JADE-0310 (Japanese Dynamic Earth observation by VLBI) 2003 November 12-13 Notes prepared by kwada@gsi.go.jp Geographical Survey Institute, Japan Session JD0310 Start 2003-316 02:00:00 November 12 End 2003-317 02:02:30 November 13 Stations 4 Ts TSUKUB32 T Ai AIRA A Cc CHICHI10 C S3 SINTOSU3 J 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 2003 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 kwada@gsi.go.jp using sked. Schedule setup parameters: Early start 0 sec Corr. tape sync time 30 sec Minimum scan length 100 sec Maximum scan length 784 sec Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 5) Ts Ai Cc Ts Ai Cc Ai 19 Ai 19 Cc 19 15 Cc 19 15 S3 15 0 0 S3 15 0 0 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 285 seconds Median SNR 20 at X-band 20 at S-band Number of observations 1091 observations Average scans per station 193 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 /corr/users1/schedule/skd_files/jd0310.skd for experiment JD0310 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 3.3 Min = .0 Max = 22.4 (Baseline Ts-Ai on 0454-234) RMS = 5.1 Total time: 1438 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 54 78 78 46 64 % cal. time: 2 2 2 2 2 % slew time: 8 5 5 15 8 % idle time: 33 13 13 36 24 total # scans: 204 198 198 175 193 # scans/hour : 8 8 8 7 8.1 Avg scan (sec): 232 342 342 227 285 Total GBytes: 852 1222 1222 716 1003 # of tapes : 9.0 13.0 13.0 8.0 tape change times (hhmm): 0439 0406 0406 0536 0759 0555 0555 0851 1104 0743 0743 1222 1414 0937 0937 1603 1713 1130 1130 1916 2012 1324 1324 2236 2227 1513 1513 0139 0105 1734 1734 0000 0000 1916 1916 0000 0000 2122 2122 0000 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|204 194 194 175 563 Ai| 198 198 165 557 Cc| 198 165 557 S3| 175 505 Number of 2-station scans: 14 Number of 3-station scans: 29 Number of 4-station scans: 165 Total # of scans, observations: 208 1091