JADE-0601 (Japanese Dynamic Earth observation by VLBI) 2006 JAN 12-13 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0601 Start 2006-012 02:00:00 JAN 12 End 2006-013 01:51:57 JAN 13 Stations 4 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. In 2005 fiscal year, JADE session will be carried out once a month. NETWORK ======= The standard configuration of the JADE projests consists of four stations. Station: Code Tsukuba Ts Aira Ai Chichijima Cc Shintotsukawa S3 SCHEDULE ======== This schedule was made by fujisaku@gsi.go.jp using sked. Schedule setup parameters: Early start 0 sec Corr. tape sync time 0 sec Minimum scan length 40 sec Maximum scan length 784 sec Minimum SNR by baseline for multi-baseline scans X-band (margin 8) S-band (margin 8) Ts Ai Ts Ai Ai 18 Ai 16 Cc 18 16 Cc 16 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 30% 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 seconds Median SNR 80 at X-band 65 at S-band Number of observations 608 observations Average scans per station 207 scans FREQUENCY SEQUENCE ================== Chann# Band Skyfreq(MHz) LOfreq(MHz) 1 x 8209.99 7680.0 2 x 8219.99 7680.0 3 x 8249.99 7680.0 4 x 8309.99 7680.0 5 x 8419.99 7680.0 6 x 8499.99 7680.0 7 x 8549.99 7680.0 8 x 8569.99 7680.0 9 s 2239.99 1600.0 10 s 2244.99 1600.0 11 s 2259.99 1600.0 12 s 2289.99 1600.0 13 s 2319.99 1600.0 14 s 2329.99 1600.0 15 s 2344.99 1600.0 16 s 2354.99 1600.0 APPENDIX ======== SKED Summary from file /home/sked/skd_files/jd0601.skd for experiment JD0601 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 13.1 Min = .0 Max = 29.4 (Baseline Ts-Ai on 1424-418) RMS = 9.5 Total time: 1444 minutes ( 24.1 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 Ts Ai Cc Avg % obs. time: 87 86 84 85 % cal. time: 2 2 2 2 % slew time: 9 6 5 7 % idle time: 1 5 7 4 total # scans: 211 207 204 207 # scans/hour : 8 8 8 8.6 Avg scan (sec): 358 361 357 358 Total GBytes: 1362 1346 1310 1340 Total GB(M5): 1211 1196 1165 1191 # of tapes : 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 3.0 Total GBytes (M5) recorded: 3573.3 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc StnTotal -------------------------- Ts|211 206 203 409 Ai| 207 199 405 Cc| 204 402 Number of 2-station scans: 14 Number of 3-station scans: 198 Total # of scans, observations: 212 608