Radio Wave Propagation And Parabolic Equation Modeling
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Radio Wave Propagation And Parabolic Equation Modeling
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Author : Gokhan Apaydin
language : en
Publisher: John Wiley & Sons
Release Date : 2017-08-29
Radio Wave Propagation And Parabolic Equation Modeling written by Gokhan Apaydin and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-29 with Science categories.
An important contribution to the literature that introduces powerful new methods for modeling and simulating radio wave propagation A thorough understanding of electromagnetic wave propagation is fundamental to the development of sophisticated communication and detection technologies. The powerful numerical methods described in this book represent a major step forward in our ability to accurately model electromagnetic wave propagation in order to establish and maintain reliable communication links, to detect targets in radar systems, and to maintain robust mobile phone and broadcasting networks. The first new book on guided wave propagation modeling and simulation to appear in nearly two decades, Radio Wave Propagation and Parabolic Equation Modeling addresses the fundamentals of electromagnetic wave propagation generally, with a specific focus on radio wave propagation through various media. The authors explore an array of new applications, and detail various virtual electromagnetic tools for solving several frequent electromagnetic propagation problems. All of the methods described are presented within the context of real-world scenarios typifying the differing effects of various environments on radio-wave propagation. This valuable text: Addresses groundwave and surface wave propagation Explains radar applications in terms of parabolic equation modeling and simulation approaches Introduces several simple and sophisticated MATLAB scripts Teaches applications that work with a wide range of electromagnetic, acoustic and optical wave propagation modeling Presents the material in a quick-reference format ideal for busy researchers and engineers Radio Wave Propagation and Parabolic Equation Modeling is a critical resource forelectrical, electronics, communication, and computer engineers working on industrial and military applications that rely on the directed propagation of radio waves. It is also a useful reference for advanced engineering students and academic researchers.
La Persuasion De La Charit
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Author : W. Pierre Jacoebée
language : en
Publisher:
Release Date : 1976
La Persuasion De La Charit written by W. Pierre Jacoebée and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with categories.
Parabolic Equation Methods For Electromagnetic Wave Propagation
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Author : Mireille Levy
language : en
Publisher: IET
Release Date : 2000
Parabolic Equation Methods For Electromagnetic Wave Propagation written by Mireille Levy and has been published by IET this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Mathematics categories.
Provides scientists and engineers with a tool for accurate assessment of diffraction and ducting on radio and radar systems. The author gives the mathematical background to parabolic equations modeling and describes simple parabolic equation algorithms before progressing to more advanced topics such as domain truncation, the treatment of impedance boundaries, and the implementation of very fast hybrid methods combining ray-tracing and parabolic equation techniques. The last three chapters are devoted to scattering problems, with application to propagation in urban environments and to radar-cross- section computation. Annotation copyrighted by Book News, Inc., Portland, OR
Radio Wave Propagation And Parabolic Equation Modeling
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Author : Gokhan Apaydin
language : en
Publisher: John Wiley & Sons
Release Date : 2017-10-16
Radio Wave Propagation And Parabolic Equation Modeling written by Gokhan Apaydin and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-16 with Science categories.
An important contribution to the literature that introduces powerful new methods for modeling and simulating radio wave propagation A thorough understanding of electromagnetic wave propagation is fundamental to the development of sophisticated communication and detection technologies. The powerful numerical methods described in this book represent a major step forward in our ability to accurately model electromagnetic wave propagation in order to establish and maintain reliable communication links, to detect targets in radar systems, and to maintain robust mobile phone and broadcasting networks. The first new book on guided wave propagation modeling and simulation to appear in nearly two decades, Radio Wave Propagation and Parabolic Equation Modeling addresses the fundamentals of electromagnetic wave propagation generally, with a specific focus on radio wave propagation through various media. The authors explore an array of new applications, and detail various virtual electromagnetic tools for solving several frequent electromagnetic propagation problems. All of the methods described are presented within the context of real-world scenarios typifying the differing effects of various environments on radio-wave propagation. This valuable text: Addresses groundwave and surface wave propagation Explains radar applications in terms of parabolic equation modeling and simulation approaches Introduces several simple and sophisticated MATLAB scripts Teaches applications that work with a wide range of electromagnetic, acoustic and optical wave propagation modeling Presents the material in a quick-reference format ideal for busy researchers and engineers Radio Wave Propagation and Parabolic Equation Modeling is a critical resource forelectrical, electronics, communication, and computer engineers working on industrial and military applications that rely on the directed propagation of radio waves. It is also a useful reference for advanced engineering students and academic researchers.
