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Author : Adel Marzougui
Publisher :
ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.:/5 (313 download)
Download or read book High Frequency Electromagnetic Waves Scattering from Rough Surfaces written by Adel Marzougui and published by . This book was released on 1993 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Adel Marzougui
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (774 download)
Download or read book High-frequency Electromagnetic Wave Scattering from Rough Surfaces written by Adel Marzougui and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 approximation by considering the mutual interactions between the irregularities of the surface (i.e., shadowing and multiple scattering are accounted for). In addition, the SBR technique is more efficient than the Method of Moments (MoM) solution, because it does not involve matrix equations, which makes solving the full three-dimensional problem possible. The numerical results, obtained by implementing the SBR technique in solving the scattering problem by one-dimensional random rough surfaces, are compared to the Kirchhoff approximation solutions and the method of moments solutions. The agreement between the SBR technique results and the MoM solution results proves the feasibility and the accuracy of this new approach. Furthermore, the SBR technique is proven to produce more accurate results than the Kirchhoff approximation when shadowing and multiple scattering effects are important. Finally, the SBR technique is implemented in solving the scattering problem by two-dimensional periodic rough surfaces. The results obtained prove the capability of the SBR method in handling the full three-dimensional problem.
Author : F. G. Bass
Publisher : Elsevier
ISBN 13 : 1483187756
Total Pages : 541 pages
Book Rating : 4.4/5 (831 download)
Download or read book Wave Scattering from Statistically Rough Surfaces written by F. G. Bass and published by Elsevier. This book was released on 2013-10-22 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wave Scattering from Statistically Rough Surfaces discusses the complications in radio physics and hydro-acoustics in relation to wave transmission under settings seen in nature. Some of the topics that are covered include radar and sonar, the effect of variations in topographic relief or ocean waves on the transmission of radio and sound waves, the reproduction of radio waves from the lower layers of the ionosphere, and the oscillations of signals within the earth-ionosphere waveguide. The book begins with some fundamental idea of wave transmission theory and the theory of random processes as used to rough surfaces and to wave fields. This discussion is followed by an analysis of the average fields of sound and electromagnetic waves. A section on spatial correlation characteristics in the approximation of small perturbations is then given. Another chapter of the text explains the Kirchhoff method. The book will provide useful information to physicists, mechanical engineer, students, and researchers in the field of acoustics.
Author : Petr Beckmann
Publisher : Pergamon
ISBN 13 :
Total Pages : 520 pages
Book Rating : 4.F/5 ( download)
Download or read book The Scattering of Electromagnetic Waves from Rough Surfaces written by Petr Beckmann and published by Pergamon. This book was released on 1963 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nicolas Pinel
Publisher : John Wiley & Sons
ISBN 13 : 1118579461
Total Pages : 122 pages
Book Rating : 4.1/5 (185 download)
Download or read book Electromagnetic Wave Scattering from Random Rough Surfaces written by Nicolas Pinel and published by John Wiley & Sons. This book was released on 2013-12-02 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic wave scattering from random rough surfaces is an active, interdisciplinary area of research with myriad practical applications in fields such as optics, acoustics, geoscience and remote sensing. Focusing on the case of random rough surfaces, this book presents classical asymptotic models used to describe electromagnetic wave scattering. The authors begin by outlining the basic concepts relevant to the topic before moving on to look at the derivation of the scattered field under asymptotic models, based on the Kirchhoff-tangent plane, in order to calculate both the scattered field and the statistical average intensity. More elaborated asymptotic models are also described for dealing with specific cases, and numerical results are presented to illustrate these models. Comparisons with a reference numerical method are made to confirm and refine the theoretical validity domains. The final chapter derives the expressions of the scattering intensities of random rough surfaces under the asymptotic models. Its expressions are given for their incoherent contributions, from statistical calculations. These results are then compared with numerical computations using a Monte-Carlo process, as well as with experimental models, for sea surface backscattering. Contents 1. Electromagnetic Wave Scattering from Random Rough Surfaces: Basics. 2. Derivation of the Scattered Field under Asymptotic Models. 3. Derivation of the Normalized Radar Cross-Section under Asymptotic Models. APPENDIX 1. Far-Field Scattered Fields under the Method of Stationary Phase. APPENDIX 2. Calculation of the Scattering Coefficients under the GO for 3D Problems. About the Authors Nicolas Pinel worked as a Research Engineer at the IETR (Institut d’Electronique et de Télécommunications de Rennes) laboratory at Polytech Nantes (University of Nantes, France) before joining Alyotech Technologies in Rennes, France, in July 2013. His research interests are in the areas of radar and optical remote sensing, scattering and propagation. In particular, he works on asymptotic methods of electromagnetic wave scattering from random rough surfaces and layers. Christophe Bourlier works at the IETR (Institut d’Electronique et de Télécommunications de Rennes) laboratory at Polytech Nantes (University of Nantes, France) and is also a Researcher at the French National Center for Scientific Research (CNRS) on electromagnetic wave scattering from rough surfaces and objects for remote sensing applications and radar signatures. He is the author of more than 160 journal articles and conference papers.
Author : Piergiorgio Uslenghi
Publisher : Elsevier
ISBN 13 : 0323142435
Total Pages : 812 pages
Book Rating : 4.3/5 (231 download)
Download or read book Electromagnetic Scattering written by Piergiorgio Uslenghi and published by Elsevier. This book was released on 2012-12-02 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic Scattering is a collection of studies that aims to discuss methods, state of the art, applications, and future research in electromagnetic scattering. The book covers topics related to the subject, which includes low-frequency electromagnetic scattering; the uniform asymptomatic theory of electromagnetic edge diffraction; analyses of problems involving high frequency diffraction and imperfect half planes; and multiple scattering of waves by periodic and random distribution. Also covered in this book are topics such as theories of scattering from wire grid and mesh structures; the electromagnetic inverse problem; computational methods for transmission of waves; and developments in the use of complex singularities in the electromagnetic theory. Engineers and physicists who are interested in the study, developments, and applications of electromagnetic scattering will find the text informative and helpful.
