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Showing 1 to 20 of 50 for “"Scattering problem"”.

  1. The Two-Dimensional Inverse Scattering Problem

    Imbriale, William AnthonyUniversity of Illinois at Urbana-Champaign2015

    Made available in DSpace on 2015-05-12T21:43:53Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7000880.PDF: 1782345 bytes, checksum: 339349fcde22988e0d1adbbebba4d80c (MD5) Previous issue date: 1969

    uiuc Repository record

  2. The one-dimensional inverse scattering problem.

    Portinari, João CandidoMassachusetts Institute of Technology1966

    Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1966. Ph.D.

    mit Repository record

  3. Nonlinear Acoustics and an Inverse Scattering Problem

    Schofield, JohnUniversity of East Anglia2016

    … This Ph.D is concerned with wave propagation problems. The main focus is on nonlinear acoustics, looking at sonic boom propagation in a physically realistic atmosphere, whilst a secondary part will look at the problem of landmine detection and how to improve the target detection rates. The …

    east-anglia Repository record

  4. Optimal Solution to the Two-Dimensional Scattering Problem

    Daniel, Sam MordochaiUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-10T19:06:41Z (GMT). No. of bitstreams: 1 7121099.pdf: 5660101 bytes, checksum: 434a7e25f3404d3ddde4048f70d06db2 (MD5) Previous issue date: 1971

    uiuc Repository record

  5. STUDY OF A DIRECT SAMPLING METHOD FOR THE INVERSE MEDIUM SCATTERING PROBLEM

    Weerasinghe, Natasha

    mtu Repository record

  6. High-frequency electromagnetic wave scattering from rough surfaces

    Marzougui, AdelUniversity of Illinois at Urbana-Champaign2011

    "A new technique in solving the rough surface scattering problem is presented. The method employed, entitled the ""shooting and bouncing rays"" (SBR) method, is based on a combination of the geometric optics (GO) theory and the physical optics (PO) theory. The SBR method improves on the Kirchhoff …

    uiuc Repository record

  7. A Class of Robust and Efficient Iterative Methods for Wave Scattering Problems

    Adams, Robert JohnVirginia Tech1998

    … integral equation formulations of time harmonic scattering problems. The primary result of this effort has been the development of several advanced numerical techniques which enable the dense matrix-vector products associated with the iterative solution of boundary integral equations to be …

    vt Repository record

  8. Single and multiple electromagnetic scattering by dielectric obstacles from a resonance perspective

    Riley, Douglas J.Virginia Polytechnic Institute and State University1986

    … theory of wave propagation through a multiple scattering environment and the SEM. Since the SEM is generally considered a theory for surface currents on conducting scatterers, extensions are made which permit, under certain conditions, a singularity expansion representation of the …

    vt Repository record

  9. Broadband microwave inverse scattering: Theory and experiment

    Weedon, William HaroldUniversity of Illinois at Urbana-Champaign2011

    … for performing broadband time-domain inverse scattering. The inverse scattering problem is very important for a number of application areas including nondestructive evaluation, geophysical probing, medical imaging and military target identification. Emphasis is placed on the use of microwaves …

    uiuc Repository record

  10. Electromagnetic Inverse Scattering Problems for Strong Scatterers

    Otto, Gregory PatrickUniversity of Illinois at Urbana-Champaign2014

    … application of electromagnetic waves to inverse scattering problems can provide information about a distant object or allow an object to be analyzed without using invasive procedures. This dissertation develops two-dimensional theories for solving the inverse scattering problem of strong …

    uiuc Repository record

  11. Forward and inverse scattering problems in the time domain

    Moghaddam, MahtaUniversity of Illinois at Urbana-Champaign2011

    … 2}$-dimensional electromagnetic forward scattering problem in the time domain is developed, which circumvents the use of three-dimensional arrays to solve the vector wave problem. The method is based on calculating the three-dimensional fields as a summation of Fourier-transformed …

    uiuc Repository record

  12. A Single-Field Finite-Difference Time-Domain Formulations for Electromagnetic Simulations

    Aydin, Gokhan

    … updating equations for solving electromagnetic problems is derived. The formulation uses a single-field expression for full-wave solution. This formulation can provide numerical results similar to those obtained using the traditional formulation with less required computer resources.</p> …

