JADE-0610 (Japanese Dynamic Earth observation by VLBI) 2006 Oct. 12-13 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0610 Start 2006-285 06:00:00 Oct. 12 End 2006-286 05:53:39 Oct. 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 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 212 seconds Median SNR 25 at X-band 20 at S-band Number of observations 1323 observations Average scans per station 235 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/jd0610.skd for experiment JD0610 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 12.7 Min = .0 Max = 32.0 (Baseline Cc-S3 on 0059+581) RMS = 9.7 Total time: 1435 minutes ( 23.9 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 7 7 20 11 % idle time: 49 10 10 41 27 total # scans: 251 234 229 226 235 # scans/hour : 10 9 9 9 9.8 Avg scan (sec): 124 293 298 134 212 Total GBytes: 564 1234 1230 546 894 Total GB(M5): 501 1097 1094 485 795 # of tapes : 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 4.0 Total GBytes (M5) recorded: 3179.1 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|251 232 227 226 685 Ai| 234 221 213 666 Cc| 229 204 652 S3| 226 643 Number of 2-station scans: 21 Number of 3-station scans: 30 Number of 4-station scans: 202 Total # of scans, observations: 253 1323