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This book focuses on earth station design and components--one of the more neglected aspects of satellite communications. Topics include the growth of satellite communication and its history, synchronous satellite systems, signal processing, basic earth system stations, satellite communications for telephony, mobile satellite communications, satellite business systems, satellite television and remote sensing. The book also discusses satellite versus optical fibre, as well as the future of satellite systems. It should be considered a "must have" by all companies, engineers, and libraries requiring a source book for satellite communication possibilities and link designs.
This book focuses on earth station design and components--one of the more neglected aspects of satellite communications. Topics include the growth of satellite communication and its history, synchronous satellite systems, signal processing, basic earth system stations, satellite communications for telephony, mobile satellite communications, satellite business systems, satellite television and remote sensing. The book also discusses satellite versus optical fibre, as well as the future of satellite systems. It should be considered a "must have" by all companies, engineers, and libraries requiring a source book for satellite communication possibilities and link designs.
Since the publication of the best-selling first edition of The Satellite Communication Applications Handbook, the satellite communications industry has experienced explosive growth. Satellite radio, direct-to-home satellite television, satellite telephones, and satellite guidance for automobiles are now common and popular consumer products. Similarly, business, government, and defense organizations now rely on satellite communications for day-to-day operations. This second edition covers all the latest advances in satellite technology and applications including direct-to-home broadcasting, digital audio and video, and VSAT networks. Engineers get the latest technical insights into operations, architectures, and systems components.
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.
Communications Satellites: The Technology of Space Communications focuses on the technologies and approaches employed in communications satellites. The book first tackles geosynchronous orbit, low orbit to geosynchronous altitude, disturbances in orbit, and turning a crate into a satellite. Topics include thermal and electrical power, station-keeping, and 'pointing'. The publication then ponders on on-board communications equipment, logarithms and decibels, and radio frequencies and wavelengths and their allocations. Discussions focus on fixed, broadcast, and mobile services, complete satellite, transponders, and antennas. The manuscript examines earth stations, traffic capacity and quality, selecting a satellite, and economic system optimization. Compression and modulation techniques, echo and delay, encryption, space loss, estimation of traffic capacity and quality, and up-link transmission are discussed. The text then elaborates on the economics of satellite communications and operational systems. The publication is valuable reference for readers interested in the technologies and approaches involved in communications satellites.
Global mobile satellite communications (GMSC) are specific satellite communication systems for maritime, land and aeronautical applications. It enables connections between moving objects such as ships, vehicles and aircrafts, and telecommunications subscribers through the medium of communications satellites, ground earth stations, PTT or other landline telecommunications providers. Mobile satellite communications and technology have been in use for over two decades. Its initial application is aimed at the maritime market for commercial and distress applications. In recent years, new developments and initiatives have resulted in land and aeronautical applications and the introduction of new s...
Satellites are increasingly used for global communications, as well as for radio and television transmissions. With the growth of mobile communications, and of digital technology, the use of satellite systems is set to expand substantially and already all students of electronics or communications engineering must study the subject.This book steers a middle path between offering a basic understanding of the process of communication by satellite and the methodology used; and the extensive mathematical analysis normally adopted in similar texts. It presents the basic concepts, using as much mathematical content as is necessary to make the process understandable. The principles introduced are backed up by examples of actual applications showing how professional systems engineers have achieved the required system performance capabilities. The practical systems chosen are representative of modern day applications and comprise an international communications system, an international maritime system and a regional system.
Deals with the physics and geometry of the geostationary orbit, and the construction and operation of satellites and launch vehicles. Gives a thorough analysis of essential factors governing the quality of speech, data, and television signals received via satellite. Particular attention is paid to the use of satellites for maritime, aeronautical and land-mobile communications and VSATs (very-small aperture terminals). Annotation copyrighted by Book News, Inc., Portland, OR