IVS-OHG106 (Continuous Observations of the Rotation of the Earth and South Terrestical Reference Frame Network) 2017 Feb,14-15 doy 045-046 Institut for Geodesy and Geoinformtion (IGGB) of the University of Bonn, Germany Nominal Start Time: 2017-045-1730 UT Nominal End Time: 2017-046-1730 UT Duration: 24.0 hr Correlator: Bonn Participating stations: ======================= FT=FORTLEZA Ht=HART15M Hb=HOBART12 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 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. 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: ohg106 =========================================================== Experiment: OHG106 Description IVS-OHG106 Scheduler: IGGB/muesk Correlator: BONN Start: 2017-045-17:30:00 End: 2017-046-17:30:01 Current yyyyddd: 2017045 (2017.12) ( 17799 MJD, TUES 14FEB.) =========================================================== First observations Observation listing from file ohg106.skd for experiment OHG106 Source Start DURATIONS name yyddd-hhmmss Ft Ht Hb Ke Kk Sy Ww Yg Oh 1424-418 17045-173000| 123 123 218 122 218 | CTA26 17045-173000| 595 125 595 | 0537-441 17045-174812| 255 163 273 273| Last observations 0454-234 17046-172230| 381 69 362 381| 1749+096 17046-172527| 249 110 249 | 0537-441 17046-172531| 46 46 40 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 1.8 Min = 0.0 Max = 46.9 (Baseline Ft-Sy on 0727-115) RMS = 5.4 Total time: 1436 minutes ( 23.9 hours). Key: Ft=FORTLEZA Ht=HART15M Hb=HOBART12 Ke=KATH12M Kk=KOKEE Sy=SYOWA Ww=WARK12M Yg=YARRA12M Oh=OHIGGINS Ft Ht Hb Ke Kk Sy Ww Yg Oh Avg % obs. time: 61 33 78 79 42 73 75 76 57 64 % cal. time: 1 2 2 2 2 2 2 2 1 2 % slew time: 15 10 6 6 9 2 6 5 7 8 % idle time: 23 54 13 12 47 22 16 16 33 27 total # scans: 107 163 190 184 155 150 182 174 111 157 # scans/hour : 4 7 8 8 6 6 8 7 5 7 Avg scan (sec): 488 172 354 370 232 420 355 376 443 356 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 Total TB(M5): 0.8 0.4 1.1 1.1 0.6 1.0 1.0 1.0 0.8 0.9 # OF OBSERVATIONS BY BASELINE | Ft Ht Hb Ke Kk Sy Ww Yg Oh Total ------------------------------------------------------- Ft| 74 4 1 8 82 13 1 77 260 Ht| 43 44 0 98 21 57 67 404 Hb| 131 106 24 145 112 10 575 Ke| 109 15 115 136 1 552 Kk| 11 121 93 8 456 Sy| 24 30 85 369 Ww| 87 16 542 Yg| 5 521 Oh| 269 Number of 3-station scans: 236 Number of 4-station scans: 81 Number of 5-station scans: 72 Number of 6-station scans: 4 Total number of scans: 393 Total number of obs: 1974 Total integrated obs-time: 559135 =========================================================== 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 HOBART12 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 ===========================================================