Saturday, 16 May 2015

fft - Determine Frequency Content of Variable Rate Signal (Non Uniform Sampling of Signal)



What is the proper way to calculate the frequency content or spectrum of a signal with a variable (but measured) sample rate? I.e. get similar results as you would from an FFT, but for data not evenly spaced in time.


I know I can resample the data by interpolating on an evenly-spaced time vector then apply a FFT, but this seems less than ideal.




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