Numerical Parametric Study of Electromagnetic Wave Scattering by Buried Dielectric Land Mines PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages : 95
Book Description
The unimoment method is applied to solve the electromagnetic scattering by a buried dielectric finite cylinder simulating a land mine. Computed results are reported at frequencies from 400 MHz to 1400 MHz at 100 MHz intervals. The dielectric constants of the ground are considered to be dispersive which simulates soil with 5%, 10% and 20% water content. Results are computed for the scattered electric and magnetic fields which are presented in terms of the cylindrical components of E and noH at a distance of 1 in. to 4 in. above the ground at 1 in. intervals. The numerical results are computed along the positive x-axis for each azimuthal mode. The fields at points on the positive x-axis may be obtained by summing the modal fields directly. Fields at points other than the positive x-axis may be obtained by summing the modal fields multiplied by the proper azimuthal function. Sample results are given in the report and the complete data are stored on magnetic tape. This report include documentation for the tapes.
Author: Publisher: ISBN: Category : Languages : en Pages : 95
Book Description
The unimoment method is applied to solve the electromagnetic scattering by a buried dielectric finite cylinder simulating a land mine. Computed results are reported at frequencies from 400 MHz to 1400 MHz at 100 MHz intervals. The dielectric constants of the ground are considered to be dispersive which simulates soil with 5%, 10% and 20% water content. Results are computed for the scattered electric and magnetic fields which are presented in terms of the cylindrical components of E and noH at a distance of 1 in. to 4 in. above the ground at 1 in. intervals. The numerical results are computed along the positive x-axis for each azimuthal mode. The fields at points on the positive x-axis may be obtained by summing the modal fields directly. Fields at points other than the positive x-axis may be obtained by summing the modal fields multiplied by the proper azimuthal function. Sample results are given in the report and the complete data are stored on magnetic tape. This report include documentation for the tapes.
Author: K. K. Mei Publisher: ISBN: Category : Languages : en Pages : 20
Book Description
The objective of this research is to study the feasibility of computing electromagnetic wave scattering by objects which are buried or partially buried in a lossy ground. The datas obtained through computer solutions of the related Maxwell's Equations can be applied to detection of plastic land mines, tunnels and natural resources. The method used in this investigation is based on the Unimoment method, a unique hybrid of analytical and numerical methods. The extension of the method to include lossy ground half-space was made possible by the development of special eigenfunctions which include the continuity of the air-ground interface. Results were obtained for scattering by buried body of revolution, buried body of revolution with arbitrary orientation and two-body scattering.
Author: Leung Tsang Publisher: Wiley-Interscience ISBN: 9780471388005 Category : Science Languages : en Pages : 705
Book Description
A timely and authoritative guide to the state of the art of wave scattering Scattering of Electromagnetic Waves offers in three volumes a complete and up-to-date treatment of wave scattering by random discrete scatterers and rough surfaces. Written by leading scientists who have made important contributions to wave scattering over three decades, this new work explains the principles, methods, and applications of this rapidly expanding, interdisciplinary field. It covers both introductory and advanced material and provides students and researchers in remote sensing as well as imaging, optics, and electromagnetic theory with a one-stop reference to a wealth of current research results. Plus, Scattering of Electromagnetic Waves contains detailed discussions of both analytical and numerical methods, including cutting-edge techniques for the recovery of earth/land parametric information. The three volumes are entitled respectively Theories and Applications, Numerical Simulation, and Advanced Topics. In the second volume, Numerical Simulations, Leung Tsang (University of Washington) Jin Au Kong (MIT), Kung-Hau Ding (Air Force Research Lab), and Chi On Ao (MIT) cover: Layered media simulations Rough surface and volume scattering simulations Dense media models and simulations Electromagnetic scattering by discrete scatterers and a buried object Scattering by vertical cylinders above a surface Electromagnetic waves scattering by vegetation Computational methods and programs used for performing various simulations
Author: Leung Tsang Publisher: John Wiley & Sons ISBN: 0471463795 Category : Technology & Engineering Languages : en Pages : 432
Book Description
A timely and authoritative guide to the state of the art of wave scattering Scattering of Electromagnetic Waves offers in three volumes a complete and up-to-date treatment of wave scattering by random discrete scatterers and rough surfaces. Written by leading scientists who have made important contributions to wave scattering over three decades, this new work explains the principles, methods, and applications of this rapidly expanding, interdisciplinary field. It covers both introductory and advanced material and provides students and researchers in remote sensing as well as imaging, optics, and electromagnetic theory with a one-stop reference to a wealth of current research results. Plus, Scattering of Electromagnetic Waves contains detailed discussions of both analytical and numerical methods, including cutting-edge techniques for the recovery of earth/land parametric information. The three volumes are entitled respectively Theories and Applications, Numerical Simulation, and Advanced Topics. In the third volume, Advanced Topics, Leung Tsang (University of Washington) and Jin Au Kong (MIT), cover: * Two-dimensional random rough surface scattering * Kirchhoff and related methods for rough surface scattering * Analytic theory of volume scattering based on cascading of layers * Analytic wave theory for medium with permittivity fluctuations * Multiple scattering theory for discrete scatterers * Quasicrystalline approximation in dense media scattering * Dense media scattering * Backscattering enhancement
Author: Publisher: ISBN: Category : Research Languages : en Pages : 1212
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
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Author: Albert M. Bottoms
Author: K. K. Mei
Author: Belvoir Research and Development Center (U.S.)
Author: Terry Michael Kvam
Author: U.S. Army Mobility Equipment Research & Development Command
Author: Leung Tsang
Author: Leung Tsang
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