JADE-0411 (Japanese Dynamic Earth observation by VLBI) 2004 11 11-12 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0411 Start 2004-316 02:00:00 11 11 End 2004-317 01:54:50 11 12 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 2004 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 10 sec Corr. tape sync time 30 sec Minimum scan length 100 sec Maximum scan length 784 sec Minimum SNR by baseline for multi-baseline scans X-band (margin 7) S-band (margin 7) Ts Ai Cc Ts Ai Cc Ai 19 Ai 16 Cc 19 15 Cc 16 13 S3 17 0 0 S3 14 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 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 283 seconds Median SNR 20 at X-band 20 at S-band Number of observations 1107 observations Average scans per station 191 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/jd0411.skd for experiment JD0411 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 3.7 Min = .0 Max = 21.9 (Baseline Ts-Cc on 1611+343) RMS = 5.7 Total time: 1440 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 45 81 80 44 62 % cal. time: 2 2 2 2 2 % slew time: 9 6 5 17 9 % idle time: 42 10 11 36 25 total # scans: 198 194 187 186 191 # scans/hour : 8 8 7 7 8.0 Avg scan (sec): 198 360 370 205 283 Total GBytes: 708 1260 1247 686 976 Total GB(M5): 629 1120 1109 610 867 # of tapes : 7.0 13.0 12.0 7.0 tape change times (hhmm): 0610 0405 0405 0616 1008 0602 0602 1008 1315 0806 0810 1319 1656 1022 1022 1723 2016 1212 1212 2032 2324 1418 1430 2346 0000 1610 1617 0000 0000 1805 1821 0000 0000 2003 2016 0000 0000 2158 2211 0000 0000 2346 0001 0000 0000 0154 0000 0000 Total number of tapes: 39.0 Total GBytes (M5) recorded: 3469.0 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|198 194 187 186 567 Ai| 194 183 182 559 Cc| 187 175 545 S3| 186 543 Number of 2-station scans: 0 Number of 3-station scans: 27 Number of 4-station scans: 171 Total # of scans, observations: 198 1107