Frequency Standards

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 3527605959
Total Pages : 540 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Frequency Standards by : Fritz Riehle

Download or read book Frequency Standards written by Fritz Riehle and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of all measurement units, frequency is the one that may be determined with the highest degree of accuracy. It equally allows precise measurements of other physical and technical quantities, whenever they can be measured in terms of frequency. This volume covers the central methods and techniques relevant for frequency standards developed in physics, electronics, quantum electronics, and statistics. After a review of the basic principles, the book looks at the realisation of commonly used components. It then continues with the description and characterisation of important frequency standards from atomic clocks, to frequency stabilised lasers. The whole is rounded of with a discussion of topical applications in engineering, telecommunications, and metrology.

Satellite Communications Payload and System

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Publisher : John Wiley & Sons
ISBN 13 : 1118345207
Total Pages : 400 pages
Book Rating : 4.1/5 (183 download)

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Book Synopsis Satellite Communications Payload and System by : Teresa M. Braun

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.

Time and Frequency: Theory and Fundamentals

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Publisher :
ISBN 13 :
Total Pages : 468 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Time and Frequency: Theory and Fundamentals by : Byron Emerson Blair

Download or read book Time and Frequency: Theory and Fundamentals written by Byron Emerson Blair and published by . This book was released on 1974 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: The document is a tutorial Monograph describing various aspects of time and frequency (T/F). Included are chapters relating to elemental concepts of precise time and frequency; basic principles of quartz oscillators and atomic frequency standards; historical review, recent progress, and current status of atomic frequency standards; promising areas for developing future primary frequency standards; relevance of frequency standards to other areas of metrology including a unified standard concept; statistics of T/F data analysis coupled with the theory and construction of the NBS atomic time scale; an overview of T/F dissemination techniques; and the standards of T/F in the USA. The Monograph addresses both the specialist in the field as well as those desiring basic information about time and frequency. The authors trace the development and scope of T/F technology, its improvement over periods of decades, its status today, and its possible use, applications, and development in days to come.

Electromagnetism and Life

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Publisher :
ISBN 13 : 9780981854908
Total Pages : 216 pages
Book Rating : 4.8/5 (549 download)

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Book Synopsis Electromagnetism and Life by : Robert O. Becker

Download or read book Electromagnetism and Life written by Robert O. Becker and published by . This book was released on 2010-04 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The environment is now thoroughly polluted by man-made sources of electromagnetic radiation with frequencies and magnitudes never before present. Man's activities have probably changed the earth's electromagnetic background to a greater degree than they have changed any other natural physical attribute of the earth. The evidence now indicates that the present abnormal electromagnetic environment constitutes a significant health risk. There are also positive aspects of the relationship between electromagnetism and life. Clinical uses of electromagnetic energy are increasing and promise to expand into important areas in the near future. This book synthesizes the various aspects of the role of electricity in biology.

Systems with Small Dissipation

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Publisher : University of Chicago Press
ISBN 13 : 0226070735
Total Pages : 161 pages
Book Rating : 4.2/5 (26 download)

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Book Synopsis Systems with Small Dissipation by : Vladimir Borisovich Braginskiĭ

Download or read book Systems with Small Dissipation written by Vladimir Borisovich Braginskiĭ and published by University of Chicago Press. This book was released on 1985 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Pension Systems in East and Southeast Asia

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Publisher : Asian Development Bank
ISBN 13 : 9290927615
Total Pages : 161 pages
Book Rating : 4.2/5 (99 download)

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Book Synopsis Pension Systems in East and Southeast Asia by : Donghyun Park

Download or read book Pension Systems in East and Southeast Asia written by Donghyun Park and published by Asian Development Bank. This book was released on 2012-08-01 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population aging poses two major challenges for Asian policy makers: (i) sustaining rapid economic growth in the face of less favorable demographic conditions; and (ii) providing affordable, adequate, sustainable old-age income support for a large and growing elderly population. This book explores the second issue by examining the pension systems of eight countries in East and Southeast Asia: the People's Republic of China, Indonesia, the Republic of Korea, Malaysia, the Philippines, Singapore, Thailand, and Viet Nam. It also puts forward both country-specific and region-wide reforms to address two critical areas of pension reform, namely, fairness and sustainability.

Frequency Standards and Clocks

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Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Frequency Standards and Clocks by : Helmut Hellwig

Download or read book Frequency Standards and Clocks written by Helmut Hellwig and published by . This book was released on 1974 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Atomic and Molecular Beams

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Author :
Publisher : Springer Science & Business Media
ISBN 13 : 9783540673781
Total Pages : 1040 pages
Book Rating : 4.6/5 (737 download)

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Book Synopsis Atomic and Molecular Beams by : Roger Campargue

Download or read book Atomic and Molecular Beams written by Roger Campargue and published by Springer Science & Business Media. This book was released on 2001-01-25 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title covers the state of the art in this field both theoretically and experimentally. With contributions from leading researchers including several Nobel laureates, it represents a long-lasting source of reference on all aspects of fundamental research into or using atomic and molecular beams.