High resolution 3D microwave and millimeter wave imaging

Author

Rajesh Koganti

Keywords and Phrases

Newton Kantorovich method; Tikhonov regularization

Abstract

"Microwave imaging can be applied to many different applications including industrial, scientific and medical areas. There has been considerable interest in microwave imaging for more than two decades to complement other existing imaging modalities and this interest follows from the sensitivity of microwaves to the electrical properties of matter. The goal of this investigation is to develop an efficient method for reconstruction of dielectric and conductive property distribution of an arbitrary object based on scattered field measured at several locations. Starting from an integral equation and using the Method-of-Moments, a spatial forward iterative algorithm is used for reconstruction and in this algorithm; regularization and optimization methods are used for stability and convergence. The algorithm used for the iterative reconstruction process is based on a forward formulation which is used for calculating the scattered field at any arbitrary point when a dielectric object (for which the permittivity distribution is to be determined) of arbitrary shape is illuminated by an incident plane electric field from an arbitrary direction. This work focuses on issues including resolution, noise, geometrical configuration of investigation and measurement domains, polarization, etc., as they influence the reconstruction process. The reconstruction of 3D dielectric objects is performed using a multi-illumination and multi-view technique and a significant insight about this technique is visible by comparing the results obtained with this technique to the results obtained by using single-illumination, single-view technique. A discussion of results and future work is also provided"--Abstract, page iii.

Advisor(s)

Zoughi, R.

Committee Member(s)

Stanley, R. Joe
Hubing, Todd H.

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Publisher

University of Missouri--Rolla

Publication Date

Fall 2005

Pagination

ix, 84 pages

Note about bibliography

Includes bibliographical references (pages 77-83).

Rights

© 2005 Rajesh Koganti, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

Microwave imaging
Three-dimensional imaging

Thesis Number

T 8891

Print OCLC #

72521773

Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

Recommended Citation

Koganti, Rajesh, "High resolution 3D microwave and millimeter wave imaging" (2005). Masters Theses. 5850.
https://scholarsmine.mst.edu/masters_theses/5850