Download or read book Beyond Line of Sight written by Emil Pocock and published by Amer Radio Relay League. This book was released on 1992 with total page 224 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 Mobile Radio Network Design in the VHF and UHF Bands written by Adrian Graham and published by John Wiley & Sons. This book was released on 2007-01-11 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: An essential element of radio technology and propagation is how to use radio technology and knowledge of radio propagation to design a network that meets the needs of customers. Mobile Radio Network Design in the VHF and UHF Bands provides the technical and fundamental knowledge required for advanced mobile radio network design to achieve this in terms that the engineer will understand, and augments this with essential information gleaned from the authors' extensive experience in mobile radio network design. In this book you will find out how some of the most highly-regarded radio network designers around go about designing radio networks that actually meet the needs of the network subscriber and of the network operator. It describes a well-proven framework that meets the essential need of ensuring that each step of the design project is carried out against known, unique and unambiguous requirements, and that these requirements have been extensively validated against the original requirements. Reveals the secrets behind coverage design, capacity planning, interference analysis and reduction, frequency assignment and verifying that the delivered network actually performs as promised Introduces the concept of documentary deliverables as part of the project and underlines the need for method statements, user requirement, functional, test and design specifications Provides readers with a far greater understanding of the methods and processes necessary to bring about the successful completion of a radio network project Highlights vital aspects of radio network projects that are not always apparent to every engineer, but which may have a vital impact on the success of the project The powerful approach used in this book will help to ensure the successful completion of every project and will be the basis for ensuring contractual compliance at every stage. It is an indispensable resource for all radio network design consultants and engineers, network operator technical managers, radio regulation engineers and military radio network planners.
Download or read book Characterization of a VHF Air ground Channel written by George Allen Hufford and published by . This book was released on 1974 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tabulations of VHF Propagation Data Obtained Over Irregular Terrain at 20 50 and 100 MHz written by and published by . This book was released on 1968 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book VHF Radio Propagation Data for the Cedar Rapids Sterling Anchorage Barrow and Fargo Churchill Test Paths written by George R. Sugar and published by . This book was released on 1960 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past nine years numerous studies of WHF ionospheric scatter propagation have been performed at the National Bureau of Standards and many of the results of this extensive program of research have already been published. However, thus far there has not been any publication of most of the basic signal strength data taken during the program. This note, containing the basic observations for some of the experimental paths, has been prepared in order to make these basic data readily available to those concerned with studies of ionospheric propagation.
Download or read book Checklist of References to Literature on Tropospheric Propagation of UHF VHF and SHF Radio Waves 1929 1959 written by Wilhelm Nupen and published by . This book was released on 1959 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book VHF Propagation written by Ken Neubeck and published by CQ Communications. This book was released on 2004-01-01 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: HAM radio contacts in the VHF HAM bands.
Download or read book Annual Report written by United States. Federal Communications Commission and published by . This book was released on with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interference Predictions for VHF UHF Air Navigation Aids Companion Report to IER 26 ITSA 26 written by Gary D. Gierhart and published by . This book was released on 1970 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Desired to undesired signal ratio predictions for the VHF Omnirange (VOR) and Instrument Landing System (ILS) air navigation aids are presented. The parameters involved in these systems are given first. Propagation mechanisms applicable to VHF/UHF and the calculation of transmission loss and its variability are then discussed, and, third, the statistical nature of the desired-to-undesired signal ratio predictions is explained. The results of the study, presented in graphical form, supplement those given by the authors in an earlier ESSA Technical Report on the same subject. In addition to extending the range of variables previously considered, this report considers the glide slope portion of the ILS.
