JADE-0611 (Japanese Dynamic Earth observation by VLBI) 2006 Nov. 09-10 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0611 Start 2006-313 02:00:00 Nov. 09 End 2006-314 01:38:46 Nov. 10 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 2006 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 Cc Ts Ai Cc Ai 18 Ai 16 Cc 18 16 Cc 16 15 S3 18 0 0 S3 16 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 215 seconds Median SNR 25 at X-band 20 at S-band Number of observations 1286 observations Average scans per station 229 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 2229.99 1600.0 10 s 2234.99 1600.0 11 s 2249.99 1600.0 12 s 2279.99 1600.0 13 s 2309.99 1600.0 14 s 2319.99 1600.0 15 s 2334.99 1600.0 16 s 2344.99 1600.0 APPENDIX ======== SKED Summary from file /home/sked/skd_files/jd0611.skd for experiment JD0611 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 14.3 Min = .0 Max = 31.2 (Baseline Ts-Cc on 1741-038) RMS = 10.0 Total time: 1420 minutes ( 23.7 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 36 79 79 35 57 % cal. time: 2 2 2 2 2 % slew time: 11 6 7 20 11 % idle time: 49 10 10 41 28 total # scans: 243 228 227 220 229 # scans/hour : 10 9 9 9 9.6 Avg scan (sec): 129 297 298 139 215 Total GBytes: 567 1220 1218 550 889 Total GB(M5): 504 1084 1083 489 790 # of tapes : 2.0 1.0 1.0 2.0 tape change times (hhmm): 2018 0000 0000 2018 Total number of tapes: 6.0 Total GBytes (M5) recorded: 3161.3 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|243 223 222 219 664 Ai| 228 218 205 646 Cc| 227 199 639 S3| 220 623 Number of 2-station scans: 20 Number of 3-station scans: 34 Number of 4-station scans: 194 Total # of scans, observations: 248 1286