SYOWA-ANT23 (Syowa Antarctic VLBI experiment) 2002 Aug. 12 Notes prepared by Yoshihiro FUKUZAKI Geographical Survey Institute, Japan Schedule name: syw023.skd on CDDISA SUBNET Hh Ho Sy station key codes: Hh=HARTRAO Ho=HOBART26 Sy=SYOWA Nominal Start: 08:00 U.T. on Aug. 12 (day 224) name yyddd-hhmmss Hh Ho Sy 1057-797 02224-080000| 230 200 230 | Duration: 24 hours Nominal Stop: 08:00 U.T. on Aug. 13 (day 225) name yyddd-hhmmss Hh Ho Sy 0637-752 02225-080300| 90 90 90 | 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 32 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 syw023.skd for experiment SYW023 (all scans with at least one subnet station) SOURCE |0 3 6 9 12 15 18 21 | #SCANS #OBS #Obs/bl 0003-066I x x R x x x S I 5 11 8.0 0048-097I xx x xR S I 4 4 2.9 0104-408I S x x x x x x x x x R I 9 9 4.5 0119+041Ix x x x R S I 4 4 3.0 0208-512I x x x xS x x x x x x x x x x x x x Rx x x I 20 34 18.4 0229+131IS x I 1 1 .8 CTA26 I S x x R I 2 2 1.4 0402-362I x x x x S x x Rx xI 8 16 9.8 0454-234I x x x Sx x x x x x x x x RI 12 18 11.7 0458-020IR S x I 1 1 .7 0528+134IS x x I 2 2 1.6 0537-441I R S x x x I 3 3 2.0 0637-752I R x x x x x S x x x x x I 10 20 10.2 0727-115I R S x x x x I 4 4 2.7 0823+033I R x S x x x x I 6 10 7.6 0920-397I R S I 0 0 .0 1034-293I R x xS x x x x x x x x I 10 14 8.8 1057-797I R x x S I 2 6 3.4 1104-445I x R S x I 2 2 .9 1124-186I x R x S x x I 4 6 3.9 1144-379I x R S x x I 3 3 1.9 1219+044I Rx xS I 2 2 1.5 1255-316I x x R S I 2 2 1.0 1334-127I x x R x x Sx x x x x x I 10 14 9.8 1351-018I R S I 0 0 .0 1424-418Ix x xR x x x x x S x I 9 19 11.2 1606+106IS x x x x x x I 6 6 4.7 1610-771I R x S I 1 3 1.7 1741-038I x Rx Sx x x x x x x x x x I 12 12 8.7 1749+096I R S I 0 0 .0 1815-553I S R x x x x x I 5 5 3.4 1921-293I x x x x x x x xR x x x x S x I 13 21 12.7 1954-388I R S I 0 0 .0 1958-179I x x x Rx x x x S x x I 9 17 11.0 2121+053I R S I 0 0 .0 2128-123I R S I 0 0 .0 2145+067Ix x Rx S I 3 5 3.8 2255-282I x R S I 1 1 .5 Total scans, obs: 185 277 Average number of obs. per baseline per source (normalized by up-time) = 4.6 Min = .0 Max = 21.3 (Baseline HH-Sy on 1741-038) RMS = 5.6 Total time: 1444 minutes ( 24.1 hours). Key: HH=HARTRAO HO=HOBART26 Sy=SYOWA HH HO Sy Avg % obs. time: 52 38 71 54 % cal. time: 1 1 2 1 % slew time: 25 15 4 15 % idle time: 20 45 22 29 # of tapes : 4.0 4.0 4.0 total # scans: 129 113 174 138 # scans/hour : 5 4 7 5.8 Avg scan (sec): 353 292 354 333 # OF OBSERVATIONS BY BASELINE | HH HO Sy StnTotal -------------------------- HH|129 57 118 175 HO| 113 102 159 Sy| 174 220 Number of 2-station scans: 139 Number of 3-station scans: 46 Total # of scans, observations: 185 277 Average baseline components for all observations Average XY = 5505. Average XZ = 6028. Average YZ = 2475. Average length = 6129.