IVS-OHIG45 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2006 Nov. 311/312 Geodetic Institute of the University of Bonn, Germany Correlator: see Multi Agency Schedule 2006 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 OHIG45 Experiment description: IVS-OHIG45 Scheduler: mueskens Correlator: BONN Nominal start: 2006-311-17:30:00 Nominal end: 2006-312-17:30:01 Current yyyyddd: 2006311 (2006.85) ( 14047 MJD, TUES 7NOV.) Greenwich sidereal time: 20:37: 6.00 (17:30: 0 UT) Sun's RA and DEC: 14h 50.8m -16d 23.0 =========================================================== 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 one hour period. =========================================================== First observations Observation listing from file ohig45.skd for experiment OHIG45 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Sy Tc 0727-115 06311-173000| 40 40 | 1741-038 06311-173000| 89 58 337 180 337| End of listing. =========================================================== Last observations 1741-038 06312-170940| 60 339 186 339| 1611+343 06312-171040| 44 44 | OJ287 06312-171305| 45 45 | 2243-123 06312-171501| 40 40 | 0537-441 06312-171736| 40 89 89 | 2121+053 06312-171741| 200 200 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 4.3 Min = .0 Max = 38.4 (Baseline Ho-Tc on 1741-038) RMS = 8.0 Total time: 1431 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: 48 33 37 39 70 69 58 50 % cal. time: 2 2 3 2 1 2 1 2 % slew time: 26 34 41 8 10 2 4 18 % idle time: 23 30 18 49 18 27 35 29 total # scans: 186 179 256 213 120 134 123 173 # scans/hour : 7.8 7.5 10.7 8.9 5.0 5.6 5.2 7.3 Avg scan (sec): 221 157 124 159 499 439 406 286 Total GBytes: 775 539 616 647 1099 1083 921 811 Total GB(M5): 689 479 548 575 977 963 819 721 # of tapes : 4.8 .9 1.0 1.1 1.9 1.9 1.6 tape change times (hhmm): 2231 0000 0000 1503 0603 0637 0801 0336 0000 0000 0000 0000 0000 0000 0837 0000 0000 0000 0000 0000 0000 1333 0000 0000 0000 0000 0000 0000 Total number of tapes: 13.0 Total GBytes (M5) recorded: 5049.2 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Sy Tc StnTotal ------------------------------------------ Ft|186 112 22 37 65 56 64 356 Hh| 179 61 0 62 82 37 354 Ho| 256 161 55 72 37 408 Kk| 213 19 12 46 275 Oh| 120 102 53 356 Sy| 134 46 370 Tc| 123 283 Number of 2-station scans: 300 Number of 3-station scans: 75 Number of 4-station scans: 51 Number of 5-station scans: 34 Number of 6-station scans: 2 Number of 7-station scans: 0 Total # of scans, observations: 462 1201 =========================================================== 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 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 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 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 3) 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 18 18 18 18 Oh 18 18 18 18 Sy 18 18 18 18 18 Sy 18 18 18 18 18 Tc 20 20 20 20 18 18 Tc 20 20 20 20 18 18