Utilization of multiple frequencies in 3D nonlinear microwave imaging

Peter Damsgaard Jensen; Tonny Rubæk; Johan Jacob Mohr

doi:10.1109/EuCAP.2012.6206271

Utilization of multiple frequencies in 3D nonlinear microwave imaging

Peter Damsgaard Jensen, Tonny Rubæk, Johan Jacob Mohr

Chalmers University of Technology

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

The use of multiple frequencies in a nonlinear microwave algorithm is considered. Using multiple frequencies allows for obtaining the improved resolution available at the higher frequencies while retaining the regularizing effects of the lower frequencies. However, a number of different challenges arise when using data from multiple frequencies for imaging of biological targets. In this paper, the performance of a multi-frequency algorithm, in which measurement data from several different frequencies are used at once, is compared with a stepped-frequency algorithm, in which images reconstructed at lower frequencies are used as starting guesses for reconstructions at higher frequencies. The performance is illustrated using simulated 2-D data and data obtained with the 3-D DTU microwave imaging system.

Original language	English
Title of host publication	2012 6th European Conference on Antennas and Propagation
Publisher	IEEE
Publication date	2012
Pages	1776 - 1779
ISBN (Print)	978-1-4577-0918-0
ISBN (Electronic)	978-1-4577-0919-7
DOIs	https://doi.org/10.1109/EuCAP.2012.6206271
Publication status	Published - 2012
Event	2012 6th European Conference on Antennas and Propagation - Prague, Czech Republic Duration: 26 Mar 2012 → 30 Mar 2012

Conference

Conference	2012 6th European Conference on Antennas and Propagation
Country/Territory	Czech Republic
City	Prague
Period	26/03/2012 → 30/03/2012

Keywords

Image reconstruction
Microwave antennas
Microwave imaging
Microwave measurements
Microwave theory and techniques
Permittivity

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10.1109/EuCAP.2012.6206271

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title = "Utilization of multiple frequencies in 3D nonlinear microwave imaging",

abstract = "The use of multiple frequencies in a nonlinear microwave algorithm is considered. Using multiple frequencies allows for obtaining the improved resolution available at the higher frequencies while retaining the regularizing effects of the lower frequencies. However, a number of different challenges arise when using data from multiple frequencies for imaging of biological targets. In this paper, the performance of a multi-frequency algorithm, in which measurement data from several different frequencies are used at once, is compared with a stepped-frequency algorithm, in which images reconstructed at lower frequencies are used as starting guesses for reconstructions at higher frequencies. The performance is illustrated using simulated 2-D data and data obtained with the 3-D DTU microwave imaging system.",

keywords = "Image reconstruction, Microwave antennas, Microwave imaging , Microwave measurements, Microwave theory and techniques , Permittivity ",

author = "Jensen, {Peter Damsgaard} and Tonny Rub{\ae}k and Mohr, {Johan Jacob}",

year = "2012",

doi = "10.1109/EuCAP.2012.6206271",

language = "English",

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booktitle = "2012 6th European Conference on Antennas and Propagation",

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note = "2012 6th European Conference on Antennas and Propagation, EuCAP 2012 ; Conference date: 26-03-2012 Through 30-03-2012",

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AU - Rubæk, Tonny

AU - Mohr, Johan Jacob

PY - 2012

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N2 - The use of multiple frequencies in a nonlinear microwave algorithm is considered. Using multiple frequencies allows for obtaining the improved resolution available at the higher frequencies while retaining the regularizing effects of the lower frequencies. However, a number of different challenges arise when using data from multiple frequencies for imaging of biological targets. In this paper, the performance of a multi-frequency algorithm, in which measurement data from several different frequencies are used at once, is compared with a stepped-frequency algorithm, in which images reconstructed at lower frequencies are used as starting guesses for reconstructions at higher frequencies. The performance is illustrated using simulated 2-D data and data obtained with the 3-D DTU microwave imaging system.

AB - The use of multiple frequencies in a nonlinear microwave algorithm is considered. Using multiple frequencies allows for obtaining the improved resolution available at the higher frequencies while retaining the regularizing effects of the lower frequencies. However, a number of different challenges arise when using data from multiple frequencies for imaging of biological targets. In this paper, the performance of a multi-frequency algorithm, in which measurement data from several different frequencies are used at once, is compared with a stepped-frequency algorithm, in which images reconstructed at lower frequencies are used as starting guesses for reconstructions at higher frequencies. The performance is illustrated using simulated 2-D data and data obtained with the 3-D DTU microwave imaging system.

KW - Image reconstruction

KW - Microwave antennas

KW - Microwave imaging

KW - Microwave measurements

KW - Microwave theory and techniques

KW - Permittivity

U2 - 10.1109/EuCAP.2012.6206271

DO - 10.1109/EuCAP.2012.6206271

M3 - Article in proceedings

SN - 978-1-4577-0918-0

SP - 1776

EP - 1779

BT - 2012 6th European Conference on Antennas and Propagation

PB - IEEE

T2 - 2012 6th European Conference on Antennas and Propagation

Y2 - 26 March 2012 through 30 March 2012

ER -

Utilization of multiple frequencies in 3D nonlinear microwave imaging

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Keywords

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