Changes between Version 24 and Version 25 of Changes/atlod


Ignore:
Timestamp:
03/06/07 12:02:12 (17 years ago)
Author:
mci156
Comment:

--

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  • Changes/atlod

    v24 v25  
    3232
    3333 ApplyingXYPhaseCorrections::
    34    At present atlod applies the XYPhase during filling. Nothing else (except maybe atxy) uses them.
    35    So we can compute the corrections, apply them and drop the XYPhase information, during ATLOD?
    36    May need to order the RPFITS data stream so that autocorrelations come before cross-correlations
    37    (and after SYSCAL records), so that the corrections for the cross-correlation can be computed
    38    before reaching the cross-correlations.
    39    We will need to carry Tsys info along but may be able to do it more compactly than storing the autocorrelations themselves.
    40 
    41    Research required: The phase values computed on a per channel basis will be noisy, and applying them will just introduce noise.
    42    We need to understand how much smoothing across frequency will be needed.
    43    Need to do some experiments to understand the sequence of events in reading in a file.
     34  At present atlod applies the XYPhase during filling. Nothing else (except maybe atxy) uses them.
     35  So we can compute the corrections, apply them and drop the XYPhase information, during ATLOD?
     36  May need to order the RPFITS data stream so that autocorrelations come before cross-correlations
     37  (and after SYSCAL records), so that the corrections for the cross-correlation can be computed
     38  before reaching the cross-correlations.
     39  We will need to carry Tsys info along but may be able to do it more compactly than storing the autocorrelations themselves.
     40  [BR]
     41  Research required: The phase values computed on a per channel basis will be noisy, and applying them will just introduce noise.
     42  We need to understand how much smoothing across frequency will be needed.
     43  Need to do some experiments to understand the sequence of events in reading in a file.
    4444
    4545 == DataSizeLimits ==