IVS-OHIG32 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2004 Oct. 26/27 doy 300/301 Geodetic Institute of the University of Bonn, Germany Correlator: see Multi Agency Schedule 2004 Purpose ======= The purpose of the CORE-OHIG (Southern Terrestrial Reference Frame) sessions is to tie together optimally the sites in the southern hemisphere. The participating sites include all the sites in the south F Ft FORTLEZA Mark3A H Ho HOBART26 Mk5 only J Hh HARTRAO Mk4 /thin tape A Kk KOKEE VLBA /thin tape P Oh OHIGGINS VLBA4 /thin tape C Tc TIGOCONC VLBA4 /thin tape S Sy SYOWA K5/MK5 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 at X-band and 20 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 25 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 K4 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: The standard EUR2-SX(2Mhz) frequency sequence is used for all CORE-OHIG experiments. ========================================================= Parameter values for experiment OHIG32 Experiment description: IVS-OHIG32 Scheduler: mueskens Correlator: BONN Nominal start: 2004-300-17:30:00 Nominal end: 2004-301-17:30:01 Current yyyyddd: 2004300 (2004.82) ( 13305 MJD, TUES 26OCT.) Greenwich sidereal time: 19:51:42.00 (17:30: 0 UT) Sun's RA and DEC: 14h 5.6m -12d 43.8 =========================================================== There are no observations for Kokee from 18:00 U.T. to 20:00 U.T. Kokee and Wettzell will participate in the intensive session during this two hour period. =========================================================== First observations Observation listing from file ohig32.skd for experiment OHIG32 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Sy Tc 1622-253 04300-173000| 198 78 365 413 413| 0208-512 04300-173916| 254 254 162 | OJ287 04300-201749| 211 211 | End of listing. =========================================================== Last observations 1622-253 04301-165708| 200 93 371 428 428| 1124-186 04301-170022| 94 94 | 1803+784 04301-170539| 190 190 | 0208-512 04301-170745| 218 218 163 | 1057-797 04301-171410| 349 349 | 1921-293 04301-171647| 60 60 | 0454-234 04301-172229| 60 60 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 3.2 Min = .0 Max = 33.5 (Baseline Kk-Sy on 3C446 ) RMS = 6.3 Total time: 1433 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: 53 47 50 50 48 66 44 51 % cal. time: 1 1 2 1 0 1 0 1 % slew time: 20 33 32 7 7 2 3 15 % idle time: 24 16 14 39 43 29 51 31 total # scans: 124 161 190 153 85 142 77 133 # scans/hour : 5 6 7 6 3 5 3 5.5 Avg scan (sec): 370 253 228 285 487 400 497 360 Total GBytes: 361 321 342 344 326 447 301 349 Total GB(M5): 367 326 347 349 331 454 306 355 # of tapes : 3.0 .8 .8 .8 .8 1.0 .7 tape change times (hhmm): 0138 0000 0000 0000 0000 0000 0000 0837 0000 0000 0000 0000 0000 0000 Total number of tapes: 7.8 Total GBytes (M5) recorded: 2484.9 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Sy Tc StnTotal ------------------------------------------ Ft|124 66 5 37 35 31 32 206 Hh| 161 67 0 36 94 15 278 Ho| 190 93 23 81 14 283 Kk| 153 21 12 34 197 Oh| 85 45 22 182 Sy| 142 15 278 Tc| 77 132 Number of 2-station scans: 242 Number of 3-station scans: 103 Number of 4-station scans: 27 Number of 5-station scans: 5 Number of 6-station scans: 1 Number of 7-station scans: 0 Total # of scans, observations: 378 778 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: FORTLEZA Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 135.00 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 8.000 6.000 14.000 Recording mode setup for: HARTRAO HOBART26 KOKEE OHIGGINS SYOWA TIGOCONC Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 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 8.000 6.000 14.000 =========================================================== Tape types ID Station Tape length Speed ID Station Tape length Speed Ft FORTLEZA 8700feet (Thick ) 33333. (Low ) 12 Hh HARTRAO 17400feet (Thin ) 56250. (High) 12 Ho HOBART26 17400feet (Thin ) 56250. (High) 12 Kk KOKEE 17400feet (Thin ) 56250. (High) 12 Oh OHIGGINS 17400feet (Thin ) 56250. (High) 12 Sy SYOWA 17400feet (Thin ) 56250. (High) 12 Tc TIGOCONC 17400feet (Thin ) 56250. (High) 12 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 3) Ft Hh Ho Kk Oh Sy Ft Hh Ho Kk Oh Sy Hh 20 Hh 20 Ho 20 20 Ho 20 20 Kk 20 20 20 Kk 20 20 20 Oh 20 20 20 20 Oh 20 20 20 20 Sy 20 20 20 20 20 Sy 20 20 20 20 20 Tc 20 20 20 20 20 20 Tc 20 20 20 20 20 20