JADE-0307 (Japanese Dynamic Earth observation by VLBI) 2003 August 20-21 Notes prepared by skuri Geographical Survey Institute, Japan Session JD0307 Start 2003-232 02:00:00 August 20 End 2003-233 02:11:00 August 21 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 2003 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 skuri using sked. Schedule setup parameters: Early start 0 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 5) S-band (margin 5) Ts Ai Cc Ts Ai Cc Ai 19 Ai 19 Cc 19 15 Cc 19 15 S3 15 0 0 S3 15 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 30% of ranked scans for selection, consider the last 4 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 278 seconds Median SNR 20 at X-band 20 at S-band Number of observations 1103 observations Average scans per station 196 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/jd0307.skd for experiment JD0307 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 3.4 Min = .0 Max = 20.0 (Baseline Ts-Ai on 1741-038) RMS = 4.9 Total time: 1451 minutes ( 24.2 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 50 80 80 41 63 % cal. time: 2 2 2 1 2 % slew time: 8 5 5 14 8 % idle time: 38 11 11 42 25 total # scans: 206 203 203 172 196 # scans/hour : 8 8 8 7 8.2 Avg scan (sec): 214 346 346 208 278 Total GBytes: 795 1267 1267 645 993 # of tapes : 8.0 13.0 13.0 7.0 tape change times (hhmm): 0459 0411 0411 0607 0751 0607 0607 0945 1132 0804 0804 1321 1508 0945 0945 1716 1820 1144 1144 2135 2209 1339 1339 0157 0046 1534 1534 0000 0000 1753 1753 0000 0000 1937 1937 0000 0000 2135 2135 0000 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|206 199 199 172 570 Ai| 203 203 165 567 Cc| 203 165 567 S3| 172 502 Number of 2-station scans: 11 Number of 3-station scans: 34 Number of 4-station scans: 165 Total # of scans, observations: 210 1103