Non-Uniform Planar MIMO Array Optimization Criterion in Wavenumber Domain for Aliasing-Free Wideband Near-Field 3D Imaging

Mingsai Huan, Yugang Ma, Shuoguang Wang, Junli Liang, Yonghong Zeng, Francois Chin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Microwave/millimeter-wave imaging is widely desired in various applications, including remote sensing, integrated sensing and communications, security, and biomedical imaging. Sparse MIMO arrays, while cost-effective, often face aliasing artifacts due to spectral distortion in non-uniform sampling. This paper introduces an innovative optimization criterion for non-uniform planar MIMO arrays in the wavenumber domain, aiming at aliasing-free wideband near-field 3D imaging. We propose the wavenumber-range spectrum (WS) of the normal plane wave as a tool to evaluate spectral distortion in near-field non-uniform sampling. This approach utilizes the non-uniform-fast-Fourier-transform-based MIMO range migration algorithm with a modified non-uniform sampling function. Simulations show that the optimized array, with maximum peak sidelobe ratio (PSLR) in the WS, consistently maintains low sidelobe levels (SLL) in the point spread function (PSF) for central and edge targets, and thus achieves aliasing-free imaging.

Original languageEnglish
Title of host publication2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages175-176
Number of pages2
ISBN (Electronic)9798350369908
DOIs
StatePublished - 2024
Event2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024 - Florence, Italy
Duration: 14 Jul 202419 Jul 2024

Publication series

NameIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
ISSN (Print)1522-3965

Conference

Conference2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024
Country/TerritoryItaly
CityFlorence
Period14/07/2419/07/24

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