JADE-0811 (Japanese Dynamic Earth observation by VLBI) 2008 NOV 13-14 Notes prepared by kokado@gsi.go.jp Geographical Survey Institute, Japan Session JD0811 Start 2008-318 02:00:00 NOV 13 End 2008-319 01:56:23 NOV 14 Stations 1 Ts T TSUKUB32 2 Ai A AIRA 3 Cc C CHICHI10 4 S3 J SINTOTU3 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 2008 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 Vm VERA Mizusawa Vs VERA Ishigakijima SCHEDULE ======== This schedule was made by kokado@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 8) S-band (margin 8) Ts Ai Cc S3 Vm Ts Ai Cc S3 Vm Ai 18 Ai 16 Cc 18 16 Cc 16 15 S3 18 0 0 S3 16 0 0 Vm 18 18 18 0 Vm 16 16 16 0 Vs 18 18 18 0 18 Vs 16 16 16 0 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 146 seconds Median SNR 30 at X-band 20 at S-band Number of observations 4812 observations Average scans per station 360 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/jd0811.skd for experiment JD0811 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 15.7 Min = 0.0 Max = 40.0 (Baseline Ai-Cc on 0537-441) RMS = 11.3 Total time: 1439 minutes ( 24.0 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Vm=VERAMZSW Vs=VERAISGK Ts Ai Cc S3 Vm Vs Avg % obs. time: 28 62 67 27 61 58 51 % cal. time: 0 0 0 0 0 0 0 % slew time: 18 11 11 32 19 17 19 % idle time: 53 25 21 40 19 24 31 total # scans: 371 348 344 320 360 321 344 # scans/hour : 15 15 14 13 15 13 14 Avg scan (sec): 65 154 169 72 146 156 126 # data tracks: 32 32 32 32 32 32 # Mk5 tracks: 32 32 32 32 32 32 Total GBytes: 871 1933 2094 830 1895 1799 1570 Total GB(M5): 774 1719 1861 738 1685 1599 1396 # 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: 8375.3 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 Vm Vs StnTotal ---------------------------------------- Ts| 338 337 320 359 311 1665 Ai| 335 312 331 320 1636 Cc| 304 325 314 1615 S3| 317 285 1538 Vm| 304 1636 Vs| 1534 Number of 2-station scans: 26 Number of 3-station scans: 18 Number of 4-station scans: 12 Number of 5-station scans: 46 Number of 6-station scans: 280 Total # of scans, observations: 382 4812