Electromagnetic Scattering from Multi-Layer Dielectric Media with 3D Random Rough Interfaces Using Translation Matrix Approach

Sanamzadeh, Mohammadreza; Tsang, Leung; Johnson, Joel T.

doi:10.1109/apusncursinrsm.2018.8608182

Cited by 2 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, a variety of numerical methods and approximate methods have been developed for the computation of electromagnetic scattering from layered structures and rough interfaces, such as the method of moments [18], [19], the Kirchhoff approximation method [20], the propagationinside-layer expansion method [21], [22], the finitedifference time-domain method (FDTD) [23], [24], the small perturbation method [25], [26], and the translation matrix method [27]. For GPR, the wideband electromagnetic pulse is mostly used, and the echo data are time-domain data that are easy to observe intuitively.…”

Section: B Numerical Methodsmentioning

confidence: 99%

A Time-Delay Calibration Method for Profile Estimation of Two-Layered Rough Surfaces

Liu

Guo

2019

IEEE Access

View full text Add to dashboard Cite

For detection of a two-layered rough surface structure through ground-penetrating radar, the estimation of the profile of each layered rough surface is an important problem to be solved. In modeling and calculating the scattering of two-layered rough surfaces, we found that the profile of the upper rough surface can be observed directly through the figure of the echo from the upper surface. However, the echo of the lower rough surface has a quite different shape from its surface profile, because of the influence of the scattering of the upper rough surface. This is disadvantageous to the estimation and imaging of the profile of the lower rough surface. To solve this problem, a time-delay calibration method is proposed in this paper to be applied to the profile estimation of the lower rough surface in the case of two-layered rough interface detection. By introducing a smooth surface, the expression of time delay is derived to eliminate the influence of the scattering of the upper surface. Applying the derived expression of time delay to the echo data from the lower rough surface, the echo outline of the lower rough surface can be corrected to reflect the surface's profile shape. The calibrated B-scan echo shape shows good agreement with the profile of the lower rough surface. With this method, we can get the profile shape of the lower rough surface quickly and simply by calibrating the echo data directly. This method can be used for fast microwave imaging of two-layered rough surface and for eliminating the interference of scattering from rough surface on the echoes of nearby targets. The purpose of this paper is to solve the problem we have found in our previous work. The work of this paper is an extension of the previous work. INDEX TERMSProfile estimation, time-delay calibration, two-layered rough surface scattering, ground-penetrating radar, echo shape.

show abstract

Section: B Numerical Methodsmentioning

confidence: 99%

A Time-Delay Calibration Method for Profile Estimation of Two-Layered Rough Surfaces

Liu

Guo

2019

IEEE Access

View full text Add to dashboard Cite

show abstract

“…The input data are the known (or measured) characteristics of the diffraction field (for instance, reflection and transmission coefficients) in a certain frequency range. Such problems find numerous applications in various fields of science and technology [1–7]. For instance, carbon‐fibre reinforced plastic materials are widely used in the manufacturing of aircraft; these materials are layered inhomogeneous dielectric structures.…”

Section: Introductionmentioning

confidence: 99%

Numerical‐analytical method for determining the dielectric constant of 1D inhomogeneous plate in a waveguide

Melezhik

Morozov

Poyedinchuk

et al. 2020

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

Electromagnetic Scattering from Multi-Layer Dielectric Media with 3D Random Rough Interfaces Using Translation Matrix Approach

Cited by 2 publications

References 3 publications

A Time-Delay Calibration Method for Profile Estimation of Two-Layered Rough Surfaces

A Time-Delay Calibration Method for Profile Estimation of Two-Layered Rough Surfaces

Numerical‐analytical method for determining the dielectric constant of 1D inhomogeneous plate in a waveguide

Contact Info

Product

Resources

About