IVS-OHIG48 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2007 Feb. 07/08 doy 039/039 Insitute for Geodesy and Geoinformtion of the University of Bonn, Germany Correlator: see Multi Agency Schedule 2007 Purpose ======= The purpose of the IVS-OHIG (Southern Terrestrial Reference Frame) sessions is to tie together optimally the sites in the southern hemisphere. 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 K5 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: Up to now we record in a new frequency sequence called EUR-T2 with a channel bandwith of 4 Mhz and 16 tracks. See more details in the section irecording mode in this file. RECORDING DATA/MODULES All stations should put so much O'Higgins sessions as possible on one (1) or two (2) module(s). This will help limit the number of modules being held up in the O'Higgins campaign. For Example: one OHIG experiment need 550 Gbyte of data. So on one C or D-size you can record all three Ohig-experiments. =========================================================== Parameter values for experiment OHIG48 Experiment description: IVS-OHIG48 Scheduler: mueskens Correlator: see master07.txt Nominal start: 2007-038-18:00:00 Nominal end: 2007-039-18:00:01 Current yyyyddd: 2007038 (2007.10) ( 14139 MJD, WED. 7FEB.) Greenwich sidereal time: 3: 9:54.00 (18: 0: 0 UT) Sun's RA and DEC: 21h 24.0m -15d 15.5 =========================================================== There are no observations for Kokee from 18:00 U.T. to 19:45 U.T. Kokee and Wettzell will participate in the intensive session during this two hour period. =========================================================== First observations Observation listing from file /geo/vlbi/schedules/ohig48.skd for experiment OHIG48 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Tc 0537-441 07038-180000| 641 276 641 353 386| 1958-179 07038-195037| 434 385 434 | End of listing. =========================================================== Last observations 0727-115 07039-173906| 40 40 | 0607-157 07039-174145| 246 246 | 1958-179 07039-174250| 720 363 720| End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 4.6 Min = .0 Max = 49.1 (Baseline Ft-Hh on 1741-038) RMS = 8.4 Total time: 1435 minutes ( 23.9 hours). Key: Ft=FORTLEZA Hh=HARTRAO Ho=HOBART26 Kk=KOKEE Oh=OHIGGINS Tc=TIGO Ft Hh Ho Kk Oh Tc Avg % obs. time: 48 36 38 45 67 55 48 % cal. time: 2 2 3 2 2 1 2 % slew time: 24 35 37 10 11 4 21 % idle time: 25 26 21 42 19 39 29 total # scans: 182 186 234 197 138 108 174 # scans/hour : 7.6 7.8 9.8 8.2 5.8 4.5 7.3 Avg scan (sec): 229 168 141 195 415 436 263 Total GBytes: 751 564 592 690 1032 848 746 Total GB(M5): 667 501 526 614 917 754 663 # of tapes : 4.9 .9 .9 1.2 1.7 1.5 Total number of tapes: 11.1 Total GBytes (M5) recorded: 3979.6 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Tc StnTotal -------------------------------------- Ft|182 113 15 46 59 59 292 Hh| 186 66 0 66 29 274 Ho| 234 132 80 24 317 Kk| 197 35 47 260 Oh| 138 42 282 Tc| 108 201 Number of 2-station scans: 315 Number of 3-station scans: 88 Number of 4-station scans: 34 Number of 5-station scans: 3 Number of 6-station scans: 0 Total # of scans, observations: 440 813 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: FORTLEZA 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: HARTRAO KOKEE TIGOCONC 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: HOBART26 OHIGGINS 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 =========================================================== Tape types ID Station Tape length Density Passes Ft FORTLEZA 8700feet (Thick ) 33333 (Low ) 14 Hh HARTRAO 17400feet (Thin ) 56250 (HIGH ) 14 Ho HOBART26 17400feet (Thin ) 56250 (HIGH ) 14 Kk KOKEE 17400feet (Thin ) 56250 (HIGH ) 14 Oh OHIGGINS 17400feet (Thin ) 56250 (HIGH ) 14 Tc TIGOCONC 17400feet (Thin ) 56250 (HIGH ) 14 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 3) S-band (margin 3) Ft Hh Ho Kk Oh Ft Hh Ho Kk Oh Hh 22 Hh 22 Ho 22 22 Ho 22 22 Kk 22 22 22 Kk 22 22 22 Oh 18 18 18 18 Oh 18 18 18 18 Tc 20 20 20 20 20 Tc 20 20 20 20 20