Analysis And Modeling Of Radio Wave Propagation
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Author : Christopher John Coleman
language : en
Publisher: Cambridge University Press
Release Date : 2017-01-05
Analysis And Modeling Of Radio Wave Propagation written by Christopher John Coleman and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-05 with Technology & Engineering categories.
This comprehensive guide helps readers understand the theory and techniques needed to analyze and model radio wave propagation in complex environments. All of the essential topics are covered, from the fundamental concepts of radio systems, to complex propagation phenomena. These topics include diffraction, ray tracing, scattering, atmospheric ducting, ionospheric ducting, scintillation, and propagation through both urban and non-urban environments. Emphasis is placed on practical procedures, with detailed discussion of numerical and mathematical methods providing readers with the necessary skills to build their own propagation models and develop their own techniques. MATLAB functions illustrating key modeling ideas are provided online. This is an invaluable resource for anyone wanting to use propagation models to understand the performance of radio systems for navigation, radar, communications, or broadcasting.
Electromagnetic Modeling And Simulation
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Author : Levent Sevgi
language : en
Publisher: John Wiley & Sons
Release Date : 2014-03-13
Electromagnetic Modeling And Simulation written by Levent Sevgi and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-03-13 with Science categories.
This unique book presents simple, easy-to-use, but effective short codes as well as virtual tools that can be used by electrical, electronic, communication, and computer engineers in a broad range of electrical engineering problems Electromagnetic modeling is essential to the design and modeling of antenna, radar, satellite, medical imaging, and other applications. In this book, author Levent Sevgi explains techniques for solving real-time complex physical problems using MATLAB-based short scripts and comprehensive virtual tools. Unique in coverage and tutorial approach, Electromagnetic Modeling and Simulation covers fundamental analytical and numerical models that are widely used in teaching, research, and engineering designs—including mode and ray summation approaches with the canonical 2D nonpenetrable parallel plate waveguide as well as FDTD, MoM, and SSPE scripts. The book also establishes an intelligent balance among the essentials of EM MODSIM: The Problem (the physics), The Theory and Models (mathematical background and analytical solutions), and The Simulations (code developing plus validation, verification, and calibration). Classroom tested in graduate-level and short courses, Electromagnetic Modeling and Simulation: Clarifies concepts through numerous worked problems and quizzes provided throughout the book Features valuable MATLAB-based, user-friendly, effective engineering and research virtual design tools Includes sample scenarios and video clips recorded during characteristic simulations that visually impact learning—available on wiley.com Provides readers with their first steps in EM MODSIM as well as tools for medium and high-level code developers and users Electromagnetic Modeling and Simulation thoroughly covers the physics, mathematical background, analytical solutions, and code development of electromagnetic modeling, making it an ideal resource for electrical engineers and researchers.
Advanced Parabolic Equation Based Propagation Modeling For Train Communication Systems
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Author : Xingqi Zhang
language : en
Publisher:
Release Date : 2018
Advanced Parabolic Equation Based Propagation Modeling For Train Communication Systems written by Xingqi Zhang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
With the continuing expansion of metropolitan areas, the demand for efficient mass transportation systems is increasing accordingly. An emerging wireless technology for rail signaling, which can significantly improve the efficiency of light rail, subway, and high-speed train transit systems, is communication-based train control (CBTC). In CBTC systems, trains communicate wirelessly with wayside access points, which are connected to a central control station. A prerequisite for the deployment of such systems is the existence of a suitable propagation model, which can provide accurate path-loss predictions of corresponding wireless channels. This is of particular importance due to the safety-critical nature of rail signaling and the rapid, cost-effective nature of system deployment. This thesis presents an advanced propagation modeling tool, based on parabolic equation methods, to characterize radio wave propagation in realistic, complex railway environments. Concrete guidelines are provided on how to extract input models from point cloud data and what level of detail is necessary and sufficient to obtain results agreeing with measured data. Moreover, enhanced techniques dealing with geometrical variations of guideways and practical antenna patterns are presented. The accuracy and efficiency of the developed propagation model are demonstrated in various practical scenarios. Furthermore, a robust approach on extracting surrogate models from arbitrary tunnel geometries is proposed. The extracted surrogate models can lead to significant computational savings, especially in optimization studies where repetitive calls of the propagation model are required. The thesis also presents two hybrid propagation modeling techniques, aimed at achieving a better trade-off between accuracy, efficiency, and generality, via using the advantages of one method to compensate for the limitations of another and vice versa. Moreover, effects of uncertainty in the environment and experimental setup on the variability of predicted signal strength are investigated. A new approach that can incorporate wall roughness into the model is introduced. It can be applied to tunnels with arbitrary cross-section geometries and large-scale surface roughness. Finally, a physics-based optimization strategy is presented to optimize the placement of access points for train communication systems. The validity and usefulness of the proposed methodology are demonstrated in an actual deployment site of CBTC systems.
