JADE-1006 (Japanese Dynamic Earth observation by VLBI) 2010 June 22-23 Notes prepared by tanimoto@gsi.go.jp Geographical Survey Institute, Japan Session JD1006 Start 2010-173 17:30:00 June 22 End 2010-174 17:28:19 June 23 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 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 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 225 seconds Median SNR 25 at X-band 25 at S-band Number of observations 1069 observations Average scans per station 267 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/jd1006.skd for experiment JD1006 (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 = 52.6 (Baseline Ts-Ai on 1034-293) RMS = 9.3 Total time: 1439 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 48 76 59 61 61 % cal. time: 0 0 0 0 0 % slew time: 15 14 7 10 12 % idle time: 36 8 33 28 27 total # scans: 367 358 188 157 267 # scans/hour : 15 15 8 7 11 Avg scan (sec): 113 184 272 335 225 # data tracks: 16 16 16 16 # Mk5 tracks: 16 16 16 16 Total GBytes: 748 1189 920 946 950 Total GB(M5): 665 1057 817 841 845 # of tapes : 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 4.0 Total GBytes (M5) recorded: 3379.1 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts| 332 161 146 639 Ai| 166 132 630 Cc| 132 459 S3| 410 Number of 2-station scans: 253 Number of 3-station scans: 20 Number of 4-station scans: 126 Total # of scans, observations: 399 1069