JADE-0506 (Japanese Dynamic Earth observation by VLBI) 2005 JUN 16-17 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0506 Start 2005-167 02:00:00 JUN 16 End 2005-168 01:53:54 JUN 17 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 LatLonH of ranked scans for selection, consider the last 24 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 290 seconds Median SNR 25 at X-band 20 at S-band Number of observations 1096 observations Average scans per station 192 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/jd0506.skd for experiment JD0506 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 12.6 Min = .0 Max = 30.8 (Baseline Ai-Cc on 1741-038) RMS = 7.3 Total time: 1435 minutes ( 23.9 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 47 82 84 45 65 % cal. time: 2 2 2 2 2 % slew time: 9 5 6 15 9 % idle time: 40 8 7 36 23 total # scans: 203 194 194 179 192 # scans/hour : 8 8 8 7 8.0 Avg scan (sec): 203 368 372 219 290 Total GBytes: 743 1285 1302 707 1010 Total GB(M5): 660 1142 1157 628 897 # of tapes : 1.0 1.0 1.0 1.0 Total GBytes (M5) recorded: 3589.4 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|203 194 194 179 567 Ai| 194 185 174 553 Cc| 194 170 549 S3| 179 523 Number of 2-station scans: 4 Number of 3-station scans: 34 Number of 4-station scans: 165 Total # of scans, observations: 203 1096