Principles of Communications Satellites


Book Description

Explains the reasons, limitations and trade-offs inherent tocommunications satellites. The first half deals with link powerbudgets as well as communications hardware and examples of completelink budgets. Spacecraft technology and a description of theobjectives and basic operating methods of each of the majorsupporting subsystems are covered in the last half. Containsend-of-chapter exercises and solutions. An Instructor's Manual presenting detailed solutions to all theproblems in the book is available from the Wiley editorialdepartment.




Satellite Communications Systems


Book Description

Revisions to 5th Edition by: Zhili Sun, University of Surrey, UK New and updated edition of this authoritative and comprehensive reference to the field of satellite communications engineering Building on the success of previous editions, Satellite Communications Systems, Fifth Edition covers the entire field of satellite communications engineering from orbital mechanics to satellite design and launch, configuration and installation of earth stations, including the implementation of communications links and the set-up of the satellite network. This book provides a comprehensive treatment of satellite communications systems engineering and discusses the technological applications. It demonstrates how system components interact and details the relationship between the system and its environment. The authors discuss the systems aspects such as techniques enabling equipment and system dimensioning and state of the art technology for satellite platforms, payloads and earth stations. New features and updates for the fifth edition include: More information on techniques allowing service provision of multimedia content Extra material on techniques for broadcasting, including recent standards DVB-RCS and DVB-S2 (Digital Video Broadcasting -Return Channel Satellite and -Satellite Version 2) Updates on onboard processing By offering a detailed and practical overview, Satellite Communications Systems continues to be an authoritative text for advanced students, engineers and designers throughout the field of satellite communications and engineering.




Satellite Communications Systems


Book Description

The updated 6th edition of the authoritative and comprehensive textbook to the field of satellite communications engineering The revised and updated sixth edition of Satellite Communications Systems contains information on the most recent advances related to satellite communications systems, technologies, network architectures and new requirements of services and applications. The authors – noted experts on the topic – cover the state-of-the-art satellite communication systems and technologies and examine the relevant topics concerning communication and network technologies, concepts, techniques and algorithms. New to this edition is information on internetworking with the broadband satellite systems, more intensive coverage of Ka band technologies, GEO high throughput satellite (HTS), LEO constellations and the potential to support the current new broadband Internet services as well as future developments for global information infrastructure. The authors offer details on digital communication systems and broadband networks in order to provide high-level researchers and professional engineers an authoritative reference. In addition, the book is designed in a user-friendly format. This important text: Puts the focus on satellite communications and networks as well as the related applications and services Provides an essential, comprehensive and authoritative updated guide to the topic Contains new topics including the space segment, ground, ground satellite control and network management, relevant terrestrial networks and more Includes helpful illustrations, tables and problems to enhance learning Offers a summary at the beginning of each chapter to help understand the concepts and principles discussed Written for research students studying or researching in the areas related to satellite communications systems and networks, the updated sixth edition of Satellite Communications Systems offers an essential guide to the most recent developments in the field of satellite communications engineering and references to international standards.




Mobile Satellite Communication Networks


Book Description

Mobile satellite services are set to change with the imminent launch of satellite personal communication services (S-PCS), through the use of non-geostationary satellites. This new generation of satellites will be placed in low earth orbit or medium earth orbit, hence, introducing new satellite design concepts. One of the first texts to cover this rapidly evolving field, this text provides the reader with an overview of mobile satellite systems, from their initial introduction (Inmarsat), current satellite-PCS (referring to such systems as Globalstar), through to Satellite-UMTS and an understanding of the following: * The design concepts associated with non-geostationary satellite systems (constellation, link budgets, Doppler) * The concepts of UMTS (network architecture, aims, in the context of IMT-2000) and the role foreseen for the satellite component (complementary to terrestrial network, network extension, global availability) * Inter-working between satellite and terrestrial networks (network architecture, ATM Adaptation Layer) * Radio interface technologies (WB-CDMA, TDMA, transmission environment) * Regulatory issues * Future services and applications * Potential satellite markets (prediction techniques, effect of tariffing policies on potential market) With leading edge information, this valuable resource will be indispensable to researchers, engineers, operators and market evaluators in satellite service industries and research institutions, as well as postgraduates and research students in the field.




