Recognition of nonlinear dispersive scattering in SAR imagery

Author

El-Darymli, Khalid ; Moloney, Cecilia ; Gill, Eric ; Mcguire, Peter ; Power, Desmond

Author_Institution

Fac. of Eng. & Appl. Sci., Memorial Univ., St. John´s, NL, Canada

fYear

2014

fDate

13-18 July 2014

Firstpage

4722

Lastpage

4725

Abstract

This paper presents a new insight into the nonlinear dynamics in SAR imagery. For extended targets, the conventional radar resolution theory is violated due to the nonlinear phase modulation induced by the dispersive scatterers. A novel algorithm motivated by the Hilbert view for the nonlinear phenomenon is introduced. Our algorithm may be used to not only detect the dispersive scatterers but also to estimate the nonlinear order of the phase modulation. Our results are demonstrated on a representative real-world target chip.

Keywords

radar imaging; remote sensing by radar; synthetic aperture radar; Hilbert view; SAR imagery; dispersive scatterers; nonlinear dispersive scattering recognition; nonlinear dynamics; nonlinear phase modulation; nonlinear phenomenon; phase modulation nonlinear order; radar resolution theory; real-world target chip; Dispersion; Nonlinear dynamical systems; Radar imaging; Scattering; Synthetic aperture radar; Transforms; Hilbert-Huang transform; SAR; extended target; nonlinear;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2014 IEEE International

Conference_Location

Quebec City, QC

Type

conf

DOI

10.1109/IGARSS.2014.6947548

Filename

6947548