Multi-View Near-field Imaging in NLOS with Non-Reconfigurable EM Skins
Fuente:
arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866911756897484800 |
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| author | Bellini, Davide Tornielli Tagliaferri, Dario Mizmizi, Marouan Tebaldini, Stefano Spagnolini, Umberto |
| author_facet | Bellini, Davide Tornielli Tagliaferri, Dario Mizmizi, Marouan Tebaldini, Stefano Spagnolini, Umberto |
| contents | This paper deals with radar imaging in non-line of sight (NLOS) with the aid of non-reconfigurable electromagnetic skins (NR-EMSs). NR-EMSs are passive metasurfaces whose reflection properties are defined during the manufacturing process, and represent a low-cost alternative to reconfigurable intelligent surfaces to implement advanced wave manipulations. We propose and discuss a multi-view near-field radar imaging system where a moving source progressively illuminates different portions of the NR-EMS, whereby each portion (\textit{module}) is purposely phase-configured to focus the impinging radiation over a desired NLOS area of interest. The source, e.g., a radar-equipped vehicle, synthesizes a wide aperture that maps onto the NR-EMS, allowing NLOS imaging with enhanced resolution compared to the standalone radar capabilities. Simulation results show the feasibility and benefits of such an imaging approach and shed light on a possible practical application of metasurfaces for sensing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_06891 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Multi-View Near-field Imaging in NLOS with Non-Reconfigurable EM Skins Bellini, Davide Tornielli Tagliaferri, Dario Mizmizi, Marouan Tebaldini, Stefano Spagnolini, Umberto Signal Processing This paper deals with radar imaging in non-line of sight (NLOS) with the aid of non-reconfigurable electromagnetic skins (NR-EMSs). NR-EMSs are passive metasurfaces whose reflection properties are defined during the manufacturing process, and represent a low-cost alternative to reconfigurable intelligent surfaces to implement advanced wave manipulations. We propose and discuss a multi-view near-field radar imaging system where a moving source progressively illuminates different portions of the NR-EMS, whereby each portion (\textit{module}) is purposely phase-configured to focus the impinging radiation over a desired NLOS area of interest. The source, e.g., a radar-equipped vehicle, synthesizes a wide aperture that maps onto the NR-EMS, allowing NLOS imaging with enhanced resolution compared to the standalone radar capabilities. Simulation results show the feasibility and benefits of such an imaging approach and shed light on a possible practical application of metasurfaces for sensing. |
| title | Multi-View Near-field Imaging in NLOS with Non-Reconfigurable EM Skins |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2401.06891 |