Near-Field Millimeter-Wave Imaging via Circular-Arc MIMO Arrays
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.
- Publication:
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arXiv e-prints
- Pub Date:
- February 2021
- DOI:
- 10.48550/arXiv.2102.13418
- arXiv:
- arXiv:2102.13418
- Bibcode:
- 2021arXiv210213418L
- Keywords:
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- Electrical Engineering and Systems Science - Signal Processing
- E-Print:
- arXiv admin note: text overlap with arXiv:2101.08982