Modeling And Control Of Antennas And Telescopes

Author : Wodek Gawronski
Publisher : Springer Science & Business Media
Page : 235 pages
File Size : 44,5 Mb
Release : 2008-07-11
Category : Technology & Engineering
ISBN : 9780387787930

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Modeling and Control of Antennas and Telescopes by Wodek Gawronski Pdf

Mechanical engineering, and engineering discipline born of the needs of the industrial revolution, is once again asked to do its substantial share in the call for industrial renewal. The general call is urgent as we face profound issues of productivity and competitiveness that require engineering solutions, among others. The Mechanical Engineering Series is a series featuring graduate texts and research monographs intended to address the need for information in contemporary areas of mechanical engineering. The series is conceived as a comprehensive one that covers a broad range of c- centrations important to mechanical engineering graduate education and research. We are fortunate to have a distinguished roster of series editors, each an expert in one of the areas of concentration. The names of the series editors are listed on page vi of this volume. The areas of concentration are applied mechanics, biomechanics, computational mechanics, dynamic systems and control, energetics, mechanics of materials, processing, thermal science, and tribology. Preface This book is based on my experience with the control systems of antennas and radiotelescopes. Overwhelmingly, it is based on experience with the NASA Deep Space Network (DSN) antennas. It includes modeling the antennas, developing control algorithms, eld testing, system identi cation, performance evaluation, and 1 troubleshooting. My previous book emphasized the theoretical aspects of antenna control engineering, while this one describes the application part of the antenna control engineering.

Author : M.A. Shubin
Publisher : Springer
Page : 280 pages
File Size : 47,7 Mb
Release : 1995-12-01
Category : Mathematics
ISBN : 3540570365

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Partial Differential Equations VIII by M.A. Shubin Pdf

This volume of the EMS contains three articles, on linear overdetermined systems of partial differential equations, dissipative Schroedinger operators, and index theorems. Each article presents a comprehensive survey of its subject, discussing fundamental results such as the construction of compatibility operators and complexes for elliptic, parabolic and hyperbolic coercive problems, the method of functional models and the Atiyah-Singer index theorem and its generalisations. Both classical and recent results are explained in detail and illustrated by means of examples.

Author : Albert Greve,Michael Bremer
Publisher : Springer Science & Business Media
Page : 420 pages
File Size : 47,5 Mb
Release : 2010-03-17
Category : Science
ISBN : 9783642038679

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Thermal Design and Thermal Behaviour of Radio Telescopes and their Enclosures by Albert Greve,Michael Bremer Pdf

Radio telescopes as well as communication antennas operate under the influence of gravity, temperature and wind. Among those, temperature influences may degrade the performance of a radio telescope through transient changes of the focus, pointing, path length and sensitivity, often in an unpredictable way. Thermal Design and Thermal Behaviour of Radio Telescopes and their Enclosures reviews the design and construction principles of radio telescopes in view of thermal aspects and heat transfer with the variable thermal environment; it explains supporting thermal model calculations and the application and efficiency of thermal protection and temperature control; it presents many measurements illustrating the thermal behaviour of telescopes in the environment of their observatory sites. The book benefits scientists and radio/communication engineers, telescope designers and construction firms as well as telescope operators, observatory staff, but also the observing astronomer who is directly confronted with the thermal behaviour of a telescope.

Author : Wodek Gawronski
Publisher : Springer
Page : 0 pages
File Size : 47,6 Mb
Release : 2008-11-01
Category : Technology & Engineering
ISBN : 0387570365

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Modeling and Control of Antennas and Telescopes by Wodek Gawronski Pdf

Mechanical engineering, and engineering discipline born of the needs of the industrial revolution, is once again asked to do its substantial share in the call for industrial renewal. The general call is urgent as we face profound issues of productivity and competitiveness that require engineering solutions, among others. The Mechanical Engineering Series is a series featuring graduate texts and research monographs intended to address the need for information in contemporary areas of mechanical engineering. The series is conceived as a comprehensive one that covers a broad range of c- centrations important to mechanical engineering graduate education and research. We are fortunate to have a distinguished roster of series editors, each an expert in one of the areas of concentration. The names of the series editors are listed on page vi of this volume. The areas of concentration are applied mechanics, biomechanics, computational mechanics, dynamic systems and control, energetics, mechanics of materials, processing, thermal science, and tribology. Preface This book is based on my experience with the control systems of antennas and radiotelescopes. Overwhelmingly, it is based on experience with the NASA Deep Space Network (DSN) antennas. It includes modeling the antennas, developing control algorithms, eld testing, system identi cation, performance evaluation, and 1 troubleshooting. My previous book emphasized the theoretical aspects of antenna control engineering, while this one describes the application part of the antenna control engineering.

