[evlatests] A few more tidbits ...

Rick Perley rperley at nrao.edu
Thu Feb 4 19:28:49 EST 2010


    Examination of the antenna gain solutions shows:

    1) In general, stability is excellent.  Fluctuations (of 1-second 
solutions) about the mean is typically 0.1%. 
    2) Some clear periodicities are noted:  More egregious examples are 
(all are at the few tenths of 1% amplitude):
       Antenna 4:  periodicity of ~2 seconds
       Antenna 7RCP:  15 seconds
       Antenna 7 LCP: A 'square wave' like pattern of about 1minute period.
       Antenna 2, both polarizations:  8 second period  (0.5% amplitude). 
    3) All phase solutions look completely consistent with atmospheric 
effects. 

 



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