• Aucun résultat trouvé

Inverse scattering problems problems

Some inverse scattering problems on star-shaped graphs

Some inverse scattering problems on star-shaped graphs

... of inverse scattering problems on star- shaped graphs, having in mind certain applications such as the fault-detec- tion/diagnosis of electrical networks through reflectometry-type ...of ...

30

Direct and inverse solvers for scattering problems from locally perturbed infinite periodic layers

Direct and inverse solvers for scattering problems from locally perturbed infinite periodic layers

... and inverse solvers for scattering problems from locally perturbed infinite pe- riodic layers Keywords: inverse problem, sampling methods, periodic metamaterial structures, scattering ...

181

How to solve inverse scattering problems without knowing the source term: a three-step strategy

How to solve inverse scattering problems without knowing the source term: a three-step strategy

... of inverse scattering problems always presupposed knowledge of the incident wave- field and require repeated computations of the forward problem, for which knowing the source term is ...solve ...

20

Identification of generalized impedance boundary conditions in inverse scattering problems

Identification of generalized impedance boundary conditions in inverse scattering problems

... impedance problems (µ = 0) has been studied by several authors [11, 16], where for instance optimal logarithmic stability is ob- ...the inverse map by using the adjoint state ...the inverse map and ...

28

Development and use of higher-order asymptotics to solve inverse scattering problems

Development and use of higher-order asymptotics to solve inverse scattering problems

... surface, en fonction de la topologie et des mat´eriaux qui constituent le sous-sol, afin ensuite de pr´evoir les cons´equences d’une telle interaction onde-surface. Pour les probl`emes inverses, au contraire, la ...

195

On the Validation of the Linear Sampling Method in Electromagnetic Inverse Scattering Problems

On the Validation of the Linear Sampling Method in Electromagnetic Inverse Scattering Problems

... Unité de recherche INRIA Rocquencourt Domaine de Voluceau - Rocquencourt - BP 105 - 78153 Le Chesnay Cedex France Unité de recherche INRIA Futurs : Domaine de Voluceau - Rocquencourt - B[r] ...

42

On the development and use of higher-order asymptotics for solving inverse scattering problems.

On the development and use of higher-order asymptotics for solving inverse scattering problems.

... surface, en fonction de la topologie et des mat´eriaux qui constituent le sous-sol, afin ensuite de pr´evoir les cons´equences d’une telle interaction onde-surface. Pour les probl`emes inverses, au contraire, la ...

195

Reconstruction methods for inverse problems for Helmholtz-type equations

Reconstruction methods for inverse problems for Helmholtz-type equations

... some inverse problems for the gauge-covariant Helmholtz equation, whose particular cases include the Schrödinger equation for a charged elementary particle in a magnetic field and the time-harmonic wave ...

179

Uniqueness, reconstruction, stability for some two-dimensional inverse problems

Uniqueness, reconstruction, stability for some two-dimensional inverse problems

... some inverse boundary value problems in two dimensions are stud- ...The problems considered are the Calderón problem and the Gel’fand-Calderón problem in the single and multi-channel ...

191

Bayesian inverse problems with Monte Carlo forward models

Bayesian inverse problems with Monte Carlo forward models

... Monte Carlo developed for medical imaging [ 10 , 9 , 4 ]. This path recycling scheme sends many paths once through a reference atmosphere and then stores only those that hit the detector. Then, to simulate detector hits ...

26

Inverse problems for Einstein manifolds

Inverse problems for Einstein manifolds

... to scattering theory, at least in the point of view of Melrose ...the scattering matrix or scattering map in this case, and more generally for asymptotically hyperbolic manifolds, is an operator S : ...

15

The convex algebraic geometry of linear inverse problems

The convex algebraic geometry of linear inverse problems

... Linear Inverse Problems Venkat Chandrasekaran, Benjamin Recht, Pablo ...linear inverse prob- lems in which the underlying model of interest has simple algebraic ...

6

Parallelization of Hierarchical Matrix Algorithms for Electromagnetic Scattering Problems

Parallelization of Hierarchical Matrix Algorithms for Electromagnetic Scattering Problems

... corinne.ancourt@mines-paristech.fr 7 Informatics Institute, University of Amsterdam, Amsterdam, Netherlands c.grelck@uva.nl Abstract. Numerical solution methods for electromagnetic scattering problems lead ...

34

Lévy Processes in Finance: Inverse Problems and Dependence Modelling

Lévy Processes in Finance: Inverse Problems and Dependence Modelling

... L´evy models by Fourier transform. This section is the only one of the first chapter to contain new results: we propose original improvements to this method and obtain estimates for the truncation and discretization ...

201

Time Reversed Absorbing Condition: Application to inverse problems

Time Reversed Absorbing Condition: Application to inverse problems

... The outline of the paper is as follows. In sections 2.1 and 2.2 we introduce the principle of the TRAC method both in the time dependent and harmonic domains. We present in section 2.3 two applications of the method in ...

21

INVERSE PROBLEMS FOR SCHRÖDINGER EQUATIONS WITH UNBOUNDED POTENTIALS

INVERSE PROBLEMS FOR SCHRÖDINGER EQUATIONS WITH UNBOUNDED POTENTIALS

... Schrödinger equation, unbounded potential, Dirichlet-to-Neumann map, uniqueness, stability inequality, Borg-Levinson type theorem.. The author is supported by the grant ANR-17-CE40-0029 [r] ...

27

Some inverse problems around the tokamak Tore Supra

Some inverse problems around the tokamak Tore Supra

... The purpose of this paper is to formulate alternative and original methods for the resolution of the free boundary problem. Two different approaches are considered: a first one making use of Complex Analysis tools and a ...

30

Mean squared error minimization for inverse moment problems

Mean squared error minimization for inverse moment problems

... Figure 7: Trefoil region K (left) and ((K d \ K) ∪ (K \ K d )) for d ∈ {3, 5, 8, 10} (from left to right). 4.2 Approximating solutions of differential equations Another important class of moment problems arises ...

28

Pocket Guide to Solve Inverse Problems with GlobalBioIm

Pocket Guide to Solve Inverse Problems with GlobalBioIm

... 3.2. LinOp Class A particular class of map objects contains linear operators H : R N → R M that satisfy H{αf + g} = αH{f } + H{g} (4) for all scalar α and vectors f ∈ R N and g ∈ R N . Linear operators are generally ...

21

Physics-driven inverse problems made tractable with cosparse regularization

Physics-driven inverse problems made tractable with cosparse regularization

... When a direct method is used to evaluate the linear least squares step the complexity analysis is more delicate. Since the matrix H A is banded for both acoustic and EEG problems, we know that regular Cholesky ...

15

Show all 2858 documents...

Sujets connexes