Electronically Scanned Arrays Esas And K Space Gain Formulation

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Electronically Scanned Arrays (ESAs) and K-space Gain Formulation

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Author : Roger A. Dana
Publisher :
ISBN 13 : 9783030046798
Total Pages : pages
Book Rating : 4.0/5 (467 download)

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

Download or read book Electronically Scanned Arrays (ESAs) and K-space Gain Formulation written by Roger A. Dana and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Electronically Scanned Arrays (ESAs) and K-Space Gain Formulation

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Author : Roger A. Dana
Publisher : Springer
ISBN 13 : 3030046788
Total Pages : 113 pages
Book Rating : 4.0/5 (3 download)

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

Download or read book Electronically Scanned Arrays (ESAs) and K-Space Gain Formulation written by Roger A. Dana and published by Springer. This book was released on 2019-02-14 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Active Electronically Scanned Arrays

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Author : Arik D. Brown
Publisher : John Wiley & Sons
ISBN 13 : 1119749050
Total Pages : 276 pages
Book Rating : 4.1/5 (197 download)

Book Synopsis Active Electronically Scanned Arrays by : Arik D. Brown

Download or read book Active Electronically Scanned Arrays written by Arik D. Brown and published by John Wiley & Sons. This book was released on 2021-12-14 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Active Electronically Scanned Arrays: Fundamentals and Applications, electromagnetics expert Dr. Arik D. Brown delivers a foundational treatment of active electronically scanned arrays (AESAs) ideal for engineering students and professionals. The distinguished author provides an overview of the primary subsystems of an AESA and detailed explanations of key design concepts and fundamentals for subsystems, including antenna array elements, transmit/receive modules, and beamformers. Performance results for various AESA architectures often found in industry, including analog, subarrayed, and digital beamforming AESAs, are discussed. With a focus on practical knowledge and applications, Active Electronically Scanned Arrays: Fundamentals and Applications offers an accessible overview of a technology critical to the implementation of collision avoidance in cars, air surveillance radar, communication antennas, and defense technologies. The book also includes: A thorough introduction to AESAs, including a top-level block diagram view and explanations of key components and subsystems Detailed explanations of the impact of AESAs on mission applications including Radar, Electronic Attack (EA), Electronic Support Measures (ESM), SIGINT and Communications Comprehensive explorations of antenna array elements, transmit/receive modules, and beamformers including their purpose, functions, and practical design considerations In-depth examinations of AESA architecture performance for current and future systems Utility of AESAs for implementing adaptive beamforming for Electronic Counter-Countermeasures (ECCM) Perfect for electrical engineers working with active electronically scanned arrays, electronic warfare technologies, radar, or communications, Active Electronically Scanned Arrays: Fundamentals and Applications will also prove to be an invaluable resource for defense students undertaking military education and training.

Electronic Scanned Array Design

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Author : John S. Williams
Publisher : SciTech Publishing
ISBN 13 : 1785619292
Total Pages : 356 pages
Book Rating : 4.7/5 (856 download)

Book Synopsis Electronic Scanned Array Design by : John S. Williams

Download or read book Electronic Scanned Array Design written by John S. Williams and published by SciTech Publishing. This book was released on 2020-12-10 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Electronically Scanned Arrays MATLAB® Modeling and Simulation

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Author : Arik D. Brown
Publisher : CRC Press
ISBN 13 : 1439861641
Total Pages : 232 pages
Book Rating : 4.4/5 (398 download)

Book Synopsis Electronically Scanned Arrays MATLAB® Modeling and Simulation by : Arik D. Brown

Download or read book Electronically Scanned Arrays MATLAB® Modeling and Simulation written by Arik D. Brown and published by CRC Press. This book was released on 2017-12-19 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: "[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.

Large Space Structures & Systems in the Space Station Era

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Author :
Publisher :
ISBN 13 :
Total Pages : 700 pages
Book Rating : 4.F/5 ( download)

Book Synopsis Large Space Structures & Systems in the Space Station Era by :

Download or read book Large Space Structures & Systems in the Space Station Era written by and published by . This book was released on 1990 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

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Author :
Publisher :
ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)

Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

International Aerospace Abstracts

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Author :
Publisher :
ISBN 13 :
Total Pages : 980 pages
Book Rating : 4.F/5 ( download)

Book Synopsis International Aerospace Abstracts by :

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Large Space Structures & Systems in the Space Station Era

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Author :
Publisher :
ISBN 13 :
Total Pages : 334 pages
Book Rating : 4.:/5 (3 download)

Book Synopsis Large Space Structures & Systems in the Space Station Era by :

Download or read book Large Space Structures & Systems in the Space Station Era written by and published by . This book was released on 1991 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Principles of Modern Radar

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Author : Mark A. Richards
Publisher : SciTech Publishing
ISBN 13 : 9781839533815
Total Pages : 0 pages
Book Rating : 4.5/5 (338 download)

Book Synopsis Principles of Modern Radar by : Mark A. Richards

Download or read book Principles of Modern Radar written by Mark A. Richards and published by SciTech Publishing. This book was released on 2023-02-17 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Electrical & Electronics Abstracts

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Author :
Publisher :
ISBN 13 :
Total Pages : 2240 pages
Book Rating : 4.3/5 (243 download)

Book Synopsis Electrical & Electronics Abstracts by :

