Download or read book The Scattering of Electromagnetic Waves by Perfectly Reflecting Objects of Complex Shapes written by F. V. Schultz and published by . This book was released on 1968 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the contract was to carry out a theoretical investigation of the scattering of an incident plane electromagnetic wave by perfectly conducting bodies of somewhat irregular shape. The results were to be applicable in the so-called resonance region, where the major dimensions and of the order of a free-space wavelength in size. The objects which were investigated included a cone of finite height, a circular cylinder of finite length, a cube, a finned circular cylinder of infinite length, a finned sphere, and a hemisphere. Solutions and numerical results for the radar cross section were obtained for the finite cone, the finned cylinder, and the finned sphere. The solution for the hemisphere has been obtained and numerical results are in the process of being secured. Some attention also was given to the problem of altering the scattering characteristics of reflecting objects without altering their essential configurations. Results were obtained for scattering by a long wire. (Author).
Download or read book The Scattering of Electromagnetic Waves by Perfectly Reflecting Objects of Complex Shape written by F. V. Schultz and published by . This book was released on 1968 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Scattering of Electromagnetic Waves by Perfectly Reflecting Objects of Complex Shape written by F. V. Schultz and published by . This book was released on 1963 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research was devided into three areas. First, a theoretical and numerical analysis was made to determine the radar cross-section of a perfectly-conducting cone of finite height. Rigorous electromagnetic theory was used in the solution. The incomplete results obtained are compared with experimental and asymptotic theoretical results obtained elsewhere. The second area of research involved an introductory investigation of methods of reducing the radar cross-section of a body by the use of reactive elements. The third area was concerned with an investigation of methods of reducing the radar cross-section of an object by appropriately shaping the object. This investigation was carried out by the use of a novel numerical method. (Author).
Download or read book Electromagnetic Wave Scattering by Aerial and Ground Radar Objects written by Oleg I. Sukharevsky and published by CRC Press. This book was released on 2018-09-03 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic Wave Scattering by Aerial and Ground Radar Objects presents the theory, original calculation methods, and computational results of the scattering characteristics of different aerial and ground radar objects. This must-have book provides essential background for computing electromagnetic wave scattering in the presence of different kinds of irregularities, as well as Summarizes fundamental electromagnetic statements such as the Lorentz reciprocity theorem and the image principle Contains integral field representations enabling the study of scattering from various layered structures Describes scattering computation techniques for objects with surface fractures and radar-absorbent coatings Covers elimination of "terminator discontinuities" appearing in the method of physical optics in general bistatic cases Includes radar cross-section (RCS) statistics and high-range resolution profiles of assorted aircrafts, cruise missiles, and tanks Complete with radar backscattering diagrams, echo signal amplitude probability distributions, and other valuable reference material, Electromagnetic Wave Scattering by Aerial and Ground Radar Objects is ideal for scientists, engineers, and researchers of electromagnetic wave scattering, computational electrodynamics, and radar detection and recognition algorithms.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Determination of the Electromagnetic Scattering from a Cavity backed Plane Surface written by John K. Schindler and published by . This book was released on 1964 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Scattering by Finned Objects written by Gary Michael Ruckgaber and published by . This book was released on 1968 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solutions are obtained for the scattering of an incident plane electro-magnetic wave by each of the following perfectly conducting objects: (a) an infinite circular cylinder having an attached sector, which, in the limiting case of zero sector angle, becomes a circular cylinder having a fin, (b) an infinite circular cylinder having two coplanar fins, which, in the limiting case of zero cylinder radius, becomes a strip, (c) a sphere having a fin, which, in the limiting case of zero sphere radius, becomes a circular disc. In each problem, the scatterer is described by sections of constant-coordinate surfaces and the space surrounding the scatterer is partitioned into several regions. The electromagnetic field in each region is expanded in a complete set of Hansen vector wave functions with unknown expansion coefficients. These sets of expansion coefficients are then determined by satisfying the boundary conditions. A review of scattering by the circular cylinder and sphere is also presented. Numerical results are obtained for scattering by the one-finned cylinder, the finned sphere, and circular disc. For the one-finned cylinder and the finned sphere, the results show the effect of the fin on the back scattering by the cylinder and the sphere, respectively. In the case of the circular disc, the results for the back-scattering radar cross section agree with the values given by the solution of W. Andrejewski and that of physical optics. (Author).
