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Author: Takashi Iida
Publisher: IOS Press
ISBN: 9784274903793
Category : Artificial satellites
Languages : en
Pages : 450
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Book Description
Author: Takashi Iida
Publisher: IOS Press
ISBN: 9784274903793
Category : Artificial satellites
Languages : en
Pages : 450
Get Book Here
Book Description
Author: S. Tirró
Publisher: Springer Science & Business Media
ISBN: 1461530067
Category : Technology & Engineering
Languages : en
Pages : 851
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Book Description
Writing a comprehensive book on satellite communications requires the com mand of many technical disciplines and the availability of up-to-date information on international recommendations, system architectures, and equipment stand ards. It is therefore necessary to involve many authors, each possessing a good level of knowledge in a particular discipline. The problem of using a coherent and unambiguous set of definitions and basic terms has been solved by including in the book all the background information needed for understanding satellite communication systems, without any major reference to other textbooks specializing in particular disciplines. The obvious consequence of this approach has been the large size of the book, with the advantages, however, of practically complete independence from other books, more systematic discussion of the subject matter, and better readability. After the required background information, emphasis has been placed on the discussion of techniques and system design criteria rather than on specific equipment implementation or description of particular systems. The book may be divided in five parts as follows: • The first five chapters provide most of the required background information. • Chapter 6 is an introductory outline of satellite communication systems. • Chapters 7 to 13 deal with the various aspects of technical system design. • Chapter 14 discusses system economics. • Chapter 15 provides a brief insight into some foreseeable future develop ments of satellite communications.
Author:
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ISBN:
Category : Large space structures (Astronautics)
Languages : en
Pages : 280
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Book Description
Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 896
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Israel Cohen
Publisher: Springer Science & Business Media
ISBN: 3642111300
Category : Technology & Engineering
Languages : en
Pages : 342
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Book Description
Modern communication devices, such as mobile phones, teleconferencing systems, VoIP, etc., are often used in noisy and reverberant environments. Therefore, signals picked up by the microphones from telecommunication devices contain not only the desired near-end speech signal, but also interferences such as the background noise, far-end echoes produced by the loudspeaker, and reverberations of the desired source. These interferences degrade the fidelity and intelligibility of the near-end speech in human-to-human telecommunications and decrease the performance of human-to-machine interfaces (i.e., automatic speech recognition systems). The proposed book deals with the fundamental challenges of speech processing in modern communication, including speech enhancement, interference suppression, acoustic echo cancellation, relative transfer function identification, source localization, dereverberation, and beamforming in reverberant environments. Enhancement of speech signals is necessary whenever the source signal is corrupted by noise. In highly non-stationary noise environments, noise transients, and interferences may be extremely annoying. Acoustic echo cancellation is used to eliminate the acoustic coupling between the loudspeaker and the microphone of a communication device. Identification of the relative transfer function between sensors in response to a desired speech signal enables to derive a reference noise signal for suppressing directional or coherent noise sources. Source localization, dereverberation, and beamforming in reverberant environments further enable to increase the intelligibility of the near-end speech signal.
Author: Steven J. Isakowitz
Publisher: AIAA
ISBN: 9781563473531
Category : Reference
Languages : en
Pages : 622
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Book Description
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.
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ISBN: 9780871875341
Category : History
Languages : en
Pages : 616
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Book Description
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Category : Mechanics, Applied
Languages : en
Pages : 410
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Category : Music
Languages : en
Pages : 584
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Book Description
Author:
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ISBN:
Category : Power resources
Languages : en
Pages : 1364
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Book Description
