High Frequency Electromagnetic Propagation Scattering Codes

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High Frequency Electromagnetic Propagation/Scattering Codes

Author :
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis High Frequency Electromagnetic Propagation/Scattering Codes by :

Download or read book High Frequency Electromagnetic Propagation/Scattering Codes written by and published by . This book was released on 2005 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of our effort was to develop computational methods for constructing high-frequency asymptotic solutions in scattering on perfectly conducting objects. The emphasis of the first stage of our work was to describe high frequency phenomena in terms of numerically implemented evolution of wave-fronts associated with the propagating waves. The wave-front evolution algorithm is implemented for the leading high frequency mechanisms including: free-space propagation, reflection on smooth surfaces, wave-front splitting at the shadow boundary, generation and propagation of edge diffracted wave-fronts, and surface wave propagation. The second stage of our work was directed towards developing novel fast rigorous (direct or iterative) solution methods based on construction of economical parameterization of high frequency solutions in terms of basis functions defined on large supports. The wave-front evolution technique developed in the first stage provides a numerical prescription for the selection and determination the parameters of the postulated analytical representation of such basis functions. The numerical prescription together with numerical tools constructed during this effort will constitute an important element of the planned future, high frequency solution technique employing basis functions defined on large supports.

A High Frequency Electromagnetic Scattering Prediction Code Using Shooting and Bouncing Rays

Author : D. J. Andersh
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis A High Frequency Electromagnetic Scattering Prediction Code Using Shooting and Bouncing Rays by : D. J. Andersh

Download or read book A High Frequency Electromagnetic Scattering Prediction Code Using Shooting and Bouncing Rays written by D. J. Andersh and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Novel Techniques for Solving High-Frequency Electromagnetic Scattering Problems on Complete Aircraft

Author : Vladimir Oliker
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (455 download)

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Book Synopsis Novel Techniques for Solving High-Frequency Electromagnetic Scattering Problems on Complete Aircraft by : Vladimir Oliker

Download or read book Novel Techniques for Solving High-Frequency Electromagnetic Scattering Problems on Complete Aircraft written by Vladimir Oliker and published by . This book was released on 1998 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work a method for constructing wave propagation paths on aircraft modeled with nonuniform rational bi-cubic splines has been proposed and investigated. Procedures for dealing with artificial discontinuities due to geometric mis-matches of spline patches have been developed and implemented in numerical codes.

High-Frequency Electromagnetic Techniques

Author : Asoke K. Bhattacharyya
Publisher : Wiley-Interscience
ISBN 13 :
Total Pages : 520 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis High-Frequency Electromagnetic Techniques by : Asoke K. Bhattacharyya

Download or read book High-Frequency Electromagnetic Techniques written by Asoke K. Bhattacharyya and published by Wiley-Interscience. This book was released on 1995-08-11 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic engineers often deal with problems in which the surfaces of the geometrics being studied do not conform to the eleven coordinate systems in which wave equations are separable. In such cases, when exact solutions of wave equations don't apply, approximate methods must suffice.

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 1572 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Quick Finite Elements for Electromagnetic Waves

Author : Giuseppe Pelosi
Publisher : Artech House
ISBN 13 : 1596933461
Total Pages : 311 pages
Book Rating : 4.5/5 (969 download)

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Book Synopsis Quick Finite Elements for Electromagnetic Waves by : Giuseppe Pelosi

