JADE-0711 (Japanese Dynamic Earth observation by VLBI) 2007 November 08-09 Notes prepared by machida@gsi.go.jp Geographical Survey Institute, Japan Session JD0711 Start 2007-312 02:00:00 November 08 End 2007-313 01:56:39 November 09 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 2007 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 machida@gsi.go.jp using sked. Schedule setup parameters: Early start 0 sec Corr. tape sync time 0 sec Minimum scan length 40 sec Maximum scan length 400 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 30% of ranked scans for selection, consider the last 4 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 234 seconds Median SNR 25 at X-band 20 at S-band Number of observations 3174 observations Average scans per station 236 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 2229.99 1600.0 10 s 2234.99 1600.0 11 s 2249.99 1600.0 12 s 2279.99 1600.0 13 s 2309.99 1600.0 14 s 2319.99 1600.0 15 s 2334.99 1600.0 16 s 2344.99 1600.0 APPENDIX ======== SKED Summary from file /home/sked/skd_files/jd0711.skd for experiment JD0711 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 16.0 Min = .0 Max = 37.4 (Baseline Ts-Vs on 0454-234) RMS = 12.1 Total time: 1437 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: 33 72 72 31 64 61 55 % cal. time: 2 2 2 2 2 2 2 % slew time: 12 8 7 19 11 11 11 % idle time: 51 16 16 47 21 24 29 total # scans: 249 247 240 202 236 224 233 # scans/hour : 10 10 10 8 9 9 9.7 Avg scan (sec): 116 254 260 133 234 236 205 Total GBytes: 521 1132 1123 483 995 951 868 Total GB(M5): 463 1006 998 429 885 845 772 # 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: 4629.5 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 Vm Vs StnTotal -------------------------------------- Ts|249 233 234 201 234 210 1112 Ai| 247 232 194 220 224 1103 Cc| 240 192 220 210 1088 S3| 202 200 172 959 Vm| 236 198 1072 Vs| 224 1014 Number of 2-station scans: 17 Number of 3-station scans: 14 Number of 4-station scans: 15 Number of 5-station scans: 52 Number of 6-station scans: 167 Total # of scans, observations: 265 3174