Download or read book Radio Wave Propagation in an Inhomogeneous Atmosphere written by James R. Wait and published by . This book was released on 1959 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ON RADIO WAVE PROPAGATION IN AN INHOMOGENEOUS ATMOSPHERE written by James R. Wait and published by . This book was released on 1958 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radio Wave Propagation in an Inhomogeneous Atmosphere NBS Technical Note 24 written by James R Wait and published by Hassell Street Press. This book was released on 2021-09-09 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Radiowave Propagation written by Curt Levis and published by John Wiley & Sons. This book was released on 2010-06-01 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book A Survey and Bibliography of Recent Research in the Propagation of VLF Radio Waves written by James R. Wait and published by . This book was released on 1960 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radio Wave Propagation and Parabolic Equation Modeling written by Gokhan Apaydin and published by John Wiley & Sons. This book was released on 2017-08-29 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book On the Theory of Radio Wave Propagation Over Inhomogeneous Earth written by Kōichi Furutsu and published by . This book was released on 1962 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radio Wave Propagation written by United States. Office of Scientific Research and Development. National Defense Research Committee and published by . This book was released on 1949 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiowellen, Frequenzverteilung, Funkwellen.
Download or read book Radio Wave Propagation and the Ionosphere Propagation of Electromagnetic Waves Near the Earth written by Yakov L. Alpert and published by Springer. This book was released on 1974 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characteristics of the Lower Atmosphere Influencing Radio Wave Propagation written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1984 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radio Wave Propagation Fundamentals Second Edition written by Artem Saakian and published by Artech House. This book was released on 2020-12-31 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: This completely updated second edition of an Artech House classic provides a thorough introduction to the basic principles of electromagnetic wave propagation of radio frequencies in real-world conditions, fully updated by including new achievements in theory and technology. It serves as an invaluable daily reference for practitioners in the field and as a complete, organized text on the subject. This comprehensive resource covers a wide range of essential topics, from the classification of radio waves, electromagnetic wave theory, and antennas for RF radio links, to the impact of the earth surface on the propagation of ground waves, atmospheric affects in radio wave propagation, and radio wave reception. The book explores the propagation of the ground radio waves, namely the waves that propagate in vicinity of the earth's surface (e.g., guided by that interface), without involvement of any atmospheric effects. Specifics of the high-frequency (HF) radio propagation due to reflections from ionospheric layers is studied, based on commonly used models of the ionospheric vertical profiles. Scattering of the radio waves of UHF and higher frequency bands from the random variations of the tropospheric refraction index (from tiny air turbulences) are also considered by using the principles of statistical radio-physics. Analysis of propagation conditions on real propagation paths, including analysis of the power budget of the VHF/UHF link to assure its stability (percentage of availability within observation time frame), terrestrial, broadcast, mobile, and satellite RF links are presented. The engineering design of the cellular networks, including LTE 4G, 5G and upcoming higher generations is explored. HF propagation predictions for extremely long-range links design for commercial and military applications are explained. Packed with examples and problems, this book provides a theoretical background for astrophysical, aeronomy and geophysical instrumentation design.
Download or read book Ionospheric Radio Propagation written by Kenneth Davies and published by . This book was released on 1965 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ground Wave Propagation in an Ionized Atmosphere with Arbitrary Variation of the Conductivity with Altitude written by J. Ralph Johler and published by . This book was released on 1970 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The atmosphere can apparently be ionized to such a degree that the ground wave is disturbed, as a result of, for example, a nuclear event, and ionizing radiation of sufficient intensity to overcome the ion-ion recombination processes may cause the ions to accumulate near the surface of the ground. Gamma radiation from the fallout of a nuclear weapon may produce such ionization for a considerable time after the nuclear event. The problem is similar to that of terrestrial radio wave propagation via the ionosphere, except that in the former case the ionization has a maximum near the surface of the ground and decreases exponentially with altitude. In other words, we have an upside down ionosphere to consider. A new theoretical approach to such ground wave problems based on methods of numerical analysis has been developed for computer application. The computer computation concept is discussed and sample computations based on the fallout model profile are presented. A particular fallout model based on data given in the U.S. Atomic Energy Commission’s handbook on “The Effects of Nuclear Weapons” is considered in some detail, and the effect of an ionization profile (ion number density as a function of altitude) on the propagation of the ground wave is ascertained. A physically possible but not likely extra attenuation of 12 dB at 100 km distance is noted.
Download or read book Parabolic Equation Methods for Electromagnetic Wave Propagation written by Mireille Levy and published by IET. This book was released on 2000 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book A Method of Investigating Radio wave Propagation in an Inhomogeneous Magnetoactive Ionosphere written by A. N. Kazantsev and published by . This book was released on 1968 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: An optical geometry method is proposed for investigating radio-wave propagation. This method is based on the solution of ordinary differential equations systems of the first order describing ray trajectories in the three-dimensional inhomogeneous magneto-active ionosphere A derivation of systems is given for ordinary differential equations of the first order, on the basis of which expressions are obtained in the approximation of optical geometry for the time-averaged quadratic field intensity of a spheroidal wave (point source), flat wave, and a wave packet. The formulas derived by this method for the time-averaged square of field intensity coincide with the first expansion term of the asymptotic solution of the multidimensional scalar wave equation into a uniformly converging series. The theory developed in this work may be applied for investigating radio-wave propagation in an inhomogeneous magneto-active ionosphere; for calculating the field intensity of the radio waves emitted by artificial earth satellites; for calculating the trajectories and delay time of whistling atmospherics for study of the refraction and the Doppler frequency shift in the ionosphere (also in the troposphere) and for the solution of other problems. (Author).
Download or read book Radio Wave Propagation written by John A. Richards and published by Springer Science & Business Media. This book was released on 2008-01-22 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work treats the essential elements of radio wave propagation without requiring recourse to advanced electromagnetic concepts and equations. However, it provides sufficient detail to allow those concerned with wireless systems to acquire quickly a practical working knowledge of the important concepts. Radio wave propagation is placed in a practical context by considering the design aspects of communications systems at microwave frequencies. A fuller consideration of the electromagnetic properties of materials is given late in the book rather than as an introductory chapter.
Download or read book Radio Wave Propagation and the Ionosphere Propagation of electromagnetic waves near the Earth written by I︠A︡kov Lʹvovich Alʹpert and published by . This book was released on 1974 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
