JADE-1407 (Japanese Dynamic Earth observation by VLBI) 2014 July 17-18 Notes prepared by GSI Geospacial Information Authority of Japan Session JD1407 Start 2014-198 02:00:00 July 17 End 2014-199 01:55:49 July 18 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 K1 Kg Ai Cc Kb K1 Kg Cc 16 Cc 15 Kb 20 20 Kb 15 15 K1 18 18 18 K1 15 15 15 Kg 18 18 18 18 Kg 15 15 15 15 Ts 21 21 21 21 21 Ts 15 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 172 seconds Median SNR 30 at X-band 25 at S-band Number of observations 3915 observations Average scans per station 266 scans FREQUENCY SEQUENCE ================== Chann# Band Skyfreq(MHz) LOfreq(MHz) APPENDIX ======== SKED Summary from file /opt/sked/skd_files/jd1407.skd for experiment JD1407 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 2.1 Min = 0.0 Max = 36.4 (Baseline Ai-Kb on 0537-441) RMS = 7.1 Total time: 1439 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Kb=KASHIM34 K1=KASHIM11 Kg=KOGANEI Ts=TSUKUB32 Ai Cc Kb K1 Kg Ts Avg % obs. time: 83 76 8 53 53 7 47 % cal. time: 0 0 0 0 0 0 0 % slew time: 11 10 38 9 9 13 16 % idle time: 5 12 53 37 37 79 38 total # scans: 266 251 266 266 266 266 263 # scans/hour : 11 10 11 11 11 11 11 Avg scan (sec): 270 263 25 173 172 22 153 # data tracks: 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 Total GBytes: 1295 1187 120 826 824 104 726 Total GB(M5): 1151 1055 107 734 732 92 645 # of tapes : 1.0 1.0 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 6.0 Total GBytes (M5) recorded: 3871.5 # OF OBSERVATIONS BY BASELINE | Ai Cc Kb K1 Kg Ts StnTotal ---------------------------------------- Ai| 251 266 266 266 266 1315 Cc| 251 251 251 251 1255 Kb| 266 266 266 1315 K1| 266 266 1315 Kg| 266 1315 Ts| 1315 Number of 2-station scans: 0 Number of 3-station scans: 0 Number of 4-station scans: 0 Number of 5-station scans: 15 Number of 6-station scans: 251 Total # of scans, observations: 266 3915