Analysis And Modeling Of Radio Wave Propagation

Author: Christopher John Coleman
Editor: Cambridge University Press
ISBN: 131681307X
File Size: 17,95 MB
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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.

Radio Propagation Measurement And Channel Modelling

Author: Sana Salous
Editor: John Wiley & Sons
ISBN: 1118502329
File Size: 67,37 MB
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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.

Scientific And Technical Aerospace Reports

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ISBN:
File Size: 18,56 MB
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Journal Of Research Of The National Bureau Of Standards

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File Size: 45,68 MB
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Physics Based Modeling Of Wave Propagation For Terrestrial And Space Communications

Author: Feinian Wang
Editor:
ISBN:
File Size: 76,56 MB
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Nuclear Science Abstracts

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ISBN:
File Size: 53,47 MB
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Radiowave Propagation

Author: Curt Levis
Editor: John Wiley & Sons
ISBN: 0470542950
File Size: 52,41 MB
Format: PDF, Mobi
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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.

Antennas And Wave Propagation

Author: Pedro Pinho
Editor: BoD – Books on Demand
ISBN: 178923624X
File Size: 16,99 MB
Format: PDF
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Antennas and radio propagation are continuously and rapidly evolving and new challenges arise every day. As a result of these rapid changes the need for up-to-date texts that address this growing field from an interdisciplinary perspective persists. This book, organized into nine chapters, presents new antenna designs and materials that will be used in the future, due to the trend for higher frequencies, as well as a bird's eye view of some aspects related to radio propagation channel modeling. The book covers the theory but also the practical aspects of technology implementation in a way that is suitable for undergraduate and graduate-level students, as well as researchers and professional engineers.

Principles Of Communication Systems Simulation With Wireless Applications

Author: William H. Tranter
Editor: Prentice Hall Communications E
ISBN:
File Size: 10,14 MB
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This volume presents an overview of computer-based simulation models and methodologies for communication systems. Topics covered include probability, random, process, and estimation theory and roles in the design of computer-based simulations.

Radio Wave Propagation Fundamentals

Author: Artem Saakian
Editor:
ISBN: 9781630818449
File Size: 39,21 MB
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Arctic Radio Wave Propagation

Author: University of Alaska (College). Geophysical Institute
Editor:
ISBN:
File Size: 32,49 MB
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U S Government Research Development Reports

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File Size: 25,43 MB
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Foundations Of Radio For Scientists And Technologists

Author: Christopher John Coleman
Editor: Cambridge University Press
ISBN: 1108470947
File Size: 56,41 MB
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An in-depth, physics-based introduction to the science and engineering of radio for non-specialists.

International Conference On Remote Sensing And Wireless Communications Rswc 2014

Author: John Kong
Editor: DEStech Publications, Inc
ISBN: 160595151X
File Size: 23,38 MB
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International Conference on Remote Sensing and Wireless Communications (RSWC 2014) will be held from February 22nd to 23rd, 2014 in Shanghai, China. RSWC 2014 will bring together top researchers from Asian Pacific areas, North America, Europe and around the world to exchange research results and address open issues in all aspects of Remote Sensing and Wireless Communications. The RSWC 2014 welcomes the submission of original full research papers, short papers, posters, workshop proposals, tutorials, and industrial professional reports.

Performance Analysis Of Path Loss Models

Author: Purno Mohon Ghosh
Editor: LAP Lambert Academic Publishing
ISBN: 9783659168208
File Size: 79,85 MB
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Various path-loss models of radio wave propagation are compared in this work. Path-loss with different distances are calculated by using Hata-Okumura, Walfisch-Ikegami and Lee models at different environment. The calculated results are used to design a suitable cellular link. It is observed from the compared results that the Walfisch-Ikegami models is more appropriate in urban area for designing a suitable cellular link on the other hand Hata-Okumura model for suburban and rural areas. A suitable cellular link is designed for Rajshahi City Corporation, Bangladesh, that divided into 7 cell reuse pattern in 13 clusters by using Walfisch-Ikegami model. The optimum values of co-channel reuse ratio 4.58 and co-channel interference ratio is 17.35 dB. The cell radius is 1.25 Km and co-channel distance is 5.7 Km. It was also observed that the co-channel reuse ratio is exponentially correlated to the co-channel interference ratio. BER depend on SNR and information rate. It was also observed that BER performance is improved by 23.08 dB in the case of BPSK from 16PSK at SNR 6 dB.

Soviet Bloc Research In Geophysics Astronomy And Space

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ISBN:
File Size: 11,15 MB
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Development Of Field Propagation Model For Urban Area

Author: Purnima K Sharma
Editor: Anchor Academic Publishing
ISBN: 3960671261
File Size: 70,70 MB
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Wireless communication is one of the most dynamic and vibrant areas of technology development in the communication field today. It has been found that severe climatic conditions disturb the propagation of electromagnetic signals at higher frequencies (greater than 30 MHz). The disturbance is mainly due to molecular absorption by oxygen for frequencies ranging between 60 and 118 GHz and due to water vapour in 22, 183 and 325 GHz bands. Rain and fog has the most significant impact, since the size of the rain drops is of the order of the wavelength of the transmitted signal. This results in energy absorption by the rain drops themselves, and as a secondary effect energy is scattered by the drops. The frequency selective absorption characteristics of the atmosphere can be approximated by a transfer function. In most of the practical channels when the signal propagates through the atmosphere the effect of many factors on the signal has to be considered along with the free space propagation channel assumption. The main objective of this study is, therefore, to find out whether, and how, the different climatic conditions are influencing radio wave propagation in GSM frequency bands in general and in Narnaul, Haryana (India) in particular. To carry out this investigation, the records of radio wave propagation along with path loss during different climatic conditions have been analyzed. On the strength of these analyses, a propagation path loss model has been developed by proposing suitable correction factors due to different climatic conditions. The validation of this developed path loss model has been verified by taking reference models and by applying practically in different urban areas. The effect of these climatic conditions on the link budget has also been analyzed.

Effects Of The Aurora On Radio Wave Propagation

Author: Stanford University. Stanford Electronics Laboratories. Radioscience Laboratory
Editor:
ISBN:
File Size: 24,29 MB
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This report summarizes research on the Effects of the Aurora on Radio Wave Propagation. The research included a detailed theoretical study of the generation of synchrotron noise by auroral electrons spiralling in the earth's magnetic field. Experiments were conducted to detect iongyro modulation on radar returns from field aligned irregularities such as those associated with the aurora. A model of auroral radar reflections is discussed which hypothesizes acoustic waves excited by current streams which flow in the ionization enhanced regions at the base of auroral forms. A study was made of the effects on radio wave propagation of high velocity streams of electrons such as those in the solar wind. (Author).