Session Notes for TQAK Session session: tqak04 Prepared by John Gipson, NVI, Inc./GSFC This is a "target of opportunity" schedule. The purpose of the sesion is to The network is to try to determine Tigo's position after the quake. We use the network Hb-Ho-Kk-Tc-Wf. Hb is the new 10 meter antenna at Hobart. It is not tagged but is scheduled with lower SNR targets of 12 for both X and S. The sources were chosen using Best 160. This scheduled used the following strategy: 1. The whole network was scheduled for 10 minutes. 2. HoTc and KkWz were scheduled as independent subnets for 10 minutes 3. Steps 1 and 2 were repeated until the end of the session. The reason for this strategy is that in tqak01 Hobart mostly observed with Wettzell, and had very few observations on Tigo. Also, Westford very seldom observed with Kokee alone. This led to large wholes in the sky coverage at all of the stations. =========================================================== ----- Parameter listing -------------------------------------- Experiment: TQAK04 Description IVS-R1 Scheduler: NASA Correlator: WASH Start: 2010-089-20:00:00 End: 2010-089-23:00:00 Current yyyyddd: 2010089 (2010.24) ( 15286 MJD, TUES 30MAR.) Greenwich sidereal time: 8:32: 0.00 (20: 0: 0 UT) Sun's RA and DEC: 0h 36.8m 3d 57.8 =========================================================== Important Station Information First observations Observation listing from file ./tqak04.skd for experiment TQAK04 Source Start DURATIONS name yyddd-hhmmss Hb Ho Kk Tc Wf 2145+067 10089-200000| 43 43 43 43| 3C446 10089-200259| 62 43 43 62 | 0215+015 10089-200441| 144 243 243| 1759-396 10089-200617| 43 43 | 1749+096 10089-200916| 43 43 43 | End of listing. =========================================================== Last observations Observation listing from file ./tqak04.skd for experiment TQAK04 Source Start DURATIONS name yyddd-hhmmss Hb Ho Kk Tc Wf 0133+476 10089-225839| 43 43| End of listing. Observation listing from file ./tqak04.skd for experiment TQAK04 Source Start DURATIONS name yyddd-hhmmss Hb Ho Kk Tc Wf 0048-427 10089-224747| 101 56 101 | 0347-211 10089-225144| 149 90 172 172| 0235+164 10089-225520| 57 57| 0104-408 10089-225527| 109 109 | 0552+398 10089-225708| 43 43| 0133+476 10089-225839| 43 43| End of listing. =========================================================== SKED Summary from file ./tqak04.skd for experiment TQAK04 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 0.7 Min = 0.0 Max = 82.3 (Baseline Ho-Wf on 2214+350) RMS = 4.4 Total time: 180 minutes ( 3.0 hours). Key: Hb=HOBART12 Ho=HOBART26 Kk=KOKEE Tc=TIGO Wf=WESTFORD Hb Ho Kk Tc Wf Avg % obs. time: 20 43 44 41 41 38 % cal. time: 2 4 6 3 5 4 % slew time: 6 42 27 8 18 21 % idle time: 71 11 22 48 34 38 total # scans: 26 42 64 32 59 44 # scans/hour : 9 14 21 11 20 15 Avg scan (sec): 81 111 74 137 75 94 # data tracks: 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 Total GBytes: 76 167 170 158 159 146 Total GB(M5): 68 149 151 140 141 130 # of tapes : 1.0 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 5.0 Total GBytes (M5) recorded: 648.6 # OF OBSERVATIONS BY BASELINE | Hb Ho Kk Tc Wf StnTotal ----------------------------------- Hb| 24 23 2 8 57 Ho| 21 20 7 72 Kk| 4 49 97 Tc| 12 38 Wf| 76 Number of 2-station scans: 71 Number of 3-station scans: 15 Number of 4-station scans: 9 Number of 5-station scans: 0 Total # of scans, observations: 95 170 =========================================================== HOBART12 HOBART26 KOKEE TIGOCONC WESTFORD Average PixMut 781 781 761 708 641 734 PixVis 781 781 781 781 781 781 % MutVis 100.0 100.0 97.4 90.7 82.1 94.0 PixCvred 23 34 59 30 53 39 Scans 26 42 64 32 59 44 % Eff 88.5 81.0 92.2 93.8 89.8 89.0 DistAvg 18.7 17.3 9.1 16.6 9.4 14.2 DistMax 54.0 64.7 25.5 49.0 35.2 45.7 Number of pixels 1692 Average Pixel radius 2.8 deg WARNING: Sky coverage only optimization is specified!! Condition number:0.7255E-08 Standard deviations of the unknown parameters: HOBART26 ATM0 1.743 ps HOBART26 ATM1 0.9467 ps/D KOKEE ATM0 2.290 ps KOKEE ATM1 1.540 ps/D TIGOCONC ATM0 21.95 ps TIGOCONC ATM1 7.171 ps/D WESTFORD ATM0 2.597 ps WESTFORD ATM1 1.718 ps/D KOKEE CLK0 0.1109E-01 ns KOKEE CLK1 0.1505 D-14 TIGOCONC CLK0 0.1048 ns TIGOCONC CLK1 0.2503 D-14 WESTFORD CLK0 0.1871E-01 ns WESTFORD CLK1 0.2610 D-14 TIGOCONC U 28.82 mm TIGOCONC E 9.324 mm TIGOCONC N 8.130 mm =========================================================== Recording mode Name Code GEOSX SX Recording mode setup for: HOBART12 HOBART26 KOKEE TIGOCONC WESTFORD 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 0.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 140.0 MHz rms spanned bw= 50.9 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 =========================================================== Minor Options Option Norm Wt Aux_Parm Astro Abs 3.00 EndScan Rel 1.00 NumObs Rel 1.00 StatIdle Abs 3.00 StatWt Abs 4.00 FFTFF =========================================================== Major Options Subnet HbHoKkTcWf SkyCov Yes AllBlGood Yes MinAngle 15 MinBetween 15 MinSunDist 15 MaxSlewTime 300 TimeWindow 24.00 MinSubNetSize 2 NumSubNet 1 Best 30 FillIn Yes FillMinSub 2 FillMinTime 120 FillBest 80 Add_ps 30.0 SNRWts Yes =========================================================== Tape types ID Station Tape length Density Passes Hb HOBART12 Mark5B Ho HOBART26 Mark5A Kk KOKEE Mark5A Tc TIGOCONC Mark5A Wf WESTFORD Mark5A =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 0) S-band (margin 0) Hb Ho Kk Tc Hb Ho Kk Tc Ho 12 Ho 12 Kk 12 20 Kk 12 15 Tc 12 15 15 Tc 12 12 12 Wf 12 20 20 15 Wf 12 15 15 12