Download or read book Commercial Satellite Communication written by Stephan C. Pascall and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Employing Commercial Satellite Communications written by Tim Bonds and published by RAND Corporation. This book was released on 2000 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report assesses military use of commercial wideband satellites by evaluating their effectiveness across several characteristics defined by the United States Space Command. The cost of buying or leasing commercial systems is then found and compared with the cost of buying military systems with commercial characteristics.
Download or read book Origins of Satellite Communications 1945 1965 written by David J. Whalen and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Satellite Communication written by Bruce R. Elbert and published by Artech House. This book was released on 2008 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whether you are a technical or management professional, you can turn to this highly understandable and comprehensive overview of satellite technology, applications, and management. Thoroughly updated and expanded, this third edition boasts a wealth of new material, including added coverage of systems engineering as applied to satellite communications, clear explanations of all aspects of building and using a satellite systems, and discussions on digital communications and processing in modern satellite networks. The new edition also examines critical success factors and how to avoid the pitfalls in selecting satellite and ground resources. The book covers all the fundamentals of satellites, ground control systems, and earth stations, considering the design and operation of each major segment. You gain a practical understanding of the basic construction and usage of commercial satellite networks-how parts of a satellite system function, how various components interact, which role each component plays, and which factors are the most critical to success. Moreover, the book explores the economic, legal, and management issues involved in running the business of satellite communications.
Download or read book ORIGINS SATELLITE COMM written by WHALEN DAVID J and published by Smithsonian Institution Scholarly Press. This book was released on 2002-08-17 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional assumptions hold that U.S. government research and development efforts produced the satellite communications industry. David J. Whalen has looked deeply into the history of the industry and presents remarkable new information to tell a much different story. He finds that most of the satellite technology was privately developed by AT&T and Hughes Aircraft Company, and that the market for satellite communications existed before the government stepped in. In this detailed history of satellite communication's earliest years, Whalen explains that NASA, the White House, and Congress intervened in satellite communications development to show the world that the U.S. was in the space race and that the billions of dollars the U.S. government planned to spend would result in practical applications. He traces many different outcomes of government intervention, such as the marginalization of AT&T, who designed and paid for the first real communication satellite, Telstar 1; the positioning of Hughes as the dominant commercial satellite manufacturer; and the establishment of geosynchronous Earth orbit as the preferred orbit. Had the market been allowed to operate freely, AT&T would have launched their commercial low-earth-orbit telephone satellite in the 1960s. Many previous histories of satellite communications have emphasized government contributions; this version is the first to focus on the industry's contributions.
Download or read book Satellite communications strategic approach needed for DOD s procurement of commercial satellite bandwidth written by and published by DIANE Publishing. This book was released on with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Satellite Communications written by Timothy Pratt and published by John Wiley & Sons. This book was released on 2019-10-08 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive revision of the best-selling text on satellite communications — includes new chapters on cubesats, NGSO satellite systems, and Internet access by satellite There have been many changes in the thirty three years since the first edition of Satellite Communications was published. There has been a complete transition from analog to digital communication systems, withanalog techniques replaced by digital modulation and digital signal processing. While distribution of television programming remains the largest sector of commercial satellite communications, low earth orbit constellations of satellites for Internet access are set to challenge that dominance. In the third edition, chapters one through three cover topics that are specific to satellites, including orbits, launchers, and spacecraft. Chapters four through seven cover the principles of digital communication systems, radio frequency communications, digital modulation and multiple access techniques, and propagation in the earth’s atmosphere, topics that are common to all radio communication systems. Chapters eight through twelve cover applications that include non-geostationary satellite systems, low throughput systems, direct broadcast satellite television, Internet access by satellite, and global navigation satellite systems. The chapter on Internet access by satellite is new to the third edition, and each of the chapters has been extensively revised to include the many changes in the field since the publication of the second edition in 2003. Two appendices have been added that cover digital transmission of analog signals, and antennas. An invaluable resource for students and professionals alike, this book: Focuses on the fundamental theory of satellite communications Explains the underlying principles and essential mathematics required to understand the physics and engineering of satellite communications Discusses the expansion of satellite communication systems in areas such as direct-broadcast satellite TV, GPS, and internet access Introduces the rapidly advancing field of small satellites, referred to as SmallSats or CubeSats Provides relevant practice problems based on real-world satellite systems Satellite Communications is required reading for undergraduate and postgraduate students in satellite communications courses and an authoritative reference for engineers working in communications, systems and networks, and satellite operations and management.
