JADE-1003 (Japanese Dynamic Earth observation by VLBI) 2010 March 11-12 Notes prepared by tanimoto@gsi.go.jp Geographical Survey Institute, Japan Session JD1003 Start 2010-070 02:00:00 March 11 End 2010-071 01:58:07 March 12 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 258 seconds Median SNR 35 at X-band 20 at S-band Number of observations 2047 observations Average scans per station 224 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/jd1003.skd for experiment JD1003 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 4.9 Min = 0.0 Max = 39.3 (Baseline Ai-Cc on 0607-157) RMS = 8.7 Total time: 1440 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 Vm=VERAMZSW Vs=VERAISGK Ts Ai Cc Vm Vs Avg % obs. time: 18 73 71 65 67 59 % cal. time: 0 0 0 0 0 0 % slew time: 12 11 10 16 13 13 % idle time: 69 16 18 18 19 28 total # scans: 295 274 250 250 224 258 # scans/hour : 12 11 10 10 9 11 Avg scan (sec): 54 229 247 225 258 202 # data tracks: 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 Total GBytes: 285 1130 1109 1011 1042 915 Total GB(M5): 253 1004 986 899 926 814 # 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: 4068.5 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc Vm Vs StnTotal ----------------------------------- Ts| 227 216 244 173 860 Ai| 217 198 212 854 Cc| 195 196 824 Vm| 169 806 Vs| 750 Number of 2-station scans: 123 Number of 3-station scans: 36 Number of 4-station scans: 31 Number of 5-station scans: 163 Total # of scans, observations: 353 2047