An optimization approach to time-domain electromagnetic inverse problem for a stratified dispersive and dissipative slab

He, Sailing; Fuks, Peter; Larson, Gunnar

doi:10.1109/8.535386

Cited by 41 publications

(18 citation statements)

References 14 publications

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“…However, the time domain scattering data is a potential alternative scheme for the inverse problem, because there is more available information about the scatterer than for single-frequency scattering data alone. Therefore, various time domain inversion approaches have been intensively proposed in recent years, which could be briefly classified into the layer-stripping approach (Yagle & Frolik, 1996) and iterative approaches, including the Born iterative method (BIM; Moghaddam et al, 1991), the distorted Born iterative method (DBIM; Weedon, 1994), and optimization approaches (Rekanos, 2003;Takenaka et al, 2000;He et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Time Domain Image Reconstruction for Homogenous Dielectric Objects by Dynamic Differential Evolution

Sun

Chiu

et al. 2010

UEMG

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Section: Introductionmentioning

confidence: 99%

Time Domain Image Reconstruction for Homogenous Dielectric Objects by Dynamic Differential Evolution

Sun

Chiu

et al. 2010

UEMG

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“…However, the time domain scattering data is important for the inverse problem because the available information content about scatterer is more than the only single frequency scattering data. Therefore, various time domain inversion approaches are proposed [12][13][14][15][16][17][18][19][20][21][22][23][24][25] that could be briefly classified as the layer-stripping approach [12], the iterative approach: Born iterative method (BIM) [13][14][15], the distorted Born iterative method (DBIM) [16], Local Shape Function (LSF) [17] and optimization approach [18][19][20][21]. Traditional iterative inverse algorithms are founded on a functional minimization via some gradient-type scheme.…”

Section: Introductionmentioning

confidence: 99%

Time Domain Inverse Scattering of a Two-Dimensional Homogenous Dielectric Object With Arbitrary Shape by Particle Swarm Optimization

Huang¹,

Chiu²,

Li³

et al. 2008

PIER

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Abstract-This paper presents a computational approach to the twodimensional time domain inverse scattering problem of a dielectric cylinder based on the finite difference time domain (FDTD) method and the particle swarm optimization (PSO) to determine the shape, location and permittivity of a dielectric cylinder. A pulse is incident upon a homogeneous dielectric cylinder with unknown shape and dielectric constant in free space and the scattered field is recorded outside. By using the scattered field, the shape and permittivity of the dielectric cylinder are reconstructed. The subgridding technique is implemented in the FDTD code for modeling the shape of the cylinder more closely. In order to describe an unknown cylinder with arbitrary shape more effectively, the shape function is expanded by closed cubicspline function instead of frequently used trigonometric series. The inverse problem is resolved by an optimization approach, and the global searching scheme PSO is then employed to search the parameter space. Numerical results demonstrate that, even when the initial guess is far away from the exact one, good reconstruction can be obtained. In addition, the effects of Gaussian noise on the reconstruction results are investigated. Numerical results show that even the measured scattered E fields are contaminated with some Gaussian noise, PSO can still yield good reconstructed quality.

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“…Using the transient reflected field, the material profile of inhomogeneous planarly-layered materials may be reconstructed [1][2][3][4][5][6]. In a related application, it may only be important to determine whether the properties of layered materials have changed due to environmental degradation or misapplication.…”

Section: Introductionmentioning

confidence: 99%

Natural-Mode Representation for the Field Reflected by an Inhomogeneous Conductor-Backed Material Layer - Te Case

Rothwell¹

2006

PIER

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Abstract-The transient plane-wave field reflected by a conductorbacked, inhomogeneous, planar material layer is considered. The reflected field is written as a natural-mode expansion, and the natural resonance frequencies of the slab are found by solving a homogeneous integral equation for the field within the slab. Several examples are considered, and the natural mode series is verified by comparison to the inverse fast-Fourier transform of the frequency-domain reflected field.

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An optimization approach to time-domain electromagnetic inverse problem for a stratified dispersive and dissipative slab

Cited by 41 publications

References 14 publications

Time Domain Image Reconstruction for Homogenous Dielectric Objects by Dynamic Differential Evolution

Time Domain Image Reconstruction for Homogenous Dielectric Objects by Dynamic Differential Evolution

Time Domain Inverse Scattering of a Two-Dimensional Homogenous Dielectric Object With Arbitrary Shape by Particle Swarm Optimization

Natural-Mode Representation for the Field Reflected by an Inhomogeneous Conductor-Backed Material Layer - Te Case

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