Comparison of digital beamforming algorithms for 3-D terahertz imaging with sparse multistatic line arrays
In this contribution we compare the back-projection algorithm with our recently developed modified range migration algorithm for 3-D terahertz imaging using sparse multistatic line arrays. A 2-D planar sampling scheme is generated using the array's aperture in combination with an orthogonal...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | deu |
| Published: |
Copernicus Publications
2017-12-01
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| Series: | Advances in Radio Science |
| Online Access: | https://www.adv-radio-sci.net/15/283/2017/ars-15-283-2017.pdf |
| _version_ | 1818392739031547904 |
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| author | B. Baccouche P. Agostini F. Schneider W. Sauer-Greff R. Urbansky F. Friederich F. Friederich |
| author_facet | B. Baccouche P. Agostini F. Schneider W. Sauer-Greff R. Urbansky F. Friederich F. Friederich |
| author_sort | B. Baccouche |
| collection | DOAJ |
| description | In this contribution we compare the back-projection algorithm with our
recently developed modified range migration algorithm for 3-D terahertz
imaging using sparse multistatic line arrays. A 2-D planar sampling scheme is
generated using the array's aperture in combination with an orthogonal
synthetic aperture obtained through linear movement of the object under test.
A stepped frequency continuous wave signal modulation is used for range
focusing. Comparisons of the focusing quality show that results using the
modified range migration algorithm reflect these of the
back-projection algorithm except for some degradation along the array's axis
due to the operation in the array's near-field. Nevertheless the highest
computational efficiency is obtained from the modified range migration
algorithm, which is better than the numerically optimized version of the
back-projection algorithm. Measurements have been performed by using an
imaging system operating in the <i>W</i> frequency band to verify the theoretical
results. |
| first_indexed | 2024-12-14T05:34:12Z |
| format | Article |
| id | doaj.art-56f536a791e54cafa7ea214dbb23e2a9 |
| institution | Directory Open Access Journal |
| issn | 1684-9965 1684-9973 |
| language | deu |
| last_indexed | 2024-12-14T05:34:12Z |
| publishDate | 2017-12-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Advances in Radio Science |
| spelling | doaj.art-56f536a791e54cafa7ea214dbb23e2a92022-12-21T23:15:15ZdeuCopernicus PublicationsAdvances in Radio Science1684-99651684-99732017-12-011528329210.5194/ars-15-283-2017Comparison of digital beamforming algorithms for 3-D terahertz imaging with sparse multistatic line arraysB. Baccouche0P. Agostini1F. Schneider2W. Sauer-Greff3R. Urbansky4F. Friederich5F. Friederich6Fraunhofer Institute for Industrial Mathematics, 67663 Kaiserslautern, GermanyFraunhofer Institute for Industrial Mathematics, 67663 Kaiserslautern, GermanyFraunhofer Institute for Industrial Mathematics, 67663 Kaiserslautern, GermanyInstitute of Communications Engineering, Kaiserslautern University of Technology, 67663 Kaiserslautern, GermanyInstitute of Communications Engineering, Kaiserslautern University of Technology, 67663 Kaiserslautern, GermanyFraunhofer Institute for Industrial Mathematics, 67663 Kaiserslautern, GermanyDepartment of Physics and Research Center OPTIMAS, University of Kaiserslautern, GermanyIn this contribution we compare the back-projection algorithm with our recently developed modified range migration algorithm for 3-D terahertz imaging using sparse multistatic line arrays. A 2-D planar sampling scheme is generated using the array's aperture in combination with an orthogonal synthetic aperture obtained through linear movement of the object under test. A stepped frequency continuous wave signal modulation is used for range focusing. Comparisons of the focusing quality show that results using the modified range migration algorithm reflect these of the back-projection algorithm except for some degradation along the array's axis due to the operation in the array's near-field. Nevertheless the highest computational efficiency is obtained from the modified range migration algorithm, which is better than the numerically optimized version of the back-projection algorithm. Measurements have been performed by using an imaging system operating in the <i>W</i> frequency band to verify the theoretical results.https://www.adv-radio-sci.net/15/283/2017/ars-15-283-2017.pdf |
| spellingShingle | B. Baccouche P. Agostini F. Schneider W. Sauer-Greff R. Urbansky F. Friederich F. Friederich Comparison of digital beamforming algorithms for 3-D terahertz imaging with sparse multistatic line arrays Advances in Radio Science |
| title | Comparison of digital beamforming algorithms for 3-D terahertz imaging with sparse multistatic line arrays |
| title_full | Comparison of digital beamforming algorithms for 3-D terahertz imaging with sparse multistatic line arrays |
| title_fullStr | Comparison of digital beamforming algorithms for 3-D terahertz imaging with sparse multistatic line arrays |
| title_full_unstemmed | Comparison of digital beamforming algorithms for 3-D terahertz imaging with sparse multistatic line arrays |
| title_short | Comparison of digital beamforming algorithms for 3-D terahertz imaging with sparse multistatic line arrays |
| title_sort | comparison of digital beamforming algorithms for 3 d terahertz imaging with sparse multistatic line arrays |
| url | https://www.adv-radio-sci.net/15/283/2017/ars-15-283-2017.pdf |
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