Microwave imaging using a novel regularization scheme

Author

Meyer, T. ; Jostingmeier, A. ; Omar, A.S.

Author_Institution

Univ. of Magdeburg, Germany

Volume

3

fYear

2003

fDate

22-27 June 2003

Firstpage

175

Abstract

A new approach to microwave imaging is presented in this paper. Based on the representation of the object in terms of space harmonics it is possible to formulate a smoothness constraint without use of the method of employing additional cost functions as in known regularization schemes. Using this approach, an iterative microwave imaging method is presented which is capable of quantitatively imaging high-contrast and lossy objects from scattering parameter measurements of a cavity loaded with the object. Numerical examples and comparison with measurements of prototypes show excellent accuracy.

Keywords

S-parameters; cavity resonators; finite difference time-domain analysis; image representation; iterative methods; least squares approximations; microwave imaging; tomography; FDTD; high-contrast objects; iterative microwave imaging method; least-squares algorithm; lossy objects; microwave imaging; microwave resonator tomography; object loaded multiport cavity; object space harmonics representation; regularization scheme; scattering parameter measurements; smoothness constraint; Image converters; Inverse problems; Iterative algorithms; Microwave imaging; Microwave measurements; Microwave theory and techniques; Optical imaging; Scattering parameters; Tomography; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2003. IEEE

Conference_Location

Columbus, OH, USA

Print_ISBN

0-7803-7846-6

Type

conf

DOI

10.1109/APS.2003.1219817

Filename

1219817