JADE-0204 (Japanese Dynamic Earth observation by VLBI) 2002 Jul. 16-17 Notes prepared by Shinobu Kurihara Geographical Survey Institute, Japan Nominal Start: 04:30 U.T. on Jul.16 (day 197) Source Start DURATIONS name yyddd-hhmmss Ts Ai Cc S3 0607-157 02197-043000| 70 80 80 70| Nominal Stop : 04:34 U.T. on Jun.17 (day 198) Source Start DURATIONS name yyddd-hhmmss Ts Ai Cc S3 4C39.25 02198-043250| 70 70 70 70| 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. Station: Code Tsukuba Ts Aira Ai Chichijima Cc Shintotsukawa S3 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 10) 17 at S-band (margin 7) 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 324 seconds Median SNR 25.0 at X-band 25.0 at S-band Number of observations 794 observations Average scans per station 151 scans FREQUENCY SEQUENCE ================== Name Code JPK4-16 K4 Recording mode setup for: TSUKUB32 AIRA CHICHI10 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) 0 423.80 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) = 2.4 Min = .0 Max = 16.7 (Baseline Ts-Ai on 0454-234) RMS = 3.8 Total time: 1444 minutes ( 24.1 hours). Key: Ts=TSUKUB32 Ai=AIRA Cc=CHICHI10 S3=SINTOTU3 Ts Ai Cc S3 Avg % obs. time: 54 58 70 42 56 % cal. time: 2 1 1 1 1 % slew time: 9 4 6 15 8 % idle time: 34 35 21 41 33 # of tapes : 9.010.012.0 7.0 total # scans: 175 127 167 136 151 # scans/hour : 7 5 6 5 6.3 Avg scan (sec): 268 398 364 268 324 # OF OBSERVATIONS BY BASELINE | Ts Ai Cc S3 StnTotal ------------------------------ Ts|175 127 167 136 430 Ai| 127 119 116 362 Cc| 167 129 415 S3| 136 381 Number of 2-station scans: 29 Number of 3-station scans: 37 Number of 4-station scans: 109 Total # of scans, observations: 175 794