Title :
The interpolated fast Fourier transform: a comparative study
Author :
Schoukens, J. ; Pintelon, R. ; Van Kamme, H.
Author_Institution :
Dept. of Electron., Vrije Univ., Brussels, Belgium
Abstract :
The properties of five interpolating fast Fourier transform methods (IFFT) are studied with respect to their systematic errors and their noise sensitivity, for a monofrequency signal. It is shown that windows with small spectral sidelobes do not always result in a better overall performance of the IFFT and that time-domain estimators can be more efficient than the IFFT methods analyzed. It is also, shown that time-domain techniques have a lower Cramer-Rao lower bound than the IFFT methods, which can result in more efficient estimates
Keywords :
fast Fourier transforms; interpolation; parameter estimation; signal processing; spectral analysis; Cramer-Rao lower bound; interpolated fast Fourier transform; monofrequency signal; noise sensitivity; spectral sidelobes; systematic errors; time-domain estimators; time-domain techniques; Discrete Fourier transforms; Fast Fourier transforms; Frequency domain analysis; Frequency estimation; Frequency measurement; Performance analysis; Signal analysis; Spectral analysis; Time domain analysis; Time measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1991. IMTC-91. Conference Record., 8th IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-87942-579-2
DOI :
10.1109/IMTC.1991.161614
