SYOWA-ANT25 (Syowa Antarctic VLBI experiment) 2003 Jan. 16 Notes prepared by Yoshihiro FUKUZAKI Geographical Survey Institute, Japan Schedule name: syw025.skd on CDDISA SUBNET Hh Ho Sy station key codes: Hh=HARTRAO Ho=HOBART26 Sy=SYOWA Nominal Start: 08:00 U.T. on Jan. 16 (day 016) name yyddd-hhmmss Hh Ho Sy 1610-771 03016-080000| 90 90 90 | Duration: 24 hours Nominal Stop: 08:00 U.T. on Jan. 17 (day 017) name yyddd-hhmmss Hh Ho Sy 1815-553 03017-074000| 750 750 | 1144-379 03017-075800| 200 200 | 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 31 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 syw025.skd for experiment SYW025 (all scans with at least one subnet station) SOURCE |0 3 6 9 12 15 18 21 | #SCANS #OBS #Obs/bl 0003-066I x R x S x x I 4 6 4.4 0048-097I x R x S I 2 4 2.9 0104-408I x x Rx x x S x x I 8 14 8.5 0119+041I R S x x I 2 2 1.5 0208-512I x x x x x x x x R x x x x x S x x x x xI 18 28 14.9 0229+131IS x x x I 3 3 2.4 CTA26 I R x S x x x x x x x x I 9 11 8.0 0402-362I x x x x x x x R x S I 8 8 4.2 0454-234I x x x x x x R x x x x x S x x x x x x xI 19 27 17.3 0458-020I xR S x I 2 2 1.5 0528+134IS x x x I 3 3 2.4 0537-441I x x x x x x R S I 6 6 2.7 0637-752I S x x x Rx x x I 6 12 6.1 0727-115I x x x x x R x S x I 8 12 8.5 0823+033I x x R S I 3 3 2.2 0920-397IS x R I 1 1 .5 1034-293I S x xx x x x x x x x x R x x I 14 18 10.9 1057-797I x x S R x I 3 9 5.1 1104-445I S R I 0 0 .0 1124-186I S x x x x x x x x R I 9 9 5.8 1144-379I S x x x x R x I 5 7 4.0 1219+044I R S I 0 0 .0 1255-316Ix xS x x R x x I 6 14 8.7 1334-127I x Sx x x x R x I 6 10 6.9 1351-018I S R I 0 0 .0 1424-418I x x S x x x x x x R I 8 12 7.1 1606+106I R S x x x I 4 6 4.7 1610-771I R x x S x x I 4 8 4.1 1741-038I x R x S x x x I 6 10 7.4 1749+096I R S I 0 0 .0 1815-553I R x x x x S x x x I 7 7 3.7 1921-293I R S I 0 0 .0 1954-388I R x x S x x x I 5 9 5.5 1958-179I R S I 0 0 .0 2121+053I R S I 0 0 .0 2128-123I R xS x x x x I 5 7 4.8 2145+067I xR x Sx x x x x I 7 9 6.9 2255-282I x x x R x x S x x I 7 7 4.4 Total scans, obs: 198 284 Average number of obs. per baseline per source (normalized by up-time) = 4.7 Min = .0 Max = 28.5 (Baseline HH-Sy on 0454-234) RMS = 5.1 Total time: 1441 minutes ( 24.0 hours). Key: HH=HARTRAO HO=HOBART26 Sy=SYOWA HH HO Sy Avg % obs. time: 43 29 58 43 % cal. time: 1 1 2 1 % slew time: 25 17 5 16 % idle time: 28 51 34 38 total # scans: 132 120 187 146 # scans/hour : 5 4 7 6.1 Avg scan (sec): 287 210 269 255 Total GBytes: 908 681 1235 941 # of tapes : 4.0 4.0 4.0 tape change times (hhmm): 0800 0800 0800 1400 1400 1400 2006 2006 2006 0205 0205 0205 # OF OBSERVATIONS BY BASELINE | HH HO Sy StnTotal -------------------------- HH|132 54 121 175 HO| 120 109 163 Sy| 187 230 Number of 2-station scans: 155 Number of 3-station scans: 43 Total # of scans, observations: 198 284