IVS-T2129 
  (International VLBI Service - Terrestical Reference Frame Observations)
                            2018 Dec.18-19                       
                             doy 352-353 
             Institute for Geodesy and Geoinformation (IGGB) 
                 of the University of Bonn, Germany

Nominal Start Time: 2018:352:17h30 UT
Nominal End Time:   2018:353:17h30 UT
Duration:           24.0 hr
Correlator: BONN                        

Participating stations(18)  
======================
Sm=CRIMEA     
6a=DSS65A     
Ht=HART15M    
Is=ISHIOKA    
Kb=KASHIM34
Sm=CRIMEA
Kg=KOGANEI    
Ma=MATERA     
Ny=NYALES20   
Oh=OHIGGINS  
On=ONSALA60  
Kg=KOGANEI
Kv=SEJONG     
Sv=SVETLOE    
Vm=VERAMZSW   
Wz=WETTZELL
Ys=YEBES40M   
Zc=ZELENCHK

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 15 min

COMMENTS
========
There are no observations for Wettzell from 18:20 U.T.
to 19:40 U.T. Wettzell will participate in the
Intensive session during this 1.5 hour period.

We have to vacate some satellite passages on OHIG station.
That produce several observing gaps during this 24 hours. 

DSS6a observing time from 352-19:10 until 353-10:45 UT

Session Notes for session: t2129.skd
===========================================================
 Experiment: T2129                       Description IVS-T2129
 Scheduler:  BONN/Vienn                  Correlator: BONN      
 Start:      2018-352-17:30:00           End:        2018-353-17:30:00
 Current yyyyddd:    2018352 (2018.96)  ( 18471 MJD, TUES 18DEC.)
===========================================================
First observations
Observation listing from file t2129.skd  for experiment T2129   
Source      Start      DURATIONS                                                   
name     yyddd-hhmmss   Sm  6a  Ht  Is  Kb  Kg  Ma  Ny  Oh  On  Kv  Sv  Vm  Wz  Zc  
1055+018 18352-173000|             111  30 111                  99     100        |  
CTA102   18352-173000| 378     200             561 585 585 568     394     217 129|  
2234+282 18352-191346|     119                     132     132      94      39 100|  
Last observations
2134+00  18353-170653| 700                     700 411 700 407     217         216|  
0235+164 18353-171448|         700 700 700 700     700     700 700 700 700 700 700|  
===========================================================
 Average number of obs. per baseline per source(normalized by up-time) =   8.4
 Min =    0.0  Max =   90.0 (Baseline Oh-Kv on NRAO530 )   RMS =   8.4
 Total time:       1437 minutes (  24.0 hours).

 Key:     Sm=CRIMEA     6a=DSS65A     Ht=HART15M    Is=ISHIOKA    Kb=KASHIM34
          Kg=KOGANEI    Ma=MATERA     Ny=NYALES20   Oh=OHIGGINS   On=ONSALA60
          Kv=SEJONG     Sv=SVETLOE    Vm=VERAMZSW   Wz=WETTZELL   Zc=ZELENCHK
       
                   Sm   6a   Ht   Is   Kb   Kg   Ma   Ny   Oh   On   Kv   Sv   Vm   Wz   Zc  Avg  
 % obs. time:      67   39   73   74   63   76   76   81   40   78   81   52   83   69   50   67
 % cal. time:       2    2    2    3    3    3    2    2    1    3    3    3    2    4    3    3
 % slew time:      25   21   11    5   28    7   18   10    4   14   12   40    9   11   41   18
 % idle time:       5   37   13   16    6   13    3    6   54    3    3    4    5   16    5   13
 total # scans:   173  165  201  292  260  270  203  198   85  246  246  291  205  348  283  231
 # scans/hour :     7    7    8   12   11   11    8    8    4   10   10   12    9   15   12   10
 Avg scan (sec):  333  203  312  219  208  241  325  352  405  275  283  155  347  170  152  264
 # Mk5 tracks:     16   16   16   16   16   16   16   16   16   16   16   16   16   16   16
 Total TB(M5):   0.92 0.54 1.00 1.02 0.86 1.04 1.05 1.12 0.55 1.08 1.11 0.72 1.14 0.95 0.69 0.92