Download or read book Electrical & Electronics Abstracts written by and published by . This book was released on 1997 with total page 2240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Use of Services for Family Planning and Infertility, United States, 1982

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Author : Gerry E. Hendershot
Publisher :
ISBN 13 : 9780840602220
Total Pages : 982 pages
Book Rating : 4.6/5 (22 download)

Book Synopsis Use of Services for Family Planning and Infertility, United States, 1982 by : Gerry E. Hendershot

Download or read book Use of Services for Family Planning and Infertility, United States, 1982 written by Gerry E. Hendershot and published by . This book was released on 1988 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1982 statistics on the use of family planning and infertility services presented in this report are preliminary results from Cycle III of the National Survey of Family Growth (NSFG), conducted by the National Center for Health Statistics. Data were collected through personal interviews with a multistage area probability sample of 7969 women aged 15-44. A detailed series of questions was asked to obtain relatively complete estimates of the extent and type of family planning services received. Statistics on family planning services are limited to women who were able to conceive 3 years before the interview date. Overall, 79% of currently mrried nonsterile women reported using some type of family planning service during the previous 3 years. There were no statistically significant differences between white (79%), black (75%) or Hispanic (77%) wives, or between the 2 income groups. The 1982 survey questions were more comprehensive than those of earlier cycles of the survey. The annual rate of visits for family planning services in 1982 was 1077 visits /1000 women. Teenagers had the highest annual visit rate (1581/1000) of any age group for all sources of family planning services combined. Visit rates declined sharply with age from 1447 at ages 15-24 to 479 at ages 35-44. Similar declines with age also were found in the visit rates for white and black women separately. Nevertheless, the annual visit rate for black women (1334/1000) was significantly higher than that for white women (1033). The highest overall visit rate was for black women 15-19 years of age (1867/1000). Nearly 2/3 of all family planning visits were to private medical sources. Teenagers of all races had higher family planning service visit rates to clinics than to private medical sources, as did black women age 15-24. White women age 20 and older had higher visit rates to private medical services than to clinics. Never married women had higher visit rates to clinics than currently or formerly married women. Data were also collected in 1982 on use of medical services for infertility by women who had difficulty in conceiving or carrying a pregnancy to term. About 1 million ever married women had 1 or more infertility visits in the 12 months before the interview. During the 3 years before interview, about 1.9 million women had infertility visits. For all ever married women, as well as for white and black women separately, infertility services were more likely to be secured from private medical sources than from clinics. The survey design, reliability of the estimates and the terms used are explained in the technical notes.

Large Deployable Satellite Antennas

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Author : Baoyan Duan
Publisher : Springer Nature
ISBN 13 : 9811560331
Total Pages : 282 pages
Book Rating : 4.8/5 (115 download)

Book Synopsis Large Deployable Satellite Antennas by : Baoyan Duan

Download or read book Large Deployable Satellite Antennas written by Baoyan Duan and published by Springer Nature. This book was released on 2020-06-29 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Spaceborne Antennas for Planetary Exploration

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Author : William A. Imbriale
Publisher : John Wiley & Sons
ISBN 13 : 0470052775
Total Pages : 594 pages
Book Rating : 4.4/5 (7 download)

Book Synopsis Spaceborne Antennas for Planetary Exploration by : William A. Imbriale

Download or read book Spaceborne Antennas for Planetary Exploration written by William A. Imbriale and published by John Wiley & Sons. This book was released on 2006-08-04 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

NASA SP.

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Author :
Publisher :
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.:/5 (319 download)

Book Synopsis NASA SP. by :

Download or read book NASA SP. written by and published by . This book was released on 1991 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fundamentals of Electric Propulsion

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Author : Dan M. Goebel
Publisher : John Wiley & Sons
ISBN 13 : 0470436263
Total Pages : 528 pages
Book Rating : 4.4/5 (74 download)

Book Synopsis Fundamentals of Electric Propulsion by : Dan M. Goebel

Download or read book Fundamentals of Electric Propulsion written by Dan M. Goebel and published by John Wiley & Sons. This book was released on 2008-12-22 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout most of the twentieth century, electric propulsion was considered the technology of the future. Now, the future has arrived. This important new book explains the fundamentals of electric propulsion for spacecraft and describes in detail the physics and characteristics of the two major electric thrusters in use today, ion and Hall thrusters. The authors provide an introduction to plasma physics in order to allow readers to understand the models and derivations used in determining electric thruster performance. They then go on to present detailed explanations of: Thruster principles Ion thruster plasma generators and accelerator grids Hollow cathodes Hall thrusters Ion and Hall thruster plumes Flight ion and Hall thrusters Based largely on research and development performed at the Jet Propulsion Laboratory (JPL) and complemented with scores of tables, figures, homework problems, and references, Fundamentals of Electric Propulsion: Ion and Hall Thrusters is an indispensable textbook for advanced undergraduate and graduate students who are preparing to enter the aerospace industry. It also serves as an equally valuable resource for professional engineers already at work in the field.

Government Reports Announcements & Index

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Author :
Publisher :
ISBN 13 :
Total Pages : 1398 pages
Book Rating : 4.:/5 (31 download)

Book Synopsis Government Reports Announcements & Index by :

Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994 with total page 1398 pages. Available in PDF, EPUB and Kindle. Book excerpt: