Three-dimensional dielectric imaging by microwave inverse scattering with resolution unlimited by wavelength
- 13 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
An inverse scattering formulation for retrieving three-dimensional profiles of dielectric permittivity is presented. It yields quantitative dielectric images of a target, with resolution limited only by signal-to-noise ratio, and not by wavelength or diffraction. To overcome the wavelength limitation, scattering data in the near zone are utilized, and a method of least-mean-square and singular value decomposition is used to stabilize the matrix inversion. Results from computer simulation with an electrostatic model are shown to provide good images. As the electrostatic field is equivalent to an electrodynamic field with infinite wavelength, it illustrates the possibility of imaging by inverse scattering with resolution unlimited by wavelength Author(s) Guo, Wendy W. Potomac Res. Inc., MD, USA Guo, Theodore C.Keywords
This publication has 9 references indexed in Scilit:
- Computation of electromagnetic wave scattering from an arbitrary three-dimensional inhomogeneous dielectric objectIEEE Transactions on Magnetics, 1989
- Equivalent current density reconstruction for microwave imaging purposesIEEE Transactions on Microwave Theory and Techniques, 1989
- Frequency-swept microwave imaging of dielectric objectsIEEE Transactions on Microwave Theory and Techniques, 1988
- Polarization effects on microwave imaging of dielectric cylinderIEEE Transactions on Microwave Theory and Techniques, 1988
- Physics Of Image Formation By Microwave ScatteringPublished by SPIE-Intl Soc Optical Eng ,1987
- Electromagnetic Modeling for Microwave Imaging of Cylindrical Buried InhomogeneitiesIEEE Transactions on Microwave Theory and Techniques, 1986
- Active microwave tomographic imaging of isolated, perfused animal organsBioelectromagnetics, 1985
- A Local Field Study of a Water-Immersed Microwave Antenna Array for Medical Imagery and TherapyIEEE Transactions on Microwave Theory and Techniques, 1984
- Microwave Diffraction Tomography for Biomedical ApplicationsIEEE Transactions on Microwave Theory and Techniques, 1982