JADE-1209 (Japanese Dynamic Earth observation by VLBI) 2012 september 13-14 Notes prepared by YM Geospatial Information Authority of Japan Session JD1209 Start 2012-257 02:00:00 september 13 End 2012-258 01:55:08 september 14 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 297 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/jd1209b.skd for experiment JD1209 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 5.9 Min = 0.0 Max = 30.9 (Baseline Ts-S3 on 0727-115) RMS = 9.0 Total time: 1438 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: 8 1 5 total # scans: 297 297 297 # scans/hour : 12 12 12 Avg scan (sec): 215 215 215 # data tracks: 16 16 # Mk5 tracks: 16 16 Total GBytes: 1149 1149 1149 Total GB(M5): 1022 1022 1022 # of tapes : 1.0 1.0 tape change times (hhmm): Total number of tapes: 2.0 Total GBytes (M5) recorded: 2043.5 # OF OBSERVATIONS BY BASELINE | Ts S3 StnTotal -------------------- Ts| 297 297 S3| 297 Number of 2-station scans: 297 Total # of scans, observations: 297 297