    syracuse-diss Repository record

  13. Wave propagation in complex media, scattering theory, and application to seismic imaging

    Fleury, ClementColorado School of Mines. Arthur Lakes Library2012

    … is essentially equivalent to solving an inverse scattering problem in structurally complex media. Conventional migration algorithms rely on linearized inversion schemes and assume single-scattering dominance. The primary focus of this thesis is an alternative nonlinear scattering-based approach …

    colo-mines Repository record

  14. Optimal Control for an Impedance Boundary Value Problem

    Bondarenko, OleksandrVirginia Tech2010

    We consider the analysis of the scattering problem. Assume that an incoming time harmonic wave is scattered by a surface of an impenetrable obstacle. The reflected wave is determined by the surface impedance of the obstacle. In this paper we will investigate the problem of choosing the surface …

    vt Repository record

  15. Fast multipole acceleration of periodic Green's function using spherical harmonics and Ewald summation

    Wei, MichaelUniversity of Illinois at Urbana-Champaign2015

    … multipole algorithm (FMA) for solving a periodic scattering problem using method of moments (MOM). The difference between the standard integral equations (EFIE and MFIE) and the ones used for periodic geometry is the use of periodic Green's function (PGF) over free-space Green's function (FGF). …

    uiuc Repository record

  16. An analog/hybrid computer solution of electromagnetic scattering problems

    Coffey, Edgar L.Virginia Tech1976

    … may be used to solve exterior electromagnetic scattering problems was made. Analytical methods, moment methods, subsectional methods, probabilistic methods, integral equation methods, and analog/hybrid computer methods were considered in the study to determine the best method to use in a …

    vt Repository record

  17. A Spacetime Discontinuous Galerkin Finite-Element Method for Elastodynamic Analysis

    Yin, LinUniversity of Illinois at Urbana-Champaign2015

    … model to investigate a series of elastodynamic problems in both one and two spatial dimensions. The first study focuses on the problems that exhibit discontinuities or shocks. The new method delivers high accurate results. The second study investigates the convergence properties of the numerical …

    uiuc Repository record

  18. Numerical and Analytical Studies of Electromagnetic Waves: Hermite Methods, Supercontinuum Generation, and Multiple Poles in the SEM

    Chen, Xi

    … consists of three parts: Hermite methods, scattering from a lossless sphere, and analysis of supercontinuum generation. Hermite methods are a new class of arbitrary order algorithms to solve partial differential equations (PDE). In the first chapter, we discuss the fundamentals of Hermite …

    unm Repository record

  19. ΣΚΕΔΑΣΗ ΘΕΡΜΟΕΛΑΣΤΙΚΩΝ ΚΥΜΑΤΩΝ ΣΕ ΣΥΝΘΕΤΑ ΥΛΙΚΑ ΚΑΙ ΠΡΟΣΔΙΟΡΙΣΜΟΣ ΤΩΝ ΘΕΡΜΟΜΗΧΑΝΙΚΩΝ ΤΟΥΣ ΙΔΙΟΤΗΤΩΝ

    Κωστόπουλος, Βασίλης, Kostopoulos, VasiliosUniversity of Patras1988

    … IS GIVING THE INTEGRAL REPRESENTATION OF THE PROBLEM. VIA ASYMPTOTIC ANALYSIS OF THESE INTEGRAL REPRESENTATIONS, NORMALIZED SPHERICAL SCATTERING AMPLITUDES ARE INTRODUCED FOR THE DISPLACEMENT AS WELL AS THE TEMPERATURE FIELD. THE THERMOELASTIC SCATTERING CROSS SECTIONS ARE ALSO INTRODUCED. …

    greece Repository record

  20. Advanced Array Imaging for Breast and Prostate Sonography

    Vaidyanathan, Ravi Shankar2010

    … from scattered radiation is known as the inverse scattering problem. The inverse scattering problem is known by several names like reflectivity tomography [3] and diffraction tomography [5, 6, 7] etc. Scattering refers to the effects on wave propagation due to an inhomogeneous medium. Since the …

    utswmed Repository record

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