IVS-OHIG55 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2008 Feb.06/07 doy 037-038 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 OHIG55 Experiment description: IVS-OHIG55 Scheduler: mueskens Correlator: BONN Nominal start: 2008-037-18:00:00 Nominal end: 2008-038-18:00:00 Current yyyyddd: 2008037 (2008.10) ( 14503 MJD, WED. 6FEB.) Greenwich sidereal time: 3: 5: 0.00 (18: 0: 0 UT) Sun's RA and DEC: 21h 19.1m -15d 38.6 =========================================================== 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 ohig55.skd for experiment OHIG55 Source Start DURATIONS name yyddd-hhmmss Hh Kk Oh Sy Tc 0537-441 08037-180000| 347 461 447 461| 0727-115 08037-180945| 46 46 | 1749+096 08037-180959| 116 116| =========================================================== Last observations 1749+096 08038-174006| 121 121| 1958-179 08038-174425| 322 322 | 0727-115 08038-174444| 46 46 | 0528+134 08038-174748| 60 60 | =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 4.7 Min = 0.0 Max = 60.0 (Baseline Sy-Tc on 1749+096) RMS = 9.4 Total time: 1429 minutes ( 23.8 hours). Key: Hh=HARTRAO Kk=KOKEE Oh=OHIGGINS Sy=SYOWA Tc=TIGO Hh Kk Oh Sy Tc Avg % obs. time: 34 44 69 64 61 54 % cal. time: 1 1 1 1 1 1 % slew time: 29 4 9 2 4 10 % idle time: 35 50 20 32 33 34 total # scans: 153 112 126 169 138 139 # scans/hour : 6.4 4.7 5.3 7.1 5.8 5.9 Avg scan (sec): 191 340 471 322 379 340 Total GBytes: 540 696 1080 996 953 853 Total GB(M5): 480 619 960 885 847 758 Total number of tapes: 8.7 Total GBytes (M5) recorded: 3791.0 # OF OBSERVATIONS BY BASELINE | Hh Kk Oh Sy Tc StnTotal ---------------------------------- Hh|153 0 64 123 35 222 Kk| 112 30 16 85 131 Oh| 126 91 42 227 Sy| 169 28 258 Tc| 138 190 Total # of scans, observations: 298 514 =========================================================== Recording mode Name Code EUR2-SX SX 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: 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: 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 ===========================================================