Electronically Scanned Arrays Esas And K Space Gain Formulation

Author : Roger A. Dana
Publisher : Unknown
Page : 128 pages
File Size : 45,9 Mb
Release : 2019
Category : TECHNOLOGY & ENGINEERING
ISBN : 3030046796

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Electronically Scanned Arrays (ESAs) and K-space Gain Formulation by Roger A. Dana Pdf

This book fills in details that are often left out of modern books on the theory of antennas. The starting point is a discussion of some general principles that apply to all electronic systems and to antennas in particular. Just as time domain functions can be expanded in terms of sine waves using Fourier transforms, spatial domain functions can be expanded in terms of plane waves also using Fourier transforms, and K-space gain is the spatial Fourier transform of the aperture weighting function. Other topics discussed include the Discrete Fourier Transform (DFT) formulation of antenna gain and what is missing in this formulation, the effect of sky temperature on the often specified G/T ratio of antennas, sidelobe control using conventional and novel techniques, and ESA digital beamforming versus adaptive processing to limit interference. Presents content the author derived when first asked to evaluate the performance of an electronically scanned array under design with manufacturing imperfections and design limitations; Enables readers to understand the firm theoretical foundation of antenna gain even when they must start from well-known formulations rather than first principles; Explains in a straightforward manner the relationship between antenna gain and aperture area; Discusses the relationship between sidelobe control algorithms and aperture shape, how to take advantage of it, and what the penalties are; Shows the equivalence of Minimum-Variance, Distortionless Response (MVDR) and Space-Time Adaptive Processing (STAP) and how these algorithms can be used with ESA subarrays to mitigate interference.

Author : Roger A. Dana
Publisher : Springer
Page : 113 pages
File Size : 47,5 Mb
Release : 2019-02-14
Category : Technology & Engineering
ISBN : 9783030046781

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Electronically Scanned Arrays (ESAs) and K-Space Gain Formulation by Roger A. Dana Pdf

This book fills in details that are often left out of modern books on the theory of antennas. The starting point is a discussion of some general principles that apply to all electronic systems and to antennas in particular. Just as time domain functions can be expanded in terms of sine waves using Fourier transforms, spatial domain functions can be expanded in terms of plane waves also using Fourier transforms, and K-space gain is the spatial Fourier transform of the aperture weighting function. Other topics discussed include the Discrete Fourier Transform (DFT) formulation of antenna gain and what is missing in this formulation, the effect of sky temperature on the often specified G/T ratio of antennas, sidelobe control using conventional and novel techniques, and ESA digital beamforming versus adaptive processing to limit interference. Presents content the author derived when first asked to evaluate the performance of an electronically scanned array under design with manufacturing imperfections and design limitations; Enables readers to understand the firm theoretical foundation of antenna gain even when they must start from well-known formulations rather than first principles; Explains in a straightforward manner the relationship between antenna gain and aperture area; Discusses the relationship between sidelobe control algorithms and aperture shape, how to take advantage of it, and what the penalties are; Shows the equivalence of Minimum-Variance, Distortionless Response (MVDR) and Space-Time Adaptive Processing (STAP) and how these algorithms can be used with ESA subarrays to mitigate interference.

Author : Robert J. Mailloux
Publisher : Morgan & Claypool Publishers
Page : 93 pages
File Size : 48,6 Mb
Release : 2007
Category : Antenna arrays
ISBN : 9781598291827

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Electronically Scanned Arrays by Robert J. Mailloux Pdf

Provides a compact but comprehensive treatment of the scanned array, from the underlying basis for array pattern behaviour to the engineering choices leading to successful design. The book describes the scanned array in terms of radiation from apertures and wire antennas and introduces the effects resulting directly from scanning.

