IVS-OHIG61 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2008 Nov. 19/20 doy 324/325 Insitute for Geodesy and Geoinformtion of the University of Bonn, Germany Correlator: Bonn 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 ca. 550 Gbyte of data. So on one C or D-size you can record all three Ohig-experiments. Session Notes for session: ohig61 =========================================================== Parameter values for experiment OHIG61 Experiment description: IVS-OHIG61 Scheduler: mueskens Correlator: BONN Nominal start: 2008-324-18:00:00 Nominal end: 2008-325-18:00:01 Current yyyyddd: 2008324 (2008.89) ( 14790 MJD, WED. 19NOV.) Greenwich sidereal time: 21:56: 0.00 (18: 0: 0 UT) Sun's RA and DEC: 15h 42.1m -19d 39.9 =========================================================== There are no observations for Kokee from 18:20 U.T. to 19:40 U.T. Kokee will participate in the intensive session during this 1.5 hour period. =========================================================== First observations Observation listing from file ohig61.skd for experiment OHIG61 Source Start DURATIONS name yyddd-hhmmss Ft Ho Kk Oh Tc Sy 0727-115 08324-180000| 40 40 | 1921-293 08324-180000| 87 272 272| 1611+343 08324-180303| 134 134 | =========================================================== Last observations 1611+343 08325-173329| 136 136 | 0537-441 08325-173349| 73 73 | 1124-186 08325-173751| 465 481 481 | 1611+343 08325-174721| 267 267 | 0637-752 08325-174800| 69 69 | 0454-234 08325-175117| 230 230| 0607-157 08325-175628| 177 177| =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 3.9 Min = 0.0 Max = 37.4 (Baseline Ho-Kk on 2136+141) RMS = 7.8 Total time: 1440 minutes ( 24.0 hours). Key: Ft=FORTLEZA Ho=HOBART26 Kk=KOKEE Oh=OHIGGINS Tc=TIGO Sy=SYOWA Ft Ho Kk Oh Tc Sy Avg % obs. time: 49 40 41 67 59 62 53 % cal. time: 1 3 2 2 1 2 2 % slew time: 18 33 11 12 5 3 14 % idle time: 31 22 45 19 34 32 31 total # scans: 96 273 207 130 123 161 165 # scans/hour : 4.0 11.4 8.6 5.4 5.1 6.7 6.9 Avg scan (sec): 439 128 172 447 412 332 321 Total GBytes: 759 627 641 1047 912 962 825 Total GB(M5): 675 558 569 930 810 855 733 Total GBytes (M5) recorded: 4398.2 # OF OBSERVATIONS BY BASELINE | Ft Ho Kk Oh Tc Sy StnTotal -------------------------------------- Ft| 96 7 30 54 62 39 192 Ho| 273 152 61 23 108 351 Kk| 207 18 50 12 262 Oh| 130 62 90 285 Tc| 123 43 240 Sy| 161 292 Total # of scans, observations: 407 811 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: FORTLEZA 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) 32 135.00 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: 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 Recording mode setup for: 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 ===========================================================