Download or read book Near Field Bistatic RCS Radar Cross Section Measurements written by and published by . This book was released on 1989 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Final Technical Report presents the results of a feasibility investigation of a technique for calculating the far-field radar cross section of an object based upon measurements made in the near-field of the object. This technique is an extension of existing planar near-field antenna measurement technology, and is capable of measuring monostatic radar cross section and bistatic radar cross section at both narrow and wide angles. Included are the detailed formulation of the theory of near-field planar bistatic radar cross section measurement, and discussion of details of the mechanical scanner and software implementation. The comparison of measurement with predictions is presented; the agreement is excellent, and suggests that a larger-scale demonstration would be appropriate. Also included are concepts for reducing the amount of data required for reconstructing radar cross section, and a discussion of limitations of this method of radar cross-section measurement. Specific recommendations are presented for technology development areas that should be pursued to mature this measurement technique into a viable, operational technology. Among those areas are calibration, data handling, computational optimization, data analysis, operational considerations, and additional theoretical development.

Download or read book Radar Cross Section Measurements written by Eugene F. Knott and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: The original campus of the University of Michigan was nearly a perfect square about a half-mile along a side. A street-sized walk, appropriately called the Diag, runs diagonally across this square, connecting its southeast and northwest corners. In 1904 a new engineering building was either started or finished (I do not remember which) to house classrooms. When another engineering building was built on the expanded campus across the street from it many years later, the old building came to be known as West Engine, to distinguish it from the new East Engine. Old West Engine is (or maybe by now, was) a four-story, L-shaped structure that stood at the southeast corner of the original campus. It was built with an arch in it to straddle the Diag at the apex of the L. You walked over the Engineering Arch to get from one leg of the L to the other if you were inside the building, and you walked under it when you entered the campus from the southeast corner. Affixed to the masonry wall of the arch was a plaque I often noted in passing. It bore a quote attributed to Horace Greeley (1811-1872), who I did not know at the time was the founder, editor, and publisher of the New York Tribune. It said, simply, Young man, when theory and practice differ, use your horse sense. The suggestion seems worthy of an exclamation point instead of a period, but I do not remember if it had one.

Download or read book A Planar Near Field Scanning Technique for Bistatic Radar Cross Section Measurements written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-28 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: A progress report on the development of a bistatic radar cross section (RCS) measurement range is presented. A technique using one parabolic reflector and a planar scanning probe antenna is analyzed. The field pattern in the test zone is computed using a spatial array of signal sources. It achieved an illumination pattern with 1 dB amplitude and 15 degree phase ripple over the target zone. The required scan plane size is found to be proportional to the size of the desired test target. Scan plane probe sample spacing can be increased beyond the Nyquist lambda/2 limit permitting constant probe sample spacing over a range of frequencies. Tuhela-Reuning, S. and Walton, E. K. Unspecified Center NAG3-1125...

Download or read book Evaluation of the Bistatic Equivalence Theorem for the Near and Far Field Radar Cross Section of Complex Targets written by and published by . This book was released on 1989 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research examined the applicability of the monostatic-bistatic equivalence theorem (MBET) and associated extensions in determining the extent to which correlation exists between monostatic and bistatic data for both the near and far-field. A secondary objective was to determine whether reliable bistatic near-field radar cross section (RCS) data could be collected on a range originally designed to take monostatic far-field measurements. Dr. David Falconer developed two extensions of the MBET in an effort to estimate the bistatic RCS pattern in both the near and far-field by measuring the monostatic RCS pattern at one-half the bistatic angle, at a reduced frequency, and, for the near-field case, at an adjusted target-to-receiver separation range. The pattern representation and accuracy of these two extensions were examined by measuring the RCS of an ogive, a circular flat plate, and two circular cylinders of different lengths. Theses.

Download or read book Radar Cross Section written by Eugene F. Knott and published by SciTech Publishing. This book was released on 2004-06-30 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: The leading text and reference on radar cross section (RCS) theory and applications, this work presents a comparison of two radar signal strengths. One is the strength of the radar bean sweeping over a target, the other is the strength of the reflected echo senses by the receiver. This book shows how the RCS "gauge" can be predicted for theoretical objects.

Download or read book Methods of Radar Cross section Analysis written by J.W. Jr. Crispin and published by Elsevier. This book was released on 2013-06-11 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods of Radar Cross-section Analysis

