SYOWA-ANT28 (Syowa Antarctic VLBI experiment) 2003 Nov. 26 Notes prepared by Yoshihiro FUKUZAKI Geographical Survey Institute, Japan Schedule name: syw028.skd on CDDISA SUBNET Hh Ho Sy station key codes: Hh=HARTRAO Ho=HOBART26 Sy=SYOWA Nominal Start: 08:00 U.T. on Nov. 26 (day 330) name yyddd-hhmmss Hh Ho Sy 1741-038 03330-080000| 90 90 90| Duration: 24 hours Nominal Stop: 08:00 U.T. on Nov. 27 (day 331) name yyddd-hhmmss Hh Ho Sy 1749+096 03331-075300| 260 280 280| 1144-379 03331-080200| 490 490| 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 syw028.skd for experiment SYW028 (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 x x I 7 9 6.6 0048-097I R S I 0 0 .0 0104-408I x x x xR x x x x S I 8 10 5.8 0119+115IS x x I 2 2 1.6 0119+041I R S I 0 0 .0 0208-512Ix x x x x x x x x x R x x x x x S x x I 17 27 14.7 0229+131IS x x x I 3 3 2.4 CTA26 I R x S x x xI 4 6 4.4 0402-362I R x x S I 2 2 1.4 0454-234I x x x x x x x x x x R x x x x x x Sx x x xI 21 33 21.0 0458-020I R S I 0 0 .0 0528+134IS x x x I 3 3 2.4 0537-441IxS x x x x x x x x x R x I 11 15 8.6 0637-752I x x S R I 2 2 1.4 0727-115I x x x x xx x x x xR x S x I 14 16 11.2 0823+033I R x S I 2 2 1.5 0920-397I S R I 1 1 .7 1034-293I S R I 0 0 .0 1057-797I x x x S x x R I 5 5 2.7 1104-445I S R I 0 0 .0 1124-186I S x x x x Rx I 5 7 4.6 1144-379I x xSx x x x x x x x x x x R I 13 15 9.0 1219+044I R S I 0 0 .0 1255-316I R x x x x S I 4 4 2.7 1334-127I R x x S x x x x I 6 10 7.0 1351-018I R S I 0 0 .0 1424-418I R S I 0 0 .0 1606+106IS x x x x I 4 4 3.1 1610-771I x R x x x Sx x x I 7 7 3.4 1741-038I x Rx xS x x x x x x I 9 13 9.6 1749+096I R S x I 2 4 3.1 1815-553I x x x x R x x x x S I 8 8 4.1 1921-293I x x x x x R x x x Sx x x x x xI 14 18 10.6 1954-388I x R x x S x I 4 4 2.3 1958-179I R x x S I 2 2 1.4 2005-489I x x R x x S I 5 9 5.1 2052-474I R S I 0 0 .0 2121+053I Rx Sx x x I 4 4 3.1 2128-123I R xS x I 2 2 1.4 2145+067I R S x I 1 1 .8 2255-282I R S I 0 0 .0 Total scans, obs: 192 248 Average number of obs. per baseline per source (normalized by up-time) = 3.8 Min = .0 Max = 28.5 (Baseline HH-Sy on 0454-234) RMS = 5.4 Total time: 1450 minutes ( 24.2 hours). Key: HH=HARTRAO HO=HOBART26 Sy=SYOWA HH HO Sy Avg % obs. time: 45 47 56 49 % cal. time: 1 1 1 1 % slew time: 25 18 4 15 % idle time: 28 32 37 32 # of tapes : 4.0 4.0 4.0 total # scans: 131 123 158 137 # scans/hour : 5 5 6 5.7 Avg scan (sec): 298 337 308 314 # OF OBSERVATIONS BY BASELINE | HH HO Sy StnTotal -------------------------- HH|131 62 97 159 HO| 123 89 151 Sy| 158 186 Number of 2-station scans: 164 Number of 3-station scans: 28 Total # of scans, observations: 192 248 Average baseline components for all observations Average XY = 5727. Average XZ = 6217. Average YZ = 2407. Average length = 6313.