New instantaneous frequency estimation method based on image processing techniques

The aim of this paper is to present a new method for the estimation of the instantaneous frequency of a frequency modulated signal, corrupted by additive noise. Any time-frequency representation of an acquired signal is concentrated around the instantaneous frequency law of its useful component (the...

Full description

Saved in:
Bibliographic Details
Published in:Journal of electronic imaging 2005-04, Vol.14 (2), p.023013-0230111
Main Authors: Borda, Monica, Nafornita, Ioan, Isar, Dorina, Isar, Alexandru
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The aim of this paper is to present a new method for the estimation of the instantaneous frequency of a frequency modulated signal, corrupted by additive noise. Any time-frequency representation of an acquired signal is concentrated around the instantaneous frequency law of its useful component (the projection of the ridges of the time-frequency representation on the time-frequency plane) and realizes the diffusion of its noise component. So, extracting the ridges of the time-frequency representation, the instantaneous frequency of its useful component can be estimated. In this paper a new time-frequency representation is proposed. Using the image of this new time-frequency representation, its ridges can be extracted with the aid of some mathematical morphology operators. This is a ridges detection mechanism producing the projection on the time-frequency plane. This projection represents the result of the proposed estimation method. Some simulations prove the qualities of this method. ©
ISSN:1017-9909
1560-229X
DOI:10.1117/1.1901677