Three-Dimensional Microwave Holographic Imaging Employing Forward-Scattered Waves Only

Amineh, Reza K.; Ravan, Maryam; McCombe, Justin J.; Nikolova, Natalia K.

doi:10.1155/2013/897287

Cited by 27 publications

(15 citation statements)

References 21 publications

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“…In addition, microwave imaging systems eliminate the use of ionizing radiation such as those present in X-ray systems and, therefore, pose no known health hazard at a low power. In the past few years, an increased interest has been addressed to three-dimensional (3D) microwave imaging [16][17][18][19][20][21][22]. The system has the capability of mapping the microwave reflectivity of an individual in 3D space and providing the basis for detection, identification, and further automatic recognition.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Microwave Imaging for Concealed Weapon Detection Using Range Stacking Technique

Tan

Huang

et al. 2017

International Journal of Antennas and Propagation

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Three-dimensional (3D) microwave imaging has been proven to be well suited for concealed weapon detection application. For the 3D image reconstruction under two-dimensional (2D) planar aperture condition, most of current imaging algorithms focus on decomposing the 3D free space Green function by exploiting the stationary phase and, consequently, the accuracy of the final imagery is obtained at a sacrifice of computational complexity due to the need of interpolation. In this paper, from an alternative viewpoint, we propose a novel interpolation-free imaging algorithm based on wavefront reconstruction theory. The algorithm is an extension of the 2D range stacking algorithm (RSA) with the advantages of low computational cost and high precision. The algorithm uses different reference signal spectrums at different range bins and then forms the target functions at desired range bin by a concise coherent summation. Several practical issues such as the propagation loss compensation, wavefront reconstruction, and aliasing mitigating are also considered. The sampling criterion and the achievable resolutions for the proposed algorithm are also derived. Finally, the proposed method is validated through extensive computer simulations and real-field experiments. The results show that accurate 3D image can be generated at a very high speed by utilizing the proposed algorithm.

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Section: Introductionmentioning

confidence: 99%

Three-Dimensional Microwave Imaging for Concealed Weapon Detection Using Range Stacking Technique

Tan

Huang

et al. 2017

International Journal of Antennas and Propagation

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“…To overcome the limitations due to the far‐field approximations, in near‐field imaging applications, the data for the incident field and Green's function have been obtained via simulations in Refs. . In practice, often, the fidelity of the simulation models, although better than the analytical approximations, may still be too low to ensure good image quality.…”

Section: Introductionmentioning

confidence: 99%

“…In all the previously proposed near‐field holographic imaging techniques, the data acquisition is performed over a rectangular aperture. Here, we propose acquisition of the wideband scattered waves over a cylindrical aperture.…”

Section: Introductionmentioning

confidence: 99%

Three‐dimensional holographic imaging using data collected over cylindrical apertures

Amineh

Ravan

et al. 2018

Micro & Optical Tech Letters

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“…The research on three-dimensional short-range microwave holographic imaging has been growing rapidly in recent years. Areas such as animal tissue imaging [10], influences of polarization data on image quality [11], the imaging of larger objects [12], have all been studied in depth, and further the superiority of three-dimensional short-range microwave holographic imaging technique is also validated by the phase radiation patterns [13]. Domestic research focuses on microwave holography measurement [14], microwave holographic antenna [15], short-range millimeter wave holographic imaging technology [16].…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional short-range microwave holographic imaging algorithm and imaging system scheme

Lao

Gong

2015

2015 4th International Conference on Computer Science and Network Technology (ICCSNT)

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A new three-dimensional microwave holographic imaging technique is applied for the short-range targets. It is based on two-dimensional short-range microwave holographic imaging technique by implementing Fourier analysis of the broadband reflection and transmission signals recorded by two antennas scanning together along two rectangular parallel apertures on both sides of the inspected region. The Green's function and incident field are obtained from either direct measurements or simulations. The reconstructed threedimensional images of the target are composed of a series of twodimensional slice images at all expected range locations. The errors induced by the three-dimensional inverse Fourier transform are reduced and the imaging quality is improved. A method of the imaging algorithm implementation has been proposed. It first uses electromagnetic computing software to establish simulation model, and obtain the incident field, the scattered field and the Green's function data of the target. Then these data are applied into the developed imaging algorithm to reconstruct target. The simulation results indicate that the threedimensional short-range microwave holographic imaging algorithm could reconstruct the target clearly. Simultaneously, the results validated the accuracy of the proposed implementation method. Finally, we also proposed a design of a practical imaging experiment system scheme.

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Three-Dimensional Microwave Holographic Imaging Employing Forward-Scattered Waves Only

Cited by 27 publications

References 21 publications

Three-Dimensional Microwave Imaging for Concealed Weapon Detection Using Range Stacking Technique

Three-Dimensional Microwave Imaging for Concealed Weapon Detection Using Range Stacking Technique

Three‐dimensional holographic imaging using data collected over cylindrical apertures

Three-dimensional short-range microwave holographic imaging algorithm and imaging system scheme

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