Difference between revisions of "Dictionary:Correlation ghost"

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Nonlinearities in generating a vibroseis signal introduce second harmonics. The correlation of reflected second harmonics with the generated frequency produces correlation ghosts that follow the signal for a downsweep but anticipate it for an upsweep.
 
Nonlinearities in generating a vibroseis signal introduce second harmonics. The correlation of reflected second harmonics with the generated frequency produces correlation ghosts that follow the signal for a downsweep but anticipate it for an upsweep.
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Revision as of 18:24, 10 April 2017

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Nonlinearities in generating a vibroseis signal introduce second harmonics. The correlation of reflected second harmonics with the generated frequency produces correlation ghosts that follow the signal for a downsweep but anticipate it for an upsweep.