JADE-1401 (Japanese Dynamic Earth observation by VLBI) 2014 january 16-17 Notes prepared by GSI Geospacial Information Authority of Japan Session JD1401 Start 2014-016 02:00:00 january 16 End 2014-017 01:48:41 january 17 Stations 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. In 2014 fiscal year, JADE session will be carried out once a month. NETWORK ======= The standard configuration of the JADE projests consists of some stations. Code : Station SCHEDULE ======== This schedule was made by GSI using sked. Schedule setup parameters: Early start EA sec Corr. tape sync time sec Minimum scan length sec Maximum scan length sec Minimum SNR by baseline for multi-baseline scans X-band (margin 3) S-band (margin 3) Ai Cc Kb Kg Ts Vs Ai Cc Kb Kg Ts Vs Cc 16 Cc 14 Kb 20 20 Kb 15 15 Kg 18 18 18 Kg 15 15 15 Ts 21 21 21 21 Ts 15 15 15 15 Vs 17 16 18 18 21 Vs 14 14 15 15 15 Vm 17 16 18 18 21 18 Vm 14 14 15 15 15 15 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 0 of ranked scans for selection, consider the last 0 hour of scans for sky coverage calculations, minimum : 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 31 seconds Median SNR 35 at X-band 20 at S-band Number of observations 3761 observations Average scans per station 188 scans FREQUENCY SEQUENCE ================== Chann# Band Skyfreq(MHz) LOfreq(MHz) APPENDIX ======== SKED Summary from file /opt/sked/skd_files/jd1401.skd for experiment JD1401 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 1.6 Min = 0.0 Max = 33.9 (Baseline Kb-Vs on 0552+398) RMS = 4.9 Total time: 1439 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Kb=KASHIM34 Kg=KOGANEI Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Ai Cc Kb Kg Ts Vs Vm Avg % obs. time: 85 86 9 57 7 79 79 57 % cal. time: 0 0 0 0 0 0 0 0 % slew time: 6 6 30 7 10 10 10 12 % idle time: 7 7 60 35 82 10 10 31 total # scans: 174 174 188 188 188 185 185 183 # scans/hour : 7 7 8 8 8 8 8 8 Avg scan (sec): 424 425 40 260 31 368 368 273 # data tracks: 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 Total GBytes: 1326 1330 134 880 107 1224 1224 889 Total GB(M5): 1179 1183 119 782 95 1088 1088 791 # of tapes : 1.0 1.0 1.0 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 7.0 Total GBytes (M5) recorded: 5533.8 # OF OBSERVATIONS BY BASELINE | Ai Cc Kb Kg Ts Vs Vm StnTotal --------------------------------------------- Ai| 174 174 174 174 171 171 1038 Cc| 174 174 174 171 171 1038 Kb| 188 188 185 185 1094 Kg| 188 185 185 1094 Ts| 185 185 1094 Vs| 185 1082 Vm| 1082 Number of 2-station scans: 0 Number of 3-station scans: 0 Number of 4-station scans: 0 Number of 5-station scans: 17 Number of 6-station scans: 0 Number of 7-station scans: 171 Total # of scans, observations: 188 3761