Author : Torben Andersen,Anita Enmark
Publisher : Springer Science & Business Media
Page : 545 pages
File Size : 49,7 Mb
Release : 2011-06-23
Category : Science
ISBN : 9781461401490

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Integrated Modeling of Telescopes by Torben Andersen,Anita Enmark Pdf

Ground- or space-based telescopes are becoming increasingly more complex and construction budgets are typically in the billion dollar range. Facing costs of this magnitude, availability of engineering tools for prediction of performance and design optimization is imperative. Establishment of simulation models combining different technical disciplines such as Structural Dynamics, Control Engineering, Optics and Thermal Engineering is indispensable. Such models are normally called Integrated Models because they involve many different disciplines. The models will play an increasingly larger role for design of future interdisciplinary optical systems in space or on ground. The book concentrates on integrated modeling of optical and radio telescopes but the techniques presented will be applicable to a large variety of systems. Hence, the book will be of interest to optical and radio telescope designers, designers of spacecrafts that include optical systems, and to designers of various complex defense systems. The book may also find use as a textbook for undergraduate and graduate courses within the field. "Adaptive Optics" is an exciting and relatively new field, originally dedicated to correction for blurring when imaging through the atmosphere. Although this objective is still of high importance, the concept of Adaptive Optics has recently evolved further. Today, the objective is not only to correct for atmospheric turbulence effects but also for a range of static and dynamical telescope aberrations. The notion of adaptive optics has expanded to the field of "Wavefront Control", correcting for a variety of system aberrations. Wavefront control systems maintain form and position of optical elements with high precision under static and dynamical load. In many ways, such systems replace the steel structures of traditional optical systems, thereby providing much lighter systems with a performance not possible before. Integrated Modeling is the foremost tool for studies of Wavefront Control for telescopes and complex optics and is therefore now of high importance. Springer has recently published two books on telescopes, "Reflecting Telescope Optics" by R. Wilson, and "The Design and Construction of Large Optical Telescopes" by P. Bely. Noting that a new (and expensive) generation of Extremely Large Telescopes with apertures in the 30-100 m range is on the way, the present book on integrated modeling is a good match to the existing books and an appropriate specialization and continuation of some subjects dealt with in those books.

Author : Anonim
Publisher : Unknown
Page : 460 pages
File Size : 54,5 Mb
Release : 1982
Category : Large space structures (Astronautics)
ISBN : UOM:39015022344199

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Technology for Large Space Systems by Anonim Pdf

Author : Jacob W.M. Baars,Hans J Kärcher
Publisher : Springer
Page : 282 pages
File Size : 45,7 Mb
Release : 2017-11-18
Category : Science
ISBN : 9783319651484

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Radio Telescope Reflectors by Jacob W.M. Baars,Hans J Kärcher Pdf

This book demonstrates how progress in radio astronomy is intimately linked to the development of reflector antennas of increasing size and precision. The authors describe the design and construction of major radio telescopes as those in Dwingeloo, Jodrell Bank, Parkes, Effelsberg and Green Bank since 1950 up to the present as well as millimeter wavelength telescopes as the 30m MRT of IRAM in Spain, the 50m LMT in Mexico and the ALMA submillimeter instrument. The advances in methods of structural design and coping with environmental influences (wind, temperature, gravity) as well as application of new materials are explained in a non-mathematical, descriptive and graphical way along with the story of the telescopes. Emphasis is placed on the interplay between astronomical and electromagnetic requirements and structural, mechanical and control solutions. A chapter on management aspects of large telescope projects closes the book. The authors address a readership with interest in the progress of engineering solutions applied to the development of radio telescope reflectors and ground station antennas for satellite communication and space research. The book will also be of interest to historians of science and engineering with an inclination to astronomy.