Download or read book Satellite Communications Payload and System written by Teresa M. Braun and published by John Wiley & Sons. This book was released on 2012-08-06 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book What Will Commercial Satellite Communications Do for the Military After Next written by Gregg E. Petersen and published by . This book was released on 1998 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the eight years from 1995 to 2003, over 890 commercial communications satellites comprising 34 new system constellations will be placed into service orbiting our planet. Many recent studies of the future United States military have identified satellite communications as key to the of the future force. The military's requirement for command and control on the move (C2OTM) and its penchant for often deploying to areas where little or no infrastructure exists further validate this satellite communication requirement. Although the military has its own satellite communications systems in use now and planned for the future, those systems have relatively low throughput and therefore do not satisfy the gross future requirements. As military budgets shrink and military constellations wear out without our ability to replace but a very few justified hardened systems, DoD must acquire the best possible mix of satellite communications support for the warfighter via commercial means. The three keys to military success for the force after next in this dual use area of technology will be: (1) knowledge of our own requirements, (2) knowledge of the technology's limitations, and (3) close cooperation with industry to insure our service specific requirements are met.
Download or read book Military Satellite Communications written by United States. General Accounting Office and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Global Mobile Satellite Communications written by Stojce Dimov Ilcev and published by Springer Science & Business Media. This book was released on 2005-12-05 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 satellite constellations in non-geostationary orbits such as Little and Big LEO configurations and hybrid satellite constellations as Ellipso Borealis and Concordia system. This book is important for modern shipping, truck, train and aeronautical societies because GMSC in the present millennium provides more effective business and trade, with emphasis on safety and commercial communications. Global Mobile Satellite Communications is written to make bridges between potential readers and current GMSC trends, mobile system concepts and network architecture using a simple mode of style with understandable technical information, characteristics, graphicons, illustrations and mathematics equations. Global Mobile Satellite Communications represents telecommunications technique and technology, which can be useful for all technical staff on vessels at sea and rivers, on all types of land vehicles, on planes, on off shore constructions and for everyone possessing satellite communications handset phones.
Download or read book Critical Infrastructure Protection written by Robert F. Dacey and published by DIANE Publishing. This book was released on 2002-02 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because the Fed. gov't. relies on commercial satellites (CS), security threats leading to their disruption or loss would put gov't. functions (incl. communications and info. transmission) at significant risk. The GAO was asked to review, among other things, the techniques used by Fed. agencies to reduce the risk assoc. with using CS, as well as efforts to improve satellite system security undertaken as part of Fed. efforts in critical infrastructure protection. GAO recommends that steps be taken to promote the appropriate development and implementation of policy regarding the security of CS systems. Recommends that CS be identified as a critical infrastructure in the national critical infrastructure protection strategy. Charts and tables.
Download or read book The Basics of Satellite Communications written by Joseph N. Pelton and published by Intl. Engineering Consortiu. This book was released on 2006 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the proliferation of new communications technologies, the decades-old satellite industry is shifting with the times. Now in its second edition, this guide addresses the myriad aspects of the technology in its current form and explores the paths it is expected to take in the future.
Download or read book What Will Commercial Satellite Communications Do for the Military After Next written by Gregg E. Petersen and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the eight years from 1995 to 2003, over 890 commercial communications satellites comprising 34 new system constellations will be placed into service orbiting our planet. Many recent studies of the future United States military have identified satellite communications as key to the of the future force. The military's requirement for command and control on the move (C2OTM) and its penchant for often deploying to areas where little or no infrastructure exists further validate this satellite communication requirement. Although the military has its own satellite communications systems in use now and planned for the future, those systems have relatively low throughput and therefore do not satisfy the gross future requirements. As military budgets shrink and military constellations wear out without our ability to replace but a very few justified hardened systems, DoD must acquire the best possible mix of satellite communications support for the warfighter via commercial means. The three keys to military success for the force after next in this dual use area of technology will be: (1) knowledge of our own requirements, (2) knowledge of the technology's limitations, and (3) close cooperation with industry to insure our service specific requirements are met.
