Title :
A comparison of spectrum estimation techniques for periodic not stationary signals
Author :
Aiello, M. ; Cataliotti, A. ; Nuccio, S.
Author_Institution :
Dipt. di Ingegneria Elettrica, Univ. degli Studi di Palermo, Italy
Abstract :
This paper compares different spectrum estimation techniques. The aim is to determine which is the most suitable to analyze a signal´s spectral harmonic content in a very close frequency band in the case of periodic non-stationary signals. A test signal and performance parameters have been defined. Experimental tests have been carried on different spectrum estimation techniques in order to define their behavior in detecting harmonic frequencies of periodic non-stationary signals. The result is that the chirp-Z transform is well suited for a restricted range spectral analysis of a non-stationary signal
Keywords :
Z transforms; fast Fourier transforms; maximum entropy methods; parameter estimation; signal classification; spectral analysis; FFT; chirp-Z transform; performance parameters; periodic nonstationary signals; restricted range spectral analysis; spectral harmonic content; spectrum estimation techniques; test signal; Chirp; Fast Fourier transforms; Frequency; Harmonic analysis; Sampling methods; Signal analysis; Signal resolution; Spectral analysis; Testing; Velocity measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE
Conference_Location :
Budapest
Print_ISBN :
0-7803-6646-8
DOI :
10.1109/IMTC.2001.928255
