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arXiv · 2102.13418

Near-Field Millimeter-Wave Imaging via Circular-Arc MIMO Arrays

Shiyong Li·Shuoguang Wang·Guoqiang Zhao·Houjun Sun
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Abstract

Millimeter-wave (MMW) imaging has a wide prospect in application of concealed weapons detection. We propose a circular-arc multiple-input multiple-output (MIMO) array scheme with uniformly spaced transmit and receive antennas along the horizontal-arc direction, while scanning along the vertical direction. The antenna beams of the circular-arc MIMO array can provide more uniform coverage of the imaging scene than those of the linear or planar MIMO arrays. Further, a near-field three-dimensional (3-D) imaging algorithm, based on the spatial frequency domain processing, is presented with analysis of sampling criteria and resolutions. Numerical simulations, as well as comparisons with the back-projection (BP) algorithm, are provided to show the efficacy of the proposed approach.

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Shiyong Li, Shuoguang Wang, Guoqiang Zhao, Houjun Sun. 2021-02-26. Near-Field Millimeter-Wave Imaging via Circular-Arc MIMO Arrays. https://arxiv.org/abs/2102.13418

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