JADE-1207 (Japanese Dynamic Earth observation by VLBI) 2012 july 12-13 Notes prepared by YM Geospatial Information Authority of Japan Session JD1207 Start 2012-194 02:00:00 july 12 End 2012-195 01:57:57 july 13 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 2012 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 YM using sked. Schedule setup parameters: Early start 0 sec Corr. tape sync time 0 sec Minimum scan length 90 sec Maximum scan length 480 sec Minimum SNR by baseline for multi-baseline scans X-band (margin 3) S-band (margin 0) Ts Ts S3 20 S3 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 seconds Median SNR 25 at X-band 20 at S-band Number of observations 293 observations Average scans per station scans FREQUENCY SEQUENCE ================== Chann# Band Skyfreq(MHz) LOfreq(MHz) 1 x 8204.99 7680.0 2 x 8214.99 7680.0 3 x 8244.99 7680.0 4 x 8304.99 7680.0 5 x 8414.99 7680.0 6 x 8494.99 7680.0 7 x 8544.99 7680.0 8 x 8564.99 7680.0 9 s 2232.99 1600.0 10 s 2240.99 1600.0 11 s 2256.99 1600.0 12 s 2312.99 1600.0 13 s 2344.99 1600.0 14 s 2352.99 1600.0 APPENDIX ======== SKED Summary from file /home/sked/skd_files/jd1207.skd for experiment JD1207 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 5.8 Min = 0.0 Max = 28.9 (Baseline Ts-S3 on 1739+522) RMS = 8.8 Total time: 1440 minutes ( 24.0 hours). Key: Ts=TSUKUB32 S3=SINTOTU3 Ts S3 Avg % obs. time: 74 74 74 % cal. time: 2 2 2 % slew time: 16 22 19 % idle time: 7 1 5 total # scans: 293 293 293 # scans/hour : 12 12 12 Avg scan (sec): 218 218 218 # data tracks: 16 16 # Mk5 tracks: 16 16 Total GBytes: 1152 1152 1152 Total GB(M5): 1024 1024 1024 # of tapes : 1.0 1.0 tape change times (hhmm): Total number of tapes: 2.0 Total GBytes (M5) recorded: 2048.6 # OF OBSERVATIONS BY BASELINE | Ts S3 StnTotal -------------------- Ts| 293 293 S3| 293 Number of 2-station scans: 293 Total # of scans, observations: 293 293