title: Three-dimensional near-field MIMO array imaging using range migration techniques.
abstract: 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.
authors.affiliation: FEI Company, 5651 Eindhoven, the Netherlands. zhugexd@gmail.com
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Zhuge
authors.forename: Alexander G
authors.initials: AG
authors.lastname: Yarovoy