Author : Karl F. Warnick,Rob Maaskant,Marianna V. Ivashina,David B. Davidson,Brian D. Jeffs
Publisher : Cambridge University Press
Page : 471 pages
File Size : 47,9 Mb
Release : 2018-07-26
Category : Mathematics
ISBN : 9781108423922

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Phased Arrays for Radio Astronomy, Remote Sensing, and Satellite Communications by Karl F. Warnick,Rob Maaskant,Marianna V. Ivashina,David B. Davidson,Brian D. Jeffs Pdf

Discover a modern approach to the analysis, modeling and design of high sensitivity phased arrays. Network theory, numerical methods and computational electromagnetic simulation techniques are uniquely combined to enable full system analysis and design optimization. Beamforming and array signal processing theory are integrated into the treatment from the start. Digital signal processing methods such as polyphase filtering and RFI mitigation are described, along with technologies for real-time hardware implementation. Key concepts from interferometric imaging used in radio telescopes are also considered. A basic development of theory and modeling techniques is accompanied by problem sets that guide readers in developing modeling codes that retain the simplicity of the classical array factor method while incorporating mutual coupling effects and interactions between elements. Combining current research trends with pedagogical material suitable for a first-year graduate course, this is an invaluable resource for students, teachers, researchers, and practicing RF/microwave and antenna design engineers.

Author : Juergen Dingel,Wolfram Schulte,Isidro Ramos,Silvia Abrahao,Emilio Insfran
Publisher : Springer
Page : 712 pages
File Size : 47,6 Mb
Release : 2014-09-19
Category : Computers
ISBN : 9783319116532

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Model-Driven Engineering Languages and Systems by Juergen Dingel,Wolfram Schulte,Isidro Ramos,Silvia Abrahao,Emilio Insfran Pdf

This book constitutes the refereed proceedings of the 17th International Conference on Model Driven Engineering Languages and Systems, MODELS 2014, held in Valencia, Spain, in September/October 2014. The 41 full papers presented in this volume were carefully reviewed and selected from a total of 126 submissions. The scope of the conference series is broad, encompassing modeling languages, methods, tools, and applications considered from theoretical and practical angles and in academic and industrial settings. The papers report on the use of modeling in a wide range of cloud, mobile, and web computing, model transformation behavioral modeling, MDE: past, present, future, formal semantics, specification, and verification, models at runtime, feature and variability modeling, composition and adaptation, practices and experience, modeling for analysis, pragmatics, model extraction, manipulation and persistence, querying, and reasoning.

Author : Astronomisches Rechen-InstitutARI
Publisher : Springer Science & Business Media
Page : 1746 pages
File Size : 54,5 Mb
Release : 2013-11-11
Category : Science
ISBN : 9783642517587

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Literature 1997, Part 1 by Astronomisches Rechen-InstitutARI Pdf

Astronomy and Astrophysics Abstracts is devoted to the recording, summarizing and indexing of astronomical publications throughout the world. Two volumes are scheduled to appear per year. Volume 67 records 10,903 papers covering besides the classical fields of astronomy and astrophysics such matters as space flights related to astronomy, lunar and planetary probes and satellites, meteorites and interplanetary matter, X rays and cosmic rays, quasars and pulsars. The abstracts are classified under more than one hundred subject categories thus permitting quick surveying of the bulk of material published on the same topic within six months. For instance, this volume records 119 papers on minor planets, 155 papers on supernovae, and 554 papers on cosmology.

Author : Andrey E. Gorodetskiy,Irina L. Tarasova
Publisher : Springer
Page : 337 pages
File Size : 54,5 Mb
Release : 2018-09-15
Category : Technology & Engineering
ISBN : 9783319997599

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Smart Electromechanical Systems by Andrey E. Gorodetskiy,Irina L. Tarasova Pdf

This book presents the latest achievements in the theory and practice of SEMS Group interaction by scientists from the Russian Academy of Sciences. It also discusses the development of methods for the design and simulation of SEMS Group interaction based on the principles of safety, flexibility and adaptability in behavior and intelligence and parallelism in information processing, computation and control. Recently, the task has been to ensure the functioning of robots within the framework of collective collaboration, so that they function efficiently, reliably and safely in real time. The topics covered include, but are not limited to, the following: - the planning behavior of the SEMS group;- methods and principles of designing of automatic control systems;- mathematical and computer modeling group interaction;- safety, flexibility and adaptability of the SEMS Group;- information-measuring soft- and hardware. This book is intended for students, scientists and engineers specializing in the field of smart electromechanical systems and robotics.

