Improved GPR image quality by truncating the bandwidth of the Fourier Transform in 2D diffraction tomographic inversion
Lum, Sebastian, Tang, Tee G., & Lyall, James S. (2008) Improved GPR image quality by truncating the bandwidth of the Fourier Transform in 2D diffraction tomographic inversion. In IEEE International RF and Microwave Conference, 2-4 December 2008, Kuala Lumpur, Malaysia.
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Abstract
Diffraction tomography (DT) has been
applied in ground penetrating radar (GPR) to obtain
images of buried objects. In order to obtain a unique
solution for the object function, a maximum frequency
range should be used in a DT inversion routine. In this
paper, a method is proposed to appropriately truncate
the frequency range of the Fourier-transformed (FT)
scattered field for a 2D DT inversion routine. This is
achieved by determining the variation of the phase in
the FT scattered field. The number of zero-crossings of
the FT phase along the spatial axis is counted and a
moving-average filter is applied to enable proper
bandwidth selection. Numerical simulations are
demonstrated using synthetic data with additive white
Gaussian noise.
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| ID Code: | 18017 |
|---|---|
| Item Type: | Conference Paper |
| Keywords: | Diffraction Tomography, Fourier Transform, Ground Penetrating Radar |
| Subjects: | Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > GEOMATIC ENGINEERING (090900) |
| Divisions: | Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering Past > Schools > School of Engineering Systems |
| Copyright Owner: | Copyright 2008 IEEE |
| Copyright Statement: | Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. |
| Deposited On: | 18 Feb 2009 16:22 |
| Last Modified: | 09 Jun 2010 23:24 |
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