      # OF OBSERVATIONS BY BASELINE 
  |  Sm   6a   Ht   Is   Kb   Kg   Ma   Ny   Oh   On   Kv   Sv   Vm   Wz   Zc  Total   
-------------------------------------------------------------------------------------
Sm|       97  119  108  108  109  144  120   41  137  110  148  105  151  157    1654      
6a|           101   77   76   75  118   98   40  127   78  133   73  154  126    1373      
Ht|                 95   92   96  136  102   67  130   97  141   85  173  146    1580      
Is|                     256  260  108  137    7  131  231  132  196  136  126    2000      
Kb|                          231  108  133    6  127  209  130  182  127  123    1908      
Kg|                               108  141    5  130  221  130  193  129  126    1954      
Ma|                                    130   53  167  111  169  107  187  161    1807      
Ny|                                          23  163  140  156  135  157  135    1770      
Oh|                                               43    4   46    2   69   49     455      
On|                                                   132  194  127  225  168    2001      
Kv|                                                        135  184  128  128    1908      
Sv|                                                             127  262  247    2150      
Vm|                                                                  113  117    1746      
Wz|                                                                       243    2254      
Zc|                                                                              2052      
 Number of  3-station scans:  148
 Number of  4-station scans:   69
 Number of  5-station scans:   59
 Number of  6-station scans:   46
 Number of  7-station scans:   37
 Number of  8-station scans:   23
 Number of  9-station scans:   17
 Number of 10-station scans:   18
 Number of 11-station scans:   11
 Number of 12-station scans:   24
 Number of 13-station scans:   46
 Number of 14-station scans:   28
Total number of scans:          526
Total number of obs:          13306
Total integrated obs-time:  3176703
Average obs-time:             238.7
===========================================================
Recording mode
  Name  Code 
EUR2-SX  SX
Recording mode for: CRIMEA   HART15M  ISHIOKA  KOGANEI  MATERA   NYALES20 SEJONG   SVETLOE  VERAMZSW 
                    WETTZELL ZELENCHK 
  Mode      Tot.Rate    Tot.BandW   #BBC #bits  Barrel
 Mk341:1    128 Mbits     64 MHz     14     1     NONE
  Chan.BW  #Subpasses  Tracks(*fan)  Tot.tracks 
  4.00 MHz      1         16(*1)        16
  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 1-bit channels recorded per sub-pass
           X        S      Total
         10.00     6.00    16.00
Recording mode for: DSS65A   KASHIM34 OHIGGINS ONSALA60 
  Mode      Tot.Rate    Tot.BandW   #BBC #bits  Barrel
 Mk341:2    128 Mbits     64 MHz     14     1     NONE
  Chan.BW  #Subpasses  Tracks(*fan)  Tot.tracks 
  4.00 MHz      1         16(*2)        32
  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 1-bit channels recorded per sub-pass
           X        S      Total
         10.00     6.00    16.00
===========================================================




































Session Notes for session: t2129
===========================================================
 Experiment: T2129                       Description IVS-T2129
 Scheduler:  BONN/Vienna                 Correlator: BONN      
 Start:      2018-352-17:30:00           End:        2018-353-17:30:00
 Current yyyyddd:    2018352 (2018.96)  ( 18471 MJD, TUES 18DEC.)
===========================================================
First observations
Observation listing from file t2129.skd  for experiment T2129   
Source      Start      DURATIONS                                                   
name     yyddd-hhmmss   Sm  6a  Ht  Is  Kb  Kg  Ma  Ny  Oh  On  Kv  Sv  Vm  Wz  Zc  
1055+018 18352-173000|             111  30 111                  99     100        |  
CTA102   18352-173000| 378     200             561 585 585 568     394     217 129|  
2234+282 18352-191346|     119                     132     132      94      39 100|  
Last observations
2134+00  18353-170653| 700                     700 411 700 407     217         216|  
0727-115 18353-170836|              30 108  39                 108                |  
0723-008 18353-171115|             169  90 169                 152      55        |  
2227-088 18353-171145|         108                                  54     108  43|  
0235+164 18353-171448|         700 700 700 700     700     700 700 700 700 700 700|  
===========================================================

 Average number of obs. per baseline per source(normalized by up-time) =   8.4
 Min =    0.0  Max =   90.0 (Baseline Oh-Kv on NRAO530 )   RMS =   8.4
 Total time:       1437 minutes (  24.0 hours).
 Key:     Sm=CRIMEA     6a=DSS65A     Ht=HART15M    Is=ISHIOKA    Kb=KASHIM34
          Kg=KOGANEI    Ma=MATERA     Ny=NYALES20   Oh=OHIGGINS   On=ONSALA60
          Kv=SEJONG     Sv=SVETLOE    Vm=VERAMZSW   Wz=WETTZELL   Zc=ZELENCHK
       
