IVS-OHIG56 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2008 Feb. 12/13 doy 043-044 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 OHIG56 Experiment description: IVS-OHIG56 Scheduler: mueskens Correlator: see master08 Nominal start: 2008-043-17:30:00 Nominal end: 2008-044-17:30:00 Current yyyyddd: 2008043 (2008.12) ( 14509 MJD, TUES 12FEB.) Greenwich sidereal time: 2:58: 0.00 (17:30: 0 UT) Sun's RA and DEC: 21h 42.8m -13d 43.7 =========================================================== There are no observations for Kokee from 18:20 U.T. to 19:40 U.T. Kokee will participate in the intensive session during this 1.5 hour period. =========================================================== First observations Observation listing from file ohig56.skd for experiment OHIG56 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Sy Tc 0537-441 08043-173000| 171 267 163 373 359 373| 1519-273 08043-173530| 40 40 | =========================================================== Last observations 0454-234 08044-165737| 720 136 720 720 | 1741-038 08044-170802| 259 259| 0208-512 08044-171226| 410 720 720 | 1606+106 08044-171309| 40 40 | 1622-253 08044-171610| 84 84 | 1815-553 08044-171936| 40 40 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 4.2 Min = 0.0 Max = 57.6 (Baseline Ho-Oh on 1741-038) RMS = 8.2 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: 51 36 37 38 69 67 57 51 % cal. time: 1 1 1 1 1 1 1 1 % slew time: 21 36 34 10 9 2 4 17 % idle time: 27 26 26 49 20 29 38 31 total # scans: 132 179 255 203 116 144 123 164 # scans/hour : 5.5 7.5 10.7 8.5 4.9 6.0 5.2 6.9 Avg scan (sec): 331 170 126 162 510 401 395 298 Total GBytes: 797 565 601 612 1076 1052 886 798 Total GB(M5): 709 502 534 544 956 935 788 710 Total number of tapes: 14.9 Total GBytes (M5) recorded: 4966.9 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Sy Tc StnTotal ------------------------------------------ Ft|132 72 3 43 37 32 53 240 Hh| 179 86 0 62 91 31 342 Ho| 255 134 61 88 27 399 Kk| 203 19 11 58 265 Oh| 116 89 48 316 Sy| 144 31 342 Tc| 123 248 Total # of scans, observations: 446 1076 =========================================================== 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 ===========================================================