Title :
Estimation of FM modulation of multi-component signals from the Fourier phase
Author :
Nelson, Douglas J.
Author_Institution :
Department of Defence, Fort George G. Meade, MD, USA
Abstract :
The spectral phase is a quantity which is normally discarded in analyzing signals. The concept of a complex time-frequency representation is presented in which the rows are narrow bandpass filters and the columns are broadband Fourier spectra. Methods are developed which exploit the spectral phase of the surface to recover the FM modulating function of an FM modulated tone and an FM modulated multi-component harmonic signal
Keywords :
Fourier analysis; band-pass filters; frequency modulation; harmonic analysis; signal representation; spectral analysis; time-frequency analysis; FM modulated tone; FM modulation estimation; Fourier phase; broadband Fourier spectra; columns; complex time-frequency representation; modulating function recovery; multi-component harmonic signal; multi-component signals; narrow bandpass filters; rows; signal analysis; spectral phase; Fourier transforms; Frequency estimation; Frequency modulation; Narrowband; Periodic structures; Phase estimation; Phase modulation; Power harmonic filters; Signal analysis; Time frequency analysis;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.679600
