JADE-0509 (Japanese Dynamic Earth observation by VLBI) 2005 SEP 08-09 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0509 Start 2005-251 02:00:00 SEP 08 End 2005-252 01:53:14 SEP 09 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 245 seconds Median SNR 25 at X-band 20 at S-band Number of observations 1233 observations Average scans per station 214 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/jd0509.skd for experiment JD0509 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 14.1 Min = .0 Max = 32.6 (Baseline Ts-Ai on 1921-293) RMS = 8.4 Total time: 1434 minutes ( 23.9 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 43 79 79 42 61 % cal. time: 2 2 2 2 2 % slew time: 11 8 7 22 12 % idle time: 42 9 10 32 23 total # scans: 223 219 212 203 214 # scans/hour : 9 9 8 8 8.9 Avg scan (sec): 169 312 321 181 245 Total GBytes: 679 1231 1225 664 950 Total GB(M5): 603 1095 1088 590 845 # of tapes : 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 4.0 Total GBytes (M5) recorded: 3378.6 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|223 219 212 203 634 Ai| 219 208 199 626 Cc| 212 192 612 S3| 203 594 Number of 2-station scans: 0 Number of 3-station scans: 35 Number of 4-station scans: 188 Total # of scans, observations: 223 1233