Session Notes for R1 (Rapid Turnaround Monday) session: r1018.skd 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 R1018 Experiment description: IVS-R1 Scheduler: NASA Correlator: HAYSTACK Nominal start: 2002-126-17:00:00 Nominal end: 2002-127-17:00:00 Current yyyyddd: 2002126 (2002.35) ( 12401 MJD, MON. 6MAY.) Greenwich sidereal time: 7:57:31.15 (17: 0: 0 UT) Sun's RA and DEC: 2h 54.1m 16d 37.5 =========================================================== The following sources were included for research purposes: 0037+139 (58 observations), 0629+160 (53 observations), 1307+1221 (51 observations), 1830+139 (68 observations). =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gc Ma Ny Wf Wz 1357+769 02126-170000| 30 30 30 30 30| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gc Ma Ny Wf Wz 0552+398 02127-164638| 30 30 30 30 30| =========================================================== SKED Summary from file ./r1018.skd for experiment R1018 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 8.5 Min = .0 Max = 32.5 (Baseline Ny-Wz on CTA26 ) RMS = 6.7 Total time: 1427 minutes ( 23.8 hours). Key: Gc=GILCREEK Ma=MATERA Ny=NYALES20 Wf=WESTFORD Wz=WETTZELL Gc Ma Ny Wf Wz Avg % obs. time: 28 26 33 31 30 30 % cal. time: 6 5 6 5 6 6 % slew time: 32 37 30 21 17 27 % idle time: 32 30 28 40 45 35 # of tapes : 1.7 1.6 1.9 1.8 1.8 total # scans: 520 467 593 482 559 524 # scans/hour : 21 19 24 20 23 21.8 Avg scan (sec): 47 49 48 56 46 49 tape change times (hhmm): 0710 0843 0536 0557 0703 # OF OBSERVATIONS BY BASELINE | Gc Ma Ny Wf Wz StnTotal ---------------------------------- Gc|520 259 458 403 331 1451 Ma| 467 370 287 465 1381 Ny| 593 392 462 1682 Wf| 482 358 1440 Wz| 559 1616 Number of 2-station scans: 207 Number of 3-station scans: 180 Number of 4-station scans: 148 Number of 5-station scans: 215 Total # of scans, observations: 750 3785 =========================================================== 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: MATERA NYALES20 WESTFORD WETTZELL 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 =========================================================== Tape types ID Station Tape length Density Gc GILCREEK 17400feet (Thin ) 56700. (High) Ma MATERA 17400feet (Thin ) 56250. (High) Ny NYALES20 17400feet (Thin ) 56250. (High) Wf WESTFORD 17400feet (Thin ) 56250. (High) Wz WETTZELL 17400feet (Thin ) 56250. (High) =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 0) S-band (margin 0) Gc Ma Ny Wf Gc Ma Ny Wf Ma 20 Ma 15 Ny 20 20 Ny 15 15 Wf 20 20 20 Wf 15 15 15 Wz 20 20 20 20 Wz 15 15 15 15