A Simple Approach for Estimating the Effective Electric Parameters of 2-D Targets

Mehmet Nuri Akinci; Mehmet Çayören; Ibrahim Akduman; Lorenzo Crocco

doi:10.1109/TAP.2018.2794356

A Simple Approach for Estimating the Effective Electric Parameters of 2-D Targets

Mehmet Nuri Akinci^*, Mehmet Çayören, Ibrahim Akduman, Lorenzo Crocco

^*Corresponding author for this work

Department of Electronics and Communication Engineering

National Research Council of Italy

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

In this paper, we introduce a simple, noniterative algorithm to estimate the effective dielectric properties of unknown targets from the measurements of their backscattered fields. The proposed approach relies on the virtual experiments concept, as it exploits a combination of the incident fields to be able to focus the exciting field on a certain region. Then, it associates the effective parameters to the permittivity and conductivity values that minimize the mean square error between the virtual scattered field (obtained by recombining the measured data) and the field scattered by a homogeneous dielectric cylinder centered on the target, having approximately the same area. The center of this effective scatterer and its radius can be estimated with a qualitative imaging algorithm or can be given as a priori information. Notably, by properly designing the virtual incident fields, the proposed method can easily handle the case of multiple targets. The effectiveness of the method is assessed by both numerical and experimental examples.

Original language	English
Pages (from-to)	2026-2034
Number of pages	9
Journal	IEEE Transactions on Antennas and Propagation
Volume	66
Issue number	4
DOIs	https://doi.org/10.1109/TAP.2018.2794356
Publication status	Published - Apr 2018

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

Funding

Manuscript received November 3, 2016; revised October 31, 2017; accepted December 30, 2017. Date of publication January 16, 2018; date of current version April 5, 2018. This work was supported in part by the Turkish Scientific and Research Council under Project 113E977 and in part by the European Cooperation in Science and Technology (COST) Action TD1301, MiMed—Development of a European-based Collaborative Network to Accelerate Technological, Clinical and Commercialisation Progress in the area of medical microwave imaging. (Corresponding author: Mehmet Nuri Akıncı.) M. N. Akıncı, M. Çayören, and ˙. Akduman are with the Electrical and Electronics Engineering Faculty, Istanbul Technical University, 34469 Istanbul, Turkey (e-mail: [email protected]).

Funders	Funder number
Turkish Scientific and Research Council	113E977
European Cooperation in Science and Technology	TD1301

Keywords

Linear sampling method (LSM)
object-based inversion
orthogonality sampling method (OSM)
qualitative microwave imaging (MWI)
virtual experiments

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10.1109/TAP.2018.2794356

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abstract = "In this paper, we introduce a simple, noniterative algorithm to estimate the effective dielectric properties of unknown targets from the measurements of their backscattered fields. The proposed approach relies on the virtual experiments concept, as it exploits a combination of the incident fields to be able to focus the exciting field on a certain region. Then, it associates the effective parameters to the permittivity and conductivity values that minimize the mean square error between the virtual scattered field (obtained by recombining the measured data) and the field scattered by a homogeneous dielectric cylinder centered on the target, having approximately the same area. The center of this effective scatterer and its radius can be estimated with a qualitative imaging algorithm or can be given as a priori information. Notably, by properly designing the virtual incident fields, the proposed method can easily handle the case of multiple targets. The effectiveness of the method is assessed by both numerical and experimental examples.",

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A Simple Approach for Estimating the Effective Electric Parameters of 2-D Targets

Abstract

Bibliographical note

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Keywords

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