Model-Corrected Microwave Imaging through Periodic Wall Structures
A model-based imaging framework is applied to correct the target distortion seen in microwave imaging through a periodic wall structure. In addition to propagation delays caused by the wall, it is shown that the structural periodicity induces high-order space harmonics leading to other ghost artifac...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2012/948365 |
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| _version_ | 1832564162110160896 |
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| author | Paul C. Chang Robert J. Burkholder John L. Volakis |
| author_facet | Paul C. Chang Robert J. Burkholder John L. Volakis |
| author_sort | Paul C. Chang |
| collection | DOAJ |
| description | A model-based imaging framework is applied to correct the target distortion seen in microwave imaging through a periodic wall structure. In addition to propagation delays caused by the wall, it is shown that the structural periodicity induces high-order space harmonics leading to other ghost artifacts in the through-wall image. To overcome these distortions, the periodic layer Green’s function is incorporated into the forward model. A linear back-projection solution and a nonlinear minimization solution are applied to solve the inverse problem. The model-based back-projection image corrects the distortion and has higher resolution compared with free space due to the inclusion of multipath propagation through the periodic wall, but considerable sidelobe clutter is present. The nonlinear solution not only corrects target distortion without clutter but also reduces the solution to a sparse form. |
| format | Article |
| id | doaj-art-f3f012d97af541249ecde2f66b932e1b |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-f3f012d97af541249ecde2f66b932e1b2025-02-03T01:11:43ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772012-01-01201210.1155/2012/948365948365Model-Corrected Microwave Imaging through Periodic Wall StructuresPaul C. Chang0Robert J. Burkholder1John L. Volakis2Science Applications International Corporation, 4031 Colonel Glenn Highway, Beavercreek, OH 45431, USADepartment of Electrical and Computer Engineering, Ohio State University, 2015 Neil Avenue, Columbus, OH 43210, USADepartment of Electrical and Computer Engineering, Ohio State University, 2015 Neil Avenue, Columbus, OH 43210, USAA model-based imaging framework is applied to correct the target distortion seen in microwave imaging through a periodic wall structure. In addition to propagation delays caused by the wall, it is shown that the structural periodicity induces high-order space harmonics leading to other ghost artifacts in the through-wall image. To overcome these distortions, the periodic layer Green’s function is incorporated into the forward model. A linear back-projection solution and a nonlinear minimization solution are applied to solve the inverse problem. The model-based back-projection image corrects the distortion and has higher resolution compared with free space due to the inclusion of multipath propagation through the periodic wall, but considerable sidelobe clutter is present. The nonlinear solution not only corrects target distortion without clutter but also reduces the solution to a sparse form.http://dx.doi.org/10.1155/2012/948365 |
| spellingShingle | Paul C. Chang Robert J. Burkholder John L. Volakis Model-Corrected Microwave Imaging through Periodic Wall Structures International Journal of Antennas and Propagation |
| title | Model-Corrected Microwave Imaging through Periodic Wall Structures |
| title_full | Model-Corrected Microwave Imaging through Periodic Wall Structures |
| title_fullStr | Model-Corrected Microwave Imaging through Periodic Wall Structures |
| title_full_unstemmed | Model-Corrected Microwave Imaging through Periodic Wall Structures |
| title_short | Model-Corrected Microwave Imaging through Periodic Wall Structures |
| title_sort | model corrected microwave imaging through periodic wall structures |
| url | http://dx.doi.org/10.1155/2012/948365 |
| work_keys_str_mv | AT paulcchang modelcorrectedmicrowaveimagingthroughperiodicwallstructures AT robertjburkholder modelcorrectedmicrowaveimagingthroughperiodicwallstructures AT johnlvolakis modelcorrectedmicrowaveimagingthroughperiodicwallstructures |