JADE-1502 (Japanese Dynamic Earth observation by VLBI) 2015 Feb 19-20 Notes prepared by GSI Geospacial Information Authority of Japan Session JD1502 Start 2015-050 02:00:00 Feb 19 End 2015-051 01:53:10 Feb 20 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 2015 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 GSI using sked. Schedule setup parameters: Early start EA sec Corr. tape sync time 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) Ai Cc Is Kb K1 Kg Ts Vs Ai Cc Is Kb K1 Kg Ts Vs Cc 23 Cc 16 Is 29 22 Is 20 20 Kb 29 26 22 Kb 16 15 20 K1 26 23 22 0 K1 16 15 20 0 Kg 26 23 22 23 23 Kg 16 15 20 15 15 Ts 30 27 22 27 27 27 Ts 16 15 20 15 15 15 Vs 26 22 22 22 22 22 22 Vs 16 15 20 15 15 15 15 Vm 26 22 22 22 22 22 22 22 Vm 16 15 20 15 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 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 201 seconds Median SNR 50 at X-band 25 at S-band Number of observations 7394 observations Average scans per station 237 scans FREQUENCY SEQUENCE ================== Chann# Band Skyfreq(MHz) LOfreq(MHz) APPENDIX ======== SKED Summary from file /opt/sked/skd_files/jd1502.skd for experiment JD1502 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 1.7 Min = 0.0 Max = 40.1 (Baseline K1-Kg on 1334-127) RMS = 6.6 Total time: 1438 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Is=ISHIOKA Kb=KASHIM34 K1=KASHIM11 Kg=KOGANEI Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Ai Cc Is Kb K1 Kg Ts Vs Vm Avg % obs. time: 55 78 58 7 55 55 6 57 65 49 % cal. time: 0 0 0 0 0 0 0 0 0 0 % slew time: 7 10 6 35 8 9 12 14 16 13 % idle time: 37 11 36 56 35 35 80 28 18 38 total # scans: 177 233 227 234 237 240 241 190 216 221 # scans/hour : 7 10 9 10 10 10 10 8 9 9 Avg scan (sec): 266 290 219 27 201 199 23 258 261 193 # data tracks: 16 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 Total GBytes: 847 1216 895 116 857 860 101 881 1014 754 Total GB(M5): 753 1081 796 103 761 765 90 783 901 670 # of tapes : 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 9.0 Total GBytes (M5) recorded: 6033.1 # OF OBSERVATIONS BY BASELINE | Ai Cc Is Kb K1 Kg Ts Vs Vm StnTotal ------------------------------------------------------- Ai| 172 174 172 173 176 177 149 163 1356 Cc| 222 226 229 232 233 186 212 1712 Is| 220 223 226 227 190 210 1692 Kb| 233 234 234 186 214 1719 K1| 237 237 186 215 1733 Kg| 240 189 216 1750 Ts| 190 216 1754 Vs| 175 1451 Vm| 1621 Number of 2-station scans: 0 Number of 3-station scans: 0 Number of 4-station scans: 0 Number of 5-station scans: 10 Number of 6-station scans: 9 Number of 7-station scans: 23 Number of 8-station scans: 61 Number of 9-station scans: 138 Total # of scans, observations: 241 7394