IVS-OHIG44 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2006 Feb. 045/046 Geodetic Institute of the University of Bonn, Germany Correlator: see Multi Agency Schedule 2006 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 Mark5 only H Ho HOBART26 Mark5 only J Hh HartRao Mark4/ thin tape A Kk KOKEE VLBA/ thin tape P Oh OHIGGINS VLBA4/ thin tape C Tc TIGOCONC VLBA/ thin tape S Sy Syowa/Jap 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 20/18 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 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 IVS-OHIG experiments. Remark ====== Syowa tape/data will need probably one year or more before they are received at the Correlator side. On this account all participate stations should recorded data on magnetic tape (except of Hobart and FortLeza). ========================================================== Parameter values for experiment OHIG44 Experiment description: IVS-OHIG44 Scheduler: mueskens Nominal start: 2006-045-17:30:00 Nominal end: 2006-046-17:30:01 Current yyyyddd: 2006045 (2006.12) ( 13781 MJD, TUES 14FEB.) Greenwich sidereal time: 3: 8:22.00 (17:30: 0 UT) Sun's RA and DEC: 21h 52.5m -12d 53.4 =========================================================== There are no observations for Kokee and Wettzell 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 ohig44.skd for experiment OHIG44 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Sy Tc 0537-441 06045-173000| 222 327 222 342 333 342| 1334-127 06045-173705| 40 40 | End of listing. =========================================================== Last observations 0607-157 06046-170901| 189 720 720 | 1954-388 06046-170929| 630 437 416 630| 1921-293 06046-172151| 47 47 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 3.4 Min = .0 Max = 46.5 (Baseline Hh-Ho on 1741-038) RMS = 7.8 Total time: 1432 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: 52 41 47 44 58 64 47 50 % cal. time: 1 1 2 1 1 1 0 1 % slew time: 22 32 32 5 10 2 3 15 % idle time: 23 24 17 48 29 31 48 31 total # scans: 145 167 202 143 113 148 83 143 # scans/hour : 6.1 7.0 8.5 6.0 4.7 6.2 3.5 6.0 Avg scan (sec): 310 212 203 266 447 372 491 328 Total GBytes: 365 292 338 311 407 446 328 356 Total GB(M5): 371 296 344 316 413 453 333 361 # of tapes : 3.2 .7 .8 .7 1.0 1.0 .8 tape change times (hhmm): 0017 0000 0000 0000 0000 0000 0000 0727 0000 0000 0000 0000 0000 0000 1556 0000 0000 0000 0000 0000 0000 Total number of tapes: 8.0 Total GBytes (M5) recorded: 2529.4 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Sy Tc StnTotal ------------------------------------------ Ft|145 73 10 47 52 33 40 255 Hh| 167 73 0 45 93 17 301 Ho| 202 90 41 82 22 318 Kk| 143 25 11 23 196 Oh| 113 63 44 270 Sy| 148 25 307 Tc| 83 171 Number of 2-station scans: 241 Number of 3-station scans: 100 Number of 4-station scans: 38 Number of 5-station scans: 11 Number of 6-station scans: 2 Number of 7-station scans: 0 Total # of scans, observations: 392 909 =========================================================== 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 Density Passes 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 ===========================================================