IVS-T2093
(International VLBI Service - Terrestical Reference Frame Observations)
2013 Nov.19-20
doy 323-324
Institute for Geodesy and Geoinformation (IGGB)
of the University of Bonn, Germany
Nominal Start Time: 2013:323:17h30 UT
Nominal End Time: 2013:324:17h30 UT
Duration: 24.0 hr
Correlator: BONN
Participating stations (20):
======================
Ft FORTLEZA
Wf WESTFORD
Tc TIGOCONC
Kk KOKEE
Cc CHICHI10
Vm VERAMZSW
K1 KASHIM11
Kb KASHIM34
Kg KOGANEI
Ai AIRA
Vs VERAISGK
Km KUNMING
Ur URUMQI
Sm CRIMEA
Hh HARTRAO
Mh METSAHOV
Wz WETTZELL
Ny NYALES20
On ONSALA60
Mc MEDICINA
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 24 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 the last updated SKED version
using the EUR-SX band and the 64-16(EU-T2) EURSX-C-4 frequency setup,
depending on which station are available for this observation.
Variable scan lengths with a minimum 15 sec. and the most recent
source flux models are included. SNR goals are around 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 ) 75% 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
Session Notes for session: t2093
===========================================================
Experiment: T2093 Description IVS-T2.093
Scheduler: IGGB/Muesk Correlator: BONN
Start: 2013-323-17:30:00 End: 2013-324-17:30:01
Current yyyyddd: 2013323 (2013.88) ( 16616 MJD, TUES 19NOV.)
===========================================================
There are no observations for Kokee and Wettzell from 18:20 U.T.
to 19:40 U.T. Kokee and Wettzell will participate in the
intensive session during this 1.5 hour period.
===========================================================
First observations
Observation listing from file t2093.skd for experiment T2093
Source Start DURATIONS
name yyddd-hhmmss Ai Cc Sm Ft Hh Kb K1 Kk Km Kg Mc Mh Ny On Tc Ur Vs Vm Wf Wz
0059+581 13323-173000| 616 654 463 40 335 68 231 509 233 603 154 675 675 327|
1424-418 13323-173000| 241 241 158 |
1815-553 13323-173517| 104 104 |
0119+115 13323-173606| 103 103|
OJ287 13323-173642| 33 216 138 36 214 215 108 216 |
Last observations
1846+322 13324-171604| 665 665 659 494|
0727-115 13324-171800| 569 569 35 232 46 231 132 |
0308-611 13324-171858| 650 650 |
0632-235 13324-171923| 390 453 453 |
1334-127 13324-172047| 396 361 396 |
OJ287 13324-172228| 201 202 110 202 |
1803+784 13324-172602| 140 140 99|
===========================================================
Average number of obs. per baseline per source(normalized by up-time) = 0.8
Min = 0.0 Max = 90.0 (Baseline Hh-Ny on 1741-038) RMS = 3.8
Total time: 1439 minutes ( 24.0 hours).
