IVS-T2038 (International VLBI Service - Terrestical Reference Frame Observations) 2005 Apr. 05/06 doy 095/096 Geodetic Institute of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2005 Purpose ======= General the purpose of the IVS-T2 sessions is to monitor the TRF via monthly sessions. Since April 2004 the purpose of the remaining IVS-T2 sessions has been changed by the IVS OPC (Observing Program Committee). The new plan uses larger networks for each T2 session, say 16 to 20 stations, but have fewer T2 sessions during the year. The larger network should provide a stronger solution and better TRF results, even if there are fewer sessions each year. The TRF determine from single session solutions or from a global solution is very important IVS product because this is an essential part for creating the ITRF by corresponding IERS Product Center. A particular strength of VLBI is its contribution to the scale of the ITRF. Usually the TRF is computed from the 24h sessions that are dedicated to observing the EOP. Network ======= The standard configuration of the monthly observed IVS-T2 experiments consists of sixteen and more stations. All stations differ in some extent between all available IVS geodetic network stations from experiment to experiment. Schedule ======== This schedule was generated by SKED (JMG/NRV 2005Feb22) using the EUR-SX band and the EURSX-C-2 frequency setup, depending on which station are available for this observation. Variable scan lengths with a minimum 40 sec. and the most recent source flux models are included. SNR goals are 20 at X-band and S-band depent on different baselines and stations. The predicted SNRs used include a 30 ps noise contribution added in quadrature, which is a typical magnitude for the reweight constants applied in SOLVE solutions. Some important optimization features enabled for this experiment : - the covariance analysis during schedule generation considers the previous 1 hours of observations, - minor SKED optimization parameters . maximum number of observations, . minimum time, were optimized over the best ( in a covariance sense ) 70% 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 - using 63 source for improving the sky covorage (and some new astrometric sources / see $ASTROMETRIC ) Procedures ========== 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. Parameter values for experiment T2038 Experiment description: IVS-T2.038 Scheduler: BONN/Mueskens Nominal start: 2005-095-17:30:00 Nominal end: 2005-096-17:30:01 Current yyyyddd: 2005095 (2005.26) ( 13466 MJD, TUES 5APR.) Greenwich sidereal time: 6:26:27.00 (17:30: 0 UT) Sun's RA and DEC: 0h 59.1m 6d 18.3 =========================================================== There are no observations for Kokee and Wettzell from 18:50 U.T. to 20:10 U.T. Kokee and Wettzell will participate in the intensive session during this two hour period. =========================================================== First observations Observation listing from file t2038.skd for experiment T2038 Source Start DURATIONS name yyddd-hhmmss Sm Ft Hh Ho Kb Kk Mc Mh On Pa Tc Ts Ur Wf Wz 0955+476 05095-173000| 302 75 68 325 325 62 227 227 151| 0607-157 05095-173412| 116 111 70 116 | 1519-273 05095-173422| 133 88 133 40 51 | =========================================================== Last observations 2121+053 05096-170629| 60 60 | NRAO512 05096-170732| 380 380 | 1300+580 05096-171004| 189 350 350 158 | 0607-157 05096-171108| 118 118 46 72 40| 1622-253 05096-171339| 40 40 | 0727-115 05096-171351| 86 86 40| NGC6251 05096-171428| 53 53 | 0823+033 05096-171833| 288 126 288| End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 4.0 Min = .0 Max = 68.6 (Baseline Sm-Kb on 1622-253) RMS = 7.3 Total time: 1433 minutes ( 23.9 hours). Key: Sm=CRIMEA Ft=FORTLEZA Hh=HARTRAO Ho=HOBART26 Kb=KASHIM34 Kk=KOKEE Mc=MEDICINA Mh=METSAHOV On=ONSALA60 Pa=PARKES64 Tc=TIGO Ts=TSUKUB32 Ur=URUMQI Wf=WESTFORD Wz=WETTZELL Sm Ft Hh Ho Kb Kk Mc Mh On Pa Tc Ts Ur Wf Wz Avg % obs. time: 47 44 37 32 38 43 36 48 49 14 13 32 47 48 41 38 % cal. time: 2 1 1 2 3 2 3 2 2 2 0 3 2 2 2 2 % slew time: 28 24 32 40 32 12 32 30 15 55 1 13 20 8 8 23 % idle time: 22 28 28 24 24 40 27 19 32 28 84 50 30 40 46 35 total # scans: 188 168 156 229 293 233 278 180 194 210 43 310 184 184 245 206 # scans/hour : 7.9 7.0 6.5 