W-Band MIMO FMCW Radar System With Simultaneous Transmission of Orthogonal Waveforms for High-Resolution Imaging

Jeon, Soo-Young; Ka, Min-Ho; Shin, Seungha; Kim, Munsung; Kim, Seok; Kim, Sumin; Kim, Jeongbae; Dewantari, Aulia; Kim, Jaeheung; Chung, Hansup

doi:10.1109/tmtt.2018.2867003

Cited by 29 publications

(7 citation statements)

References 24 publications

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“…But they are more sensitive to Doppler frequency shifts which are difficult to compensate for long sweeps [7], which is the case in the context of VSM. Chirp rate division (CRD) [8] is also an alternative but it needs as many frequency synthesizers as TX channels to be able to sweep linearly simultaneously with different chirp rates.…”

Section: Radar Architecture and Modulationsmentioning

confidence: 99%

Modulation Scheme Impact on Phase Noise in FMCW Radar for Short-Range Applications

Rengifo

Chicco

Roux

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

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This paper presents an analysis of different modulations that can be used at low-IF in short-range frequencymodulated continuous wave (FMCW) radars which are more sensitive to DC offsets and flicker noise. These modulations are also a key functionality in multiple-input multiple-output (MIMO) FMCW radars to implement orthogonality between the different transmit signals. Architectures with two PLLs, set at slightly different frequencies to create a low-IF, and one PLL, using OOK and BPSK modulations, are compared regarding their phase noise at the resulting IF signal. Measurements were performed on a COTS 60 GHz FMCW radar to validate the calculated and simulated results.

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Section: Radar Architecture and Modulationsmentioning

confidence: 99%

Modulation Scheme Impact on Phase Noise in FMCW Radar for Short-Range Applications

Rengifo

Chicco

Roux

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

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“…Considering the above, the radar system requirements were defined as Table 2 to meet the SAR system requirements [39], [40]. The radar system (Figure 1 Figure 2.…”

Section: B Radar Systemmentioning

confidence: 99%

Multichannel W-Band SAR System on a Multirotor UAV Platform With Real-Time Data Transmission Capabilities

et al. 2020

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In recent years, the demand for small-scale remote sensing, which is used in disaster monitoring, agriculture, and ground subsidence has increased. A multichannel synthetic aperture radar (SAR) system can provide image and topographic information of the illuminated scene, regardless of adverse weather conditions. As a cost-effective solution to radar imaging, a multichannel W-band SAR system mounted on a multirotor unmanned aerial vehicle (UAV) is presented. The radar module was designed to operate at W-band to achieve small size and weight allowing the module to be mounted on multirotor UAVs with small payload. A detailed description of the design and measurement of the system is provided in this paper. The radar imaging capability of the developed system was verified by performing outdoor experiments using isolated buildings as targets. The multichannel functionality of the system was verified by measuring height of a point target placed above the ground. The measurements and experiments verified the feasibility of a multichannel radar mounted on a multirotor UAV for imaging and topographic applications.

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“…Besides, there is a defocusing problem in the retrieved images due to the platform deviation from the nominal trajectory and the flight instabilities [8]. As has been discussed in [9][10][11][12][13][14], the SAR systems working on the millimeter waves like W-band can obtain the detailed ground texture features, the highresolution and minimal changes of the target benefited from the unique reflection characteristics and broadband characteristics of such millimeter waves. Comparing with the other microwave band, W-band SAR systems have smaller antennas and circuits while maintaining the same performance, which have been the research focus for the light-weight UAV based payloads.…”

Section: Introductionmentioning

confidence: 99%

A W-Band 3-D Integrated Mini-SAR System With High Imaging Resolution on UAV Platform

Ding

Tang

et al. 2020

IEEE Access

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The light-small multi-rotor unmanned aerial vehicle (UAV) carrying with a mini synthetic aperture radar (SAR) payload has provided an advanced information acquisition technology for the target detecting and imaging fields. In this paper, a W-band compact SAR system is proposed, which has been successfully deployed on the unmanned aerial vehicle (UAV) platform demonstrating state-of-the-art imaging resolution of about 4.5 cm. In order to achieve remarkable compactness, light weight and powersaving feature for the proposed system, the techniques of the three-dimensional (3-D) integration are adopted, where a whole-system size of only 67×60×50 mm 3 and the weight of 400 g are obtained. This proposed system achieves higher SAR-imaging resolution thanks to the contributions of many efforts, including the technique of high-linearity waveform generation, the substrate integrated waveguide (SIW) antenna with high isolation by the electromagnetic band-gap (EBG) mechanism, and a novel motion compensation method for the imaging formation. To validate this proposed idea, a UAV SAR prototype operating at W-band is designed and fabricated. The measurements show great signal-to-noise ratio imaging results with excellent focusing effect. The proposed SAR system is promisingly an ideal candidate for the target detecting/imaging applications deployed on the UAV platform. INDEX TERMS Frequency modulated source, mini synthetic aperture radar (SAR), high imaging resolution, unmanned aerial vehicle (UAV), 3-D integration Man-Lai Ding was born in Shanxi, China, in 1982. He received the M.S. degree in electromagnetic field technology from

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W-Band MIMO FMCW Radar System With Simultaneous Transmission of Orthogonal Waveforms for High-Resolution Imaging

Cited by 29 publications

References 24 publications

Modulation Scheme Impact on Phase Noise in FMCW Radar for Short-Range Applications

Modulation Scheme Impact on Phase Noise in FMCW Radar for Short-Range Applications

Multichannel W-Band SAR System on a Multirotor UAV Platform With Real-Time Data Transmission Capabilities

A W-Band 3-D Integrated Mini-SAR System With High Imaging Resolution on UAV Platform

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