IVS-T2039 (T2029new) (International VLBI Service - Terrestical Reference Frame Observations) 2005 Jun. 28/29 doy 179/180 Geodetic Institute of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2005 (master05.txt) 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. =========================================================== There are no observations for Wettzell from 18:30 U.T. to 19:30 U.T due to INTensive. DSS15 will observe from 179-17:30 to 180-16:00 (22.5 hours) =========================================================== Parameter values for experiment T2039 Experiment description: IVS-T2.039 Scheduler: BONN/Mueskens Nominal start: 2005-179-17:30:00 Nominal end: 2005-180-17:30:01 Current yyyyddd: 2005179 (2005.49) ( 13550 MJD, TUES 28JUN.) Greenwich sidereal time: 11:57:38.00 (17:30: 0 UT) Sun's RA and DEC: 6h 31.0m 23d 14.8 =========================================================== First observations Observation listing from file t2039a.skd for experiment T2039 Source Start DURATIONS name yyddd-hhmmss Ap Yk Sm 15 Ft Ho Kb Mh Ny On Tc Ts Wf Wz 1044+719 05179-173000| 53 500 141 149 265 500 92 310 469| 1334-127 05179-173000| 143 266 266 | End of listing. =========================================================== name yyddd-hhmmss Ap Yk Sm 15 Ft Ho Kb Mh Ny On Tc Ts Wf Wz 1739+522 05180-153950| 40 40 40 | 1923+210 05180-170921| 466 466 | 0059+581 05180-171305| 81 500 354 404 206 500 431| 0537-441 05180-171341| 125 125 | 2318+049 05180-171737| 125 125 | 1300+580 05180-171824| 241 241 | End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 2.7 Min = .0 Max = 110.8 (Baseline Sm-Ts on 1519-273) RMS = 5.9 Total time: 1432 minutes ( 23.9 hours). Key: Ap=ALGOPARK Yk=ARIES_9M Sm=CRIMEA 15=DSS15 Ft=FORTLEZA Ho=HOBART26 Kb=KASHIM34 Mh=METSAHOV Ny=NYALES20 On=ONSALA60 Tc=TIGO Ts=TSUKUB32 Wf=WESTFORD Wz=WETTZELL Ap Yk Sm 15 Ft Ho Kb Mh Ny On Tc Ts Wf Wz Avg % obs. time: 24 48 46 33 33 25 43 43 46 53 12 38 49 44 38 % cal. time: 2 1 1 2 1 1 2 1 2 1 0 2 1 2 1 % slew time: 60 11 23 29 18 21 30 20 12 11 1 11 7 7 19 % idle time: 13 38 28 34 46 50 23 34 39 33 85 46 40 46 40 total # scans: 208 131 142 201 104 118 221 135 180 158 37 240 158 178 157 # scans/hour : 8.7 5.5 5.9 8.4 4.4 4.9 9.3 5.7 7.5 6.6 1.6 10.1 6.6 7.5 6.6 Avg scan (sec): 100 317 280 144 279 188 167 279 219 289 297 138 268 213 227 Total GBytes: 164 327 313 229 228 175 291 297 311 359 86 262 333 299 263 Total GB(M5): 167 332 318 233 232 178 296 302 316 365 88 266 339 304 267 # of tapes : .4 3.0 2.8 .5 2.1 .4 2.5 .7 .7 .8 .2 .6 .8 .7 tape change times (hhmm): 0000 0147 0135 0000 0425 0000 0301 0000 0000 0000 0000 0000 0000 0000 0000 1010 1050 0000 1656 0000 1153 0000 0000 0000 0000 0000 0000 0000 Total number of tapes: 16.0 Total GBytes (M5) recorded: 3740.9 # OF OBSERVATIONS BY BASELINE | Ap Yk Sm 15 Ft Ho Kb Mh Ny On Tc Ts Wf Wz StnTotal ---------------------------------------------------------------------- Ap|208 81 36 112 40 3 54 29 81 51 14 66 109 66 742 Yk| 131 18 70 11 5 54 24 67 35 0 57 66 48 536 Sm| 142 20 24 4 42 83 67 