IVS-OHIG42 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2006 Jan. 031/032 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 OHIG42 Experiment description: IVS-OHIG42 Scheduler: mueskens Correlator: BONN Nominal start: 2006-031-17:30:00 Nominal end: 2006-032-17:30:01 Current yyyyddd: 2006031 (2006.08) ( 13767 MJD, TUES 31JAN.) Greenwich sidereal time: 2:13:10.00 (17:30: 0 UT) Sun's RA and DEC: 20h 56.7m -17d 16.5 =========================================================== There are no observations for Kokee 18:00 U.T. to 20:00 U.T. Kokee will participate in the intensive session during this two hour period. =========================================================== First observations Observation listing from file ohig42.skd for experiment OHIG42 Source Start DURATIONS name yyddd-hhmmss Ft Hh Ho Kk Oh Sy Tc 0537-441 06031-173000| 96 103 203 203 | 1741-038 06031-173000| 323 323| 1954-388 06031-173704| 611 217 720 720 | =========================================================== Last observations 1741-038 06032-170132| 270 720 720| 0208-512 06032-170503| 169 105 169 | 1749+096 06032-170825| 331 331 | 1424-418 06032-171013| 181 181 | 0528+134 06032-171413| 159 159 | 1334-127 06032-171518| 60 60 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 3.2 Min = .0 Max = 37.2 (Baseline Hh-Ho on 1741-038) RMS = 7.1 Total time: 1426 minutes ( 23.8 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: 51 39 45 41 64 69 44 50 % cal. time: 1 1 2 1 1 1 0 1 % slew time: 19 32 36 6 10 2 3 15 % idle time: 28 26 15 49 23 26 51 31 total # scans: 131 150 212 155 106 126 84 137 # scans/hour : 5.5 6.3 8.9 6.5 4.5 5.3 3.5 5.8 Avg scan (sec): 334 227 183 230 517 469 448 344 Total GBytes: 355 281 323 294 440 475 303 353 Total GB(M5): 360 285 328 298 447 482 308 359 # of tapes : 3.3 .6 .7 .7 1.0 1.1 .7 tape change times (hhmm): 0106 0000 0000 0000 0000 1450 0000 0810 0000 0000 0000 0000 0000 0000 1547 0000 0000 0000 0000 0000 0000 Total number of tapes: 8.0 Total GBytes (M5) recorded: 2512.2 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh Sy Tc StnTotal ------------------------------------------ Ft|131 71 14 33 49 47 38 252 Hh| 150 68 0 51 71 21 282 Ho| 212 105 53 72 22 334 Kk| 155 13 9 31 191 Oh| 106 86 28 280 Sy| 126 25 310 Tc| 84 165 Number of 2-station scans: 240 Number of 3-station scans: 78 Number of 4-station scans: 38 Number of 5-station scans: 16 Number of 6-station scans: 3 Number of 7-station scans: 0 Total # of scans, observations: 375 907 =========================================================== 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 =========================================================== 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