Radio Propagation Measurement And Channel Modelling
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Author : Sana Salous
language : en
Publisher: John Wiley & Sons
Release Date : 2013-03-08
Radio Propagation Measurement And Channel Modelling written by Sana Salous and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-08 with Technology & Engineering categories.
While there are numerous books describing modern wireless communication systems that contain overviews of radio propagation and radio channel modelling, there are none that contain detailed information on the design, implementation and calibration of radio channel measurement equipment, the planning of experiments and the in depth analysis of measured data. The book would begin with an explanation of the fundamentals of radio wave propagation and progress through a series of topics, including the measurement of radio channel characteristics, radio channel sounders, measurement strategies, data analysis techniques and radio channel modelling. Application of results for the prediction of achievable digital link performance would be discussed with examples pertinent to single carrier, multi-carrier and spread spectrum radio links. This work would address specifics of communications in various different frequency bands for both long range and short range fixed and mobile radio links.
Radiowave Propagation
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Author : Curt Levis
language : en
Publisher: John Wiley & Sons
Release Date : 2010-06-01
Radiowave Propagation written by Curt Levis and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-06-01 with Technology & Engineering categories.
An accessible student-oriented approach to radiowave propagation Propagation-the process whereby a signal is conveyed between transmitter and receiver-has a profound influence on communication systems design. Radiowave Propagation provides an overview of the physical mechanisms that govern electromagnetic wave propagation in the Earth's troposphere and ionosphere. Developed in conjunction with a graduate-level wave propagation course at The Ohio State University, this text offers a balance of physical and empirical models to provide basic physical insight as well as practical methods for system design. Beginning with discussions of propagation media properties, plane waves, and antenna and system concepts, successive chapters consider the most important wave propagation mechanisms for frequencies ranging from LF up to the millimeter wave range, including: Direct line-of-sight propagation through the atmosphere Rain attenuation The basic theory of reflection and refraction at material interfaces and in the Earth's atmosphere Reflection, refraction, and diffraction analysis in microwave link design for a specified terrain profile Empirical path loss models for point-to-point ground links Statistical fading models Standard techniques for prediction of ground wave propagation Ionospheric propagation, with emphasis on the skywave mechanism at MF and HF and on ionospheric perturbations for Earth-space links at VHF and higher frequencies A survey of other propagation mechanisms, including tropospheric scatter, meteor scatter, and propagation effects on GPS systems Radiowave Propagation incorporates fundamental materials to help senior undergraduate and graduate engineering students review and strengthen electromagnetic physics skills as well as the most current empirical methods recommended by the International Telecommunication Union. This book can also serve as a valuable teaching and reference text for engineers working with wireless communication, radar, or remote sensing systems.
An Atmospheric Sensitivity And Validation Study Of The Variable Terrain Radio Parabolic Equation Model Vtrpe
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Author : Matthew K. Doggett
language : en
Publisher:
Release Date : 1997-03-01
An Atmospheric Sensitivity And Validation Study Of The Variable Terrain Radio Parabolic Equation Model Vtrpe written by Matthew K. Doggett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-03-01 with Tropospheric radio wave propagation categories.
The Variable Terrain Radio Parabolic Equation (VTRPE) computer model is a powerful and flexible program that provides calculations of the radar propagation conditions of the atmosphere. It is limited however, by the accuracy and resolution of the input data. This study quantifies the sensitivity of the VTRPE model to the accuracy and resolution of the atmospheric parameters that go into it. Also, two case studies are examined to test the utility of VTRPE in operational use. The sensitivity to measurements of pressure, temperature, and humidity was found to be dependent on the meteorological environment. In standard and subrefractive environments, average values of Root Mean Squared Error in calculating propagation pathloss were greatest for measurement errors in humidity. While the overall RMSE averaged only 0.5% to 5%, in certain regions the errors in calculating pathloss were as high as 20%. VTRPE was used to calculate possible height errors when birds were detected at long ranges from a WSR-88D radar in a ducting environment. While the radar assumes a standard atmosphere when calculating height, results from VTRPE suggest that this resulted in possible height errors of over 3 km. Another case study of detected anomalous propagation was examined to determine the effects of multiple soundings in the VTRPE calculation of propagation pathloss. In this example, the effect of assuming a homogeneous atmosphere resulted in propagation pathloss errors of up to 30%.
