SYOWA-ANT14 (Syowa Antarctic VLBI experiment) 2000 Nov. 20 Notes prepared by Yoshihiro FUKUZAKI Geographical Survey Institute Schedule name: syw014.skd on CDDISA SUBNET Hh Ho Sy station key codes: Hh=HARTRAO Ho=HOBART26 Sy=SYOWA Nominal Start: 08:00 U.T. on Nov. 20 (day 325) name yyddd-hhmmss Hh Ho Sy 1057-797 00325-080000| 160 120 160 | Duration: 24 hours Nominal Stop: 08:00 U.T. on Nov. 20 (day 326) name yyddd-hhmmss Hh Ho Sy 1424-418 00326-075500| 120 120 120 | 0537-441 00326-080000| 120 120 | 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 35 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 syw014.skd for experiment SYW014 (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 x x xS x x I 6 14 10.2 0048-097I x R S x x x x x x I 7 7 4.8 0104-408I x x x x R x x x x S x x I 10 18 10.6 0119+041I R x S x x x x I 5 5 3.8 0208-512I x x xx x x x x x x x x x R x x x x x x S x xI 23 37 20.2 0229+131IS x x x x I 4 4 3.2 CTA26 I R S x x I 2 2 1.4 0402-362I x x x x x x x x R x S x I 10 12 6.9 0454-234I x x x x x x x x x x x x x Rx x x S I 16 22 13.8 0458-020I x x R S I 2 2 1.5 0528+134IS x I 1 1 .8 0537-441I S x x x x x x R I 6 6 3.4 0637-752I x x S x x x x R x x x x I 11 23 11.8 0727-115I x x x x x x R x S I 7 9 6.3 0823+033I x x R x S I 3 5 3.8 0920-397I S x x x R I 3 3 1.6 1034-293Ix x S x x x x x x x x x x x xR x I 15 21 12.5 1057-797I x x S R I 2 6 3.4 1104-445I S x x R I 2 2 1.1 1124-186I S x x x x x R I 5 5 3.3 1144-379IR x x xS x x x I 6 12 7.4 1219+044I R x S I 1 1 .8 1255-316I R x x xS x x I 5 11 6.7 1334-127I R x x x x S x x x x x xI 11 19 13.3 1351-018I R S I 0 0 .0 1424-418I R x xS x x x x x x I 9 13 7.3 1606+106I R S x x x x I 5 5 3.9 1610-771I R x S x I 2 4 2.0 1741-038I Rx x S x x x x x x x x I 10 12 8.7 1749+096IS x I 1 1 .8 1815-553Ix x x R x x x x S I 7 7 3.7 1921-293I x x R x x x x Sx x x x x x x x x I 15 23 14.5 1954-388I x R x x S I 3 7 4.2 1958-179I x x x x R x x x S x x x x x I 13 21 13.7 2121+053I R S I 0 0 .0 2128-123I x x R S I 2 2 1.5 2145+067I x R xSx x x x x I 7 9 6.9 2255-282I R S I 0 0 .0 Total scans, obs: 237 351 Average number of obs. per baseline per source (normalized by up-time) = 5.8 Min = .0 Max = 24.4 (Baseline HH-Sy on 0208-512) RMS = 6.0 Total time: 1442 minutes ( 24.0 hours). Key: HH=HARTRAO HO=HOBART26 Sy=SYOWA HH HO Sy Avg % obs. time: 46 39 68 51 % cal. time: 1 1 2 2 % slew time: 29 19 5 18 % idle time: 22 39 23 28 # of tapes : 4.0 4.0 4.0 total # scans: 160 142 229 177 # scans/hour : 6 5 9 7.4 Avg scan (sec): 249 239 257 248 # OF OBSERVATIONS BY BASELINE | HH HO Sy StnTotal -------------------------- HH|160 65 152 217 HO| 142 134 199 Sy| 229 286 Number of 2-station scans: 180 Number of 3-station scans: 57 Total # of scans, observations: 237 351 Average baseline components for all observations Average XY = 5423. Average XZ = 5952. Average YZ = 2493. Average length = 6055.