JADE-0206 (Japanese Dynamic Earth observation by VLBI) 2002 Oct. 23-24 Notes prepared by Shinobu Kurihara Geographical Survey Institute, Japan Nominal Start: 05:00 U.T. on Oct.23 (day 296) Source Start DURATIONS name yyddd-hhmmss Ts Ai Cc S3 4C39.25 02296-050000| 70 70| Nominal Stop : 04:56 U.T. on Oct.24 (day 297) Source Start DURATIONS name yyddd-hhmmss Ts Ai Cc S3 1308+326 02297-045110| 260 260| 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 via 6 times sessions a year. NETWORK ======= The standard configuration of the JADE projests consists of four stations. Shintotsukawa cannot participate winter season session. 1 letter 2 letter Station: Code Code # of tapes # of obs Tsukuba T Ts 12 (K4) 286 Shintotsukawa J S3 12 (K4) 286 SCHEDULE ======== This schedule was made by S. Kurihara using sked. Schedule setup parameters: Early start 30 sec Minimum scan length 70 sec Maximum scan length 764 sec Minimum SNR 20 at X-band (margin 3) 15 at S-band (margin 3) 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 20% 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 217 seconds Median SNR 25.0 at X-band 20.0 at S-band Number of observations 784 observations Average scans per station 286 scans FREQUENCY SEQUENCE ================== Name Code K4-16SX K4 Recording mode setup for: TSUKUB32 SINTOTU3 Mode Tot.Rate Tot.BandW #chan #bits Barrel C 128.000 Mbits 64.000 MHz 16 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 0(*0) 0 211.90 mm/s X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 115.0 MHz rms spanned bw= 42.8 MHz Effective number of channels recorded per sub-pass X S Total 8.000 8.000 16.000 1 X 8209.99 MHz 2 X 8219.99 MHz 3 X 8249.99 MHz 4 X 8309.99 MHz 5 X 8419.99 MHz 6 X 8499.99 MHz 7 X 8549.99 MHz 8 X 8569.99 MHz 9 S 2219.99 MHz 10 S 2224.99 MHz 11 S 2239.99 MHz 12 S 2269.99 MHz 13 S 2299.99 MHz 14 S 2309.99 MHz 15 S 2324.99 MHz 16 S 2334.99 MHz APPENDIX ======== Average number of obs. per baseline per source (normalized by up-time) = 5.0 Min = .0 Max = 26.7 (Baseline Ts-S3 on 1741-038) RMS = 7.6 Total time: 1435 minutes ( 23.9 hours). Key: Ts=TSUKUB32 S3=SINTOTU3 Ts S3 Avg % obs. time: 72 72 72 % cal. time: 3 3 3 % slew time: 11 21 16 % idle time: 12 3 7 total # scans: 286 286 286 # scans/hour : 11 11 11.9 Avg scan (sec): 217 217 217 Total GBytes: 1275 1275 1275 # of tapes : 12.0 12.0 tape change times (hhmm): 0704 0704 0907 0907 1105 1105 1306 1306 1505 1505 1705 1705 1906 1906 2107 2107 2307 2307 0102 0102 0258 0258 # OF OBSERVATIONS BY BASELINE | Ts S3 StnTotal ---------------------- Ts|286 286 286 S3| 286 286 Number of 2-station scans: 286 Total # of scans, observations: 286 286