JADE-0507 (Japanese Dynamic Earth observation by VLBI) 2005 JUL 14-15 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0507 Start 2005-195 02:00:00 JUL 14 End 2005-196 01:56:03 JUL 15 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 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 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 264 seconds Median SNR 25 at X-band 20 at S-band Number of observations 1152 observations Average scans per station 204 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/jd0507.skd for experiment JD0507 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 13.6 Min = .0 Max = 33.1 (Baseline Ai-Cc on 1741-038) RMS = 9.4 Total time: 1444 minutes ( 24.1 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 44 81 81 42 62 % cal. time: 2 2 2 2 2 % slew time: 9 6 5 16 9 % idle time: 43 10 10 38 25 total # scans: 217 208 203 189 204 # scans/hour : 9 8 8 7 8.5 Avg scan (sec): 178 338 347 196 264 Total GBytes: 698 1268 1270 669 977 Total GB(M5): 621 1127 1129 595 868 # of tapes : 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 4.0 Total GBytes (M5) recorded: 3473.2 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|217 208 203 189 600 Ai| 208 194 182 584 Cc| 203 176 573 S3| 189 547 Number of 2-station scans: 3 Number of 3-station scans: 45 Number of 4-station scans: 169 Total # of scans, observations: 217 1152