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Imaging of buried o...
Imaging of buried objects from experimental backscattering time dependent measurements using a globally convergent inverse algorithm
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- Thành, Nguyen Trung (författare)
- The University of North Carolina at Charlotte,Iowa State University
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- Beilina, Larisa, 1970 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för matematiska vetenskaper, matematik,Department of Mathematical Sciences, Mathematics
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- Klibanov, Michael V. (författare)
- The University of North Carolina at Charlotte
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- Fiddy, Michael A. (författare)
- The University of North Carolina at Charlotte
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(creator_code:org_t)
- Society for Industrial & Applied Mathematics (SIAM), 2015
- 2015
- Engelska.
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Ingår i: SIAM Journal on Imaging Sciences. - : Society for Industrial & Applied Mathematics (SIAM). - 1936-4954. ; 8:1, s. 757-786
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Abstract
Ämnesord
Stäng
- We consider the problem of imaging of objects buried under the ground using experimental back-scattering time-dependent measurements generated by a single point source or one incident plane wave. In particular, we estimate dielectric constants of these objects using the globally convergent inverse algorithm of Beilina and Klibanov. Our algorithm is tested on experimental data collected using a microwave scattering facility at the University of North Carolina at Charlotte. There are two main challenges in working with this type of experimental data: (i) there is a huge misfit between these data and computationally simulated data, and (ii) the signals scattered from the targets may overlap with and be dominated by the reflection from the ground's surface. To overcome these two challenges, we propose new data preprocessing steps to make the experimental data look similar to the simulated data, as well as to remove the reflection from the ground's surface. Results of a total of 25 data sets of both nonblind and blind targets indicate good accuracy.
Ämnesord
- NATURVETENSKAP -- Matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics (hsv//eng)
Nyckelord
- buried object detection
- data preprocessing
- coefficient identification problems
- experimental data
- globally convergent algorithm
- wave equation
- buried object detection; coefficient identification problems; wave equation; globally convergent algorithm; experimental data; data preprocessing
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