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Article

Low-Complexity 3D InISAR Imaging Using a Compressive Hardware Device and a Single Receiver

1
IETR, University of Rennes 1, 35000 Rennes, France
2
ISAE-SUPAERO, University of Toulouse, 31055 Toulouse, France
3
CESBIO, University of Toulouse, CNES/CNRS/INRAE/IRD/UPS, 31401 Toulouse, France
*
Author to whom correspondence should be addressed.
Academic Editor: Renato Machado
Sensors 2022, 22(15), 5870; https://doi.org/10.3390/s22155870
Received: 24 June 2022 / Revised: 28 July 2022 / Accepted: 2 August 2022 / Published: 5 August 2022
(This article belongs to the Section Radar Sensors)
An Interferometric Inverse SAR system is able to perform 3D imaging of non-cooperative targets by measuring their responses over time and through several receiving antennas. Phase differences between signals acquired with a spatial diversity in vertical or horizontal directions are used to localize moving scatterers in 3D. The use of several receiving channels generally results into a costly and complex hardware solution, and this paper proposes performing this multichannel acquisition using a single receiver and a hardware compressive device, based on a chaotic cavity which simultaneously multiplexes in the spectral domain signals acquired over different antennas. The radar responses of the scene are encoded in the spectral domain onto the single output of a leaky chaotic cavity, and can be retrieved by solving an inverse problem involving the random transfer matrix of the cavity. The applicability of this compressed sensing approach for the 3D imaging of a non-cooperative target using low-complexity hardware is demonstrated using both simulations and measurements. This study opens up new perspectives to reduce the hardware complexity of high-resolution ISAR systems. View Full-Text
Keywords: ISAR; interferometric ISAR; radar; compressive device; computational imaging ISAR; interferometric ISAR; radar; compressive device; computational imaging
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MDPI and ACS Style

Lo, M.D.; Davy, M.; Ferro-Famil, L. Low-Complexity 3D InISAR Imaging Using a Compressive Hardware Device and a Single Receiver. Sensors 2022, 22, 5870. https://doi.org/10.3390/s22155870

AMA Style

Lo MD, Davy M, Ferro-Famil L. Low-Complexity 3D InISAR Imaging Using a Compressive Hardware Device and a Single Receiver. Sensors. 2022; 22(15):5870. https://doi.org/10.3390/s22155870

Chicago/Turabian Style

Lo, Mor Diama, Matthieu Davy, and Laurent Ferro-Famil. 2022. "Low-Complexity 3D InISAR Imaging Using a Compressive Hardware Device and a Single Receiver" Sensors 22, no. 15: 5870. https://doi.org/10.3390/s22155870

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