CORE-OHIG10 (Continuous Observations of the Rotation of the Earth and South terrestical reference frame network) 2000 Feb. 03 Notes prepared by Arno Mueskens Geodetic Institute of the University of Bonn, Germany Schedule name: cohg10.skd on CDDISA Nominal Start: 12:00 U.T. on Feb. 03 (day 034) name yyddd-hhmmss Ft Hh Ho Kk Oh 1741-038 00034-120001| 150 150 150| 1144-379 00034-120430| 90 620 620| Duration: 24 hours Nominal Stop: 19:00 U.T. on Nov. 11 (day 315) name yyddd-hhmmss Ft Hh Ho Kk Oh 1749+096 00035-115540| 380 240 380| OJ287 00035-115759| 90 90 | Correlator: Bonn Purpose ======= The purpose of the CORE-OHIG (Southern Terrestrial Reference Frame) sessions is to tie together optimally the sites in the southern hemisphere. The participating sites include all the sites in the south - O'Higgins, Fortaleza, Hartebeesthoek, and Hobart - as well as Kokee Park. The last site is the southern-most of the northern sites and have been included to make the geometry more robust and to increase the number of observations per scan. Because these sessions concentrate on the southern sites and do not use observing time to accurately tie these sites to far northern sites (as the Global Sessions do) they should yield a very accurate regional TRF around the South Pole. The characteristics of this network have changed slightly due to more weigh of the southern part. Schedule ======== This is a new schedule generated with the automatic mode of sked using the variable scan length with a minimum of 70 seconds. The most recent and updated source flux models are included. SNR goals are 20(15) at X-band and 15(10) at S-band for all stations. Due to the uncertain participation of Syowa at this time this station was scheduled in the tag along mode. The predicted SNRs used include a 30 ps noise contribution added in quadrature, which is a typical size for the reweight constants size for the reweight constants required in SOLVE solutions. This schedule was optimized by different features: - the covariance analysis during schedule generation considers the previous 2 hours of observations, - minor SKED optimization parameters . maximum number of observations, were optimized over the best ( in a covariance sense ) 65% of the possible observations, this produces a somewhat more even sky distribution, - 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 60 sources which helped improve the sky coverage. Procedures ========== Please generate the procedures for this session using drudg with the existing skd file. 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: The NEOS-wideband RF band frequency sequence ------------------ is used for this experiment. THIS SCHEDULE HAS NONE SECOND EARLY TAPE START ---------------------------------------------- THIN TAPE STATIONS AND HIGH DENSITY RECORDING: --------------------------------------------- KOKEE, HARTRAO, SYOWA(K4) Summary ======= SKED Summary from file cohg10.skd for experiment COHG10 (all scans with at least one subnet station) SOURCE |0 6 12 18 | #SCANS #O 0003-066I xxx x x xx I 7 7 1.6 0048-097Ixx x x xxxx x x x xx xx xx x x xI 20 22 4.9 0104-408I x x x x I 4 8 1.4 0119+115I x I 1 1 .2 0119+041I xx x x I 4 4 1.0 0208-512I x x x x x xx I 7 7 .8 0229+131I x xxxxxx xxx xx I 12 12 3.1 CTA26 I xxxxx xxxxxx x xx xx xxx x I 20 20 4.6 0402-362I x x x xx x x x xxx xx x I 14 14 2.8 0454-234I x x x xx xxxx x xx x x x x x I 17 31 6.0 0458-020I x I 1 1 .2 0528+134I xxxx xxxx xx x x xxxxxxx xxxI 22 22 5.2 0537-441I x xx x I 4 4 .8 0552+398I xxxx x x I 6 6 1.7 0637-752I x x xx x I 5 10 1.7 0727-115I xxx x x x x xxxxxxxxx xxx xxx x xxx xxxxxI 32 60 12.9 0749+540I x x x I 3 3 1.4 0804+499I x I 1 1 .5 0823+033Ixx xx x xx x I 8 8 1.7 OJ287 Ixxx x xxxx xxx xx xx xxxxx I 20 20 5.1 0920-397I I 0 0 .0 4C39.25 Ixx xx x xx x x xxx I 12 12 5.3 0955+476I x I 1 1 .5 1034-293Ix x x x xx xxx xx xx xx xI 16 16 2.8 1057-797I x x I 2 2 .2 1124-186Ix xx xx x xx x xxx xx x x xI 17 17 3.4 1144-379I x xx x x x xxxxx x xxxx xx I 18 20 3.4 1308+326I x xx x x I 5 5 2.3 1334-127I x xx x x xxx xxxxx xx I 15 15 3.3 1351-018I x xx xx xxx I 9 9 2.2 1357+769I x x x I 3 3 2.2 1424-418I xx x x x x x x x xx xx x xxx xx x I 20 20 3.3 1606+106I x xxxxxxx xxxxx I 13 13 3.2 1610-771I x x x I 3 3 .3 1622-253I xx x x x xx x x xx xx xxxxxxxxx I 22 22 4.0 NRAO512 I x x xxx xx x I 8 8 2.2 1741-038I x x x xx xxxxxxx xxxxxxx xx xxxxxxxxxx xxxxI 36 66 14.4 1749+096I x x x xxx xx x xx x x x I 14 24 5.2 1815-553Ix x xI 3 3 .3 1921-293I xx xx x x x x xxx xxx x xxxxxx xxxxI 25 39 7.4 1954-388Ix xxxx x x x xx x xx xx xxxx xx xI 22 36 6.4 1958-179I xxxx x x x xxxx xxxxx x x xx x x x x xxI 26 32 6.4 2121+053Ixxxxx x x xx I 10 10 2.4 2145+067I x x xxx x xx x x I 10 14 3.1 2234+282I x I 1 1 .2 2255-282I xx xx xx xx I 8 8 1.7 Total scans, obs: 527 660 Average number of obs. per baseline per source (normalized by up-time) = 2.6 Min = .0 Max = 35.9 (Baseline Ft-Oh on 1741-038) RMS = 6.2 Total time: 1439 minutes ( 24.0 hours). Key: Ft=FORTLEZA Hh=HARTRAO Ho=HOBART26 Kk=KOKEE Oh=OHIGGINS Ft Hh Ho Kk Oh Avg % obs. time: 53 44 49 47 33 45 % cal. time: 2 2 3 3 1 2 % slew time: 28 38 35 11 8 24 % idle time: 15 14 12 37 56 27 # of tapes : 2.9 .7 2.5 .7 1.9 total # scans: 217 215 303 279 106 224 # scans/hour : 9 8 12 11 4 9.3 Avg scan (sec): 214 176 139 148 270 189 # OF OBSERVATIONS BY BASELINE | Ft Hh Ho Kk Oh StnTotal ---------------------------------- Ft|217 171 1 31 54 257 Hh| 215 42 0 46 259 Ho| 303 243 45 331 Kk| 279 27 301 Oh| 106 172 Number of 2-station scans: 462 Number of 3-station scans: 64 Number of 4-station scans: 1 Number of 5-station scans: 0 Total # of scans, observations: 527 660 Average baseline components for all observations Average XY = 6131. Average XZ = 5910. Average YZ = 6614. Average length = 7944.