Download or read book Revolution in the U S Information Infrastructure written by National Academy of Engineering and published by National Academies Press. This book was released on 1995-06-09 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: While societies have always had information infrastructures, the power and reach of today's information technologies offer opportunities to transform work and family lives in an unprecedented fashion. This volume, a collection of six papers presented at the 1994 National Academy of Engineering Meeting Technical Session, presents a range of views on the subject of the revolution in the U.S. information infrastructure. The papers cover a variety of current issues including an overview of the technological developments driving the evolution of information infrastructures and where they will lead; the development of the Internet, particularly the government's role in its evolution; the impact of regulatory reform and antitrust enforcement on the telecommunications revolution; and perspectives from the computer, wireless, and satellite communications industries.
Download or read book Navy s Needs in Space for Providing Future Capabilities written by National Research Council and published by National Academies Press. This book was released on 2005-07-18 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States must operate successfully in space to help assure its security and economic well being. The Department of the Navy is a major user of space capabilities, although those capabilities are now primarily provided by DOD, the Air Force, and NOAA. Following a DOD assessment of national space security management in 2001, the Navy commissioned a Panel to Review Space to assess Navy space policy and strategy. As an extension of that review, the NRC was requested by the Navy to examine its needs in space for providing future operational and technical capabilities. This report presents a discussion of the strategic framework of future space needs, the roles and responsibilities for meeting those needs, an assessment of Navy support to space mission areas, and a proposed vision for fulfilling Naval forces space needs.
Download or read book Beyond the Ionosphere written by United States National Aeronautics and and published by Franklin Classics Trade Press. This book was released on 2018-10-31 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book National Communications Satellite Programs written by United States. Congress. Senate. Committee on Aeronautical and Space Sciences and published by . This book was released on 1966 with total page 1434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deep Space Telecommunications Systems Engineering written by Joseph H. Yuen and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: The challenge of communication in planetary exploration has been unusual. The guidance and control of spacecraft depend on reliable communication. Scientific data returned to earth are irreplaceable, or replaceable only at the cost of another mission. In deep space, communications propagation is good, relative to terrestrial communications, and there is an opportunity to press toward the mathematical limit of microwave communication. Yet the limits must be approached warily, with reliability as well as channel capacity in mind. Further, the effects of small changes in the earth's atmosphere and the interplanetary plasma have small but important effects on propagation time and hence on the measurement of distance. Advances are almost incredible. Communication capability measured in 18 bits per second at a given range rose by a factor of 10 in the 19 years from Explorer I of 1958 to Voyager of 1977. This improvement was attained through ingenious design based on the sort of penetrating analysis set forth in this book by engineers who took part in a highly detailed and amazingly successful pro gram. Careful observation and analysis have told us much about limitations on the accurate measurement of distance. It is not easy to get busy people to tell others clearly and in detail how they have solved important problems. Joseph H. Yuen and the other contribu tors to this book are to be commended for the time and care they have devoted to explicating one vital aspect of a great adventure of mankind.
Download or read book Handbook of Satellite Applications written by Joseph N. Pelton and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Introduction to Satellite Communications written by Don I. Dalgleish and published by IET. This book was released on 1989 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book National Communications Satellite Programs written by United States. Congress. Senate. Aeronautical and Space Sciences and published by . This book was released on 1966 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Communications Satellite System written by National Communications Satellite System Task Force (Australia) and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 The Evolution of Untethered Communications written by National Research Council and published by National Academies Press. This book was released on 1998-01-01 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to a request from the Defense Advanced Research Projects Agency, the committee studied a range of issues to help identify what strategies the Department of Defense might follow to meet its need for flexible, rapidly deployable communications systems. Taking into account the military's particular requirements for security, interoperability, and other capabilities as well as the extent to which commercial technology development can be expected to support these and related needs, the book recommends systems and component research as well as organizational changes to help the DOD field state-of-the-art, cost-effective untethered communications systems. In addition to advising DARPA on where its investment in information technology for mobile wireless communications systems can have the greatest impact, the book explores the evolution of wireless technology, the often fruitful synergy between commercial and military research and development efforts, and the technical challenges still to be overcome in making the dream of "anytime, anywhere" communications a reality.
