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

Volume

9

Issue

4

fYear

2002

fDate

4/1/2002 12:00:00 AM

Firstpage

127

Lastpage

129

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;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/97.1001649

Filename

1001649