In this paper, we present a hybrid finite difference/finite volume method and apply it to solve an automotive electromagnetic compatibility (EMC) problem. The principles of the numerical schemes are described. Simple examples used compare with difference methods alone in terms accuracy computing speed. EMC problem its modeling then presented. Finally, sample comparisons between measurements calculations both electric fields S-parameters antenna cables given.

This paper presents a finite element method with high spatial order for solving the Maxwell equations in time domain. In first part, we provide mathematical background of method. Then, discuss advantages new scheme compared to classical finite-difference time-domain (FDTD) Several examples show using different kinds problems. Comparisons terms accuracy and CPU between this method, FDTD finite-volume methods are given as well.

In this paper, we present the $hp$-convergence analysis of a non-dissipative high-order discontinuous Galerkin method on unstructured hexahedral meshes using mass-lumping technique to solve time-dependent Maxwell equations. particular, underline spectral convergence (in sense that when solutions and data are very smooth, discretization is unlimited order). Moreover, see choice non-standard approximate space (for formulation) with absence dissipation can imply loss spatial convergence....

Numerical electromagnetic models based on a typical automotive immunity measurement scenario have been built from vehicle manufacturer's CAD data and compared with corresponding measurements complete vehicle. The simulations were carried out in the time-domain using TLM FDTD techniques. Despite many limitations of both numerical measurements, are found to provide satisfactory representation measured field coupled into passenger compartment nearby broadband antenna.

This paper describes the application of a finite volume method in time domain, for studying scattering "complex" object. The principle scheme is explained. A code allows conformal meshing and composite materials can be considered with no particular problem. Different comparisons are made other numerical methods, order to validate introduction imperfectly conducting our model, possibility applying dielectric constant some parts computational space. thin-wire formalism has been introduced...

A discontinuous Galerkin (DG) method and some physical models added to this treat electromagnetic compatibility problems are presented. This is very efficient in terms of CPU-time memory usage because the use a high-order spatial approximation on general unstructured meshes. Some comparisons with other schemes presented validate proposed point out advantages DG method. In particular, improvements like local time-stepping strategy have been studied.

In this paper an inverse formulation to evaluate the dielectric values of a concrete sample by using radar measurements in context buildings security is proposed. To solve problem, optimization strategy based upon Gauss-Newton method presented and, finally, it applied on several configurations experimental measurements.

The detection and localization of persons through obstacles is becoming a great stake in both civil military fields. One the most important applications certainly sensing walls which can be very useful safety, peace-keeping law enforcement operations. Radar systems are likely to provide an adequate answer this kind problem various processing methods nowadays studied considered reach final solution. In paper, we focus on ultra-wideband radar techniques applied human sensing. particular,...

Modeling complex networks of cables inside structures and modeling disjoint objects connected by large computational domains with respect to the wavelength are two problems that currently present many difficulties.In this paper, we propose a 1D/3D hybrid method in time domain solve efficiently these kinds problems.The method, based upon finite difference schemes, couples Maxwell's equations evaluate electromagnetic fields 3D transmission line currents voltages on cables.Some examples...

Abstract This paper focuses on the study and development of an efficient numerical method designed to simulate radar cross section (RCS) objects buried in lossy ground illuminated by a plane wave. The primary objective aligns with overarching challenge detecting targets using airborne system. In this scenario, source antenna illuminates considered 3D domain, sensors receive scattered field from targets. To enable accurate simulations, proposed tool utilizes Cartesian/unstructured mesh...

In electromagnetic compatibility (EMC) context, we are interested in developing new ac- curate methods to solve efficiently and accurately Maxwell’s equations the time domain. Indeed, usual such as FDTD or FVTD present im- portant dissipative and/or dispersive errors which prevent obtain a good numerical approximation of physical solution for given industrial scene unless use mesh with very small cell size. To avoid this problem, schemes like Discontinuous Galerkin (DG) method, based on...