JADE-0504 (Japanese Dynamic Earth observation by VLBI) 2005 APR 14-15 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0504 Start 2005-104 02:00:00 APR 14 End 2005-105 01:59:40 APR 15 Stations 4 Ts TSUKUB32 T Ai AIRA A Cc CHICHI10 C 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 60 sec Maximum scan length 784 sec Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 5) Ts Ai Ts Ai Ai 19 Ai 16 Cc 19 16 Cc 16 13 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 0 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 seconds Median SNR 40 at X-band 35 at S-band Number of observations 710 observations Average scans per station 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/jd0504.skd for experiment JD0504 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 15.9 Min = .0 Max = 33.4 (Baseline Ts-Cc on 1741-038) RMS = 10.4 Total time: 1440 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 Ts Ai Cc Avg % obs. time: 19 78 79 59 % cal. time: 2 2 2 2 % slew time: 11 7 7 8 % idle time: 65 10 9 28 total # scans: 258 244 243 248 # scans/hour : 10 10 10 10.3 Avg scan (sec): 65 279 284 209 Total GBytes: 305 1228 1242 926 Total GB(M5): 271 1091 1104 823 # of tapes : 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 3.0 Total GBytes (M5) recorded: 2468.1 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc StnTotal -------------------------- Ts|258 242 241 483 Ai| 244 227 469 Cc| 243 468 Number of 2-station scans: 35 Number of 3-station scans: 225 Total # of scans, observations: 260 710