SYOWA-ANT17 (Syowa Antarctic VLBI experiment) 2001 Apr. 23 Notes prepared by Yoshihiro FUKUZAKI Geographical Survey Institute Schedule name: syw017.skd on CDDISA SUBNET Hh Ho Sy station key codes: Hh=HARTRAO Ho=HOBART26 Sy=SYOWA Nominal Start: 08:00 U.T. on Apr. 23 (day 113) name yyddd-hhmmss Hh Ho Sy 0537-441 01113-080000| 150 100 150 | Duration: 24 hours Nominal Stop: 08:00 U.T. on Apr. 24 (day 114) name yyddd-hhmmss Hh Ho Sy 0454-234 01114-075100| 270 130 270 | 1958-179 01114-080200| 260 260 | Correlator: Mitaka (or Tsukuba) 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 and iwano@syowa.nipr.ac.jp. 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 syw017.skd for experiment SYW017 (all scans with at least one subnet station) SOURCE |0 3 6 9 12 15 18 21 | #SCANS #OBS #Obs/bl Calculating rise/set times for source 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38... done. 0003-066I R S x x x x x I 5 5 3.5 0048-097I R x S x x x I 4 6 4.2 0104-408I x x R x x S x x x x x x I 10 14 8.1 0119+041I R S I 0 0 .0 0208-512Ix x x x R x x x x x x xS x x x x x x x I 18 32 17.4 0229+131IS I 0 0 .0 CTA26 I R xS x x I 3 5 3.7 0402-362I x x x x R x x x S x I 8 12 6.9 0454-234I x x x x x x x xR x x x Sx x x x x x x I 18 24 15.1 0458-020I R S x x I 2 2 1.4 0528+134IS x x x x x x I 6 6 4.8 0537-441I Rx S I 1 3 1.8 0637-752Ix x x x R x x x x x S x I 10 20 10.2 0727-115I x Rx x x xS x x x I 8 16 11.3 0823+033I R S x x x x x I 6 6 4.5 0920-397I R x S I 1 1 .7 1034-293I x x x x x Rx x xS x x xI 11 17 10.4 1057-797I S x R x x I 3 7 3.7 1104-445I x x x x R S x I 5 5 2.7 1124-186I x R x S I 2 4 2.6 1144-379I x R S x x I 3 3 2.0 1219+044I R x x S I 2 2 1.5 1255-316I x x R x x S x I 5 9 5.5 1334-127I x x x R S x x x x xI 8 8 5.5 1351-018I R S I 0 0 .0 1424-418I x x x x x R x x x xS I 9 17 9.6 1606+106IS x x x x x x I 6 8 6.3 1610-771I x S R I 1 3 1.7 1741-038Ix x x x x x Rx x x x Sx I 11 19 14.0 1749+096I R S I 0 0 .0 1815-553I x x x x S x x x x R I 8 8 4.0 1921-293Ix S x x x x x x x x x R I 10 12 7.3 1954-388I x S x x x x R I 5 7 4.0 1958-179I x x S x x x x x x x x x x x xR x x I 16 24 15.6 2121+053I R S I 0 0 .0 2128-123I x S x R I 2 2 1.4 2145+067I R xS x x x I 4 6 4.6 2255-282I R S I 0 0 .0 Total scans, obs: 211 313 Average number of obs. per baseline per source (normalized by up-time) = 5.2 Min = .0 Max = 24.4 (Baseline HH-Sy on 1958-179) RMS = 5.6 Total time: 1446 minutes ( 24.1 hours). Key: HH=HARTRAO HO=HOBART26 Sy=SYOWA HH HO Sy Avg % obs. time: 47 39 69 52 % cal. time: 1 1 2 1 % slew time: 28 18 5 17 % idle time: 22 40 22 28 # of tapes : 4.0 4.0 4.0 total # scans: 143 131 199 157 # scans/hour : 5 5 8 6.6 Avg scan (sec): 291 262 303 285 # OF OBSERVATIONS BY BASELINE | HH HO Sy StnTotal -------------------------- HH|143 63 131 194 HO| 131 119 182 Sy| 199 250 Number of 2-station scans: 160 Number of 3-station scans: 51 Total # of scans, observations: 211 313 Average baseline components for all observations Average XY = 5508. Average XZ = 6023. Average YZ = 2466. Average length = 6125.