IVS-OHIG50 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2007 Feb. 14/15 doy 045/046 Insitute for Geodesy and Geoinformtion of the University of Bonn, Germany Correlator: see Multi Agency Schedule 2007 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 OHIG50 Experiment description: IVS-OHIG50 Scheduler: mueskens Correlator: BONN Nominal start: 2007-045-18:00:00 Nominal end: 2007-046-18:00:01 Current yyyyddd: 2007045 (2007.12) ( 14146 MJD, WED. 14FEB.) Greenwich sidereal time: 3:37:30.00 (18: 0: 0 UT) Sun's RA and DEC: 21h 51.7m -12d 58.0 =========================================================== There are no observations for Kokee from 18:30 U.T. to 19:30 U.T. Kokee will participate in the intensive session during this two hour period. =========================================================== First observations Observation listing from file ohig50.skd for experiment OHIG50 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Tc 0537-441 07045-180000| 660 335 660 362 399| 1954-388 07045-181622| 199 126 169 720 720| End of listing. =========================================================== Last observations 1749+096 07046-173941| 376 161 376| 1057-797 07046-174242| 248 248 | 1606+106 07046-174805| 45 45 | 1334-127 07046-175135| 40 40 | 0528+134 07046-175211| 64 64 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 5.0 Min = .0 Max = 57.6 (Baseline Ho-Oh on 1741-038) RMS = 9.1 Total time: 1433 minutes ( 23.9 hours). Key: Ft=FORTLEZA Hh=HARTRAO Ho=HOBART26 Kk=KOKEE Oh=OHIGGINS Tc=TIGO Ft Hh Ho Kk Oh Tc Avg % obs. time: 49 39 42 46 66 57 50 % cal. time: 2 2 3 2 2 1 2 % slew time: 23 36 37 9 11 4 20 % idle time: 25 22 17 42 21 36 28 total # scans: 169 192 237 191 134 117 173 # scans/hour : 7.1 8.0 9.9 8.0 5.6 4.9 7.3 Avg scan (sec): 252 174 152 206 423 422 270 Total GBytes: 766 601 648 708 1021 888 772 Total GB(M5): 681 534 576 630 908 789 686 # of tapes : 5.0 1.0 1.1 1.1 1.8 1.5 Total number of tapes: 11.5 Total GBytes (M5) recorded: 4117.4 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Tc StnTotal -------------------------------------- Ft|169 104 13 43 63 59 282 Hh| 192 81 0 71 28 284 Ho| 237 126 69 31 320 Kk| 191 33 57 259 Oh| 134 44 280 Tc| 117 219 Number of 2-station scans: 309 Number of 3-station scans: 85 Number of 4-station scans: 38 Number of 5-station scans: 3 Number of 6-station scans: 0 Total # of scans, observations: 435 822 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: FORTLEZA 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: 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: 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 =========================================================== Tape types ID Station Tape length Density Passes Ft FORTLEZA 8700feet (Thick ) 33333 (Low ) 14 Hh HARTRAO 17400feet (Thin ) 56250 (HIGH ) 14 Ho HOBART26 17400feet (Thin ) 56250 (HIGH ) 14 Kk KOKEE 17400feet (Thin ) 56250 (HIGH ) 14 Oh OHIGGINS 17400feet (Thin ) 56250 (HIGH ) 14 Tc TIGOCONC 17400feet (Thin ) 56250 (HIGH ) 14 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 3) S-band (margin 3) Ft Hh Ho Kk Oh Ft Hh Ho Kk Oh Hh 22 Hh 22 Ho 22 22 Ho 22 22 Kk 22 22 22 Kk 22 22 22 Oh 18 18 18 18 Oh 18 18 18 18 Tc 20 20 20 20 20 Tc 20 20 20 20 20