Title :
An iterative algorithm for estimation of linear frequency modulated signal parameters
Author :
De Luigi, Christophe ; Mor, Eric
Author_Institution :
SIS, ISITV, La Valette Du Var, France
fDate :
4/1/2002 12:00:00 AM
Abstract :
We consider the problem of estimation of a nonstationary signal. The time-frequency characteristics and, more precisely, the instantaneous frequency (IF) of such a signal can be highlighted by the Wigner-Ville transform (WVT). Using the properties of the cross WVT, we develop an iterative algorithm taking into consideration the presence of wrong frequencies in the estimated IF sequence of the signal. Finally, computer simulations are performed in order to illustrate the behavior of this iterative scheme.
Keywords :
frequency modulation; iterative methods; parameter estimation; signal processing; time-frequency analysis; transforms; LFM; Wigner-Ville transform; computer simulations; cross WVT; instantaneous frequency; iterative algorithm; linear FM signal parameter estimation; linear frequency modulated signal parameter estimation; nonstationary signal estimation; time-frequency characteristics; Additive noise; Chirp modulation; Frequency estimation; Frequency modulation; Iterative algorithms; Noise level; Parameter estimation; Polynomials; Radar; Yield estimation;
Journal_Title :
Signal Processing Letters, IEEE
