UWB Tomographic Radar Imaging of Penetrable and Impenetrable Objects

Jofre, L.; Broquetas, A.; Romeu, J.; Blanch, S.; Toda, Anna Papió; Fábregas, X.; Cardama, A.

doi:10.1109/jproc.2008.2008854

Cited by 54 publications

(37 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The minimum and maximum number of antennas for the head imaging can be calculated by the degrees of freedom (DOF) theory585960. According to DOF, the imaging domain’s perimeter should be sampled at a minimum rate equal to one half of the wavelength in air ( λ min ) to be able to detect the target, Δ φ = λ min /2 a , where a is the radius of the perimeter.…”

Section: Discussionmentioning

confidence: 99%

On-site Rapid Diagnosis of Intracranial Hematoma using Portable Multi-slice Microwave Imaging System

Mobashsher

Abbosh

2016

Sci Rep

View full text Add to dashboard Cite

Rapid, on-the-spot diagnostic and monitoring systems are vital for the survival of patients with intracranial hematoma, as their conditions drastically deteriorate with time. To address the limited accessibility, high costs and static structure of currently used MRI and CT scanners, a portable non-invasive multi-slice microwave imaging system is presented for accurate 3D localization of hematoma inside human head. This diagnostic system provides fast data acquisition and imaging compared to the existing systems by means of a compact array of low-profile, unidirectional antennas with wideband operation. The 3D printed low-cost and portable system can be installed in an ambulance for rapid on-site diagnosis by paramedics. In this paper, the multi-slice head imaging system’s operating principle is numerically analysed and experimentally validated on realistic head phantoms. Quantitative analyses demonstrate that the multi-slice head imaging system is able to generate better quality reconstructed images providing 70% higher average signal to clutter ratio, 25% enhanced maximum signal to clutter ratio and with around 60% hematoma target localization compared to the previous head imaging systems. Nevertheless, numerical and experimental results demonstrate that previous reported 2D imaging systems are vulnerable to localization error, which is overcome in the presented multi-slice 3D imaging system. The non-ionizing system, which uses safe levels of very low microwave power, is also tested on human subjects. Results of realistic phantom and subjects demonstrate the feasibility of the system in future preclinical trials.

show abstract

Section: Discussionmentioning

confidence: 99%

On-site Rapid Diagnosis of Intracranial Hematoma using Portable Multi-slice Microwave Imaging System

Mobashsher

Abbosh

2016

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Further, ultrawideband (UWB) noise radar has achieved high-resolution detection and imaging in foliage penetration (FOPEN) imaging [10,11], through-wall imaging (TWI) [12][13][14], and ground penetration radar (GPR) imaging [15,16] by employing an ultrawide bandwidth. For obtaining high-resolution images of various shaped targets, tomographic radar imaging is emerging as a powerful imaging technique [17][18][19]. In general, radar imaging techniques tend to be formulated in the time domain to use computationally efficient backprojection algorithms and to provide accurate object shape and location results of the target objects [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Ultrawideband Noise Radar Tomography: Principles, Simulation, and Experimental Validation

Shin

Narayanan

Asmuth

et al. 2016

International Journal of Microwave Science and Technology

View full text Add to dashboard Cite

The paper introduces the principles, simulation results, and hardware implementation of ultrawideband (UWB) noise radar for obtaining tomographic images of various scenarios of rotating cylindrical objects using independent and identically distributed UWB noise waveforms. A UWB noise radar was designed to transmit multiple UWB random noise waveforms over the 3-5 GHz frequency range and to measure the backward scattering data for the validation of the theoretical analysis and numerical simulation results. The reconstructed tomographic images of the rotating cylindrical objects based on experimental results are seen to be in good agreement with the simulation results, which demonstrates the capability of UWB noise radar for complete two-dimensional tomographic image reconstruction of various shaped metallic and dielectric target objects.

show abstract

“…The signals received are back propagated towards the transmitter, and normally retransmitted in an iterative process until convergence. The back propagation normally uses an finite difference time domain back propagation algorithm although a Green's function has also been suggested [19]. The method works on the principle that successive iterations reflecting at the measurement surfaces converge to a model of the strongest internal reflectors.…”

Section: Introductionmentioning

confidence: 99%

Non‐iterative beamforming based on Huygens principle for multistatic ultrawide band radar: application to breast imaging

Ghavami

Probert

Tiberi

et al. 2015

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

This study examines the performance of a simple microwave beamforming method using the Huygens scattering principle (called here the Huygens principle method) for detecting breast lesions. The beamforming method is similar to non-iterative time reversal in that the wave received is propagated back into the material, although differs in its treatment of attenuation. The single pass algorithm does not require a solution to an inverse model, making it computationally efficient and so able to offer a throughput appropriate for clinical use. Its performance is compared with time-delay beamforming, which may be implemented with similar computational complexity, on a set of phantoms, including a lossy medium, mimicking breast tissue. The method was used to image a commercially fabricated anatomically shaped breast phantom with multiple hidden inclusions mimicking tumours. The procedure was able to identify and localise significant scatterers inside the volume, with only approximate a-priori knowledge of the dielectric properties of the target object, in spite of its underlying assumption of a single scatterer model.

show abstract

UWB Tomographic Radar Imaging of Penetrable and Impenetrable Objects

Cited by 54 publications

References 37 publications

On-site Rapid Diagnosis of Intracranial Hematoma using Portable Multi-slice Microwave Imaging System

On-site Rapid Diagnosis of Intracranial Hematoma using Portable Multi-slice Microwave Imaging System

Ultrawideband Noise Radar Tomography: Principles, Simulation, and Experimental Validation

Non‐iterative beamforming based on Huygens principle for multistatic ultrawide band radar: application to breast imaging

Contact Info

Product

Resources

About