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Open AccessFeature PaperArticle

Performance Evaluation of Group Sparse Reconstruction and Total Variation Minimization for Target Imaging in Stratified Subsurface Media

1
Department of Electrical and Computer Engineering, Temple University, Philadelphia, PA 19122, USA
2
Antenna Research Lab, College of Engineering, Villanova University, Villanova, PA 19085, USA
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(11), 1245; https://doi.org/10.3390/electronics8111245
Received: 23 September 2019 / Revised: 24 October 2019 / Accepted: 26 October 2019 / Published: 30 October 2019
(This article belongs to the Special Issue Microwave Imaging and Its Application)
Sparse reconstruction methods have been successfully applied for efficient radar imaging of targets embedded in stratified dielectric subsurface media. Recently, a total variation minimization (TVM) based approach was shown to provide superior image reconstruction performance over standard L1-norm minimization-based method, especially in case of non-point-like targets. Alternatively, group sparse reconstruction (GSR) schemes can also be employed to account for embedded target extent. In this paper, we provide qualitative and quantitative performance evaluations of TVM and GSR schemes for efficient and reliable target imaging in stratified subsurface media. Using numerical electromagnetic data of targets buried in the ground, we demonstrate that GSR and TVM provide comparable reconstruction performance qualitatively, with GSR exhibiting a slight superiority over TVM quantitatively, albeit at the expense of less flexibility in regularization parameters. View Full-Text
Keywords: microwave imaging; ground penetrating radar; group sparsity; total variation minimization microwave imaging; ground penetrating radar; group sparsity; total variation minimization
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MDPI and ACS Style

Ahmad, F.; Hoorfar, A.; Zhang, W. Performance Evaluation of Group Sparse Reconstruction and Total Variation Minimization for Target Imaging in Stratified Subsurface Media. Electronics 2019, 8, 1245.

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