Download or read book Laser Satellite Communication written by William H. Mott IV and published by Bloomsbury Publishing USA. This book was released on 2000-01-30 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This introduction to the next generation of human telecommunications enterprise examines the development of laser satellite communications and describes its advantages over previous technologies. It looks at the development of the technology and the industry through wired and wireless media and presents the vision, promise, and challenges of free-space lasers. The book balances its focused consideration of the telecommunications industry and markets with practical thoughts on creating a business involved in the introduction of commercial laser satellite communications systems. Scholars, investors, venture capitalists, policy makers, and corporate leaders will find this to be a comprehensive and eye-opening bridge between the existing telecommunications industry and the opportunities of the next generation. The opening chapters introduce the concepts of Migration, Specialization, and Interconnectivity as solutions inherent in third generation laser-satellite communications. The high capacity of the optical spectrum invites migration of applications beyond the narrow RF spectra to the high frequencies of free-space laser beams. Migration stimulates specialization of voice and duplex at the lower, optimal RF spectra. The third generation—laser-wired space—focuses around global satellite interconnectivity between fiber optics and RF. The final chapters introduce a model business concept to pioneer the third generation. Several approaches to capitalization, organization, technology development, and business strategies provide an exciting stimulus for pragmatic approaches to commercial concepts.
Download or read book Mobile Satellite Communications Handbook written by Roger Cochetti and published by John Wiley & Sons. This book was released on 2014-09-25 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a Preface by noted satellite scientist Dr. Ahmad Ghais, the Second Edition reflects the expanded user base for this technology by updating information on historic, current, and planned commercial and military satellite systems and by expanding sections that explain the technology for non-technical professionals. The book begins with an introduction to satellite communications and goes on to provide an overview of the technologies involved in mobile satellite communications, providing basic introductions to RF Issues, power Issues, link issues and system issues. It describes early commercial mobile satellite communications systems, such as Marisat and Marecs and their military counterparts. The book then discusses the full range of Inmarsat and other current and planned geostationary, low earth orbiting and hybrid mobile satellite systems from over a dozen countries and companies. It is an essential guide for anyone seeking a comprehensive understanding of this industry and military tool. • Revised edition will serve both technical and non-technical professionals who rely every day on mobile satellite communications • Describes and explains historic, current, and planned civil, commercial, and military mobile satellite communication systems. • First Edition charts and tables updated and expanded with current material for today’s mobile satellite technology
Download or read book Employing Commercial Satellite Communications Wideband Investment Options for the Department of Defense written by and published by . This book was released on 2000 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Department of Defense (DoD) is considering major investments in systems that exploit information to support warfighting, and communications between users around the globe will be key to transmitting and using this information. In the near term, there are not enough military systems to satisfy projected communications demand and commercial systems will have to be used. In the future, budgetary pressures will make it difficult for the services to satisfy the projected communications demand with dedicated military assets. This report seeks to answer several questions: 1) How much of the projected demand can be met with programmed and planned military assets?; 2) Can commercial technologies, systems, or services meet the remaining needs? How do commercial communication assets compare with military assets in their ability to meet criteria important to DoD? What steps might be taken to mitigate shortfalls?; 3) What is the expected cost of providing the projected communications demand?; and, 4) What investment strategies should DoD employ to minimize the expected cost? The many categories of military communications include everything from battlefield communications between mobile users to communications between fixed sites in rear areas. Some of these communications must be survivable in a nuclear war, and others need high levels of protection from detection, interception, or jamming. Some require verv high data rates, whereas others need only low data rates. Some communications can be by wire or fiber optic cable, whereas others must use wireless means. We have examined a specific category of communications-high bandwidth, minimally protected satellite communications. This category of military demand represents roughly half of the projected military satellite capacity needs. To the extent that use of commercial systems can satisfy this need, military systems can be used for more specialized communications needing a greater level of control over their operation.
