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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722048334
Category :
Languages : en
Pages : 42
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Book Description
The Advanced Communications Technology Satellite (ACTS), developed and built by Lockheed Martin Astro space for the NASA Lewis Research Center, was launched in September 1993 on the shuttle STS 51 mission. ACTS is a digital experimental communications test bed that incorporates gigahertz bandwidth transponders operating at Ka band, hopping spot beams, on-board storage and switching, and dynamic rain fade compensation. This paper describes the ACTS enabling technologies, the design of the communications payload, the constraints imposed on the spacecraft bus, and the measurements conducted to verify the performance of the system in orbit. Gargione, F. and Acosta, R. and Coney, T. and Krawczyk, R. Glenn Research Center RTOP 679-40-00...
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722048334
Category :
Languages : en
Pages : 42
Get Book Here
Book Description
The Advanced Communications Technology Satellite (ACTS), developed and built by Lockheed Martin Astro space for the NASA Lewis Research Center, was launched in September 1993 on the shuttle STS 51 mission. ACTS is a digital experimental communications test bed that incorporates gigahertz bandwidth transponders operating at Ka band, hopping spot beams, on-board storage and switching, and dynamic rain fade compensation. This paper describes the ACTS enabling technologies, the design of the communications payload, the constraints imposed on the spacecraft bus, and the measurements conducted to verify the performance of the system in orbit. Gargione, F. and Acosta, R. and Coney, T. and Krawczyk, R. Glenn Research Center RTOP 679-40-00...
Author: United States National Aeronautics and
Publisher: Franklin Classics Trade Press
ISBN: 9780344563126
Category :
Languages : en
Pages : 358
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Book Description
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.
Author: Richard T. Gedney
Publisher: SciTech Publishing
ISBN: 9781891121111
Category : Artificial satellites in telecommunication
Languages : en
Pages : 0
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Book Description
A candid insider's look at the creation of the most advanced digital communications satellite of its time that sparked a revolution in the field of communications and helped spawn Ka Band systems such as Spaceway, Astrolink, Euroskyway, and others. Although created in the early 1980's, the ACTS program correctly forecasted demand for interactive services well ahead of the rise of the Internet and used a market-based approach for defining the needed technology. The book provides a fascinating chronicle of the breakthrough events from the perspectives of the authors, who were intimately involved in every phase of the project, dramatically illustrated with scores of color graphics and photographs highlighting the hardware and the participants. Easy to read but with ample references for further research, it provides a compelling case study of a complex space system development project covering both the technical and managerial aspects. Because this material is not normally released for commercial systems, readers will obtain valuable insights into the world of high-risk technology and the role of government in sponsoring technology development for commercial systems. For communications and aerospace engineers, scientists, and technicians; executives and project managers in high-speed communications, broadcasting, the internet, and aerospace; and venture capitalists.
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723429873
Category :
Languages : en
Pages : 144
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Book Description
Results of research on potential science applications of the NASA Advanced Communications Technology Satellite (ACTS) are presented. Discussed here are: (1) general research on communications related issues; (2) a survey of science-related activities and programs in the local area; (3) interviews of selected scientists and associated telecommunications support personnel whose projects have communications requirements; (4) analysis of linkages between ACTS functionality and science user communications activities and modes of operation; and (5) an analysis of survey results and the projection of conclusions to a national scale. Meyer, Thomas R. Unspecified Center ACTS; RESEARCH; SPACECRAFT COMMUNICATION; EDUCATION; FIBER OPTICS; OPTICAL DISKS; SCIENTISTS; SURVEYS...
Author: Alan W. Hewston
Publisher:
ISBN:
Category : Artificial satellites in telecommunication
Languages : en
Pages : 32
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Book Description
Author: F. Michael Naderi
Publisher:
ISBN:
Category : Artificial satellites in telecommunication
Languages : en
Pages : 40
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 370
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Book Description
Author: Michael M. Mirabito
Publisher: Taylor & Francis
ISBN: 0240805860
Category : Computers
Languages : en
Pages : 345
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Book Description
A complete explanation of today's communication technologies, and their impact!
Author: Joseph H. Yuen
Publisher: Springer Science & Business Media
ISBN: 1475749236
Category : Technology & Engineering
Languages : en
Pages : 615
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Book Description
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.
Author: United States. President
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 602
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Book Description
