JADE-0605 (Japanese Dynamic Earth observation by VLBI) 2006 May 25-26 Notes prepared by fujisaku@gsi.go.jp Geographical Survey Institute, Japan Session JD0605 Start 2006-145 02:00:00 May 25 End 2006-146 01:54:47 May 26 Stations 4 Ts TSUKUB32 T Ai AIRA A Cc CHICHI10 C S3 SINTOSU3 J 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 2006 fiscal year, JADE session will be carried out once a month. NETWORK ======= The standard configuration of the JADE projests consists of four stations. Station: Code Tsukuba Ts Aira Ai Chichijima Cc Shintotsukawa S3 SCHEDULE ======== This schedule was made by fujisaku@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 784 sec Minimum SNR by baseline for multi-baseline scans X-band (margin 8) S-band (margin 8) Ts Ai Cc Ts Ai Cc Ai 18 Ai 16 Cc 18 16 Cc 16 15 S3 18 0 0 S3 16 0 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 30% of ranked scans for selection, consider the last 4 hour of scans for sky coverage calculations, minimum 30 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 273 seconds Median SNR 20 at X-band 20 at S-band Number of observations 1116 observations Average scans per station 198 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/jd0605.skd for experiment JD0605 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 12.9 Min = 1.7 Max = 29.3 (Baseline Ts-Cc on 1334-127) RMS = 8.2 Total time: 1436 minutes ( 23.9 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 46 80 80 44 62 % cal. time: 2 2 2 2 2 % slew time: 9 5 5 17 9 % idle time: 41 11 11 35 25 total # scans: 213 197 194 191 198 # scans/hour : 8 8 8 7 8.3 Avg scan (sec): 186 351 356 202 273 Total GBytes: 714 1247 1243 695 975 Total GB(M5): 634 1109 1105 618 867 # of tapes : 1.0 1.0 1.0 1.0 tape change times (hhmm): Total number of tapes: 4.0 Total GBytes (M5) recorded: 3467.8 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|213 196 193 191 580 Ai| 197 185 179 560 Cc| 194 172 550 S3| 191 542 Number of 2-station scans: 15 Number of 3-station scans: 31 Number of 4-station scans: 168 Total # of scans, observations: 214 1116