Center frequency estimation of a band limited signal

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saima
saima 2013-5-20
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 个评论
Wayne King
Wayne King 2013-5-20
Can you elaborate on why it is not possible to determine this by observing the spectrum?
saima
saima 2013-5-20
Because, in the center region of the band I have a so many peaks

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回答（1 个）

Bjorn Gustavsson
Bjorn Gustavsson 2013-5-20
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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