IVS-OHIG68 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2010 Feb.09-10 doy 040-041 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. Comments ======== Processing should start in April/May this year when Syowa support us with the recorded data via eVLBI. When Syowa data will not received in this time period, we will processed the data without Syowa. Hobart12 will participate in tag along mode. Session Notes for session: ohig68.skd =========================================================== Experiment: OHIG68 Description IVS-OHIG68 Scheduler: mueskens Correlator: BONN Start: 2010-040-17:30:00 End: 2010-041-17:30:01 Current yyyyddd: 2010040 (2010.11) ( 15237 MJD, TUES 9FEB.) Greenwich sidereal time: 2:48: 0.00 (17:30: 0 UT) =========================================================== 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. For Ohiggins station, we have in particular some off-time recordings, due to satellite observing. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Hb Ho Kk Oh Sy Tc 0537-441 10040-173000| 208 350 410 410| 1334-127 10040-173639| 40 40 40 | Last observations 2052-474 10041-165546| 840 241 840 840 | 0637-752 10041-171223| 490 840 840 840| 1954-388 10041-172258| 62 62 | 0727-115 10041-172752| 40 40 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 7.1 Min = 0.0 Max = 52.4 (Baseline Hb-Ho on 4C39.25 ) RMS = 11.2 Total time: 1439 minutes ( 24.0 hours). Key: Hb=HOBART12 Ho=HOBART26 Kk=KOKEE Oh=OHIGGINS Sy=SYOWA Tc=TIGO Hb Ho Kk Oh Sy Tc Avg % obs. time: 16 38 35 77 71 72 51 % cal. time: 1 4 3 2 2 1 2 % slew time: 1 40 11 10 3 5 12 % idle time: 80 18 50 10 23 20 34 total # scans: 66 304 227 138 184 127 174 # scans/hour : 3 13 9 6 8 5 7 Avg scan (sec): 215 107 133 479 332 492 292 # data tracks: 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 Total GBytes: 256 584 545 1189 1100 1125 800 Total GB(M5): 227 519 485 1057 978 1000 711 Total GBytes (M5) recorded: 4266.1 # OF OBSERVATIONS BY BASELINE | Hb Ho Kk Oh Sy Tc StnTotal ---------------------------------------- Hb| 62 44 25 29 13 173 Ho| 189 50 116 26 443 Kk| 16 10 48 307 Oh| 107 84 282 Sy| 63 325 Tc| 234 Total # of scans, observations: 423 882 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: HOBART12 HOBART26 KOKEE OHIGGINS SYOWA TIGOCONC 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 0.00 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 ===========================================================