Session Notes for R1 (Rapid Turnaround Monday) session: r1026 Prepared by C. Thomas, NVI, Inc./GSFC Refer to http://ivscc.gsfc.nasa.gov/program/descrip2002.html#r1 for the session purpose. =========================================================== Parameter values for experiment R1026 Experiment description: IVS-R1 Scheduler: NASA Correlator: HAYSTACK Nominal start: 2002-182-17:00:00 Nominal end: 2002-183-17:00:00 Current yyyyddd: 2002182 (2002.50) ( 12457 MJD, MON. 1JUL.) Greenwich sidereal time: 11:38:18.25 (17: 0: 0 UT) Sun's RA and DEC: 6h 42.2m 23d 5.1 =========================================================== The following sources were included for research purposes: 0406+121 (72 observations), 0459+135 (75 observations), 0508+138 (48 observations), 0509+152 (51 observations). =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gc Hh Mc Tc Ts Wf 0808+019 02182-170000| 170 170 170| 1044+719 02182-170000| 170 170 95 | =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gc Hh Mc Tc Ts Wf 0235+164 02183-163238| 149 170 97 170| 3C418 02183-163631| 40 40 40 40| 1726+455 02183-163814| 43 43 40 | 1749+096 02183-164012| 40 40 40 | 0048-097 02183-164222| 40 40 | 1300+580 02183-164532| 40 40 40 40| OK290 02183-165114| 40 40 | =========================================================== SKED Summary from file ./r1026.skd for experiment R1026 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 4.2 Min = .0 Max = 27.9 (Baseline Gc-Ts on 0727-115) RMS = 5.4 Total time: 1432 minutes ( 23.9 hours). Key: Gc=GILCREEK Hh=HARTRAO Mc=MEDICINA Tc=TIGO Ts=TSUKUB32 Wf=WESTFORD Gc Hh Mc Tc Ts Wf Avg % obs. time: 32 13 26 16 26 36 25 % cal. time: 5 2 5 1 5 5 4 % slew time: 28 32 41 3 18 19 23 % idle time: 33 51 26 78 49 38 46 # of tapes : 1.9 .9 1.6 .9 1.6 2.0 total # scans: 498 188 465 114 448 444 359 # scans/hour : 20 7 19 4 18 18 15.0 Avg scan (sec): 56 63 49 123 50 70 68 tape change times (hhmm): 0602 0000 0812 0000 0744 0454 # OF OBSERVATIONS BY BASELINE | Gc Hh Mc Tc Ts Wf StnTotal -------------------------------------- Gc|498 12 260 52 360 330 1014 Hh| 188 164 33 67 69 345 Mc| 465 44 244 292 1004 Tc| 114 17 98 244 Ts| 448 196 884 Wf| 444 985 Number of 2-station scans: 293 Number of 3-station scans: 281 Number of 4-station scans: 177 Number of 5-station scans: 4 Number of 6-station scans: 0 Total # of scans, observations: 755 2238 =========================================================== Recording mode Name Code GEOSX4F 4F Recording mode setup for: GILCREEK Mode Tot.Rate Tot.BandW #chan #bits Barrel VLBA1:2 256.000 Mbits 128.000 MHz 14 1 8:1 Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 16(*2) 32 160.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 120.0 MHz rms spanned bw= 48.8 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: HARTRAO MEDICINA TIGOCONC WESTFORD Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 256.000 Mbits 128.000 MHz 14 1 16 Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 16(*2) 32 160.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 120.0 MHz rms spanned bw= 48.8 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: TSUKUB32 Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 256.000 Mbits 128.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 16(*2) 32 160.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 120.0 MHz rms spanned bw= 48.8 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 =========================================================== This is the first schedule that stations with Mark IV formatters will be using barrel roll for the first time. The stations should use FS version 9.5.7 or later. =========================================================== Tape types ID Station Tape length Density Gc GILCREEK 17400feet (Thin ) 56700. (High) Hh HARTRAO 17400feet (Thin ) 56250. (High) Mc MEDICINA 17400feet (Thin ) 56250. (High) Tc TIGOCONC 17400feet (Thin ) 56250. (High) Ts TSUKUB32 17400feet (Thin ) 56250. (High) Wf WESTFORD 17400feet (Thin ) 56250. (High) =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 5) Gc Hh Mc Tc Ts Gc Hh Mc Tc Ts Hh 20 Hh 15 Mc 20 20 Mc 15 15 Tc 20 20 20 Tc 15 15 15 Ts 20 20 20 20 Ts 15 15 15 15 Wf 20 20 20 20 20 Wf 15 15 15 15 15