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time-domain scattering equations

On some differential equations arising in a time domain inverse scattering problem for a dissipative wave equation

On some differential equations arising in a time domain inverse scattering problem for a dissipative wave equation

... We shall now quote an existence and uniqueness theorem which is applicable to the inverse problems of §2 when the reflection kernel is both known exactly and to arise from such a problem[r] ...

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A Cell-Vertex Finite Volume Time Domain Method for Electromagnetic Scattering

A Cell-Vertex Finite Volume Time Domain Method for Electromagnetic Scattering

... volume time integration scheme, originally presented for the two-dimensional Euler equations is initially applied to the solution of Maxwells equations in ...5. SCATTERING FROM 3D ...

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Unique solvability and stability of the time domain electromagnetic scattering problem with a locally perturbed perfectly conducting plate

Unique solvability and stability of the time domain electromagnetic scattering problem with a locally perturbed perfectly conducting plate

... Maxwell’s equations, respec- tively, which play important roles in the category of wave propagation problems ...corresponding scattering problems are referred to as time domain problems since ...

13

Cell-Vertex Based Multigrid Solution of the Time-Domain Maxwell's Equations

Cell-Vertex Based Multigrid Solution of the Time-Domain Maxwell's Equations

... The time domain Maxwell’s equations posed as a set of hyperbolic conservation laws are solved using a cell-vertex based multilevel scheme originally proposed by Ni for the solution of nonlinear Euler ...

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Fast time domain modeling of surface scattering from reflectors and diffusers

Fast time domain modeling of surface scattering from reflectors and diffusers

... the time- domain, finite difference time domain (FDTD) is arguably the most popular wave-based ...simultaneous equations and so can also be slow to ...derives time- domain ...

8

Mathematical Modeling of Single Phase Flow and Particulate Flow Subjected to Microwave Heating

Mathematical Modeling of Single Phase Flow and Particulate Flow Subjected to Microwave Heating

... Maxwell’s equations. The finite difference time domain (FDTD) method developed by Yee [25] has been used to provide a full description of electromagnetic scattering and absorption and gives ...

172

Convolution spline approximations for time domain boundary integral equations

Convolution spline approximations for time domain boundary integral equations

... sphere scattering example described ...in time than space, the time error decreases faster than the space error when the mesh is refined with fixed mesh ratio, and the space error eventually ...the ...

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A Fast Explicit FETD Method Based on Compressed Sensing

A Fast Explicit FETD Method Based on Compressed Sensing

... element time-domain method (FETD) is an efficient tool for solving electromagnetic scattering problems, since it combines the advantages of time-domain techniques with the versatile ...

7

A Time Domain Integral Equation Solver for Scattering from General Chiral Objects

A Time Domain Integral Equation Solver for Scattering from General Chiral Objects

... electromagnetic scattering by general Chiral objects is investigated using time-domain integral equations with the Poggio, Miller, Chang, Harrington, Wu, and Tsai (PMCHWT) ...uncoupled ...

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On hybrid temporal basis functions for stable numerical solution of time domain boundary integral equations

On hybrid temporal basis functions for stable numerical solution of time domain boundary integral equations

... integral equations. For instances, boundary integral equations can be derived for the quasi-potential flows and for acoustic wave scattering problems ...integral equations are often carried ...

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Domain decomposition preconditioning for the high-frequency time-harmonic Maxwell equations with absorption

Domain decomposition preconditioning for the high-frequency time-harmonic Maxwell equations with absorption

... the domain (in comparison to the situation where σ > 0 everywhere), but the performance of B ξ −1 does not; see ...of scattering by a 3-d waveguide-like cavity, preconditioning A with B ξ −1 exhibits ...

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Finite-Difference Time-Domain Simulation of Light Propagation in 2D Periodic and Quasi-Periodic Photonic Structures

Finite-Difference Time-Domain Simulation of Light Propagation in 2D Periodic and Quasi-Periodic Photonic Structures

... finite-difference time-domain method (FDTD) is a very powerful technique for numerical analysis of Maxwell’s equations ...waveguides, scattering media or photonic crystals [2, ...

6

A stable time domain BEM for diffuser scattering

A stable time domain BEM for diffuser scattering

... first time domain BEM to use this formulation was Kawai & Terai’s [10] implementation for modelling thin ...frequency domain and implemented a BEM with different boundary conditions on open and ...

7

A P-Variable Higher-Order Finite Volume Time Domain Method for Electromagnetic Scattering

A P-Variable Higher-Order Finite Volume Time Domain Method for Electromagnetic Scattering

... (EM) scattering problems with full wave solvers in time domain like Finite Difference Time Domain (FDTD) or Finite Volume Time Domain (FVTD) method can result in long ...

10

A time domain approach to power integrity for printed circuit boards

A time domain approach to power integrity for printed circuit boards

... computational domain is terminated by a uniaxial perfectly matched absorbing boundary layer (UPML) [3] whereby plane waves of arbitrary incidence, frequency and polarization are matched at the boundary to a lossy ...

14

A Dual Parameter Fusion Distributed Optical Fiber Sensor System for Oil and Gas Pipeline Monitoring

A Dual Parameter Fusion Distributed Optical Fiber Sensor System for Oil and Gas Pipeline Monitoring

... spectrum time domain detection combined with coded pulse sequence and Raman scattering spectrum is obtained, which realizes high-resolution temperature measurement and wide-band vibrational wave ...

8

A Perturbation Method for Inverse Scattering in Three Dimensions Based on the Exact Inverse Scattering Equations

A Perturbation Method for Inverse Scattering in Three Dimensions Based on the Exact Inverse Scattering Equations

... In part this situation arises since no exact inverse scattering equations have been developed for the acoustic, elastodynamic or electrodynamic wave equations in the general three dimens[r] ...

9

Towards the Detection of Multiple Reflections in Time-Domain EM Inverse Scattering of Multi-Layered Media

Towards the Detection of Multiple Reflections in Time-Domain EM Inverse Scattering of Multi-Layered Media

... 1) First of all, it is scanned to detect the arrival time of the first echo (many techniques could be used to this end, e.g., see [21], which proposes a development of super-resolution methods particularly ...

15

Terahertz Polariton Dispersion in Uniaxial Optical Crystals

Terahertz Polariton Dispersion in Uniaxial Optical Crystals

... Raman scattering (ISRS) measurement of the LN crystal, Bakker et ...Brillouin scattering (ISBS), and no splitting of dispersion was observed below the lowest-frequency TO mode with A 1 ( z ) symmetry ...

7

On a hybrid spectral exponential Chebyshev method for time fractional coupled Burgers equations on a semi infinite domain

On a hybrid spectral exponential Chebyshev method for time fractional coupled Burgers equations on a semi infinite domain

... In this study we propose a hybrid spectral exponential Chebyshev method (HSECM) for solving time-fractional coupled Burgers equations (TFCBEs). The method is based upon a spectral collection method, ...

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