Microwave inverse scattering - local shape function imaging for improved resolution of strong scatterers

Author

Otto, Gregory P. ; Chew, Weng Cho

Author_Institution

Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA

Volume

42

Issue

1

fYear

1994

fDate

1/1/1994 12:00:00 AM

Firstpage

137

Lastpage

141

Abstract

Local shape function imaging uses far-field microwave scattering data to reconstruct the presence or absence of small metal cylinders throughout space, in order to model arbitrary metallic objects. The reconstructed images represent the scattering amplitude at discrete locations in space with multiple scattering effects incorporated. Super-resolution is demonstrated for monochromatic image reconstructions. Even better reconstructions are obtained with multiple frequency data. The speed of computation is increased with a fast forward solver algorithm. Also, measured data is used in the local shape function imaging algorithm and the resolution is improved over diffraction tomography

Keywords

computational complexity; electromagnetic wave scattering; image reconstruction; inverse problems; microwave imaging; far-field microwave scattering data; fast forward solver algorithm; imaging algorithm; local shape function imaging; microwave inverse scattering; monochromatic image reconstructions; multiple frequency data; multiple scattering effects; reconstructed images; resolution improvement; scattering amplitude; small metal cylinders; strong scatterers; superresolution; Diffraction; Electromagnetic scattering; Engine cylinders; Frequency; Image reconstruction; Image resolution; Inverse problems; Microwave imaging; Shape measurement; Tomography;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.265541

Filename

265541