JADE-1501 (Japanese Dynamic Earth observation by VLBI) 2015 Jan 22-23 Notes prepared by GSI Geospacial Information Authority of Japan Session JD1501 Start 2015-022 02:00:00 Jan 22 End 2015-023 01:57:52 Jan 23 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 Kb K1 Kg Ts Vs Ai Cc Kb K1 Kg Ts Vs Cc 18 Cc 16 Kb 22 20 Kb 16 15 K1 20 18 0 K1 16 15 0 Kg 20 18 18 18 Kg 16 15 15 15 Ts 23 21 21 21 21 Ts 16 15 15 15 15 Vs 20 17 17 17 17 17 Vs 16 15 15 15 15 15 Vm 20 17 17 17 17 17 17 Vm 16 15 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 187 seconds Median SNR 35 at X-band 25 at S-band Number of observations 6041 observations Average scans per station 239 scans FREQUENCY SEQUENCE ================== Chann# Band Skyfreq(MHz) LOfreq(MHz) APPENDIX ======== SKED Summary from file /opt/sked/skd_files/jd1501.skd for experiment JD1501 (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 = 42.8 (Baseline Ai-Vm on 0537-441) RMS = 6.4 Total time: 1438 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Kb=KASHIM34 K1=KASHIM11 Kg=KOGANEI Ts=TSUKUB32 Vs=VERAISGK Vm=VERAMZSW Ai Cc Kb K1 Kg Ts Vs Vm Avg % obs. time: 66 84 7 52 52 6 62 66 49 % cal. time: 0 0 0 0 0 0 0 0 0 % slew time: 7 9 34 8 8 11 14 14 14 % idle time: 26 6 58 39 39 82 23 19 37 total # scans: 197 236 236 238 239 239 207 221 226 # scans/hour : 8 10 10 10 10 10 9 9 9 Avg scan (sec): 288 306 27 188 187 21 258 258 191 # data tracks: 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 16 Total GBytes: 1021 1299 113 806 806 92 962 1026 766 Total GB(M5): 908 1154 100 717 717 82 855 912 681 # 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: 5444.9 # OF OBSERVATIONS BY BASELINE | Ai Cc Kb K1 Kg Ts Vs Vm StnTotal -------------------------------------------------- Ai| 196 194 196 197 197 178 189 1347 Cc| 233 235 236 236 207 218 1561 Kb| 236 236 236 204 221 1560 K1| 238 238 206 221 1570 Kg| 239 207 221 1574 Ts| 207 221 1574 Vs| 198 1407 Vm| 1489 Number of 2-station scans: 0 Number of 3-station scans: 0 Number of 4-station scans: 0 Number of 5-station scans: 12 Number of 6-station scans: 6 Number of 7-station scans: 51 Number of 8-station scans: 170 Total # of scans, observations: 239 6041