SYOWA-ANT24 (Syowa Antarctic VLBI experiment) 2002 Nov. 04 Notes prepared by Yoshihiro FUKUZAKI Geographical Survey Institute, Japan Schedule name: syw024.skd on CDDISA SUBNET Hh Ho Sy station key codes: Hh=HARTRAO Ho=HOBART26 Sy=SYOWA Nominal Start: 08:00 U.T. on Nov. 04 (day 308) name yyddd-hhmmss Hh Ho Sy 1057-797 02308-080000| 150 90 150 | Duration: 24 hours Nominal Stop: 08:00 U.T. on Nov. 05 (day 309) name yyddd-hhmmss Hh Ho Sy 1057-797 02309-080300| 160 90 160 | Correlator: Mitaka (or Kashima) Purpose ======= The purpose of the SYOWA-ANT (Syowa Antarctic VLBI experiment) sessions is to strengthen reference frame in the southern hemisphere and to detect Antarctica plate motion. Schedule ======== This is a new schedule generated with the automatic mode of sked using the variable scan length with a minimum of 90 seconds. SNR goals are 20 at X-band and 15 at S-band for all stations. This schedule was optimized by different features: - observations were weighted by their expected SNRs, - 30 ps noise contribution added, - mimimum time between observations of the same radio source was set to 20 min - use of CvgONLY in order to improve the geometry of observation This schedule was made using 35 sources which helped improve the sky coverage. Procedures ========== Please generate the procedures for this session using drudg. In Syowa station, skd file is read by K4-FS directly. Please send messages of ready, start and end of experiment at your station to ivs-ops@ivscc.gsfc.nasa.gov. Please put log file onto cddisa. NO PREPASS TIME: There is no time allowed in the schedule for prepassing tapes. Therefore all tapes needed for this experiment must be pre-checked before the start of this experiment. FREQUENCY SEQUENCE: Modified standard CDP-SX (4MHz) frequency sequence is used for all SYOWA-ANT experiments. The frequency sequence of S band is changed to avoid interference in Hobart. Please verify that the frequency of BBC is correct. THIS SCHEDULE HAS A 150 SECOND EARLY TAPE START ----------------------------------------------- THE CABLE CONNECTION BETWEEN BBC AND SAMPLER IS 'PARALLEL.' ----------------------------------------------------------- SKED Summary from file syw024.skd for experiment SYW024 (all scans with at least one subnet station) SOURCE |0 3 6 9 12 15 18 21 | #SCANS #OBS #Obs/bl 0003-066I R x S I 2 4 3.0 0048-097I x R S x x xI 5 7 4.9 0104-408I x x x x x R x x x x S I 9 17 9.7 0119+041I Rx xS x x x x x I 7 7 5.3 0208-512I x x x x x x x x x x x x x x x x xR x x x x x x x xS I 25 41 22.0 0229+131IS I 0 0 .0 CTA26 I R S x I 1 1 .7 0402-362I x x x x R x x S I 6 8 4.5 0454-234Ix x x x x x x x x x x x Rx x S I 15 21 13.4 0458-020I R x S I 1 3 2.2 0528+134IS x x x x x xI 6 6 4.8 0537-441I S x x x x x x x R x I 8 10 5.9 0637-752I x x xS x x x x Rx x x I 10 22 11.5 0727-115Ix x x x x x x x x x x x R x SI 14 18 12.5 0823+033I S x x x x R x I 5 7 5.2 0920-397I S x x R I 2 2 1.2 1034-293I x x x S x x x x x x x x x x x RI 14 20 11.8 1057-797I R x x x xS I 5 15 8.5 1104-445I R x S x x I 3 3 1.6 1124-186Ix R S x x x I 4 4 2.6 1144-379I R x Sx x x x x I 6 8 4.7 1219+044I R x S I 1 1 .8 1255-316I R x S x I 2 4 2.4 1334-127I R xx S x x I 4 8 5.6 1351-018I R S I 0 0 .0 1424-418I R x S I 2 4 2.5 1606+106I R Sx x x x x I 5 5 3.9 1610-771I R x x S I 2 6 3.4 1741-038I x R x S x x x x x x x x x x x I 13 15 10.9 1749+096IS x x I 2 2 1.6 1815-553I x x x x R x x x x S I 8 8 4.1 1921-293I x x xR x x x x Sx x x x x x x I 14 22 14.0 1954-388I x x Rx x S x x I 6 10 6.0 1958-179I x x x x R x x x x S x x x x x I 14 22 14.4 2121+053I R S I 0 0 .0 2128-123I x x R x S x I 4 6 4.3 2145+067I R x S x x I 3 5 3.8 2255-282I x x x x R S I 4 4 2.2 Total scans, obs: 232 346 Average number of obs. per baseline per source (normalized by up-time) = 5.7 Min = .0 Max = 26.5 (Baseline HH-Sy on 0727-115) RMS = 6.2 Total time: 1445 minutes ( 24.1 hours). Key: HH=HARTRAO HO=HOBART26 Sy=SYOWA HH HO Sy Avg % obs. time: 36 28 51 38 % cal. time: 1 1 2 2 % slew time: 31 20 5 19 % idle time: 31 49 40 40 total # scans: 157 141 223 173 # scans/hour : 6 5 9 7.2 Avg scan (sec): 198 175 199 190 Total GBytes: 862 723 1228 937 # of tapes : 4.0 4.0 4.0 tape change times (hhmm): 0800 0800 0800 1352 1352 1352 1958 1958 1958 0205 0205 0205 # OF OBSERVATIONS BY BASELINE | HH HO Sy StnTotal -------------------------- HH|157 66 148 214 HO| 141 132 198 Sy| 223 280 Number of 2-station scans: 175 Number of 3-station scans: 57 Total # of scans, observations: 232 346