JADE-0305 (Japanese Dynamic Earth observation by VLBI) 2003 June 17-18 Notes prepared by K.Wada Geographical Survey Institute, Japan Session JD0305 Start 2003-168 02:00:20 June 17 End 2003-169 02:00:10 June 18 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 K.Wada 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 270 seconds Median SNR 25 at X-band 20 at S-band Number of observations 1045 observations Average scans per station 194 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/jd0305.skd for experiment JD0305 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 3.2 Min = .0 Max = 22.2 (Baseline Ts-Cc on 0454-234) RMS = 5.2 Total time: 1442 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 53 73 76 40 61 % cal. time: 2 2 2 2 2 % slew time: 9 6 6 17 9 % idle time: 33 18 14 40 26 total # scans: 216 188 201 174 194 # scans/hour : 8 7 8 7 8.1 Avg scan (sec): 215 336 330 200 270 Total GBytes: 839 1138 1197 628 950 # of tapes : 9.0 12.0 12.0 7.0 tape change times (hhmm): 0334 0215 0228 0423 0600 0456 0456 0921 0857 0705 0718 1249 1127 0949 0921 1635 1417 1214 1141 2021 1724 1435 1343 0029 2037 1631 1552 0000 0029 1841 1752 0000 0000 2054 1952 0000 0000 2256 2157 0000 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|216 183 197 173 553 Ai| 188 174 155 512 Cc| 201 163 534 S3| 174 491 Number of 2-station scans: 34 Number of 3-station scans: 37 Number of 4-station scans: 150 Total # of scans, observations: 221 1045