JADE-0907 (Japanese Dynamic Earth observation by VLBI) 2009 July 16-17 Notes prepared by tanimoto@gsi.go.jp Geographical Survey Institute, Japan Session JD0907 Start 2009-197 02:00:00 July 16 End 2009-198 01:57:01 July 17 Stations 1 Ts T TSUKUB32 2 Ai A AIRA 3 Cc C CHICHI10 4 S3 J SINTOTU3 5 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 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 Vs VERA Ishigakijima 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 S3 Ts Ai Cc S3 Ai 20 Ai 16 Cc 20 20 Cc 16 16 S3 20 0 0 S3 16 0 0 Vs 20 20 20 0 Vs 16 16 16 0 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 231 seconds Median SNR 25 at X-band 20 at S-band Number of observations 2204 observations Average scans per station 222 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/jd0907.skd for experiment JD0907 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 4.9 Min = 0.0 Max = 43.0 (Baseline Ai-S3 on 1741-038) RMS = 8.9 Total time: 1438 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Vs=VERAISGK Ts Ai Cc S3 Vs Avg % obs. time: 33 82 81 31 59 57 % cal. time: 0 0 0 0 0 0 % slew time: 9 9 8 12 12 11 % idle time: 57 8 10 56 27 32 total # scans: 258 259 243 224 222 241 # scans/hour : 11 11 10 9 9 10 Avg scan (sec): 111 274 288 120 231 204 # data tracks: 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 Total GBytes: 516 1277 1258 484 921 891 Total GB(M5): 458 1135 1118 430 819 792 # of tapes : 1.0 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 5.0 Total GBytes (M5) recorded: 3959.9 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 Vs StnTotal ----------------------------------- Ts| 246 238 224 209 917 Ai| 235 218 222 921 Cc| 214 209 896 S3| 189 845 Vs| 829 Number of 2-station scans: 25 Number of 3-station scans: 15 Number of 4-station scans: 44 Number of 5-station scans: 187 Total # of scans, observations: 271 2204