Download or read book Earthquake Prediction with Radio Techniques written by Masashi Hayakawa and published by John Wiley & Sons. This book was released on 2015-07-02 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest achievements of earthquake prediction via radio communication systems, by the world's leading authority Prof. Hayakawa is one of the world leaders in the field of seismo-electromagnetics for EQ prediction and this area of research is still evolving Presents the fundamentals of radio communications and radio propagation, using the radio noises and propagation anomalies as a precursor of earthquakes Considers the combination of different kinds of seismogenic electromagnetic signals of both natural and artificial character Timely topic following the recent sequence of highly destructive earthquakes around the world
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Introduction to RF Propagation written by John S. Seybold and published by John Wiley & Sons. This book was released on 2005-10-03 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to RF propagation that spans all wireless applications This book provides readers with a solid understanding of the concepts involved in the propagation of electromagnetic waves and of the commonly used modeling techniques. While many books cover RF propagation, most are geared to cellular telephone systems and, therefore, are limited in scope. This title is comprehensive-it treats the growing number of wireless applications that range well beyond the mobile telecommunications industry, including radar and satellite communications. The author's straightforward, clear style makes it easy for readers to gain the necessary background in electromagnetics, communication theory, and probability, so they can advance to propagation models for near-earth, indoor, and earth-space propagation. Critical topics that readers would otherwise have to search a number of resources to find are included: * RF safety chapter provides a concise presentation of FCC recommendations, including application examples, and prepares readers to work with real-world propagating systems * Antenna chapter provides an introduction to a wide variety of antennas and techniques for antenna analysis, including a detailed treatment of antenna polarization and axial ratio; the chapter contains a set of curves that permit readers to estimate polarization loss due to axial ratio mismatch between transmitting and receiving antennas without performing detailed calculations * Atmospheric effects chapter provides curves of typical atmospheric loss, so that expected loss can be determined easily * Rain attenuation chapter features a summary of how to apply the ITU and Crane rain models * Satellite communication chapter provides the details of earth-space propagation analysis including rain attenuation, atmospheric absorption, path length determination and noise temperature determination Examples of widely used models provide all the details and information needed to allow readers to apply the models with confidence. References, provided throughout the book, enable readers to explore particular topics in greater depth. Additionally, an accompanying Wiley ftp site provides supporting MathCad files for select figures in the book. With its emphasis on fundamentals, detailed examples, and comprehensive coverage of models and applications, this is an excellent text for upper-level undergraduate or graduate students, or for the practicing engineer who needs to develop an understanding of propagation phenomena.
Download or read book Propagation of Radiowaves written by L. W Barclay and published by IET. This book was released on 2003 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been fully updated to reflect the latest developments in the field of radio communications. This book introduces the basic concepts and mechanisms of radiowave propagation engineering in both the troposphere and ionosphere, and includes greater emphasis on the needs of digital technologies and new kinds of radio systems.
Download or read book Aeronomy of the Earth s Atmosphere and Ionosphere written by Mangalathayil Ali Abdu and published by Springer Science & Business Media. This book was released on 2011-02-26 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a multi-author treatise on the most outstanding research problems in the field of the aeronomy of the Earth’s atmosphere and ionosphere, encompassing the science covered by Division II of the International Association of Geomagnetism and Aeronomy (IAGA). It contains several review articles and detailed papers by leading scientists in the field. The book is organized in five parts: 1) Mesosphere-Lower Thermosphere Dynamics and Chemistry; 2) Vertical Coupling by Upward Propagating Waves; 3) Ionospheric Electrodynamics and Structuring; 4) Thermosphere- Ionosphere Coupling, Dynamics and Trends and 5) Ionosphere-Thermosphere Disturbances and Modeling. The book consolidates the progress achieved in the field in recent years and it serves as a useful reference for graduate students as well as experienced researchers.
Download or read book The Mobile Radio Propagation Channel written by J. D. Parsons and published by Wiley. This book was released on 1996-03-01 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers in-depth discussions of multipath phenomena and its effects on narrowband and wideband signals. Presents basic information about the mobile radio channel and introduces some fundamental VHF and UHF propagation. Surveys signal strength prediction methods applicable over irregular terrain and in urban, suburban and rural areas as well as methods of channel sounding and simulation.
Download or read book UHF Radio Propagation Data for Low Antenna Heights written by Institute for Telecommunication Sciences and published by . This book was released on 1969 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