Author : Anonim
Publisher : Unknown
Page : 1572 pages
File Size : 48,8 Mb
Release : 1992
Category : Aeronautics
ISBN : UIUC:30112078757413

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Scientific and Technical Aerospace Reports by Anonim Pdf

Author : James J. Condon,Scott M. Ransom
Publisher : Princeton University Press
Page : 376 pages
File Size : 48,7 Mb
Release : 2016-04-05
Category : Science
ISBN : 9780691137797

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Essential Radio Astronomy by James J. Condon,Scott M. Ransom Pdf

The ideal text for a one-semester course in radio astronomy Essential Radio Astronomy is the only textbook on the subject specifically designed for a one-semester introductory course for advanced undergraduates or graduate students in astronomy and astrophysics. It starts from first principles in order to fill gaps in students' backgrounds, make teaching easier for professors who are not expert radio astronomers, and provide a useful reference to the essential equations used by practitioners. This unique textbook reflects the fact that students of multiwavelength astronomy typically can afford to spend only one semester studying the observational techniques particular to each wavelength band. Essential Radio Astronomy presents only the most crucial concepts—succinctly and accessibly. It covers the general principles behind radio telescopes, receivers, and digital backends without getting bogged down in engineering details. Emphasizing the physical processes in radio sources, the book's approach is shaped by the view that radio astrophysics owes more to thermodynamics than electromagnetism. Proven in the classroom and generously illustrated throughout, Essential Radio Astronomy is an invaluable resource for students and researchers alike. The only textbook specifically designed for a one-semester course in radio astronomy Starts from first principles Makes teaching easier for astronomy professors who are not expert radio astronomers Emphasizes the physical processes in radio sources Covers the principles behind radio telescopes and receivers Provides the essential equations and fundamental constants used by practitioners Supplementary website includes lecture notes, problem sets, exams, and links to interactive demonstrations An online illustration package is available to professors

Author : Marcel De canck
Publisher : Unknown
Page : 210 pages
File Size : 46,8 Mb
Release : 2021-08-30
Category : Electronic
ISBN : 9798466830347

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Practical Antenna Models - by Marcel De canck Pdf

Antenna Modeling Made Easy and Optimized By using variables, equations, and formulas Over the last three decades, computerized antenna modeling has advanced greatly. Modeling, a powerful tool in Amateur Radio, can help you to design antennas and optimize their performances. Today, the EZNEC program is widely used worldwide. A lot was, and still is written about this program in many books, magazines, and on the internet. Example EZNEC models are widely and easily found and available. However, EZNEC lacks one option: optimizing the model. To allow optimizing, you need the use of variables and formulas. This lack is solved by the author of the AutoEZ application, Dan Maguire, AC6LA. Whenever you Google "AutoEZ models" or "Optimizing Antenna models," you will be disappointed about the results. Nearly the only source about optimizing an antenna is found at the website of Dan Maguire and my website on5au.be, and my book publications: "Advanced Antenna Modeling" and "Practical Antenna Models - Volume 1". This new "Practical Antenna Models -Volume 2" handles mainly, for the most part, vertically polarized antennas, such as groundplanes, verticals, 5/8 wavelength multiband, Tower (pylon) models, mutual coupling between antennas, J-pole, matching circuits, etc. Again, EZNEC and AutoEZ models are intensively used, step by step, fully explained, and many AutoEZ tricks revealed.

Author : Yue Wang,Yuyang Liu,Jiaqi Zou,Mengyao Huo
Publisher : Springer Nature
Page : 1257 pages
File Size : 55,6 Mb
Release : 2023-02-23
Category : Technology & Engineering
ISBN : 9789811999680

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Signal and Information Processing, Networking and Computers by Yue Wang,Yuyang Liu,Jiaqi Zou,Mengyao Huo Pdf

This book collects selected papers from the 10th Conference on Signal and Information Processing, Networking and Computers held in Xi’Ning, China held in July, 2022. The book focuses on the current works of information theory, communication system, computer science, aerospace technologies and big data and other related technologies. People from both academia and industry of this field can contribute and find their interests from the book.