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arXiv · 2401.06891

Multi-View Near-field Imaging in NLOS with Non-Reconfigurable EM Skins

Davide Tornielli Bellini·Dario Tagliaferri·Marouan Mizmizi·Stefano Tebaldini·Umberto Spagnolini
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Abstract

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.

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Davide Tornielli Bellini, Dario Tagliaferri, Marouan Mizmizi, Stefano Tebaldini, Umberto Spagnolini. 2024-01-12. Multi-View Near-field Imaging in NLOS with Non-Reconfigurable EM Skins. https://arxiv.org/abs/2401.06891

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