Key: Ai=AIRA Cc=CHICHI10 Sm=CRIMEA Ft=FORTLEZA Hh=HARTRAO
Kb=KASHIM34 K1=KASHIM11 Kk=KOKEE Km=KUNMING Kg=KOGANEI
Mc=MEDICINA Mh=METSAHOV Ny=NYALES20 On=ONSALA60 Tc=TIGO
Ur=URUMQI Vs=VERAISGK Vm=VERAMZSW Wf=WESTFORD Wz=WETTZELL
Ai Cc Sm Ft Hh Kb K1 Kk Km Kg Mc Mh Ny On Tc Ur Vs Vm Wf Wz Avg
% obs. time: 56 54 30 65 40 30 56 47 31 54 51 24 45 58 54 45 37 41 57 40 46
% cal. time: 1 1 1 2 2 3 2 2 3 2 2 1 2 2 1 2 1 1 2 2 2
% slew time: 4 4 15 21 28 39 6 15 30 7 25 5 12 10 2 23 4 5 9 7 14
% idle time: 37 40 53 11 29 26 35 35 35 36 20 69 40 30 43 28 57 52 31 50 38
total # scans: 122 115 91 144 145 299 178 198 289 184 182 75 185 134 108 199 113 98 192 196 162
# scans/hour : 5 5 4 6 6 12 7 8 12 8 8 3 8 6 5 8 5 4 8 8 7
Avg scan (sec): 398 406 285 392 241 88 270 206 92 254 243 274 208 373 428 196 285 363 254 177 271
# data tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
# Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Total GBytes: 874 840 467 1016 628 474 866 733 480 841 796 370 692 900 832 702 580 640 879 623 712
Total GB(M5): 777 747 415 903 559 421 770 652 426 748 708 329 615 800 740 624 516 569 781 554 633
Total GBytes (M5) recorded: 12652.0
# OF OBSERVATIONS BY BASELINE
| Ai Cc Sm Ft Hh Kb K1 Kk Km Kg Mc Mh Ny On Tc Ur Vs Vm Wf Wz Total
--------------------------------------------------------------------------------------------------------------
Ai| 84 30 0 8 89 82 43 81 84 29 2 36 29 0 57 42 41 19 26 782
Cc| 26 0 6 92 78 50 69 77 26 2 31 26 0 45 42 43 17 23 737
Sm| 13 33 38 34 17 53 35 68 28 50 62 3 59 11 17 34 59 670
Ft| 71 0 0 20 5 0 37 3 25 29 60 8 0 0 65 40 376
Hh| 11 7 0 31 8 55 14 22 35 45 31 5 5 31 59 477
Kb| 154 100 188 163 54 9 70 50 1 113 73 82 34 51 1372
K1| 77 114 149 38 4 52 35 0 80 56 62 28 36 1086
Kk| 64 81 29 4 57 29 33 49 21 39 77 32 822
Km| 119 72 24 69 58 0 156 86 58 33 72 1352
Kg| 39 3 55 36 0 90 57 62 27 37 1122
Mc| 41 109 107 4 92 9 20 96 155 1080
Mh| 42 35 0 29 0 0 18 47 305
Ny| 82 5 88 17 23 106 108 1047
On| 3 73 10 21 74 104 898
Tc| 0 0 0 16 4 174
Ur| 39 35 48 90 1182
Vs| 18 0 7 493
Vm| 19 18 563
Wf| 94 836
Wz| 1062
Total # of scans, observations: 778 8218
===========================================================
Recording mode
Name Code
EUR2-SX SX
Recording mode setup for:
AIRA CHICHI10 CRIMEA HARTRAO KASHIM11 KOKEE KUNMING KOGANEI
NYALES20 TIGOCONC URUMQI VERAMZSW WESTFORD
Mode Tot.Rate Tot.BandW #chan #bits Barrel
Mk341:1 128.000 Mbits 64.000 MHz 14 1 NONE
Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed
4.00 MHz 1 16(*1) 16 0.00
X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz
S-band spanned bw= 80.0 MHz rms spanned bw= 30.2 MHz
Effective number of channels recorded per sub-pass
X S Total
10.000 6.000 16.000
Recording mode setup for:
FORTLEZA KASHIM34 MEDICINA ONSALA60 VERAISGK WETTZELL
Mode Tot.Rate Tot.BandW #chan #bits Barrel
Mk341:2 128.000 Mbits 64.000 MHz 14 1 NONE
Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed
4.00 MHz 1 16(*2) 32 0.00
X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz
S-band spanned bw= 80.0 MHz rms spanned bw= 30.2 MHz
Effective number of channels recorded per sub-pass
X S Total
10.000 6.000 16.000
Recording mode setup for:
METSAHOV
Mode Tot.Rate Tot.BandW #chan #bits Barrel
VLBA1:2 128.000 Mbits 64.000 MHz 14 1 NONE
Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed
4.00 MHz 1 16(*2) 32 0.00
X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz
S-band spanned bw= 80.0 MHz rms spanned bw= 30.2 MHz
Effective number of channels recorded per sub-pass
X S Total
10.000 6.000 16.000
===========================================================