Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 106 for “"wave scattering"”.
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Seismic wave scattering from rough interfaces
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1989.
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Rayleigh wave scattering across step discontinuities
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1980.
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Analytical and numerical techniques for wave scattering
… thesis, we study the mathematical solution of wave scattering problems which describe the behaviour of waves incident on obstacles and are highly relevant to a raft of applications in the aerospace industry. The techniques considered in the present work can be broadly classed into two …
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Elastic wave scattering in laterally inhomogeneous media
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 1991
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Fast methods for inverse wave scattering problems
Inverse wave scattering problems arise in many applications including computerized/diffraction tomography, seismology, diffraction/holographic grating design, object identification from radar singals, and semiconductor quality control. Efficient algorithms exist for some inverse wave scattering …
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Electomagnetic wave scattering by randomly buried particles
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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High-frequency electromagnetic wave scattering from rough surfaces
"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 …
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Acoustic wave scattering from a random ocean bottom
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, and Woods Hole Oceanographic Institution, 1991.
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Semi-analytic time-domain solutions to wave-scattering problems
Scattered waves are constructed in the time domain by explicitly evaluating the inverse Laplace transform integral as a summation of complex residues. The method is applied to two problems: a bead on a semi-infinite string and acoustic scattering by a sphere. In the first problem, the end of an …
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Elastic wave scattering from bounded media with random microstructures
… is utilized to solve the direct and inverse scattering problems of bounded infinite media with random microstructures. The inhomogeneities of the media properties due to their microstructures are assumed to be small. Relatively simple relations are obtained between the mean-square …
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Sound wave scattering by cyclindrical shells with internal structures
Thesis (Ocean. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1995.
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Wave Scattering From Infinite Cylindrical Obstacles of Arbitrary Cross-Section
In this work the scattering of an incident plane wave propagating along a plane perpendicular to the xy-plane is studied. The wave is scattered from an infinitely long cylindrical object of arbitrary cross-section. Due to the arbitrary geometry of the obstacle, a finite differences numerical method …
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Radio Wave Scattering From Random Fluctuations in an Anisotropic Medium
Made available in DSpace on 2014-12-10T19:06:49Z (GMT). No. of bitstreams: 1 7207062.pdf: 4061620 bytes, checksum: 8eaac3319789b7e4433c36bc2a630828 (MD5) Previous issue date: 1971
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Fast algorithms for solving integral equations of electromagnetic wave scattering
… plays an important role in the study of wave scattering and radiation from large and complex objects. This dissertation develops fast numerical algorithms for solving two-dimensional and three-dimensional integral equations of electromagnetic wave scattering. They include: (1) The fast …
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Modelling and active modification of wave scattering in structural networks
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Plane electromagnetic wave scattering by a coated perfectly conducting cylinder
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1989.
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Millimeter wave scattering by rain in an antenna's near field
… accompanies rainfall in a link’s path. Random scattering by rain can adversely affect a propagating wave in two ways. First, it results in attenuation and depolarization of the coherent field which is associated with the forward propagating wave. ln addition to this, random scattering gives …
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Seismic wave scattering and the small scale inhomogeneities in the lithosphere
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1984.
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Analysis and design of wave scattering by weakly non-uniform waveguides
When waves propagate through a medium with small irregularities of the size of the order of many wavelengths, a number of interesting phenomena may happen such as wave localization and large sensitivity of the wave field behavior with respect to the medium irregularity variation. These phenomena …
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