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Three-dimensional near-field MIMO array imaging using range migration techniques

Three-dimensional near-field MIMO array imaging using range migration techniques

IEEE Transactions on Image Processing 21(6): 3026-3033

This paper presents a 3-D near-field imaging algorithm that is formulated for 2-D wideband multiple-input-multiple-output (MIMO) imaging array topology. The proposed MIMO range migration technique performs the image reconstruction procedure in the frequency-wavenumber domain. The algorithm is able to completely compensate the curvature of the wavefront in the near-field through a specifically defined interpolation process and provides extremely high computational efficiency by the application of the fast Fourier transform. The implementation aspects of the algorithm and the sampling criteria of a MIMO aperture are discussed. The image reconstruction performance and computational efficiency of the algorithm are demonstrated both with numerical simulations and measurements using 2-D MIMO arrays. Real-time 3-D near-field imaging can be achieved with a real-aperture array by applying the proposed MIMO range migration techniques.

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Accession: 056570874

Download citation: RISBibTeXText

PMID: 22345541

DOI: 10.1109/tip.2012.2188036

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