SYOWA-ANT15 (Syowa Antarctic VLBI experiment) 2000 Dec. 07 Notes prepared by Yoshihiro FUKUZAKI Geographical Survey Institute Schedule name: syw015.skd on CDDISA SUBNET Hh Ho Sy station key codes: Hh=HARTRAO Ho=HOBART26 Sy=SYOWA Nominal Start: 08:00 U.T. on Dec. 07 (day 342) name yyddd-hhmmss Hh Ho Sy 1057-797 00342-080000| 170 120 170 | Duration: 24 hours Nominal Stop: 08:00 U.T. on Dec. 08 (day 343) name yyddd-hhmmss Hh Ho Sy 0537-441 00343-074200| 120 120 | 1034-293 00343-075900| 270 270 | 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 syw015.skd for experiment SYW015 (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 S x x x x I 5 7 5.0 0048-097I R x S x I 2 4 2.9 0104-408I x x x xR x x x S x x I 9 15 8.8 0119+041I R xS x x x x x x I 7 9 6.8 0208-512I x x x x x x x x x x Rx x x x x x Sx x x I 19 31 16.9 0229+131IS x x I 2 2 1.6 CTA26 I xR x S x I 3 5 3.8 0402-362I x x xx x x x R x S x x I 10 12 6.9 0454-234I x x x x x x x x x x R x x x x x S I 16 24 15.1 0458-020I R x Sx x I 3 5 3.7 0528+134IS x x I 2 2 1.6 0537-441I x x x x R x x S I 6 10 5.7 0637-752I x S x x x Rx x x I 7 15 7.8 0727-115I x x x x x x x x R x S x I 10 12 8.4 0823+033I x R x S I 2 4 3.0 0920-397I S x x R I 2 2 1.0 1034-293I S x x x x x x x x x x R x xI 12 16 9.5 1057-797I x x S R I 2 6 3.4 1104-445I S x x R I 2 2 1.1 1124-186I x S x x x x x x R I 7 9 5.9 1144-379I x S x x R I 3 5 2.8 1219+044I R S I 0 0 .0 1255-316IR x x x x S x x x x I 9 17 10.4 1334-127I R x S x x x x x xI 8 12 8.4 1351-018I R S I 0 0 .0 1424-418I R x S x x x x I 5 7 4.3 1606+106I x R S x x x x I 6 6 4.7 1610-771I R x S x I 2 4 2.0 1741-038I x Rx xS x x x x x x I 9 13 9.5 1749+096I R Sx I 1 1 .8 1815-553I x x x x R x x x x S x xI 10 10 4.7 1921-293I x x x x R x x Sx x x x x x I 12 16 10.0 1954-388I x R x x S x x I 7 13 7.7 1958-179I x x x xR x x xS x x x x x I 12 18 11.7 2121+053I R S I 0 0 .0 2128-123I xR x xS I 3 7 5.0 2145+067I x R x S x x I 4 6 4.6 2255-282I x x R S I 2 2 1.1 Total scans, obs: 221 329 Average number of obs. per baseline per source (normalized by up-time) = 5.4 Min = .0 Max = 20.4 (Baseline HH-Sy on 0208-512) RMS = 5.1 Total time: 1443 minutes ( 24.1 hours). Key: HH=HARTRAO HO=HOBART26 Sy=SYOWA HH HO Sy Avg % obs. time: 46 39 69 51 % cal. time: 1 1 2 1 % slew time: 27 20 5 17 % idle time: 23 38 23 28 # of tapes : 4.0 4.0 4.0 total # scans: 146 136 214 165 # scans/hour : 6 5 8 6.9 Avg scan (sec): 277 251 279 269 # OF OBSERVATIONS BY BASELINE | HH HO Sy StnTotal -------------------------- HH|146 61 139 200 HO| 136 129 190 Sy| 214 268 Number of 2-station scans: 167 Number of 3-station scans: 54 Total # of scans, observations: 221 329 Average baseline components for all observations Average XY = 5448. Average XZ = 5967. Average YZ = 2478. Average length = 6070.