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2017-10-23
High Resolution Radar Focusing Using Spectral Estimation Methods in Wide-Band and Near-Field Configurations: Application to Millimeter-Wave Near-Range Imaging
By
Antoine Jouade,

    Dr. Antoine Jouade

    IETR, UMR-CNRS 6164, Université de Rennes 1

    France

    Homepage

Laurent Ferro-Famil,

    Prof. Laurent Ferro-Famil

    University of Rennes 1, IETR

    France

    Homepage

Stéphane Méric,

    Dr. Stéphane Méric

    IETR

    Univ Rennes, INSA Rennes, CNRS

    France

    Homepage

Olivier Lafond,

    Dr. Olivier Lafond

    IETR Université de Rennes 1

    France

    Homepage

Laurent Le Coq

    Dr. Laurent Le Coq

    University of Rennes 1

    France

    Homepage

Progress In Electromagnetics Research B, Vol. 79, 45-64, 2017
doi:10.2528/PIERB17082402 | Google Scholar

Abstract
The spatial resolution of an imaging system is a key factor, which steers its performance for complex target detection, characterization and recognition. Active electromagnetic imaging systems with limited frequency bandwidth and synthetic aperture may fail to discriminate important details during the imaging process, due to their insufficient resolution properties. Spectral estimation methods may be used to overcome such limitations through dedicated signal processing techniques. This study proposes a new signal processing chain, which is able to cope with near-field and wide-band configurations, to significantly improve 2-D resolution, using classical spectral estimation methods. This work is based on an efficient handling and compensation of critical signal properties, such as near-field and wide bandwidths, which make the proposed technique able to deal with very general imaging configurations, such as near/far-ranges, narrow/wide-beamwidths and -bandwidths, very short aperture... Experimental results obtained at millimeter-wave are shown to demonstrate the performance and versatility of the proposed approach.
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Citation
Antoine Jouade, Laurent Ferro-Famil, Stéphane Méric, Olivier Lafond, and Laurent Le Coq, "High Resolution Radar Focusing Using Spectral Estimation Methods in Wide-Band and Near-Field Configurations: Application to Millimeter-Wave Near-Range Imaging," Progress In Electromagnetics Research B, Vol. 79, 45-64, 2017.
doi:10.2528/PIERB17082402
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