JADE-0603 (Japanese Dynamic Earth observation by VLBI) 2006 Mar. 23-24 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0603 Start 2006-082 02:00:00 Mar. 23 End 2006-083 01:59:09 Mar. 24 Stations 4 Ts TSUKUB32 T Ai AIRA A Cc CHICHI10 C Vs VERAMZSW S 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@cronos.ocn.ne.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 Vs 18 18 18 Vs 16 16 16 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 325 seconds Median SNR 45 at X-band 40 at S-band Number of observations 1259 observations Average scans per station 219 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/jd0603.skd for experiment JD0603 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 13.9 Min = .0 Max = 29.5 (Baseline Cc-Vs on 0607-157) RMS = 8.1 Total time: 1440 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 Vs=VERAISGK Ts Ai Cc Vs Avg % obs. time: 84 83 82 81 82 % cal. time: 2 2 2 2 2 % slew time: 9 6 6 9 7 % idle time: 3 8 8 6 6 total # scans: 221 222 219 216 219 # scans/hour : 9 9 9 9 9.1 Avg scan (sec): 330 323 325 325 325 Total GBytes: 1314 1291 1283 1266 1289 Total GB(M5): 1168 1148 1140 1125 1146 # of tapes : 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 4.0 Total GBytes (M5) recorded: 4583.6 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc Vs StnTotal ------------------------------ Ts|221 213 213 205 631 Ai| 222 209 214 636 Cc| 219 205 627 Vs| 216 624 Number of 2-station scans: 17 Number of 3-station scans: 16 Number of 4-station scans: 199 Total # of scans, observations: 232 1259