Changes between Version 10 and Version 11 of Changes/atlod


Ignore:
Timestamp:
03/06/07 10:47:51 (17 years ago)
Author:
mci156
Comment:

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  • Changes/atlod

    v10 v11  
    1010 ||MoreSelectionOptions || easy || 6 || 5d ||
    1111
    12  SamplerStatistics::
    13   we no longer use these. So we need to avoid checking for them with CABB-type data.
     12 [wiki:SYSCALRecordChanges]::
     13  The SYSCAL records will change from their current form.
     14    SamplerStatistics::
     15      we no longer use these. So we need to avoid checking for them with CABB-type data.
     16    StorageOfSYSCALData::
     17     Now that there are no sampler statistics, we need a different way of carrying along [wiki:Glossary/Tsys Tsys] and 
     18    [wiki:Glossary/XYPhase XYPhase] data than we have at present.
     19    At present there are 24 scalar values of Tsys (6 antennae * 2 polarizations * 2 IFs) written into every integration, and
     20    12 (6 ant. * 2 IFs) of XYPhase.
     21
     22    In the new system there will likely be a spectrum of each, in the form of autocorrelations.
     23    Tsys is formed from the XX and YY polarisations of the autocorrelations, with the noise diode on and off;
     24    XYPhase from the XY (or its conjugate, YX) with the diode on and off.
    1425
    1526 DataSizeLimits::
     
    3849  This requires more selection options than just 'ifsel'.
    3950
    40  StorageOfTsysData::
    41   Now that there are no sampler statistics, we need a different way of carrying along [wiki:Glossary/Tsys Tsys] data
    42   than we have at present. At present there are 24 scalar values (6 antennae * 4 polarizations) written into every integration.
    43   In the new system there will likely be a spectrum (instrumental autocorrelations (XX and YY) both with the noise diode on and off).
    4451
    45  [wiki:SYSCALRecordChanges]::
    46   The SYSCAL records will change from their current form.
    4752
    4853[/trac/miriad4cabb Wiki Home]