Author : Leung Tsang
Publisher : John Wiley & Sons
ISBN 13 : 0471463795
Total Pages : 432 pages
Book Rating : 4.4/5 (714 download)
Download or read book Scattering of Electromagnetic Waves written by Leung Tsang and published by John Wiley & Sons. This book was released on 2004-04-07 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Kevin A. O'Donnell
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (288 download)
Download or read book Electromagnetic Wave Scattering from Characterized Rough Surfaces written by Kevin A. O'Donnell and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Elie George Nacouzi
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.:/5 (651 download)
Download or read book Electromagnetic Wave Scattering from a Rough Surface written by Elie George Nacouzi and published by . This book was released on 1980 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Eric Baldauf
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.:/5 (259 download)
Download or read book Computer Aided Design-based High Frequency Electromagnetic Wave Scattering from Complex Bodies written by John Eric Baldauf and published by . This book was released on 1991 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work investigates the use of high frequency electromagnetic scattering techniques, such as the physical theory of diffraction (PTD) and the geometrical theory of diffraction (GTD) and the shooting and bouncing rays (SBR) method combined with computer aided design (CAD) compatible geometries, to perform the electromagnetic scattering analysis of complex arbitrary bodies. The use of CAD formats such as solid modelled bodies and bodies modelled with triangular patch surface elements allows the scattering analysis of arbitrary bodies which can be constructed using CAD packages. The scattering analyses are applied to radar cross section (RCS) problems, cavity radiation problems, and antenna pattern predictions of complex electrically large structures, thereby showing that it is feasible to accurately approximate the electromagnetic wave scattering from general complex bodies using CAD techniques and high frequency scattering techniques. First the RCS of large targets which involve multiple geometric optics (GO) interactions are investigated by comparing the RCS calculated using CAD designed radar targets and the SBR method and PTD for targets such as trihedral corner reflectors and an idealized military vehicle model with the experimentally obtained RCS. The comparisons between the calculated and measured results demonstrate that the SBR and PTD can provide accurate approximations of the RCS for targets which have complex multiple GO interactions. Second, the problem of interior cavity radiation for closed cavities is approached using a ray tracing and GO method based on the SBR method and triangular surface patch described geometies. Comparisons between the ray-based calculations and more exact techniques such as the method of moments (MM) for two-dimensional cavities demonstrate that ray-based methods can provide good approximations for the field behavior inside of nonresonant cavities. A three-dimensional case is shown to demonstrate that this technique can be easily applied to three-dimensional problems. Third, the GTD is applied to the problem of three-dimensional electromagnetic wave propagation in complex environments. These environments are described using triangular patch surface models compatible with CAD packages. This technique is applied to two different types of propagation problems: antenna pattern prediction in complex realistic environments and long distance radio wave propagation. Comparisons between theoretical GTD results and those for experimental and other theoretical methods demonstrate that using GTD and CAD based models, the electromagnetic wave propagation can be accurately predicted for complex problems.
Author : Luca Rossi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (81 download)
Download or read book Efficient Methods for the Computation of High Frequency Electromagnetic Wave Scattering from Piecewise Smooth Surfaces Using the Integral Equation Formulation written by Luca Rossi and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alexander G. Voronovich
Publisher : Springer Science & Business Media
ISBN 13 : 3642599362
Total Pages : 239 pages
Book Rating : 4.6/5 (425 download)
Download or read book Wave Scattering from Rough Surfaces written by Alexander G. Voronovich and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the fIrst edition of this book was published in the 1994, the theory of wave scattering from rough surfaces has continued to develop intensively. The community of researchers working in this area keeps growing, which provides justifIcation for issuing this second edition. In preparing the second edition, I was challenged by the problem of se lecting new material from the many important results obtained recently. Even tually, a new section was added to the central Chap. 6 of this book. This sec tion describes the operator expansion technique put forward by M. Milder, which conforms well with the general approach adopted in the book and which to my mind is one of the most promising. Remote sensing of the terrain and ocean surface represents one of the most important and interesting challenges to the theory of wave scattering from rough surfaces. Rapid progress in electronics results in sensors with new capabilities. New powerful computers and data communication systems allow more sophisticated data processing techniques. What information about soil or air-sea interaction processes can be obtained from gigaflops of data streaming from air-or space-borne radars? To use this information efficiently, one cannot rely entirely on heuristic approaches and needs adequate theory. I hope that this book will contribute to progress in this important area.
Download or read book The Scattering of High Frequency Electromagnetic Radiation from the Ocean Surface, an Analysis Based on a Bistatic Ground Wave Radar Configuration written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. Mark Haugland
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.:/5 (238 download)
Download or read book Scattering of Electromagnetic Waves from Coated Rough Surfaces Full Wave Approach written by S. Mark Haugland and published by . This book was released on 1991 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Tillman Austin
Publisher :
ISBN 13 :
Total Pages : 486 pages
Book Rating : 4.3/5 (91 download)
Download or read book Electromagnetic Wave Scattering by Power-law Surfaces written by Richard Tillman Austin and published by . This book was released on 1994 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Hatziioannou
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (894 download)
Download or read book The Scattering of Electromagnetic Waves by Rough Surfaces written by John Hatziioannou and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Staffan Höijer
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (186 download)
Download or read book An investigation of electromagnetic wave scattering from rough surfaces, based on a comparison between vectorial and scalar Kirchhoff methods written by Staffan Höijer and published by . This book was released on 1975 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