Author : Arik D. Brown
Publisher : CRC Press
Page : 232 pages
File Size : 41,5 Mb
Release : 2017-12-19
Category : Technology & Engineering
ISBN : 9781439861646

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Electronically Scanned Arrays MATLAB® Modeling and Simulation by Arik D. Brown Pdf

"[Contains] more lengthy mathematical derivations than most {comparable books] ... for arrays, provides for a unique, stand-alone mathematical description that can be adopted by anyone trying to communicate the theoretical foundation for their array design...has insights from a practitioner that are unique. The MATLAB® scripts alone are worth the price." —Daniel C. Ross, Ph. D, Northrop Grumman Corporation Electronically Scanned Arrays: MATLAB® Modeling and Simulation is considered the first book to provide comprehensive modeling/simulation programs used to design and analyze Electronically Scanned Arrays (ESA), a key technology internationally in the scientific and engineering communities. Several books have been written about ESAs, but most cover only fundamental theory. Few, if any, provide the insightful, easy-to-use simulation tools found in this book. Obviously, MATLAB® is one of the greatest tools available for exploring and understanding science and engineering concepts, and we use MATLAB functions to easily and instantly calculate ESA patterns. However, to achieve a truly insightful and in-depth analysis of subarray architectures, conformal arrays, etc., it is imperative that users first develop a firm grasp of ESA fundamentals. Covers largely unexplored topics, such as reliability aspects and the application of ESAs in space This volume helps readers build that elemental understanding of how ESAs work. It also provides code to run as an aid, so that readers don’t have to start from scratch. The book expands on ESA principles and provides a modeling framework, using MATLAB to model applications of ESAs (i.e. pattern optimization, space-based applications, and reliability analysis). Presented code serves as an excellent vehicle to help readers master the analysis and simulation of ESAs. Exploring how difficult problems can be simplified with short, elegant solutions, this is an invaluable resource for students and others new to ESAs, as well as experienced practicing engineers who model ESAs at the systems level.

Author : John S. Williams
Publisher : SciTech Publishing
Page : 356 pages
File Size : 42,6 Mb
Release : 2020-12-10
Category : Technology & Engineering
ISBN : 9781785619298

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Electronic Scanned Array Design by John S. Williams Pdf

Electronic Scanned Array Design covers the fundamental principles of ESA antennas including basic design approaches and inherent design limitations. These insights enable better appreciation of existing and planned ESA systems including their application to earth observation. The material describes general design principles of aperture antennas applied to the specific case of ESA design.

Author : Anonim
Publisher : Unknown
Page : 700 pages
File Size : 45,9 Mb
Release : 1990
Category : Large space structures (Astronautics)
ISBN : STANFORD:36105029331407

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Large Space Structures & Systems in the Space Station Era by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 980 pages
File Size : 43,7 Mb
Release : 1998
Category : Aeronautics
ISBN : STANFORD:36105021108068

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International Aerospace Abstracts by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 332 pages
File Size : 46,9 Mb
Release : 1991
Category : Large space structures (Astronautics)
ISBN : UIUC:30112104414807

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Large Space Structures & Systems in the Space Station Era by Anonim Pdf

Author : Baoyan Duan,Yiqun Zhang,Jingli Du
Publisher : Springer Nature
Page : 282 pages
File Size : 41,9 Mb
Release : 2020-06-29
Category : Technology & Engineering
ISBN : 9789811560330

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Large Deployable Satellite Antennas by Baoyan Duan,Yiqun Zhang,Jingli Du Pdf

This book discusses the innovative design, cable-net design and analysis, control, deployment, development and applications of large space-deployable antennas. Drawing on the authors’ own work in this field, it describes and analyzes various typical deployable antennas, membrane antennas and super-large space-assembled antennas, while chiefly focusing on mesh antennas due to their wide range of applications. It also investigates forming–finding design and the analysis of cable-truss structures for high-precision reflector antennas, as well as deployment process control and deployment reliability based on flexible multibody dynamic analysis. The book covers not only mechanical structure performance, but also electromagnetic performance realization and stability. Lastly, it proposes an electrical equivalent method for mesh reflector antennas and a coupling model for the structural displacement field and electrostatic field. Given the nature of its content, the book is intended for researchers, graduate students and engineers in the field of space antennas.

