IVS-OHIG51 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2007 Nov. 06/07 doy 310-311 Institute for Geodesy and Geoinformtion of the University of Bonn, Germany Correlator: see Multi Agency Schedule 2007 Start: 17:30 UT 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: We record in a 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. Syowa data should transfered via e-VLBI several month after recording. =========================================================== Parameter values for experiment OHIG51 Experiment description: IVS-OHIG51 Scheduler: mueskens Correlator: see master07 file Nominal start: 2007-310-17:30:00 Nominal end: 2007-311-17:30:01 Current yyyyddd: 2007310 (2007.85) ( 14411 MJD, TUES 6NOV.) Greenwich sidereal time: 20:32: 0.00 (17:30: 0 UT) Sun's RA and DEC: 14h 45.8m -16d 0.9 =========================================================== 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 ohig51.skd for experiment OHIG51 Source Start DURATIONS name yyddd-hhmmss Ft Ho Kk Oh Sy Tc 1144-379 07310-173000| 40 40 | 1741-038 07310-173000| 549 476 549 476| =========================================================== Last observations 1611+343 07311-171200| 155 155 | 0458-020 07311-171626| 70 70 | 1921-293 07311-171902| 124 231 231| =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 4.2 Min = 0.0 Max = 37.9 (Baseline Kk-Tc on 0727-115) RMS = 8.1 Total time: 1431 minutes ( 23.9 hours). Key: Ft=FORTLEZA Ho=HOBART26 Kk=KOKEE Oh=OHIGGINS Sy=SYOWA Tc=TIGO Ft Ho Kk Oh Sy Tc Avg % obs. time: 49 38 41 72 65 60 54 % cal. time: 1 3 3 1 2 1 2 % slew time: 16 33 11 9 2 4 13 % idle time: 32 25 44 16 30 34 31 total # scans: 100 259 232 114 136 118 159 # scans/hour : 4.2 10.9 9.7 4.8 5.7 4.9 6.7 Avg scan (sec): 424 126 153 543 410 438 348 Total GBytes: 763 587 638 1113 1004 929 839 Total GB(M5): 678 522 567 990 893 826 746 # of tapes : 5.2 0.9 1.1 2.0 3.1 1.6 Total number of tapes: 13.9 Total GBytes (M5) recorded: 4475.6 # OF OBSERVATIONS BY BASELINE | Ft Ho Kk Oh Sy Tc StnTotal -------------------------------------- Ft|100 9 41 51 39 58 198 Ho| 259 165 53 88 25 340 Kk| 232 21 12 56 295 Oh| 114 83 52 260 Sy| 136 32 254 Tc| 118 223 Number of 2-station scans: 254 Number of 3-station scans: 97 Number of 4-station scans: 40 Number of 5-station scans: 0 Number of 6-station scans: 0 Total # of scans, observations: 391 785 =========================================================== Recording mode 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: 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 Recording mode setup for: 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 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 3) S-band (margin 3) Ft Ho Kk Oh Sy Ft Ho Kk Oh Sy Ho 22 Ho 22 Kk 22 22 Kk 22 22 Oh 18 18 18 Oh 18 18 18 Sy 20 20 20 18 Sy 20 20 20 18 Tc 20 20 20 18 20 Tc 20 20 20 18 20