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W-Band FMCW MIMO Radar System for High-Resolution Multimode Imaging With Time- and Frequency-Division Multiplexing

Jeon, Se-Yeon and kim, Sumin and Kim, Jeongbae and Kim, seok and Shin, Seungha and Kim, Munsung and Ka, Min-Ho (2020) W-Band FMCW MIMO Radar System for High-Resolution Multimode Imaging With Time- and Frequency-Division Multiplexing. IEEE Transactions on Geoscience and Remote Sensing. IEEE - Institute of Electrical and Electronics Engineers. ISSN 0196-2892.

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A W-band multiple-input multiple-output (MIMO) radar imaging system has been proposed. The 4 × 4 radar system that forms a 2-D virtual array operates at a center frequency of 94 GHz and bandwidth of 1 GHz with frequency-modulated continuous wave. A hybrid scheme comprising time- and frequency-division multiplexing is introduced for establishing orthogonal waveforms, where the transmit channels perform alternate transmission in pairs. The proposed scheme can efficiently extend the number of MIMO channels utilizing the existing hardware with simultaneous transmission. The design, implementation, measurements, and imaging results of the proposed radar system have been presented. The imaging performance was tested through outdoor experiments. The high-resolution performance was shown with images generated using a synthetic aperture radar. The impulse responses of all channels were measured, and the resolution was confirmed to be 0.15 m in all the channels. In addition, a human and a car at 100-m range were imaged using the proposed radar system. The polarimetric and interferometric capabilities were tested for multimode imaging with the MIMO configuration. Overall, the measurements and experimental results verified the feasibility of the proposed MIMO radar with hybrid scheme as a high-resolution multimode imaging system.

Item URL in elib:https://elib.dlr.de/136626/
Document Type:Article
Title:W-Band FMCW MIMO Radar System for High-Resolution Multimode Imaging With Time- and Frequency-Division Multiplexing
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Jeon, Se-YeonSe-Yeon.Jeon (at) dlr.deUNSPECIFIED
Ka, Min-Hokaminho (at) yonsei.ac.krUNSPECIFIED
Date:February 2020
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Keywords:Frequency-modulated continuous wave (FMCW) , multimode imaging , multiple-input multiple-output (MIMO) , orthogonal waveform , radar , synthetic aperture radar (SAR) , transceiver , W-band
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Development of a mini-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Jeon, Se-Yeon
Deposited On:13 Oct 2020 15:25
Last Modified:13 Oct 2020 15:25

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