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Center frequency estimation of a band limited signal

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saima
saima le 20 Mai 2013
Hello,
I want to determine the center frequency of a band limited signal. It is not possible to determine this frequency by observing the spectrum. Is there any MATLAB routine for this estimation?
-saima
  2 commentaires
Wayne King
Wayne King le 20 Mai 2013
Can you elaborate on why it is not possible to determine this by observing the spectrum?
saima
saima le 20 Mai 2013
Because, in the center region of the band I have a so many peaks

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Bjorn Gustavsson
Bjorn Gustavsson le 20 Mai 2013
Filling in a couple of blanks in your question I get to the guess that you're undersampling your band-limited signal at regular intervalls. For that situation you'll have the zoom-fft method. There are 2 contributions on the matlab central file exchange, just search for 'zoom fft'.
HTH

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