Download or read book Quick Finite Elements for Electromagnetic Waves written by Giuseppe Pelosi and published by Artech House. This book was released on 2009 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: The classic 1998 Artech House book, Quick Finite Elements for Electromagnetic Waves, has now been revised and expanded to bring you up-to-date with the latest developments in the Field. You find brand new discussions on finite elements in 3D, 3D resonant cavities, and 3D waveguide devices. Moreover, the second edition supplies you with MATLAB code, making this resource easier to comprehend and use for your projects in the field. This practical book and accompanying software enables you to quickly and easily work out challenging microwave engineering and high-frequency electromagnetic problems using the finite element method (FEM). Using clear, concise text and dozens of real-world application examples, the book provides a detailed description of FEM implementation, while the software provides the code and tools needed to solve the three major types of EM problems: guided propagation, scattering, and radiation. With this unique book and software set in hand, you can compute the dispersion diagram of arbitrarily shaped inhomogeneous isotropic lossless or lossy guiding structures, analyze E- and H-plane waveguide discontinuities and devices, and understand the reflection from and transmission through simple 2D and 3D inhomogeneous periodic structures. CD-ROM Included! Easy-to-use finite element software contains ready-made MATLAB and FORTRAN source code that you can use immediately to solve a wide range of microwave and EM problems. The package is fully compatible with Internet "freeware, " so you can perform advanced engineering functions without having to purchase expensive pre- and post-processing tools.

Fusion Energy Update

Author :
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Fusion Energy Update by :

Download or read book Fusion Energy Update written by and published by . This book was released on 1979 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

U.S. Government Research Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 350 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis U.S. Government Research Reports by :

Download or read book U.S. Government Research Reports written by and published by . This book was released on 1963 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Through-the-Wall Radar Imaging

Author : Moeness G. Amin
Publisher : CRC Press
ISBN 13 : 1439814775
Total Pages : 604 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Through-the-Wall Radar Imaging by : Moeness G. Amin

Download or read book Through-the-Wall Radar Imaging written by Moeness G. Amin and published by CRC Press. This book was released on 2017-12-19 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through-the-wall radar imaging (TWRI) allows police, fire and rescue personnel, first responders, and defense forces to detect, identify, classify, and track the whereabouts of humans and moving objects. Electromagnetic waves are considered the most effective at achieving this objective, yet advances in this multi-faceted and multi-disciplinary technology require taking phenomenological issues into consideration and must be based on a solid understanding of the intricacies of EM wave interactions with interior and exterior objects and structures. Providing a broad overview of the myriad factors involved, namely size, weight, mobility, acquisition time, aperture distribution, power, bandwidth, standoff distance, and, most importantly, reliable performance and delivery of accurate information, Through-the-Wall Radar Imaging examines this technology from the algorithmic, modeling, experimentation, and system design perspectives. It begins with coverage of the electromagnetic properties of walls and building materials, and discusses techniques in the design of antenna elements and array configurations, beamforming concepts and issues, and the use of antenna array with collocated and distributed apertures. Detailed chapters discuss several suitable waveforms inverse scattering approaches and revolve around the relevance of physical-based model approaches in TWRI along with theoretical and experimental research in 3D building tomography using microwave remote sensing, high-frequency asymptotic modeling methods, synthetic aperture radar (SAR) techniques, impulse radars, airborne radar imaging of multi-floor buildings strategies for target detection, and detection of concealed targets. The book concludes with a discussion of how the Doppler principle can be used to measure motion at a very fine level of detail. The book provides a deep understanding of the challenges of TWRI, stressing its multidisciplinary and phenomenological nature. The breadth and depth of topics covered presents a highly detailed treatment of this potentially life-saving technology.

Handbook of Antennas in Wireless Communications

Author : Lal Chand Godara
Publisher : CRC Press
ISBN 13 : 1351835920
Total Pages : 894 pages
Book Rating : 4.3/5 (518 download)

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Book Synopsis Handbook of Antennas in Wireless Communications by : Lal Chand Godara

Download or read book Handbook of Antennas in Wireless Communications written by Lal Chand Godara and published by CRC Press. This book was released on 2018-10-03 with total page 894 pages. Available in PDF, EPUB and Kindle. Book excerpt: The move toward worldwide wireless communications continues at a remarkable pace, and the antenna element of the technology is crucial to its success. With contributions from more than 30 international experts, the Handbook of Antennas in Wireless Communications brings together all of the latest research and results to provide engineering professionals and students with a one-stop reference on the theory, technologies, and applications for indoor, hand-held, mobile, and satellite systems. Beginning with an introduction to wireless communications systems, it offers an in-depth treatment of propagation prediction and fading channels. It then explores antenna technology with discussion of antenna design methods and the various antennas in current use or development for base stations, hand held devices, satellite communications, and shaping beams. The discussions then move to smart antennas and phased array technology, including details on array theory and beamforming techniques. Space diversity, direction-of-arrival estimation, source tracking, and blind source separation methods are addressed, as are the implementation of smart antennas and the results of field trials of systems using smart antennas implemented. Finally, the hot media topic of the safety of mobile phones receives due attention, including details of how the human body interacts with the electromagnetic fields of these devices. Its logical development and extensive range of diagrams, figures, and photographs make this handbook easy to follow and provide a clear understanding of design techniques and the performance of finished products. Its unique, comprehensive coverage written by top experts in their fields promises to make the Handbook of Antennas in Wireless Communications the standard reference for the field.

