IVS-OHG112 (Continuous Observations of the Rotation of the Earth and South Terrestical Reference Frame Network) 2018 Feb.07-08 doy 038-039 Institut for Geodesy and Geoinformtion (IGGB) of the University of Bonn, Germany Nominal Start Time: 2018-038-1800 UT Nominal End Time: 2018-039-1800 UT Duration: 24.0 hr Correlator: Bonn Participating stations (8): ======================= Ft=FORTLEZA Ht=HART15M Ke=KATH12M Kk=KOKEE Oh=OHIGGINS Sy=SYOWA Ww=WARK12M Yg=YARRA12M 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: ohg112 =========================================================== Experiment: OHG112 Description IVS-OHG112 Scheduler: IGGB/muesk Correlator: BONN Start: 2018-038-18:00:00 End: 2018-039-18:00:01 Current yyyyddd: 2018038 (2018.10) ( 18157 MJD, WED. 7FEB.) =========================================================== First observations Observation listing from file ohg112.skd for experiment OHG112 Source Start DURATIONS name yyddd-hhmmss Ft Ht Ke Kk Oh Sy Ww Yg 0454-234 18038-180000| 871 157 871 | 1546+027 18038-180000| 869 229 900 900| 1424-418 18038-181551| 352 463 463 230 216| Last observations 0537-441 18039-173606| 658 228 658 | 1424-418 18039-174826| 310 371 371 | 0727-115 18039-174949| 38 180 180 131| 1156+295 18039-175605| 165 84 205 205| =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 1.9 Min = 0.0 Max = 205.7 (Baseline Ft-Kk on 0727-115) RMS = 7.9 Total time: 1439 minutes ( 24.0 hours). Key: Ft=FORTLEZA Ht=HART15M Ke=KATH12M Kk=KOKEE Oh=OHIGGINS Sy=SYOWA Ww=WARK12M Yg=YARRA12M Ft Ht Ke Kk Oh Sy Ww Yg Avg % obs. time: 64 25 79 36 70 68 72 79 62 % cal. time: 1 1 2 1 1 1 2 2 2 % slew time: 14 9 7 7 6 2 5 7 8 % idle time: 19 64 11 54 22 27 20 11 29 total # scans: 95 123 183 124 105 115 159 172 134 # scans/hour : 4 5 8 5 4 5 7 7 6 Avg scan (sec): 584 177 373 254 574 514 390 398 407 # Mk5 tracks: 16 16 16 16 16 16 16 16 Total TB(M5): 0.89 0.35 1.09 0.50 0.97 0.95 0.99 1.10 0.85 # OF OBSERVATIONS BY BASELINE | Ft Ht Ke Kk Oh Sy Ww Yg Total -------------------------------------------------- Ft| 64 1 11 84 53 3 4 220 Ht| 40 0 67 66 18 49 304 Ke| 107 1 38 149 163 499 Kk| 16 13 107 88 342 Oh| 63 10 0 241 Sy| 29 44 306 Ww| 129 445 Yg| 477 Number of 3-station scans: 153 Number of 4-station scans: 138 Number of 5-station scans: 13 Total number of scans: 304 Total number of obs: 1417 Total integrated obs-time: 463435 Average obs-time: 327.1 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: FORTLEZA 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 ===========================================================