Wide-Angle Synthetic Aperture Radar Imaging: Models and algorithms for anisotropic scattering

Author

Ash, Joshua N. ; Ertin, Emre ; Potter, Lee C. ; Zelnio, Edmund G.

Volume

31

Issue

4

fYear

2014

fDate

Jul-14

Firstpage

16

Lastpage

26

Abstract

Advances in radar hardware have enabled the sensing of ever-wider synthesized apertures. In this article, radar video - a sequence of radar images indexed on subaperture - is discussed as a natural, convenient, and revealing representation to capture wide-angle scattering behavior of complex objects. We review the inverse problem of recovering wide-angle scene reflectivity from synthetic aperture radar (SAR) measurements, survey signal processing approaches for its solution, and introduce a novel Bayesian estimation method. Examples from measured and simulated scattering data are presented to illustrate scattering behavior conveniently revealed by the SAR video framework.

Keywords

image representation; image sequences; inverse problems; radar imaging; synthetic aperture radar; Bayesian estimation method; SAR video framework; anisotropic scattering; inverse problem; radar image sequence; radar video; signal processing approach; wide-angle scattering behavior; wide-angle scene reflectivity; wide-angle synthetic aperture radar imaging; Frequency measurement; Image processing; Radar imaging; Scattering; Synthetic aperture radar; Tutorials;

fLanguage

English

Journal_Title

Signal Processing Magazine, IEEE

Publisher

ieee

ISSN

1053-5888

Type

jour

DOI

10.1109/MSP.2014.2311828

Filename

6832831