JADE-1001 (Japanese Dynamic Earth observation by VLBI) 2010 Jan 14-15 Notes prepared by tanimoto@gsi.go.jp Geographical Survey Institute, Japan Session JD1001 Start 2010-014 02:00:00 Jan 14 End 2010-015 01:57:13 Jan 15 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 2010 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 5) S-band (margin 5) Ts Ai Cc Vm Ts Ai Cc Vm Ai 20 Ai 16 Cc 20 18 Cc 16 15 Vm 20 20 20 Vm 16 16 16 Vs 20 20 20 20 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 243 seconds Median SNR 40 at X-band 20 at S-band Number of observations 2067 observations Average scans per station 228 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/jd1001.skd for experiment JD1001 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 5.0 Min = 0.0 Max = 40.4 (Baseline Vm-Vs on 0607-157) RMS = 8.7 Total time: 1439 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 Vm=VERAMZSW Vs=VERAISGK Ts Ai Cc Vm Vs Avg % obs. time: 19 74 73 64 64 59 % cal. time: 0 0 0 0 0 0 % slew time: 12 12 10 14 13 13 % idle time: 68 13 16 21 22 29 total # scans: 302 286 250 244 228 262 # scans/hour : 13 12 10 10 10 11 Avg scan (sec): 55 224 251 225 243 199 # data tracks: 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 Total GBytes: 302 1153 1128 987 999 914 Total GB(M5): 268 1025 1002 878 888 812 # 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: 4061.4 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc Vm Vs StnTotal ----------------------------------- Ts| 238 212 242 176 868 Ai| 220 192 217 867 Cc| 194 206 832 Vm| 170 798 Vs| 769 Number of 2-station scans: 130 Number of 3-station scans: 37 Number of 4-station scans: 26 Number of 5-station scans: 167 Total # of scans, observations: 360 2067