Title :
Microwave imaging using a novel regularization scheme
Author :
Meyer, T. ; Jostingmeier, A. ; Omar, A.S.
Author_Institution :
Univ. of Magdeburg, Germany
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219817
