JADE-1201 (Japanese Dynamic Earth observation by VLBI) 2012 November 12-13 Notes prepared by YM Geographical Survey Institute, Japan Session JD1201 Start 2012-012 02:00:00 November 12 End 2012-013 01:56:29 November 13 Stations 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 2012 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 SCHEDULE ======== This schedule was made by YM using sked. Schedule setup parameters: Early start sec Corr. tape sync time ON sec Minimum scan length sec Maximum scan length sec Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 3) Ai Cc Ts Vs Ai Cc Ts Vs Cc 18 Cc 15 Ts 18 18 Ts 15 15 Vs 18 18 18 Vs 15 15 15 Vm 18 18 18 18 Vm 15 15 15 15 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 3 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 194 seconds Median SNR 40 at X-band 20 at S-band Number of observations 2762 observations Average scans per station 312 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/jd1201.skd for experiment JD1201 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 5.6 Min = 0.0 Max = 47.1 (Baseline Ai-Vm on 0537-441) RMS = 10.7 Total time: 1438 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Ai Cc Ts Vs Vm Avg % obs. time: 76 79 13 62 70 60 % cal. time: 2 2 2 1 2 2 % slew time: 11 11 16 17 20 16 % idle time: 10 7 68 18 7 23 total # scans: 302 312 330 256 312 302 # scans/hour : 13 13 14 11 13 13 Avg scan (sec): 216 217 35 211 194 174 # data tracks: 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 Total GBytes: 1176 1221 209 970 1089 933 Total GB(M5): 1045 1085 186 863 968 829 # 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: 4146.4 # OF OBSERVATIONS BY BASELINE | Ai Cc Ts Vs Vm StnTotal ----------------------------------- Ai| 293 293 245 287 1118 Cc| 306 241 292 1132 Ts| 252 308 1159 Vs| 245 983 Vm| 1132 Number of 2-station scans: 31 Number of 3-station scans: 21 Number of 4-station scans: 53 Number of 5-station scans: 235 Total # of scans, observations: 340 2762