JADE-1312 (Japanese Dynamic Earth observation by VLBI) 2013 December 04-05 Notes prepared by GSI Geospacial Information Authority of Japan Session JD1312 Start 2013-338 02:00:00 December 04 End 2013-339 01:47:13 December 05 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 2013 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 Kg S3 Ai Cc Kb Kg S3 Cc 17 Cc 15 Kb 20 20 Kb 15 15 Kg 17 17 17 Kg 15 15 15 S3 0 0 19 0 S3 0 0 15 0 Ts 21 21 21 18 20 Ts 16 16 16 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 324 seconds Median SNR 40 at X-band 30 at S-band Number of observations 2773 observations Average scans per station 188 scans FREQUENCY SEQUENCE ================== Chann# Band Skyfreq(MHz) LOfreq(MHz) APPENDIX ======== SKED Summary from file /opt/sked/skd_files/jd1312.skd for experiment JD1312 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 1.5 Min = 0.0 Max = 34.0 (Baseline Ai-S3 on 0454-234) RMS = 5.3 Total time: 1437 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Kb=KASHIM34 Kg=KOGANEI S3=SINTOTU3 Ts=TSUKUB32 Ai Cc Kb Kg S3 Ts Avg % obs. time: 79 79 71 46 71 67 69 % cal. time: 0 0 0 0 0 0 0 % slew time: 6 7 26 6 12 9 11 % idle time: 13 13 2 47 17 23 20 total # scans: 179 179 200 200 188 200 191 # scans/hour : 7 7 8 8 8 8 8 Avg scan (sec): 381 381 305 197 324 288 312 # data tracks: 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 Total GBytes: 1228 1228 1099 708 1096 1036 1066 Total GB(M5): 1092 1092 977 630 974 921 948 # 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: 5686.1 # OF OBSERVATIONS BY BASELINE | Ai Cc Kb Kg S3 Ts StnTotal ---------------------------------------- Ai| 179 179 179 178 179 894 Cc| 179 179 178 179 894 Kb| 200 188 200 946 Kg| 188 200 946 S3| 188 920 Ts| 946 Number of 2-station scans: 0 Number of 3-station scans: 11 Number of 4-station scans: 10 Number of 5-station scans: 1 Number of 6-station scans: 178 Total # of scans, observations: 200 2773