ERDA Energy Research Abstracts

Author : United States. Energy Research and Development Administration
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

ERDA Energy Research Abstracts

Author : United States. Energy Research and Development Administration. Technical Information Center
Publisher :
ISBN 13 :
Total Pages : 724 pages
Book Rating : 4.3/5 (129 download)

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Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration. Technical Information Center

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1976 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere

Author : Robert A. Fisher
Publisher :
ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere by : Robert A. Fisher

Download or read book Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere written by Robert A. Fisher and published by . This book was released on 1989 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

College of Engineering

Author : University of Michigan. College of Engineering
Publisher : UM Libraries
ISBN 13 :
Total Pages : 806 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis College of Engineering by : University of Michigan. College of Engineering

Download or read book College of Engineering written by University of Michigan. College of Engineering and published by UM Libraries. This book was released on 1983 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:

University of Michigan Official Publication

Author : University of Michigan
Publisher : UM Libraries
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis University of Michigan Official Publication by : University of Michigan

Download or read book University of Michigan Official Publication written by University of Michigan and published by UM Libraries. This book was released on 1988 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each number is the catalogue of a specific school or college of the University.

Author :
Publisher :
ISBN 13 :
Total Pages : 528 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Newsletter by :

Download or read book Newsletter written by and published by . This book was released on 1995 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Development of Numerical Codes for Modeling Electromagnetic Behavior at High Frequencies Near Large Objects

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781720479314
Total Pages : 54 pages
Book Rating : 4.4/5 (793 download)

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Book Synopsis Development of Numerical Codes for Modeling Electromagnetic Behavior at High Frequencies Near Large Objects by : National Aeronautics and Space Administration (NASA)

Download or read book Development of Numerical Codes for Modeling Electromagnetic Behavior at High Frequencies Near Large Objects written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study into the problem of determining electromagnetic solutions at high frequencies for problems involving complex geometries, large sizes and multiple sources (e.g. antennas) has been initiated. Typical applications include the behavior of antennas (and radiators) installed on complex conducting structures (e.g. ships, aircrafts, etc..) with strong interactions between antennas, the radiation patterns, and electromagnetic signals is of great interest for electromagnetic compatibility control. This includes the overall performance evaluation and control of all on-board radiating systems, electromagnetic interference, and personnel radiation hazards. Electromagnetic computational capability exists at NASA LaRC, and many of the codes developed are based on the Moment Method (MM). However, the MM is computationally intensive, and this places a limit on the size of objects and structures that can be modeled. Here, two approaches are proposed: (i) a current-based hybrid scheme that combines the MM with Physical optics, and (ii) an Alternating Direction Implicit-Finite Difference Time Domain (ADI-FDTD) method. The essence of a hybrid technique is to split the overall scattering surface(s) into two regions: (a) a MM zone (MMZ) which can be used over any part of the given geometry, but is most essential over irregular and "non-smooth" geometries, and (b) a PO sub-region (POSR). Currents induced on the scattering and reflecting surfaces can then be computed in two ways depending on whether the region belonged to the MMZ or was part of the POSR. For the MMZ, the current calculations proceed in terms of basis functions with undetermined coefficients (as in the usual MM method), and the answer obtained by solving a system of linear equations. Over the POSR, conduction is obtained as a superposition of two contributions: (i) currents due to the incident magnetic field, and (ii) currents produced by the mutual induction from conduction within the MMZ. This effectively