JADE-0302 (Japanese Dynamic Earth observation by VLBI) 2003 Feb. 13-14 Notes prepared by Shinobu Kurihara Geographical Survey Institute, Japan Session JD0302 Start 2003-044 02:01:10 FEB. 13 End 2003-045 01:57:10 FEB. 14 Stations 3 Ts TSUKUB32 T Ai AIRA A Cc CHICHI10 C Duration: 24 hours Correlator: TSUKUBA(GSI) PURPOSE ======= The purpose of the JADE sessions is to monitor the plate motion and the local crustal movement around Japan. NETWORK ======= The standard configuration of the JADE projests consists of four stations. Station: Code Tsukuba Ts Aira Ai Chichijima Cc SCHEDULE ======== This schedule was made by DRUDG shift option. Original schedule is jd0301.skd. Following description is same as session JD0301. Schedule setup parameters: Early start 0 sec Corr. tape sync time 30 sec Minimum scan length 100 sec Maximum scan length 784 sec Minimum SNR by baseline for multi-baseline scans X-band (margin 10) S-band (margin 7) Ts Ai Ts Ai Ai 20 Ai 15 Cc 20 17 Cc 15 14 Automatic scheduling setup: optimize for uniform sky coverage at all stations, maximize the number of observations, minimize slewing time, minimize time between scans, consider the top 20% of ranked scans for selection, consider the last 4 hour of scans for sky coverage calculations, minimum 30 min between scans on the same source. The characteristics of the generated schedule are listed below. These will vary slightly for each schedule that is generated. Schedule characteristics: Average scan length 292 seconds Median SNR 35.0 at X-band 35.0 at S-band Number of observations 556 observations Average scans per station 197 scans FREQUENCY SEQUENCE ================== Name Code K4-16SX K4 Recording mode setup for: TSUKUB32 AIRA CHICHI10 Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk34K4 128.000 Mbits 64.000 MHz 16 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 0(*0) 0 211.90 mm/s X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 115.0 MHz rms spanned bw= 42.8 MHz Effective number of channels recorded per sub-pass X S Total 8.000 8.000 16.000 1 X 8209.99 MHz 2 X 8219.99 MHz 3 X 8249.99 MHz 4 X 8309.99 MHz 5 X 8419.99 MHz 6 X 8499.99 MHz 7 X 8549.99 MHz 8 X 8569.99 MHz 9 S 2239.99 MHz 10 S 2244.99 MHz 11 S 2259.99 MHz 12 S 2289.99 MHz 13 S 2319.99 MHz 14 S 2329.99 MHz 15 S 2344.99 MHz 16 S 2354.99 MHz APPENDIX ======== SKED Summary from file /corr/users1/schedule/skd_files/jd0302.skd for experiment JD0302 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 3.4 Min = .0 Max = 17.5 (Baseline Ts-Ai on CTA26 ) RMS = 4.7 Total time: 1437 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 Ts Ai Cc Avg % obs. time: 42 77 78 66 % cal. time: 2 2 2 2 % slew time: 11 7 7 8 % idle time: 43 13 11 22 total # scans: 210 191 192 197 # scans/hour : 8 7 8 8.2 Avg scan (sec): 174 349 353 292 Total GBytes: 660 1201 1222 1027 # of tapes : 8.0 12.0 13.0 tape change times (hhmm): 0534 0322 0301 0925 0538 0500 1235 0743 0712 1608 0956 0918 1912 1159 1131 2344 1419 1332 0106 1621 1540 0000 1838 1744 0000 2043 1944 0000 2243 2158 NOTE: This schedules uses 12 tapes. Tapechanges times are listed for the first 10 tapes. # OF OBSERVATIONS BY BASELINE | Ts Ai Cc StnTotal -------------------------- Ts|210 191 192 383 Ai| 191 173 364 Cc| 192 365 Number of 2-station scans: 37 Number of 3-station scans: 173 Total # of scans, observations: 210 556