JADE-0409 (Japanese Dynamic Earth observation by VLBI) 2004 Sep 14-15 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0409 Start 2004-258 02:00:00 Sep 14 End 2004-259 01:58:30 Sep 15 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 304 seconds Median SNR 25 at X-band 20 at S-band Number of observations 1030 observations Average scans per station 178 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/jd0409.skd for experiment JD0409 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 3.5 Min = .0 Max = 24.5 (Baseline Ts-S3 on 1622-253) RMS = 5.3 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: 8 5 5 15 8 % idle time: 43 11 11 38 26 total # scans: 185 180 175 174 178 # scans/hour : 7 7 7 7 7.4 Avg scan (sec): 213 388 398 218 304 Total GBytes: 711 1260 1255 685 978 Total GB(M5): 632 1120 1116 609 870 # of tapes : 7.0 13.0 13.0 7.0 tape change times (hhmm): 0528 0403 0403 0542 0830 0549 0549 0915 1218 0805 0747 1253 1544 1005 0958 1633 1912 1214 1203 1941 2225 1414 1414 2322 0000 1607 1618 0000 0000 1800 1818 0000 0000 2009 2009 0000 0000 2158 2158 0000 0000 2342 2342 0000 0000 0134 0134 0000 Total number of tapes: 40.0 Total GBytes (M5) recorded: 3478.7 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|185 179 174 174 527 Ai| 180 171 169 519 Cc| 175 163 508 S3| 174 506 Number of 2-station scans: 4 Number of 3-station scans: 22 Number of 4-station scans: 160 Total # of scans, observations: 186 1030