JADE-1008 (Japanese Dynamic Earth observation by VLBI) 2010 August 26-27 Notes prepared by r-kawabata@gsi.go.jp Geographical Survey Institute, Japan Session JD1008 Start 2010-238 02:00:00 August 26 End 2010-239 01:46:55 August 27 Stations 1 Ai A AIRA 2 Cc C CHICHI10 3 S3 J SINTOTU3 4 Kb O KASHIM34 5 Vm M VERAMZSW 6 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 Ai Aira Cc Chichijima S3 Shintotsukawa Kb KASHIM34 Vm VERA Mizusawa Vs VERA Ishigakijima SCHEDULE ======== This schedule was made by r-kawabata@gsi.go.jp 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 5) Ai Cc S3 Kb Vm Ai Cc S3 Kb Vm Cc 16 Cc 15 S3 10 10 S3 10 10 Kb 18 18 18 Kb 16 16 16 Vm 18 18 12 18 Vm 16 16 10 16 Vs 18 18 12 18 18 Vs 16 16 10 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 272 seconds Median SNR 35 at X-band 25 at S-band Number of observations 2071 observations Average scans per station 199 scans FREQUENCY SEQUENCE ================== Chann# Band Skyfreq(MHz) LOfreq(MHz) APPENDIX ======== SKED Summary from file /home/sked/skd_files/jd1008.skd for experiment JD1008 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 3.2 Min = 0.0 Max = 47.6 (Baseline Cc-Kb on 3C454.3 ) RMS = 7.2 Total time: 1437 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Kb=KASHIM34 Vm=VERAMZSW Vs=VERAISGK Ai Cc S3 Kb Vm Vs Avg % obs. time: 76 71 59 27 63 64 60 % cal. time: 0 0 0 0 0 0 0 % slew time: 8 7 9 29 13 10 13 % idle time: 15 21 31 43 23 25 27 total # scans: 218 208 139 218 199 161 190 # scans/hour : 9 9 6 9 8 7 8 Avg scan (sec): 301 295 367 106 272 343 280 # data tracks: 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 Total GBytes: 1183 1104 917 417 974 995 932 Total GB(M5): 1051 982 815 371 866 885 828 # of tapes : 1.0 1.0 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 6.0 Total GBytes (M5) recorded: 4969.6 # OF OBSERVATIONS BY BASELINE | Ai Cc S3 Kb Vm Vs StnTotal ---------------------------------------- Ai| 178 109 167 148 157 759 Cc| 109 172 149 140 748 S3| 122 132 92 564 Kb| 177 114 752 Vm| 105 711 Vs| 608 Number of 2-station scans: 94 Number of 3-station scans: 41 Number of 4-station scans: 34 Number of 5-station scans: 36 Number of 6-station scans: 86 Total # of scans, observations: 291 2071