JADE-0505 (Japanese Dynamic Earth observation by VLBI) 2005 MAY 26-27 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0505 Start 2005-146 02:00:00 MAY 26 End 2005-147 01:50:30 MAY 27 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 60 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 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 280 seconds Median SNR 25 at X-band 20 at S-band Number of observations 1142 observations Average scans per station 198 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/jd0505.skd for experiment JD0505 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 13.2 Min = .0 Max = 30.8 (Baseline Ai-Cc on 1741-038) RMS = 8.0 Total time: 1441 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 47 82 81 46 64 % cal. time: 2 2 2 2 2 % slew time: 8 5 5 15 8 % idle time: 40 9 10 35 24 total # scans: 207 202 196 189 198 # scans/hour : 8 8 8 7 8.3 Avg scan (sec): 200 351 359 211 280 Total GBytes: 746 1277 1270 720 1004 Total GB(M5): 663 1135 1128 640 892 # of tapes : 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 4.0 Total GBytes (M5) recorded: 3568.3 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|207 202 196 189 587 Ai| 202 191 186 579 Cc| 196 178 565 S3| 189 553 Number of 2-station scans: 2 Number of 3-station scans: 30 Number of 4-station scans: 175 Total # of scans, observations: 207 1142