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Contribution au développement de radars MIMO opto-microondes courte portée

Abstract : The work presented in this manuscript concerns the development of MIMO (Multiple-Input Multiple-Output) imaging systems using a time-division multiplexing approach in reception. This approach, performed in the optical domain, makes it possible to acquire on a single digitization channel all the signals received simultaneously by the receiving antennas. To achieve this, an optical fiber array is connected to the receiving antennas in order to impose a gradual propagation delay to the different signals received. Once delayed, these signals are then summed by means of an original opto-RF summing device developed in the XLIM laboratory. A first demonstrator operating in C band is realized in order to validate this approach. Then, this opto-RF multiplexing concept is extended to K-band in the context of the OBIWAM project supported by the Agence National de la Recherche and by the Agence de l’Innovation de Défense.
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Submitted on : Monday, November 15, 2021 - 4:21:41 PM
Last modification on : Tuesday, November 16, 2021 - 3:56:27 AM

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Fabien Berland. Contribution au développement de radars MIMO opto-microondes courte portée. Electronique. Université de Limoges, 2021. Français. ⟨NNT : 2021LIMO0074⟩. ⟨tel-03429447⟩

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