9.6 12.3 9.8 11.6 7.5 8.1 8.8 1.8 13.0 7.7 7.7 10.3 8.6 Avg scan (sec): 216 229 205 120 113 160 111 230 217 58 269 88 221 226 146 173 Total GBytes: 320 303 252 216 262 294 244 326 332 96 91 216 320 328 282 259 Total GB(M5): 325 308 256 220 267 299 248 331 338 97 92 220 325 333 287 264 # of tapes : 2.6 2.6 .5 .5 2.0 .6 .5 .7 .7 .7 .2 .5 .7 .7 .6 Total number of tapes: 14.2 Total GBytes (M5) recorded: 3954.2 # OF OBSERVATIONS BY BASELINE | Sm Ft Hh Ho Kb Kk Mc Mh On Pa Tc Ts Ur Wf Wz StnTotal -------------------------------------------------------------------------- Sm|188 16 49 7 41 8 140 91 99 7 0 43 81 23 126 731 Ft| 168 68 1 0 19 38 14 22 0 23 1 6 94 29 331 Hh| 156 36 16 0 54 26 40 25 5 19 39 16 54 447 Ho| 229 95 84 4 3 3 173 9 102 28 3 3 551 Kb| 293 132 78 55 54 99 4 280 109 34 62 1059 Kk| 233 32 23 22 77 26 134 36 57 27 677 Mc| 278 116 133 0 4 85 95 56 191 1026 Mh| 180 150 1 0 58 86 51 137 811 On| 194 0 1 56 86 54 153 873 Pa| 210 8 104 27 0 0 521 Tc| 43 4 0 22 0 106 Ts| 310 114 37 66 1103 Ur| 184 31 91 829 Wf| 184 59 537 Wz| 245 998 Number of 2-station scans: 319 Number of 3-station scans: 208 Number of 4-station scans: 146 Number of 5-station scans: 93 Number of 6-station scans: 36 Number of 7-station scans: 21 Number of 8-station scans: 31 Number of 9-station scans: 17 Number of 10-station scans: 2 Total # of scans, observations: 873 5300 =========================================================== Recording mode Name Code EUR-SX SX Recording mode setup for: CRIMEA FORTLEZA KASHIM34 PARKES Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 135.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 85.0 MHz rms spanned bw= 33.0 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 Recording mode setup for: HARTRAO HOBART26 KOKEE MEDICINA METSAHOV ONSALA60 TIGOCONC TSUKUB32 URUMQI WESTFORD WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 80.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 85.0 MHz rms spanned bw= 33.0 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 =========================================================== Monitoring Sources Source Min Max Actual Num #Scans 0405-385 3.00 100.00 1.43 76 24 1034-293 3.00 100.00 .85 45 22 1519-273 3.00 100.00 2.17 115 29 1622-253 5.00 100.00 3.40 180 36 Total 7.85 416 111 =========================================================== Minor Options Option Norm Wt Aux_Parm Astro Abs 5.00 BegScan Rel 1.00 EndScan Rel 1.00 NumObs Rel 5.00 StatIdle Abs 1.00 StatWt Abs 3.00 FFFFF FFFFF TFFFF =========================================================== Major Options SkyCov Yes Min_Between 20 Best% 80.0 Last_Hrs 24.00 Add_ps 30.00 Obs_Wts SNRwt =========================================================== Tape types ID Station Tape length Density Passes Sm CRIMEA 8700feet (Thick ) 33333 (Low ) 12 Ft FORTLEZA 8700feet (Thick ) 33333 (Low ) 12 Hh HARTRAO 17400feet (Thin ) 56250 (HIGH ) 12 Ho HOBART26 17400feet (Thin ) 56250 (HIGH ) 12 Kb KASHIM34 8700feet (Thick ) 33333 (Low ) 12 Kk KOKEE 17400feet (Thin ) 56250 (HIGH ) 12 Mc MEDICINA 17400feet (Thin ) 56250 (HIGH ) 12 Mh METSAHOV 17400feet (Thin ) 56250 (HIGH ) 12 On ONSALA60 17400feet (Thin ) 56250 (HIGH ) 12 Pa PARKES 8700feet (Thick ) 33333 (Low ) 12 Tc TIGOCONC 17400feet (Thin ) 56250 (HIGH ) 12 Ts TSUKUB32 17400feet (Thin ) 56250 (HIGH ) 12 Ur URUMQI 17400feet (Thin ) 56250 (HIGH ) 12 Wf WESTFORD 17400feet (Thin ) 56250 (HIGH ) 12 Wz WETTZELL 17400feet (Thin ) 56250 (HIGH ) 12 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 3) S-band (margin 3) Sm Ft Hh Ho Kb Kk Mc Mh On Pa Tc Ts Ur Wf Sm Ft Hh Ho Kb Kk Mc Mh On Pa Tc Ts Ur Wf Ft 23 Ft 23 Hh 23 23 Hh 23 23 Ho 23 23 23 Ho 23 23 23 Kb 23 23 23 23 Kb 23 23 23 23 Kk 23 23 23 23 23 Kk 23 23 23 23 23 Mc 23 23 23 23 23 23 Mc 23 23 23 23 23 23 Mh 20 20 20 20 20 20 20 Mh 20 20 20 20 20 20 20 On 23 23 23 23 23 23 23 20 On 23 23 23 23 23 23 23 20 Pa 23 23 23 23 23 23 23 20 23 Pa 23 23 23 23 23 23 23 20 23 Tc 18 18 18 18 18 18 18 18 18 18 Tc 18 18 18 18 18 18 18 18 18 18 Ts 23 23 23 23 23 23 23 20 23 23 18 Ts 23 23 23 23 23 23 23 20 23 23 18 Ur 23 23 23 23 23 23 23 20 23 23 18 23 Ur 23 23 23 23 23 23 23 20 23 23 18 23 Wf 23 23 23 23 23 23 23 20 23 23 18 23 23 Wf 23 23 23 23 23 23 23 20 23 23 18 23 23 Wz 23 23 23 23 23 23 23 20 23 23 18 23 23 23 Wz 23 23 23 23 23 23 23 20 23 23 18 23 23 23