SYOWA-ANT18 (Syowa Antarctic VLBI experiment) 2001 Jul. 30 Notes prepared by Yoshihiro FUKUZAKI Geographical Survey Institute Schedule name: syw018.skd on CDDISA SUBNET Hh Ho Sy station key codes: Hh=HARTRAO Ho=HOBART26 Sy=SYOWA Nominal Start: 08:00 U.T. on Jul. 30 (day 211) name yyddd-hhmmss Hh Ho Sy 1057-797 01211-080000| 210 170 210 | Duration: 24 hours Nominal Stop: 08:00 U.T. on Jul. 31 (day 212) name yyddd-hhmmss Hh Ho Sy 1124-186 01212-075900| 620 320 620 | 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 33 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 syw018.skd for experiment SYW018 (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 4.4 0048-097I x R S I 1 1 .7 0104-408I S x x x x x x x x x x R x I 11 13 7.0 0119+041I x x x x R SI 4 4 3.0 0208-512Ix x x x x S x x x x x x x x x x Rx x I 18 34 18.6 0229+131IS x x I 2 2 1.6 CTA26 I S x R I 1 1 .7 0402-362I x x x x S x x x R I 7 11 6.6 0454-234I R x x x x x x xS x x x x x x x x I 15 29 18.6 0458-020I R S I 0 0 .0 0528+134IS x x x x I 4 4 3.2 0537-441I xR x S x x I 4 6 3.6 0637-752I x R x x x x S x x x x I 9 17 8.5 0727-115I x x R S x x x x I 6 6 4.2 0823+033I R x xSx x x I 5 9 6.8 0920-397I R S I 0 0 .0 1034-293I x x R x x x S x x x x x I 11 19 11.7 1057-797I R x x S I 2 6 3.4 1104-445I x R S x x x I 4 4 2.0 1124-186I x x x R x S x x x I 8 10 6.4 1144-379I x xR S x x I 4 4 2.3 1219+044I Rx x S I 2 2 1.5 1255-316I x R S I 1 1 .5 1334-127I x R x x x Sx x x x xx x I 11 17 11.9 1351-018I R S I 0 0 .0 1424-418I x R x x x x x xS I 7 19 11.4 1606+106I RxS x x x x x I 6 8 6.3 1610-771I R x S I 1 3 1.7 1741-038I x R x x Sx x x x x x x x x x I 13 17 12.4 1749+096I R S I 0 0 .0 1815-553I S x x R x x x x x xI 8 8 4.7 1921-293I x x x x x x x x x Rx x x x S x I 14 22 13.3 1954-388I x R x S x I 3 5 3.0 1958-179I x xR x S x x I 5 7 4.5 2121+053I R S I 0 0 .0 2128-123I R x x S I 2 2 1.4 2145+067I x Rx S x I 3 3 2.3 2255-282I x R SI 1 1 .5 Total scans, obs: 197 301 Average number of obs. per baseline per source (normalized by up-time) = 5.0 Min = .0 Max = 25.6 (Baseline HH-Sy on 1741-038) RMS = 5.8 Total time: 1449 minutes ( 24.2 hours). Key: HH=HARTRAO HO=HOBART26 Sy=SYOWA HH HO Sy Avg % obs. time: 50 40 69 53 % cal. time: 1 1 2 1 % slew time: 27 18 4 16 % idle time: 20 39 23 27 # of tapes : 4.0 4.0 4.0 total # scans: 136 129 181 148 # scans/hour : 5 5 7 6.2 Avg scan (sec): 321 276 334 310 # OF OBSERVATIONS BY BASELINE | HH HO Sy StnTotal -------------------------- HH|136 68 120 188 HO| 129 113 181 Sy| 181 233 Number of 2-station scans: 145 Number of 3-station scans: 52 Total # of scans, observations: 197 301 Average baseline components for all observations Average XY = 5632. Average XZ = 6130. Average YZ = 2428. Average length = 6227.