SYOWA-ANT12 (Syowa Antarctic VLBI experiment) 2000 Sep. 11 Notes prepared by Yoshihiro FUKUZAKI Geographical Survey Institute Schedule name: syw012.skd on CDDISA SUBNET Hh Ho Sy station key codes: Hh=HARTRAO Ho=HOBART26 Sy=SYOWA Nominal Start: 08:00 U.T. on Sep. 11 (day 255) name yyddd-hhmmss Hh Ho Sy 1057-797 00255-080000| 220 130 220 | Duration: 24 hours Nominal Stop: 08:00 U.T. on Sep. 12 (day 256) name yyddd-hhmmss Hh Ho Sy 1815-553 00256-074900| 660 660 | 0727-115 00256-080100| 150 150 | Correlator: Mitaka 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 120 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 doi@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 syw012.skd for experiment SYW012 (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 x x R x S I 4 6 4.3 0048-097I x x xR S I 3 3 2.2 0104-408I S x x x x x x xRx x x x I 11 19 10.6 0119+041Ix x Rx S I 4 4 3.0 0208-512Ix x x S x x x x x x x x x x x x R x x x x I 20 36 19.7 0229+131IS x I 1 1 .8 CTA26 I x x R x x S xI 5 9 6.6 0402-362I S x x R I 2 2 1.0 0454-234I x x xSx x x x x x x x x x Rx x I 15 25 16.1 0458-020I S x x R I 2 2 1.4 0528+134IS I 0 0 .0 0537-441I xS x x x R I 4 6 3.6 0637-752I x x x S x x x x R I 8 14 6.7 0727-115I R x S x x x I 4 6 4.2 0823+033I R x xS x x x I 5 9 6.8 0920-397I R S I 0 0 .0 1034-293I x R x xS x x x x x x I 9 13 8.1 1057-797I R x x S I 2 6 3.4 1104-445I R S x x x I 3 3 1.8 1124-186I x x x x R x x x S x I 8 12 7.6 1144-379I R S x x I 2 2 1.0 1219+044I R S I 0 0 .0 1255-316I x x R x x S x I 6 12 7.2 1334-127I x R x S x x x x x x I 9 13 9.1 1351-018I R S I 0 0 .0 1424-418I R x x x S x x I 5 11 6.6 1606+106IS x x x x x x x x x I 9 11 8.6 1610-771I R x x x S I 3 9 5.1 1741-038I x R x S x x x x x x x I 9 11 8.0 1749+096I R S I 0 0 .0 1815-553I x R x x x x x S I 6 6 3.7 1921-293I x x x x x xR x x x S x I 10 16 9.6 1954-388I x R x S x x x I 5 7 4.6 1958-179I x R S x x I 4 6 3.9 2121+053I R S I 0 0 .0 2128-123I x R x S I 2 4 2.9 2145+067I R S x x I 2 2 1.5 2255-282I x x x R S I 3 3 1.6 Total scans, obs: 185 289 Average number of obs. per baseline per source (normalized by up-time) = 4.8 Min = .0 Max = 24.4 (Baseline HH-Sy on 0454-234) RMS = 5.2 Total time: 1443 minutes ( 24.1 hours). Key: HH=HARTRAO HO=HOBART26 Sy=SYOWA HH HO Sy Avg % obs. time: 53 38 72 54 % cal. time: 1 1 2 1 % slew time: 27 17 4 16 % idle time: 18 42 20 27 # of tapes : 4.0 4.0 4.0 total # scans: 127 117 178 140 # scans/hour : 5 4 7 5.9 Avg scan (sec): 363 287 352 334 # OF OBSERVATIONS BY BASELINE | HH HO Sy StnTotal -------------------------- HH|127 59 120 179 HO| 117 110 169 Sy| 178 230 Number of 2-station scans: 133 Number of 3-station scans: 52 Total # of scans, observations: 185 289 Average baseline components for all observations Average XY = 5525. Average XZ = 6037. Average YZ = 2460. Average length = 6138.