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Analysis of Radio-Propagation Environments to Support Standards Development for Rf-Based Electronic Safety Equipment (Classic Reprint) - Softcover
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Excerpt from ysis of Radio-Propagation Environments to Support Standards Development for Rf-Based Electronic Safety Equipment<br/><br/>The National Institute of Standards and Technology (nist) has been involved in a multi-year project to support the development of performance metrics and test methods for radio-frequency (rf)  based electronic safety equipment used by the public safety community. The work reported here focuses on side-by  side measurements of radio-propagation environment characteristics and actual wireless-device performance in representative emergency responder environments. Identifying the radio-channel characteristics that significantly impair wireless-device performance in various environments enables the development of standardized Iaboratory-based test methods that simulate the conditions under which electronic safety equipment will be used in the field. The test methods can then be incorporated into consensus standards for this equipment. The ysis presented here has been funded by the u.s. Department of Homeland Security's Standards Branch. The work reported here has focused on RF based personal alert safety systems (pass), used by firefighters to indicate when a firefighter is motionless or in distress. However, the methodology and ysis presented here could easily be extended to apply to other types of wireless devices that operate in a point  to  point mode. In the propagation-channel studies, nist engineers measured path loss (attenuation) and the level of reflectivity (or multipath, here quantified by the root mean-square delay spread) in large public structures and environments where radio communications could be difficult. These environments include multi-story buildings; buildings with subterranean floors and tunnels; buildings with deep interior spaces; those with few windows; and outdoor urban canyons, consisting of city streets surrounded by tall buildings.
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Paperback. Zustand: New. Print on Demand. Journey into the complexities of radio propagation, a crucial aspect of modern communication and technology, with this comprehensive guide. The author delves into the scientific principles and practical applications of radio signal transmission, propagation, and reception, from historical developments to contemporary advancements. Through in-depth explanations and real-world examples, this book illuminates the intricate relationship between radio signals and their environment, exploring factors like multipath, attenuation, and signal fading. The author also examines the impact of these factors on various wireless communication systems and offers insights into optimizing signal performance. Whether you're an aspiring engineer, a curious technology enthusiast, or anyone seeking a deeper understanding of radio propagation, this book provides a valuable resource to enhance your knowledge and broaden your perspective. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781390377194_0
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