                   Sm   6a   Ht   Is   Kb   Kg   Ma   Ny   Oh   On   Kv   Sv   Vm   Wz   Zc  Avg  
 % obs. time:      67   39   73   74   63   76   76   81   40   78   81   52   83   69   50   67
 % cal. time:       2    2    2    3    3    3    2    2    1    3    3    3    2    4    3    3
 % slew time:      25   21   11    5   28    7   18   10    4   14   12   40    9   11   41   18
 % idle time:       5   37   13   16    6   13    3    6   54    3    3    4    5   16    5   13
 total # scans:   173  165  201  292  260  270  203  198   85  246  246  291  205  348  283  231
 # scans/hour :     7    7    8   12   11   11    8    8    4   10   10   12    9   15   12   10
 Avg scan (sec):  333  203  312  219  208  241  325  352  405  275  283  155  347  170  152  264
 # Mk5 tracks:     16   16   16   16   16   16   16   16   16   16   16   16   16   16   16
 Total TB(M5):   0.92 0.54 1.00 1.02 0.86 1.04 1.05 1.12 0.55 1.08 1.11 0.72 1.14 0.95 0.69 0.92

      # OF OBSERVATIONS BY BASELINE 
  |  Sm   6a   Ht   Is   Kb   Kg   Ma   Ny   Oh   On   Kv   Sv   Vm   Wz   Zc  Total   
-------------------------------------------------------------------------------------
Sm|       97  119  108  108  109  144  120   41  137  110  148  105  151  157    1654      
6a|           101   77   76   75  118   98   40  127   78  133   73  154  126    1373      
Ht|                 95   92   96  136  102   67  130   97  141   85  173  146    1580      
Is|                     256  260  108  137    7  131  231  132  196  136  126    2000      
Kb|                          231  108  133    6  127  209  130  182  127  123    1908      
Kg|                               108  141    5  130  221  130  193  129  126    1954      
Ma|                                    130   53  167  111  169  107  187  161    1807      
Ny|                                          23  163  140  156  135  157  135    1770      
Oh|                                               43    4   46    2   69   49     455      
On|                                                   132  194  127  225  168    2001      
Kv|                                                        135  184  128  128    1908      
Sv|                                                             127  262  247    2150      
Vm|                                                                  113  117    1746      
Wz|                                                                       243    2254      
Zc|                                                                              2052      
 Number of  3-station scans:  148
 Number of  4-station scans:   69
 Number of  5-station scans:   59
 Number of  6-station scans:   46
 Number of  7-station scans:   37
 Number of  8-station scans:   23
 Number of  9-station scans:   17
 Number of 10-station scans:   18
 Number of 11-station scans:   11
 Number of 12-station scans:   24
 Number of 13-station scans:   46
 Number of 14-station scans:   28
Total number of scans:          526
Total number of obs:          13306
Total integrated obs-time:  3176703
Average obs-time:             238.7
Histogram of observation durations
===========================================================
Recording mode
  Name  Code 
EUR2-SX  SX
Recording mode for: CRIMEA   HART15M  ISHIOKA  KOGANEI  MATERA   NYALES20 SEJONG   SVETLOE  VERAMZSW 
                    WETTZELL ZELENCHK 
  Mode      Tot.Rate    Tot.BandW   #BBC #bits  Barrel
 Mk341:1    128 Mbits     64 MHz     14     1     NONE
  Chan.BW  #Subpasses  Tracks(*fan)  Tot.tracks 
  4.00 MHz      1         16(*1)        16
  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 1-bit channels recorded per sub-pass
           X        S      Total
         10.00     6.00    16.00
Recording mode for: DSS65A   KASHIM34 OHIGGINS ONSALA60 
  Mode      Tot.Rate    Tot.BandW   #BBC #bits  Barrel
 Mk341:2    128 Mbits     64 MHz     14     1     NONE
  Chan.BW  #Subpasses  Tracks(*fan)  Tot.tracks 
  4.00 MHz      1         16(*2)        32
  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 1-bit channels recorded per sub-pass
           X        S      Total
         10.00     6.00    16.00
===========================================================