Author : Anonim
Publisher : Unknown
Page : 2240 pages
File Size : 41,7 Mb
Release : 1997
Category : Electrical engineering
ISBN : OSU:32435059589358

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Electrical & Electronics Abstracts by Anonim Pdf

Author : William A. Imbriale,Steven Shichang Gao,Luigi Boccia
Publisher : John Wiley & Sons
Page : 772 pages
File Size : 47,7 Mb
Release : 2012-06-25
Category : Technology & Engineering
ISBN : 9781119993193

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Space Antenna Handbook by William A. Imbriale,Steven Shichang Gao,Luigi Boccia Pdf

This book addresses a broad range of topics on antennas for space applications. First, it introduces the fundamental methodologies of space antenna design, modelling and analysis as well as the state-of-the-art and anticipated future technological developments. Each of the topics discussed are specialized and contextualized to the space sector. Furthermore, case studies are also provided to demonstrate the design and implementation of antennas in actual applications. Second, the authors present a detailed review of antenna designs for some popular applications such as satellite communications, space-borne synthetic aperture radar (SAR), Global Navigation Satellite Systems (GNSS) receivers, science instruments, radio astronomy, small satellites, and deep-space applications. Finally it presents the reader with a comprehensive path from space antenna development basics to specific individual applications. Key Features: Presents a detailed review of antenna designs for applications such as satellite communications, space-borne SAR, GNSS receivers, science instruments, small satellites, radio astronomy, deep-space applications Addresses the space antenna development from different angles, including electromagnetic, thermal and mechanical design strategies required for space qualification Includes numerous case studies to demonstrate how to design and implement antennas in practical scenarios Offers both an introduction for students in the field and an in-depth reference for antenna engineers who develop space antennas This book serves as an excellent reference for researchers, professionals and graduate students in the fields of antennas and propagation, electromagnetics, RF/microwave/millimetrewave systems, satellite communications, radars, satellite remote sensing, satellite navigation and spacecraft system engineering, It also aids engineers technical managers and professionals working on antenna and RF designs. Marketing and business people in satellites, wireless, and electronics area who want to acquire a basic understanding of the technology will also find this book of interest.

Author : Gerry E. Hendershot,Karl E. Bauman
Publisher : Department of Health and Human Services Public Health Service National Center for Health Statistics
Page : 982 pages
File Size : 52,7 Mb
Release : 1988
Category : Medical
ISBN : 0840602227

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Use of Services for Family Planning and Infertility, United States by Gerry E. Hendershot,Karl E. Bauman Pdf

Author : William A. Imbriale
Publisher : John Wiley & Sons
Page : 594 pages
File Size : 46,7 Mb
Release : 2006-08-04
Category : Technology & Engineering
ISBN : 9780470052778

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Spaceborne Antennas for Planetary Exploration by William A. Imbriale Pdf

JPL spacecraft antennas-from the first Explorer satellite in 1958 to current R & D Spaceborne Antennas for Planetary Exploration covers the development of Jet Propulsion Laboratory (JPL) spacecraft antennas, beginning with the first Explorer satellite in 1958 through current research and development activities aimed at future missions. Readers follow the evolution of all the new designs and technological innovations that were developed to meet the growing demands of deep space exploration. The book focuses on the radio frequency design and performance of antennas, but covers environmental and mechanical considerations as well. There is additionally a thorough treatment of all the analytical and measurement techniques used in design and performance assessment. Each chapter is written by one or more leading experts in the field of antenna technology. The presentation of the history and technology of spaceborne antennas is aided by several features: * Photographs and drawings of JPL spacecraft * Illustrations to help readers visualize concepts and designs * Tables highlighting and comparing the performance of the antennas * Bibliographies at the end of each chapter leading to a variety of primary and secondary source material This book complements Large Antennas of the Deep Space Network (Wiley 2002), which surveys the ground antennas covered in support of spacecraft. Together, these two books completely cover all JPL antenna technology, in keeping with the JPL Deep Space Communications and Navigation Series mission to capture and present the many innovations in deep space telecommunications over the past decades. This book is a fascinating and informative read for all individuals working in or interested in deep space telecommunications.

Author : Anonim
Publisher : Unknown
Page : 702 pages
File Size : 45,7 Mb
Release : 1995
Category : Aeronautics
ISBN : UIUC:30112048646605

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Scientific and Technical Aerospace Reports by Anonim Pdf

Author : Mark A. Richards,William L. Melvin
Publisher : SciTech Publishing
Page : 0 pages
File Size : 54,5 Mb
Release : 2023-02-17
Category : Technology & Engineering
ISBN : 1839533811

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Principles of Modern Radar by Mark A. Richards,William L. Melvin Pdf

Principles of Modern Radar: Basic Principles is a comprehensive text for courses in radar systems and technology, a professional training textbook for formal in-house courses and for new hires; a reference for ongoing study following a radar short course and a self-study and professional reference book.