Download or read book Global Navigation Satellite Systems written by National Academy of Engineering and published by National Academies Press. This book was released on 2012-04-27 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Positioning System (GPS) has revolutionized the measurement of position, velocity, and time. It has rapidly evolved into a worldwide utility with more than a billion receiver sets currently in use that provide enormous benefits to humanity: improved safety of life, increased productivity, and wide-spread convenience. Global Navigation Satellite Systems summarizes the joint workshop on Global Navigation Satellite Systems held jointly by the U.S. National Academy of Engineering and the Chinese Academy of Engineering on May 24-25, 2011 at Hongqiao Guest Hotel in Shanghai, China. "We have one world, and only one set of global resources. It is important to work together on satellite navigation. Competing and cooperation is like Yin and Yang. They need to be balanced," stated Dr. Charles M. Vest, President of the National Academy of Engineering, in the workshop's opening remarks. Global Navigation Satellite Systems covers the objectives of the workshop, which explore issues of enhanced interoperability and interchangeability for all civil users aimed to consider collaborative efforts for countering the global threat of inadvertent or illegal interference to GNSS signals, promotes new applications for GNSS, emphasizing productivity, safety, and environmental protection. The workshop featured presentations chosen based on the following criteria: they must have relevant engineering/technical content or usefulness; be of mutual interest; offer the opportunity for enhancing GNSS availability, accuracy, integrity, and/or continuity; and offer the possibility of recommendations for further actions and discussions. Global Navigation Satellite Systems is an essential report for engineers, workshop attendees, policy makers, educators, and relevant government agencies.
Download or read book International Reference Guide to Space Launch Systems written by Steven J. Isakowitz and published by AIAA. This book was released on 1999 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: This best-selling reference guide contains the most reliable and up-to-date material on launch programs in Brazil, China, Europe, India, Israel, Japan, Russia, Ukraine, and the United States. Packed with illustrations and figures, the third edition has been extensively updated and expanded, and offers a quick and easy data retrieval source for policymakers, planners, engineers, launch buyers, and students.
Download or read book Communication Satellite Systems Technology written by Richard B. Marsten and published by Academic Press. This book was released on 2014-12-03 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: Communication Satellite Systems Technology reviews the state of the art in communication satellite systems technology. Topics covered range from commercial point-to-point systems and military satellite communication systems to satellite support subsystems and components, along with high-power systems. Communication satellites are also discussed from a sociological perspective. Comprised of 50 chapters, this book begins with a 1945 article by Arthur C. Clarke in which he proposed the construction of rocket space stations in orbit that would provide complete radio coverage of the globe as well as extraterrestrial relay services. The reader is then introduced to the Early Bird satellite and its hydrogen peroxide orbit control and orientation system. Details of the sequence of maneuvers required after transfer ellipse injection until final placement in a stationary orbit are given. The methods of calculation of maneuver parameters, as well as numerical examples of certain Early Bird orbit changes and maneuver parameters, are described. The effects of the principal long-term disturbing forces on the satellite are also considered. Subsequent chapters focus on military satellite communication systems; satellite support subsystems and components; high-power systems; and systems concepts. The organization and program of Intelsat are also evaluated. This monograph will be of value to practitioners in the fields of aeronautics, astronautics, and satellite communications.
Download or read book Communication Satellites written by United States. Congress. Senate. Committee on Aeronautical and Space Sciences and published by . This book was released on 1962 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Satellite Communications 1964 written by United States. Congress. House Government Operations and published by . This book was released on 1964 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Satellite Communications 1964 written by United States. Congress. House. Committee on Government Operations and published by . This book was released on 1964 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pt. 1 discusses feasibility of joint military-civilian use of COMSAT global satellite system.
