IVS-OHG113 (Continuous Observations of the Rotation of the Earth and South Terrestical Reference Frame Network) 2018 Feb.14-15 doy 045-046 Institut for Geodesy and Geoinformtion (IGGB) of the University of Bonn, Germany Nominal Start Time: 2018-045-1800 UT Nominal End Time: 2018-046-1800 UT Duration: 24.0 hr Correlator: Bonn Participating stations (9): ======================= Ft=FORTLEZA Ht=HART15M Ke=KATH12M Kk=KOKEE Oh=OHIGGINS Sy=SYOWA Ww=WARK12M Yg=YARRA12M Ho=HOBART26 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 15 min - use of CvgONLY in order to improve the geometry of observation This schedule was made using more than 100 sources which helped to improve the sky coverage. COMMENTS ======== 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. We have to vacate some satellite passages on OHIG station. That produce several observing gaps during this 24 hours. Session Notes for session: ohg113 =========================================================== Experiment: OHG113 Description IVS-OHG113 Scheduler: IGGB/muesk Correlator: BONN Start: 2018-045-18:00:00 End: 2018-046-18:00:01 Current yyyyddd: 2018045 (2018.12) ( 18164 MJD, WED. 14FEB.) =========================================================== First observations Observation listing from file ohg113.skd for experiment OHG113 Source Start DURATIONS name yyddd-hhmmss Ft Ht Ke Kk Oh Sy Ww Yg Ho 0229+131 18045-180000| 504 363 504 | 1424-418 18045-180000| 350 461 461 229 194 58| Last observations 0229+131 18046-174615| 498 348 498 | 1921-293 18046-174624| 193 193 57| 1741-038 18046-175022| 30 39 39| 1156+295 18046-175402| 43 54 54| 0727-115 18046-175453| 35 176 176 120 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 1.3 Min = 0.0 Max = 44.9 (Baseline Ft-Ht on 1424-418) RMS = 4.3 Total time: 1436 minutes ( 23.9 hours). Key: Ft=FORTLEZA Ht=HART15M Ke=KATH12M Kk=KOKEE Oh=OHIGGINS Sy=SYOWA Ww=WARK12M Yg=YARRA12M Ho=HOBART26 Ft Ht Ke Kk Oh Sy Ww Yg Ho Avg % obs. time: 68 35 79 45 58 72 77 76 47 62 % cal. time: 1 2 2 2 1 2 2 2 2 2 % slew time: 16 11 6 8 7 2 5 6 26 10 % idle time: 14 51 13 44 33 24 15 15 24 26 total # scans: 106 154 151 150 95 138 160 160 185 144 # scans/hour : 4 6 6 6 4 6 7 7 8 6 Avg scan (sec): 549 195 451 260 527 448 415 407 220 385 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.93 0.48 1.09 0.62 0.80 0.99 1.06 1.04 0.65 0.85 # OF OBSERVATIONS BY BASELINE | Ft Ht Ke Kk Oh Sy Ww Yg Ho Total ------------------------------------------------------- Ft| 69 1 16 67 55 10 4 13 235 Ht| 30 0 50 90 16 53 60 368 Ke| 89 0 25 98 108 109 460 Kk| 21 13 109 72 98 418 Oh| 50 13 3 6 210 Sy| 20 49 40 342 Ww| 94 107 467 Yg| 100 483 Ho| 533 Number of 3-station scans: 263 Number of 4-station scans: 39 Number of 5-station scans: 60 Number of 6-station scans: 9 Total number of scans: 371 Total number of obs: 1758 Total integrated obs-time: 511504 Average obs-time: 291.0 Histogram of observation durations =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: FORTLEZA HOBART26 OHIGGINS SYOWA Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:2 128 Mbits 64 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 4.00 MHz 1 16(*2) 32 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 1-bit channels recorded per sub-pass X S Total 10.00 6.00 16.00 Recording mode for: HART15M KATH12M KOKEE WARK12M YARRA12M Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:1 128 Mbits 64 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 4.00 MHz 1 16(*1) 16 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 1-bit channels recorded per sub-pass X S Total 10.00 6.00 16.00 ===========================================================