (hhmm): 0103 0000 0000 0000 1726 1706 0000 0801 0000 0000 0000 0000 0000 0000 1504 0000 0000 0000 0000 0000 0000 Total number of tapes: 8.4 Total GBytes (M5) recorded: 2554.6 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Sy Tc StnTotal ------------------------------------------ Ft|123 73 16 29 55 46 30 249 Hh| 141 53 0 50 77 16 269 Ho| 189 100 48 58 22 297 Kk| 147 19 4 37 189 Oh| 103 70 32 274 Sy| 120 22 277 Tc| 80 159 Number of 2-station scans: 226 Number of 3-station scans: 65 Number of 4-station scans: 41 Number of 5-station scans: 16 Number of 6-station scans: 2 Number of 7-station scans: 0 Total # of scans, observations: 350 857 =========================================================== 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