IVS-OHIG57 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2008 Feb. 13/14 doy 044-045 Insitute for Geodesy and Geoinformtion of the University of Bonn, Germany Correlator: see Multi Agency Schedule 2008 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 OHIG57 Experiment description: IVS-OHIG57 Scheduler: mueskens Nominal start: 2008-044-18:00:00 Nominal end: 2008-045-18:00:00 Current yyyyddd: 2008044 (2008.12) ( 14510 MJD, WED. 13FEB.) Greenwich sidereal time: 3:32: 0.00 (18: 0: 0 UT) Sun's RA and DEC: 21h 46.8m -13d 23.2 =========================================================== First observations Observation listing from file ohig57.skd for experiment OHIG57 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Sy Tc 0537-441 08044-180000| 186 345 119 375 370 375| 1519-273 08044-180458| 40 40 | =========================================================== Last observations 0537-441 08045-173759| 178 303 141 374 366 374| 0727-115 08045-174532| 45 45 | 1741-038 08045-174628| 68 222 222| 0552+398 08045-174939| 74 74 | 1606+106 08045-175425| 40 40 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 4.2 Min = 0.0 Max = 49.1 (Baseline Ft-Kk on 0727-115) RMS = 8.5 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: 48 32 39 44 68 64 55 50 % cal. time: 1 1 2 1 1 1 1 1 % slew time: 17 36 35 11 9 2 4 17 % idle time: 33 30 23 43 21 32 39 32 total # scans: 125 176 273 221 114 145 127 168 # scans/hour : 5.2 7.4 11.4 9.2 4.8 6.1 5.3 7.1 Avg scan (sec): 328 157 124 171 514 380 374 292 Total GBytes: 750 513 635 701 1066 1006 867 791 Total GB(M5): 667 456 564 623 947 894 770 703 Total number of tapes: 14.8 Total GBytes (M5) recorded: 4921.7 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Sy Tc StnTotal ------------------------------------------ Ft|125 68 2 42 40 33 52 237 Hh| 176 86 0 63 91 28 336 Ho| 273 149 54 85 32 408 Kk| 221 17 14 64 286 Oh| 114 88 48 310 Sy| 145 34 345 Tc| 127 258 Total # of scans, observations: 462 1090 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: FORTLEZA SYOWA 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 ===========================================================