JADE-0511 (Japanese Dynamic Earth observation by VLBI) 2005 NOV 10-11 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0511 Start 2005-314 02:00:00 NOV 10 End 2005-315 01:57:36 NOV 11 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 274 seconds Median SNR 25 at X-band 20 at S-band Number of observations 1154 observations Average scans per station 207 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 /home/sked/skd_files/jd0511.skd for experiment JD0511 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 13.0 Min = .0 Max = 29.2 (Baseline Ts-Cc on 1334-127) RMS = 8.8 Total time: 1445 minutes ( 24.1 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 48 84 83 46 65 % cal. time: 2 2 2 2 2 % slew time: 9 6 6 16 9 % idle time: 39 6 7 34 21 total # scans: 219 209 209 194 207 # scans/hour : 9 8 8 8 8.7 Avg scan (sec): 191 351 348 208 274 Total GBytes: 756 1323 1309 729 1030 Total GB(M5): 672 1176 1164 648 915 Total GBytes (M5) recorded: 3661.0 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|219 201 201 194 596 Ai| 209 199 181 581 Cc| 209 178 578 S3| 194 553 Number of 2-station scans: 23 Number of 3-station scans: 31 Number of 4-station scans: 173 Total # of scans, observations: 227 1154