87 1 51 29 87 549 15| 201 23 32 79 17 59 33 10 89 72 43 659 Ft| 104 2 4 24 12 27 25 4 45 25 266 Ho| 118 90 2 1 3 6 93 2 1 244 Kb| 221 39 83 47 1 206 45 62 806 Mh| 135 73 106 1 43 33 77 551 Ny| 180 96 1 87 74 122 823 On| 158 5 55 59 103 707 Tc| 37 3 10 4 81 Ts| 240 48 66 868 Wf| 158 72 664 Wz| 178 776 Number of 2-station scans: 192 Number of 3-station scans: 198 Number of 4-station scans: 76 Number of 5-station scans: 39 Number of 6-station scans: 20 Number of 7-station scans: 24 Number of 8-station scans: 26 Number of 9-station scans: 22 Number of 10-station scans: 4 Number of 11-station scans: 0 Number of 12-station scans: 0 Number of 13-station scans: 0 Number of 14-station scans: 0 Number of 15-station scans: 0 Number of 16-station scans: 0 Total # of scans, observations: 601 4136 =========================================================== Recording mode Name Code EUR-SX SX Recording mode setup for: ALGOPARK DSS15 HOBART26 METSAHOV NOTO NYALES20 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 Recording mode setup for: YLOW7296 CRIMEA FORTLEZA KASHIM34 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 =========================================================== Monitoring Sources Source Min Max Actual Num #Scans 0405-385 3.00 100.00 .19 8 8 1034-293 3.00 100.00 1.38 57 25 1519-273 3.00 100.00 1.35 56 27 1622-253 5.00 100.00 1.45 60 19 Total 4.38 181 79 =========================================================== 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 FTFFF FFFFF FFTFF F =========================================================== Major Options SkyCov Yes Min_Between 20 Best% 75.0 Last_Hrs 24.00 Add_ps 30.00 Obs_Wts SNRwt =========================================================== Tape types ID Station Tape length Density Passes Ap ALGOPARK 17400feet (Thin ) 56250 (HIGH ) 12 Yk YLOW7296 8700feet (Thick ) 33333 (Low ) 12 Sm CRIMEA 8700feet (Thick ) 33333 (Low ) 12 15 DSS15 17400feet (Thin ) 56250 (HIGH ) 12 Ft FORTLEZA 8700feet (Thick ) 33333 (Low ) 12 Ho HOBART26 17400feet (Thin ) 56250 (HIGH ) 12 Kb KASHIM34 8700feet (Thick ) 33333 (Low ) 12 Mh METSAHOV 17400feet (Thin ) 56250 (HIGH ) 12 Nt NOTO 17400feet (Thin ) 56250 (HIGH ) 12 Ny NYALES20 17400feet (Thin ) 56250 (HIGH ) 12 On ONSALA60 17400feet (Thin ) 56250 (HIGH ) 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) Ap Yk Sm 15 Ft Ho Kb Mh Ny On Tc Ts Wf Ap Yk Sm 15 Ft Ho Kb Mh Ny On Tc Ts Wf Yk 18 Yk 18 Sm 23 18 Sm 23 18 15 23 18 23 15 23 18 23 Ft 23 18 23 23 Ft 23 18 23 23 Ho 23 18 23 23 23 Ho 23 18 23 23 23 Kb 23 18 23 23 23 23 Kb 23 18 23 23 23 23 Mh 23 18 23 23 23 23 23 Mh 23 18 23 23 23 23 23 Ny 23 18 23 23 23 23 23 23 Ny 23 18 23 23 23 23 23 23 On 23 18 23 23 23 23 23 23 23 On 23 18 23 23 23 23 23 23 23 Tc 15 15 15 15 15 15 15 15 15 15 Tc 15 15 15 15 15 15 15 15 15 15 Ts 23 18 23 23 23 23 23 23 23 23 15 Ts 23 18 23 23 23 23 23 23 23 23 15 Wf 23 18 23 23 23 23 23 23 23 23 15 23 Wf 23 18 23 23 23 23 23 23 23 23 15 23 Wz 23 18 23 23 23 23 23 23 23 23 15 23 23 Wz 23 18 23 23 23 23 23 23 23 23 15 23 23