FMCW radar near field three-dimensional imaging

Yang, Jungang; Thompson, John; Huang, Xiaotao; Jin, Tian; Zhang, Zhimin

doi:10.1109/icc.2012.6364681

Cited by 12 publications

(3 citation statements)

References 8 publications

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“…which allows the use of nonuniformly spaced data at the expense of an efficiency reduction when compared to Fast Fourier Transform based methods [24], [6].…”

Section: B Imaging Techniquementioning

confidence: 99%

Freehand mm-Wave Imaging With a Compact MIMO Radar

Álvarez-Narciandi

Laviada

Las-Heras

2021

IEEE Trans. Antennas Propagat.

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This paper presents a freehand imaging system, which takes full-advantage of a compact multiple-input multipleoutput (MIMO) radar to provide real-time results by means of freehand movements. The system is based on a commercial radar-on-chip, equipped with four receivers and two transmitters, and an optical tracking system (i.e., motion capture system) for retrieving its position and attitude. The reduced size of the radar enables its handheld operation, making possible to create a synthetic aperture by moving the scanner over the area of interest. Due to the new degrees of freedom with respect to previous implementations based on quasi-monostatic topologies, a novel calibration strategy for the system is required in order to mitigate positioning errors. After calibration, simulations and measurements are accomplished revealing that the novel freehand multistatic setup significantly outperforms the monostatic setup in terms of scanning speed and image quality. Multimedia material is provided to illustrate this performance.

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“…which allows the use of nonuniformly spaced data at the expense of an efficiency reduction when compared to Fast Fourier Transform based methods [24], [6].…”

Section: B Imaging Techniquementioning

confidence: 99%

Freehand mm-Wave Imaging With a Compact MIMO Radar

Álvarez-Narciandi

Laviada

Las-Heras

2021

IEEE Trans. Antennas Propagat.

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“…Although this algorithm is not as efficient as other implementations relying on Fast Fourier Transforms (e.g., [31]) but requiring equally spaced data, it is still able to provide real-time reflectivity estimations for areas of several squared centimeters as it will be illustrated later.…”

Section: B Imaging Techniquementioning

confidence: 99%

Freehand, Agile, and High-Resolution Imaging With Compact mm-Wave Radar

et al. 2019

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The aim of this paper is to present a freehand scanning system with a compact mm-wave radar. In order to achieve high-resolution images, the system exploits the free movements of the radar to create a synthetic aperture. However, in contrast to conventional synthetic aperture radar (SAR), in which canonical acquisition surfaces (e.g., planes or cylinders) are used, the system allows for a given tolerance compatible with real handmade trajectories. Moreover, different techniques are studied to compensate for the impact of irregular sampling to reduce the artifacts in the image. As a result, real-time scanning can be readily performed even by inexperienced users. The scanning system, comprising a commercial motion capture system and an mm-wave module, can be easily deployed and calibrated. Several results involving different objects are shown to illustrate the performance of the system. INDEX TERMS SAR imaging, mm-wave imaging, FMCW radar, real-time imaging, freehand scanner.

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“…Ultrawide-band 3D-SAR imaging using robotic arms have been demonstrated using milllimeter-Wave FMCW-Radars [5], [6], [7]. In this article, we concentrate on a chirped radar with a lower center frequency of 8 GHz, yielding better material penetration properties.…”

Section: Introductionmentioning

confidence: 99%

Robotic control for cognitive UWB radar

Bruggenwirth

Rial

2019

World Scientific Encyclopedia With Semantic Computing and Robotic Intelligence

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In the article, we describe a trajectory planning problem for a 6-DOF robotic manipulator arm that carries an ultra-wideband (UWB) radar sensor with synthetic aperture (SAR). The resolution depends on the trajectory and velocity profile of the sensor head. The constraints can be modelled as an optimization problem to obtain a feasible, collision-free target trajectory of the end-effector of the manipulator arm in Cartesian coordinates that minimizes observation time. For 3Dreconstruction, the target is observed in multiple height slices. For Through-the-Wall radar the sensor can be operated in sliding mode for scanning larger areas. For IED inspection the spot-light mode is preferred, constantly pointing the antennas towards the target to obtain maximum azimuth resolution.

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FMCW radar near field three-dimensional imaging

Cited by 12 publications

References 8 publications

Freehand mm-Wave Imaging With a Compact MIMO Radar

Freehand mm-Wave Imaging With a Compact MIMO Radar

Freehand, Agile, and High-Resolution Imaging With Compact mm-Wave Radar

Robotic control for cognitive UWB radar

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