TY - GEN
T1 - Non-Uniform Planar MIMO Array Optimization Criterion in Wavenumber Domain for Aliasing-Free Wideband Near-Field 3D Imaging
AU - Huan, Mingsai
AU - Ma, Yugang
AU - Wang, Shuoguang
AU - Liang, Junli
AU - Zeng, Yonghong
AU - Chin, Francois
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85207070961&partnerID=8YFLogxK
U2 - 10.1109/AP-S/INC-USNC-URSI52054.2024.10687261
DO - 10.1109/AP-S/INC-USNC-URSI52054.2024.10687261
M3 - 会议稿件
AN - SCOPUS:85207070961
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
SP - 175
EP - 176
BT - 2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024
Y2 - 14 July 2024 through 19 July 2024
ER -