JADE-0905 (Japanese Dynamic Earth observation by VLBI) 2009 May 21-22 Notes prepared by tanimoto@gsi.go.jp Geographical Survey Institute, Japan Session JD0905 Start 2009-141 02:00:00 May 21 End 2009-142 01:51:51 May 22 Stations 1 Ts T TSUKUB32 2 Ai A AIRA 3 Cc C CHICHI10 4 S3 J SINTOTU3 5 Vm M VERAMZSW 6 Vs S VERAISGK 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 2009 fiscal year, JADE session will be carried out once a month. NETWORK ======= The standard configuration of the JADE projests consists of some stations. Code : Station Ts Tsukuba Ai Aira Cc Chichijima S3 Shintotsukawa Vm VERA Mizusawa Vs VERA Ishigakijima SCHEDULE ======== This schedule was made by tanimoto@gsi.go.jp using sked. Schedule setup parameters: Early start 0 sec Corr. tape sync time 0 sec Minimum scan length 30 sec Maximum scan length 600 sec Minimum SNR by baseline for multi-baseline scans X-band (margin 8) S-band (margin 8) Ts Ai Cc S3 Vm Ts Ai Cc S3 Vm Ai 18 Ai 16 Cc 18 16 Cc 16 15 S3 18 0 0 S3 16 0 0 Vm 18 18 18 15 Vm 16 16 16 10 Vs 18 18 18 15 18 Vs 16 16 16 10 16 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 0 of ranked scans for selection, consider the last 0 hour of scans for sky coverage calculations, minimum : 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 395 seconds Median SNR 30 at X-band 20 at S-band Number of observations 2329 observations Average scans per station 176 scans FREQUENCY SEQUENCE ================== Chann# Band Skyfreq(MHz) LOfreq(MHz) 1 x 8204.99 7680.0 2 x 8214.99 7680.0 3 x 8244.99 7680.0 4 x 8304.99 7680.0 5 x 8414.99 7680.0 6 x 8494.99 7680.0 7 x 8544.99 7680.0 8 x 8564.99 7680.0 9 s 2232.99 1600.0 10 s 2240.99 1600.0 11 s 2256.99 1600.0 12 s 2312.99 1600.0 13 s 2344.99 1600.0 14 s 2352.99 1600.0 APPENDIX ======== SKED Summary from file /home/sked/skd_files/jd0905.skd for experiment JD0905 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 8.0 Min = 0.0 Max = 29.1 (Baseline Ts-Cc on 1741-038) RMS = 7.4 Total time: 1436 minutes ( 23.9 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Vm=VERAMZSW Vs=VERAISGK Ts Ai Cc S3 Vm Vs Avg % obs. time: 25 53 54 81 81 83 63 % cal. time: 0 0 0 0 0 0 0 % slew time: 6 5 5 7 8 8 7 % idle time: 69 41 39 11 10 9 30 total # scans: 184 180 177 150 176 162 171 # scans/hour : 8 8 7 6 7 7 7 Avg scan (sec): 115 252 263 463 395 441 321 # data tracks: 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 Total GBytes: 381 817 839 1251 1252 1286 971 Total GB(M5): 339 726 746 1112 1113 1143 863 # of tapes : 1.0 1.0 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 6.0 Total GBytes (M5) recorded: 5179.2 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 Vm Vs StnTotal ---------------------------------------- Ts| 166 169 150 175 148 808 Ai| 170 147 160 161 804 Cc| 145 160 155 799 S3| 149 131 722 Vm| 143 787 Vs| 738 Number of 2-station scans: 19 Number of 3-station scans: 15 Number of 4-station scans: 10 Number of 5-station scans: 24 Number of 6-station scans: 131 Total # of scans, observations: 199 2329