SYOWA-ANT22 (Syowa Antarctic VLBI experiment) 2002 Apr. 29 Notes prepared by Yoshihiro FUKUZAKI Geographical Survey Institute Schedule name: syw022.skd on CDDISA SUBNET Hh Ho Sy station key codes: Hh=HARTRAO Ho=HOBART26 Sy=SYOWA Nominal Start: 08:00 U.T. on Apr. 29 (day 119) name yyddd-hhmmss Hh Ho Sy 0104-408 02119-080000| 130 100 130 | Duration: 24 hours Nominal Stop: 08:00 U.T. on Apr. 30 (day 120) name yyddd-hhmmss Hh Ho Sy 0454-234 02120-080200| 290 140 290 | 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.' ----------------------------------------------------------- Summary ======= SKED Summary from file syw022.skd for experiment SYW022 (all scans with at least one subnet station) SOURCE |0 3 6 9 12 15 18 21 | #SCANS #OBS #Obs/bl 0003-066I xR Sx x x x x x I 7 7 5.0 0048-097I R S I 0 0 .0 0104-408I R x S x x x x x I 6 8 4.8 0119+041I R S x x x I 3 3 2.3 0208-512I x x x Rx x x x x x x S x x x x x x x x x x I 20 32 16.8 0229+131IS I 0 0 .0 CTA26 I R S x x x I 3 3 2.2 0402-362I x x x R S I 3 3 1.5 0454-234I x x x x x x Rx x x x x xS x x x x x x x x I 20 32 20.4 0458-020I R S x I 1 1 .7 0528+134IS x x x x I 4 4 3.2 0537-441I x R x x S I 4 8 4.5 0637-752Ix x R x x x x Sx x I 8 16 8.1 0727-115I x Rx x xS x x x x x x I 10 16 11.2 0823+033I R x x S x x x x x I 7 11 8.3 0920-397I Rx S I 1 1 .7 1034-293I x x x x R x x x S x x x x I 12 18 11.0 1057-797IxS x R x x I 4 10 5.4 1104-445I x x x R S x xI 5 5 2.7 1124-186I xR x x S I 3 7 4.5 1144-379Ix x x R x x xS I 6 12 7.4 1219+044I R S I 0 0 .0 1255-316I x x R x S x I 4 6 3.6 1334-127I x x R Sx x I 4 4 2.8 1351-018I R S I 0 0 .0 1424-418I x R S I 1 1 .5 1606+106IS x x x x x I 5 7 5.5 1610-771I x S x R I 2 4 2.0 1741-038I x x x x x x R x x x S I 9 15 11.0 1749+096I R S x I 1 1 .8 1815-553I x x x x x S x x x R I 8 8 4.4 1921-293I x x S x x x x x x R I 9 13 7.9 1954-388I S x x x x x x x x x xR x x I 12 16 9.1 1958-179I Sx x x x x x x R x x x I 10 16 10.5 2121+053I R S I 0 0 .0 2128-123I x S x x x x R I 5 5 3.5 2145+067I x R S x I 3 3 2.3 2255-282I R S I 0 0 .0 Total scans, obs: 200 296 Average number of obs. per baseline per source (normalized by up-time) = 4.9 Min = .0 Max = 28.7 (Baseline HH-Sy on 0454-234) RMS = 5.6 Total time: 1447 minutes ( 24.1 hours). Key: HH=HARTRAO HO=HOBART26 Sy=SYOWA HH HO Sy Avg % obs. time: 48 39 71 53 % cal. time: 1 1 2 1 % slew time: 25 17 5 16 % idle time: 23 42 21 28 # of tapes : 4.0 4.0 4.0 total # scans: 136 122 190 149 # scans/hour : 5 5 7 6.2 Avg scan (sec): 312 280 325 305 # OF OBSERVATIONS BY BASELINE | HH HO Sy StnTotal -------------------------- HH|136 58 126 184 HO| 122 112 170 Sy| 190 238 Number of 2-station scans: 152 Number of 3-station scans: 48 Total # of scans, observations: 200 296 Average baseline components for all observations Average XY = 5474. Average XZ = 5996. Average YZ = 2478. Average length = 6099.