Download or read book Scattering Characteristics of Aerial and Ground Radar Objects written by Oleg I. Sukharevsky and published by CRC Press. This book was released on 2024-06-24 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents computations for various types of aerial and ground objects. It contains a brief explanation of the theoretical calculation methods used for obtaining scattering characteristics of these objects. It provides working examples for the analysis of electromagnetic wave scattering processes by different objects. Scattering Characteristics of Aerial and Ground Radar Objects is divided in two sections. The first section includes scattering characteristics for different aerial objects: aircrafts, helicopters, transport and passenger airplanes, unmanned aerial vehicles, and missiles. The second section contains data about scattering for many ground objects such as tanks, surface-to-air missile systems, ground radars, and other military objects. In total, the book contains actual data for 63 aerial objects (fighters, attack aircraft, bombers, long-range radar detection aircraft, transport aircraft, helicopters, unmanned aerial vehicles, and cruise missiles) and 18 ground objects, among which are anti-aircraft missile systems and tanks. This book contains data obtained by computations such as circular diagrams of radar backscattering; mean and median radar cross section values of various objects; probability distributions of echo signal amplitude given various parameters of illumination and various kinds of underlying surfaces (for ground objects). Also, as an example, the scattering characteristics for one surface ship are given. This book will be a valuable reference for scientists, engineers, and researchers of electromagnetic wave scattering, computational electrodynamics, and those working on radar detection and recognition algorithms for aerial and and ground radar targets.
Download or read book Fundamentals of the Physical Theory of Diffraction written by Pyotr Ya. Ufimtsev and published by John Wiley & Sons. This book was released on 2007-02-09 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first complete and comprehensive description of the modern Physical Theory of Diffraction (PTD) based on the concept of elementary edge waves (EEWs). The theory is demonstrated with the example of the diffraction of acoustic and electromagnetic waves at perfectly reflecting objects. The derived analytic expressions clearly explain the physical structure of the scattered field and describe in detail all of the reflected and diffracted rays and beams, as well as the fields in the vicinity of caustics and foci. Shadow radiation, a new fundamental component of the field, is introduced and proven to contain half of the total scattered power.
Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 1416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Series written by and published by . This book was released on 1964 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Scattering and the Modification of Scattering of Waves from a Long Wire written by Chin-Lin Chen and published by . This book was released on 1968 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem of the scattering of waves by a long, thin metallic wire is studied. The Wiener-Hopf technique is used to solve the resulting integral equation. In Part I of this report, the case of a plane wave, with arbitrary angle of incidence, impinging upon an unloaded wire is considered. Explicit and rather simple expressions for the induced current, the far field pattern and the back-scattering cross sections are obtained. Numerical results are in reasonable agreement with existing experimental data. The modification of the scattering of normally incident plane waves by a loaded wire is investigated in Part II. The result shows that for short wires, the back-scattering cross sections may be modified effectively by central impedance loading, while for long wires, the modification is rather difficult to achieve. To nullify the back-scattering cross section, it is necessary to use active loading, if kh> 3.6. A physical explanation is also presented.
Download or read book The Pakistan Engineer written by and published by . This book was released on 1968-05 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radar Cross Section Handbook written by George T. Ruck and published by Springer. This book was released on 1970 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Moment Methods in Antennas and Scattering written by Robert C. Hansen and published by Artech House Antenna Library. This book was released on 1990 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text attempts to give the reader an understanding of the key developments in moment methods and the early history of this development. It provides over 45 key papers in the field, many of which are from non-IEEE sources.
Download or read book Government Reports Index written by and published by . This book was released on 1969 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book OAR Cumulative Index of Research Results written by United States. Air Force. Office of Aerospace Research and published by . This book was released on 1963 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
