IVS-OHIG23 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2003 Jan. 20/21 Geodetic Institute of the University of Bonn, Germany Correlator: WASH 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 J Hh HARTRAO Mark4 H Ho HOBART26 Mark3A A Kk KOKEE VLBA P Oh OHIGGINS VLBA4 S Sy SYOWA K4 C Tc TIGOCONC VLBA4 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. Syowa station participate that time in this network. 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 25/15 at X-band and 20/12 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. THIS SCHEDULE HAS NO EARLY TAPE START !! ---------------------------------------- Parameter values for experiment OHIG23 Experiment description: IVS-OHIG23 Scheduler: mueskens Correlator: WASH Nominal start: 2003-020-14:00:00 Nominal end: 2003-021-14:00:01 Current yyyyddd: 2003020 (2003.05) ( 12660 MJD, MON. 20JAN.) Greenwich sidereal time: 21:58: 9.42 (14: 0: 0 UT) Sun's RA and DEC: 20h 9.1m -20d 7.8 =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Oh Sy Tc 2145+067 03020-140000| 720 264 720 720 720| 0727-115 03020-140000| 40 40 | 1057-797 03020-140320| 180 180 | 0454-234 03020-140956| 46 40 46 | 0229+131 03020-141329| 298 298 | =========================================================== Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Oh Sy Tc 2121+053 03021-132446| 450 450 | 1726+455 03021-133015| 720 720| 0106+013 03021-133542| 151 151 | CTA26 03021-134053| 275 275 262 | 0454-234 03021-134751| 45 40 45 | 0727-115 03021-135105| 40 40 | =========================================================== Total time: 1431 minutes ( 23.9 hours). Key: Ft=FORTLEZA Hh=HARTRAO Ho=HOBART26 Oh=OHIGGINS Sy=SYOWA Tc=TIGO Ft Hh Ho Oh Sy Tc Avg % obs. time: 56 44 51 43 57 51 50 % cal. time: 1 1 1 0 1 0 1 % slew time: 19 28 24 6 2 2 14 % idle time: 22 25 22 48 37 44 33 total # scans: 114 133 138 69 153 75 113 # scans/hour : 4 5 5 2 6 3 4.7 Avg scan (sec): 426 287 317 540 325 594 414 Total GBytes: 383 301 345 293 391 350 343 # of tapes : 3.3 .7 3.0 .7 .9 .8 tape change times (hhmm): 2106 0000 2156 0000 0000 0000 0427 0000 0540 0000 0000 0000 1139 0000 1340 0000 0000 0000 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Oh Sy Tc StnTotal -------------------------------------- Ft|114 64 5 42 26 60 197 Hh| 133 52 25 70 13 224 Ho| 138 25 112 13 207 Oh| 69 35 49 176 Sy| 153 20 263 Tc| 75 155 Number of 2-station scans: 181 Number of 3-station scans: 58 Number of 4-station scans: 21 Number of 5-station scans: 10 Number of 6-station scans: 2 Total # of scans, observations: 272 611 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: FORTLEZA HOBART26 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 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 Density Passes Ft FORTLEZA 8700feet (Thick) 33333. (Low ) 12 Hh HARTRAO 17400feet (Thin ) 56250. (High) 12 Ho HOBART26 8700feet (Thick) 33333. (Low ) 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 5) Ft Hh Ho Oh Sy Ft Hh Ho Oh Sy Hh 25 Hh 20 Ho 25 25 Ho 20 20 Oh 15 15 15 Oh 12 12 12 Sy 15 15 15 15 Sy 15 15 15 12 Tc 15 15 15 15 15 Tc 12 12 12 12 12