JADE-0911 (Japanese Dynamic Earth observation by VLBI) 2009 Nov 12-13 Notes prepared by tanimoto@gsi.go.jp Geographical Survey Institute, Japan Session JD0911 Start 2009-316 02:00:00 Nov 12 End 2009-317 01:54:59 Nov 13 Stations 1 Ts T TSUKUB32 2 Ai A AIRA 3 Cc C CHICHI10 4 S3 J SINTOTU3 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 2009 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 Ts Tsukuba Ai Aira Cc Chichijima S3 Shintotsukawa SCHEDULE ======== This schedule was made by tanimoto@gsi.go.jp using sked. Schedule setup parameters: Early start 0 sec Corr. tape sync time 0 sec Minimum scan length 30 sec Maximum scan length 600 sec Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 5) Ts Ai Cc Ts Ai Cc Ai 20 Ai 16 Cc 18 18 Cc 15 15 S3 20 9 9 S3 16 8 8 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 249 seconds Median SNR 25 at X-band 25 at S-band Number of observations 1038 observations Average scans per station 238 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/jd0911.skd for experiment JD0911 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 4.4 Min = 0.0 Max = 34.5 (Baseline Ts-Ai on 0607-157) RMS = 7.8 Total time: 1436 minutes ( 23.9 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 44 80 63 61 62 % cal. time: 0 0 0 0 0 % slew time: 13 12 7 9 11 % idle time: 42 7 29 29 27 total # scans: 315 309 180 150 238 # scans/hour : 13 13 8 6 10 Avg scan (sec): 120 224 304 352 249 # data tracks: 16 16 16 16 # Mk5 tracks: 16 16 16 16 Total GBytes: 681 1246 984 950 965 Total GB(M5): 605 1108 875 844 858 # of tapes : 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 4.0 Total GBytes (M5) recorded: 3432.5 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts| 291 161 149 601 Ai| 170 134 595 Cc| 133 464 S3| 416 Number of 2-station scans: 180 Number of 3-station scans: 22 Number of 4-station scans: 132 Total # of scans, observations: 334 1038