IVS-OHIG98 (Continuous Observations of the Rotation of the Earth and South Terrestical Reference Frame Network) 2015 Nov,17-18 doy 321-322 Institut for Geodesy and Geoinformtion (IGGB) of the University of Bonn, Germany Nominal Start Time: 2015-321-1730 UT Nominal End Time: 2015-322-1730 UT Duration: 24.0 hr Correlator: Bonn Participating stations: ======================= Ft=FORTLEZA Ht=HART15M Hb=HOBART12 Ke=KATH12M Kk=KOKEE 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 ======== Ohiggins connot particpate 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. Session Notes for session: ohig98 =========================================================== Experiment: OHIG98 Description IVS-OHIG98 Scheduler: IGGB/muesk Correlator: BONN Start: 2015-321-17:30:00 End: 2015-322-17:30:01 Current yyyyddd: 2015321 (2015.88) ( 17344 MJD, TUES 17NOV.) =========================================================== First observations Observation listing from file ohig98.skd for experiment OHIG98 Source Start DURATIONS name yyddd-hhmmss Ft Ht Hb Ke Kk Sy Ww Yg 0727-115 15321-173000| 68 68 26 63 61| 2255-282 15321-173000| 813 367 813 | =========================================================== Last observations 1057-797 15322-171603| 125 525 525 | 0748+126 15322-172047| 285 285 150 255| 1334-127 15322-172528| 84 84 52 | 1424-418 15322-172737| 90 90 42 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 2.4 Min = 0.0 Max = 90.0 (Baseline Ht-Ww on 1749+096) RMS = 6.9 Total time: 1439 minutes ( 24.0 hours). Key: Ft=FORTLEZA Ht=HART15M Hb=HOBART12 Ke=KATH12M Kk=KOKEE Sy=SYOWA Ww=WARK12M Yg=YARRA12M Ft Ht Hb Ke Kk Sy Ww Yg Avg % obs. time: 63 24 79 81 48 77 77 74 65 % cal. time: 1 2 2 2 2 2 2 2 2 % slew time: 16 11 6 6 9 1 7 6 8 % idle time: 18 62 12 10 40 19 13 17 24 total # scans: 121 180 204 209 169 150 197 188 177 # scans/hour : 5 8 9 9 7 6 8 8 7 Avg scan (sec): 448 114 333 333 246 440 339 338 323 # Mk5 tracks: 16 16 16 16 16 16 16 16 Total TB(M5): 0.9 0.3 1.1 1.1 0.7 1.1 1.1 1.0 0.9 # OF OBSERVATIONS BY BASELINE | Ft Ht Hb Ke Kk Sy Ww Yg Total -------------------------------------------------- Ft| 110 3 0 11 110 10 4 248 Ht| 50 54 0 131 32 63 440 Hb| 181 141 28 169 153 725 Ke| 144 19 163 170 731 Kk| 13 150 119 578 Sy| 29 22 352 Ww| 136 689 Yg| 667 Number of 3-station scans: 183 Number of 4-station scans: 51 Number of 5-station scans: 121 Number of 6-station scans: 10 Total number of scans: 365 Total number of obs: 2215 | Ft Ht Hb Ke Kk Sy Ww Yg AVG ------------------------------------------------- Ft| 42 27 - 29 32 39 36 36 Ht| 41 43 - 37 36 44 40 Hb| 53 35 36 54 47 47 Ke| 38 32 46 46 46 Kk| 23 42 29 36 Sy| 33 32 34 Ww| 40 45 Yg| 42 Average S-band SNRs by baseline | Ft Ht Hb Ke Kk Sy Ww Yg AVG ------------------------------------------------- Ft| 24 22 - 33 22 22 23 23 Ht| 26 25 - 24 25 30 25 Hb| 24 28 21 25 24 25 Ke| 31 22 24 26 26 Kk| 28 38 30 32 Sy| 22 22 23 Ww| 24 27 Yg| 26 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: FORTLEZA 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 ===========================================================