JADE-0903 (Japanese Dynamic Earth observation by VLBI) 2009 MAR 05-06 Notes prepared by tanimoto@gsi.go.jp Geographical Survey Institute, Japan Session JD0903 Start 2009-064 02:00:00 MAR 05 End 2009-065 01:53:17 MAR 06 Stations 1 Ts T TSUKUB32 2 Ai A AIRA 3 Cc C CHICHI10 4 Vm M VERAMZSW 5 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 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 Vm Ts Ai Cc Vm Ai 18 Ai 16 Cc 18 16 Cc 16 15 Vm 18 18 18 Vm 16 16 16 Vs 18 18 18 18 Vs 16 16 16 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 267 seconds Median SNR 35 at X-band 20 at S-band Number of observations 2066 observations Average scans per station 203 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/jd0903.skd for experiment JD0903 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 4.4 Min = 0.0 Max = 37.6 (Baseline Ts-Vm on 0537-441) RMS = 7.4 Total time: 1434 minutes ( 23.9 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 Vm=VERAMZSW Vs=VERAISGK Ts Ai Cc Vm Vs Avg % obs. time: 21 77 70 66 63 59 % cal. time: 0 0 0 0 0 0 % slew time: 13 9 7 11 10 11 % idle time: 65 13 22 21 25 30 total # scans: 274 258 213 228 203 235 # scans/hour : 11 11 9 10 8 10 Avg scan (sec): 64 258 282 250 267 224 # data tracks: 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 Total GBytes: 318 1200 1081 1027 976 920 Total GB(M5): 282 1067 961 913 868 818 # of tapes : 1.0 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 5.0 Total GBytes (M5) recorded: 4090.7 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc Vm Vs StnTotal ----------------------------------- Ts| 247 207 228 192 874 Ai| 205 203 202 857 Cc| 201 193 806 Vm| 188 820 Vs| 775 Number of 2-station scans: 70 Number of 3-station scans: 12 Number of 4-station scans: 20 Number of 5-station scans: 184 Total # of scans, observations: 286 2066