JADE-1204 (Japanese Dynamic Earth observation by VLBI) 2012 April 12-13 Notes prepared by RK Geographical Survey Institute, Japan Session JD1204 Start 2012-103 02:00:00 April 12 End 2012-104 01:57:31 April 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 RK 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 3) S-band (margin 3) Ts Ai Cc S3 Vm Vs K1 Ts Ai Cc S3 Vm Vs K1 Ai 20 Ai 16 Cc 19 17 Cc 15 14 S3 17 0 0 S3 15 0 0 Vm 20 18 17 0 Vm 16 15 14 0 Vs 20 18 17 0 18 Vs 16 15 14 0 15 K1 20 18 17 0 18 18 K1 16 15 14 0 15 15 Kg 20 18 17 0 18 18 18 Kg 16 15 14 0 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 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 270 seconds Median SNR 30 at X-band 20 at S-band Number of observations 5925 observations Average scans per station 232 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/jd1204.skd for experiment JD1204 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 4.2 Min = 0.0 Max = 21.4 (Baseline Ts-S3 on 0607-157) RMS = 6.2 Total time: 1440 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Vm=VERAMZSW Vs=VERAISGK K1=KASHIM11 Kg=KOGANEI Ts Ai Cc S3 Vm Vs K1 Kg Avg % obs. time: 62 75 66 62 72 65 56 55 64 % cal. time: 0 0 0 0 0 0 0 0 0 % slew time: 14 9 9 19 17 15 11 11 14 % idle time: 23 15 24 18 10 19 32 33 22 total # scans: 270 213 199 267 232 209 275 274 242 # scans/hour : 11 9 8 11 10 9 11 11 10 Avg scan (sec): 199 304 287 199 270 269 175 174 233 # data tracks: 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 16 Total GBytes: 965 1164 1027 958 1126 1011 869 858 997 Total GB(M5): 858 1034 912 851 1001 899 772 763 886 # of tapes : 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 8.0 Total GBytes (M5) recorded: 7090.9 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 Vm Vs K1 Kg StnTotal -------------------------------------------------- Ts| 212 197 254 223 193 259 260 1598 Ai| 185 210 203 176 208 208 1402 Cc| 192 184 158 191 191 1298 S3| 224 189 248 247 1564 Vm| 186 224 224 1468 Vs| 203 203 1308 K1| 273 1606 Kg| 1606 Number of 2-station scans: 14 Number of 3-station scans: 22 Number of 4-station scans: 31 Number of 5-station scans: 12 Number of 6-station scans: 16 Number of 7-station scans: 51 Number of 8-station scans: 151 Total # of scans, observations: 297 5925