Satellite Communications Payload and System


Book Description

This is the first book primarily about the satellite payload of satellite communications systems. It represents a unique combination of practical systems engineering and communications theory. It tells about the satellites in geostationary and low-earth orbits today, both the so-called bent-pipe payloads and the processing payloads. The on-orbit environment, mitigated by the spacecraft bus, is described. The payload units (e.g. antennas and amplifiers), as well as payload-integration elements (e.g. waveguide and switches) are discussed in regard to how they work, what they do to the signal, their technology, environment sensitivity, and specifications. At a higher level are discussions on the payload as an entity: architecture including redundancy; specifications--what they mean, how they relate to unit specifications, and how to verify; and specification-compliance analysis (“budgets”) with uncertainty. Aspects of probability theory handy for calculating and using uncertainty and variation are presented. The highest-level discussions, on the end-to-end communications system, start with a practical introduction to physical-layer communications theory. Atmospheric effects and interference on the communications link are described. A chapter gives an example of optimizing a multibeam payload via probabilistic analysis. Finally, practical tips on system simulation and emulation are provided. The carrier frequencies treated are 1 GHz and above. Familiarity with Fourier analysis will enhance understanding of some topics. References are provided throughout the book for readers who want to dig deeper. Payload systems engineers, payload proposal writers, satellite-communications systems designers and analysts, and satellite customers will find that the book cuts their learning time. Spacecraft-bus systems engineers, payload unit engineers, and spacecraft operators will gain insight into the overall system. Students in systems engineering, microwave engineering, communications theory, probability theory, and communications simulation and modelling will find examples to supplement theoretical texts.







Communications Satellite Handbook


Book Description

Business Earth Stations for Telecommunications Walter L. Morgan and Denis Rouffet This practical guide provides telecommunications managers with the basic information and procedures needed to configure a telecommunications network to meet the communications needs of their organization. It offers invaluable insights into the planning needs of managers, manufacturers, sellers, and installers of microterminals. The authors give you a complete overview of microterminal technology for the next decade, including: their history and nature, why they are used, who uses them and how service is provided, potential applications, an overview of the U.S. microterminal market, a look at network operators, and the economics of microterminal versus terrestrial services. 1988 (0 471-63556-1) 234 pp. A Basic Atlas of Radio-Wave Propagation Shigekazu Shibuya Now, in one source, planners and designers of telecommunications operating organizations can get direct guidelines for radio system planning and design. Carefully organized to present basic concepts of radio-wave propagation and system design, this indispensable work fully details even the most difficult mathematical theories and equations with graphic presentations that beginners and non-specialists will find particularly helpful. It presents all of the essential design elements required for VHF, UHF, and SHF radio in easy-to-follow chart form. In addition, every problem in this book can be explored using a computer. 1987 (0 471-88183-X) 778 pp. Radio System Design for Telecommunications (1-100 GHz) Roger L. Freeman Here’s how to plan, engineer, and design analog and digital radiolinks in the point-to-point telecommunications service. Telecommunications expert Roger Freeman covers every aspect of radio system design used in telecommunications, including siting criteria, hardware layout, performance predictions, links and system analysis, facility planning, and frequency assignment information. The book also describes how radiolinks operate and how to select the necessary performance parameters and equipment specifications to meet the needs of various customers. 1987 (0 471-81236-6) 560 pp.




Communication Satellites


Book Description




Satellite Communications


Book Description

The only work to present a unified treatment of all the basic aspects of satellite communications and to give practical examples from real systems. Whereas most texts in the field concentrate on a mathematical description of the communications link, Satellite Communications gives the reader a thorough knowledge of the subject by going on to cover orbits, propagation, and the equipment that comprises a working system. Pratt and Bostian go beyond the standard treatment of ideal channels (which ignores some very real practical limitations) to deal with the problems associated with transmitting digitally modulated signals through real satellites and earth stations. Included are chapters on orbital mechanics, spacecraft construction, satellite-path radio wave propagation, modulation techniques, multiple access, and a detailed analysis of the communications link. Contains worked examples and homework problems based on current industrial practice.




Low Earth Orbital Satellites for Personal Communication Networks


Book Description

Although low earth orbital (LEO) satellites are the most promising candidates for establishing personal communication networks (PCNs) on a global basis, their usage is also problematic. This new book provides the first comprehensive analysis of one of the hottest topics in communication systems today -- the application of LEO satellites in PCNs.