Download or read book Bistatic Radar Cross Section RCS Characterization of Complex Objects written by Robert Eigel and published by . This book was released on 1999-06-01 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research addresses some phenomenological aspects of bistatic scattering from a complex object with an emphasis on specular, shadowing, dihedral, and cavity effects. Five targets are investigated for their simplicity and ability to highlight certain scattering phenomena. Direct measurements of scattered electromagnetic energy and simulation data is gathered for a frequency bandwidth of 6-18 GHz. Both ray tracing and scattering center approaches are used to describe the bistatic mechanisms. An appraisal of the effectiveness and utility of the monostatic-to-bistatic equivalence theorems (Kell's and Crispin's) and several commercial scattering prediction codes is also accomplished. Simulation data is generated from two different electromagnetic scattering prediction codes, Xpatch and FISC. Xpatch is a physical optics (PO) based code while FISC is a more rigorous method of moments (MOM) based tool. This data is utilized to achieve three objectives: (1) study Kell's and Crispin's monostatic-to-bistatic equivalence theorems (MBET) for a complex object through theoretical derivations and comparison of measured and simulated data sets, (2) evaluate the performance of Xpatch and FISC through direct comparisons to measured data, and (3) gain insight into the bistatic scattering phenomenology while extracting appropriate rules-of-thumb for bistatic scattering predictions. These rules of thumb are proposed to help guide the reader in evaluating the bistatic RCS of complex shapes in general.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radar Cross Sections of Complex Objects written by W. Ross Stone and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1990 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radar Cross Section Analysis and Control written by Asoke K. Bhattacharyya and published by Artech House Radar Library (Ha. This book was released on 1991 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference describes techniques for controlling the RCS of targets, provides analytical methods for estimating RCS, develops models for the design of low RCS targets and antennas, and discusses several RCS enhancement techniques.

Download or read book A Planar Near field Scanning System for the Measurement of Bistatic Radar Cross section in a Compact Range Environment written by Stephen R. Tuhela-Reuning and published by . This book was released on 1991 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Active Radar Cross Section Reduction written by Hema Singh and published by Cambridge University Press. This book was released on 2015-03-02 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the active and passive radar cross section (RCS) estimation and techniques to examine the low observable aerospace platforms. It begins with the fundamentals of RCS, followed by the dielectric, magnetic and metamaterials parameters of the constituent materials and then explains various methods and the emerging trends followed in this area of study. The RCS estimation of phased array including the mutual coupling effect is also presented in detail in the book. The active RCS reduction is carefully touched upon through the performance of phased arrays, sidelobe cancellers and mitigation of multipath effect. Providing information on various adaptive algorithms like least mean square (LMS), recursive least square (RLS) and weighted least square algorithms, the authors also mention the recent developments in the area of embedded antennas, conformal load bearing antenna, metamaterials and frequency selective surface (FSS) based RCS reduction.

Download or read book High Resolution Radar Cross section Imaging written by Dean L. Mensa and published by Artech House Radar Library (Ha. This book was released on 1991 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: With this book practitioners responsible for analyzing, specifying or evaluating RCS imaging systems will be able to define performance limits using basic physical and mathematical principles. Information on instrumentation systems for acquiring data and two new chapters on applications of new techniques are included. The emphasis of the book is on imaging as applied to radar cross-section measurements. With it the reader will learn how to use the latest techniques to perform RCS imaging in laboratory or outdoor test ranges. This book is suitable for self-study or for use in a short course for practising engineers.

Download or read book Analysis and Testing of a Bistatic Radar Cross Section Measurement Capability for the AFIT Anechoic Chamber written by Timothy D. McCool and published by . This book was released on 1990 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research effort examined the feasibility of performing bistatic radar cross section (RCS) measurements in the AFIT anechoic chamber. The capability was established to measure the bistatic RCS of a target versus frequency and versus target azimuth angle. In either case, one of three bistatic angles (angle between transmit and receive antennas) is available: 45 degrees, 90 degrees, and 135 degrees. Accurate bistatic RCS measurements were obtained using a CW radar and utilizing background subtraction, bistatic calibration, and software range gating. Simple targets were selected for validation purposes since their bistatic RCS could be predicted. These consisted of spheres and flat plates (square, triangle, and five sided). Several computer codes were utilized for system validation. Two codes based on the Uniform Theory of Diffraction were used to predict the scattering from the flat plates. A program using a Mie series solution provided the exact scattering from the flat plates. A program using a Mie series solution provided the exact scattering for the spheres, which were used for both RCS predictions and system calibrations.

Download or read book The Calibration of Bistatic Radar Cross Section Measurements written by Christopher J. Bradley and published by . This book was released on 2001-03-01 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in signal processing and remote sensing have highlighted the importance of bistatic radar systems for the purposes of environmental monitoring, surveillance, and tracking radar. The calibration of such systems has been problematic-much more so than similar monostatic systems, primarily as a result of the lack of reference objects suitable for calibrating at any given bistatic angle. This research deals with the problems of calibrating full-polarimetric laboratory-environment bistatic radar systems, including the lack of suitable calibration targets and procedures, and operational considerations such as alignment and mounting. Several popular bistatic calibration techniques are classified, evaluated, and comparisons are made between the relative merits of various calibration objects. The analysis addresses sensitivity to target alignment error, sensitivity to polarization impurity, and ease of implementation. Both theoretical concepts and practical considerations are discussed, based on measurements accomplished at the European Microwave Signature Laboratory (EMSL) of the Joint Research Center (JRC) in Ispra, Italy. Significant gains in co-polarized channel accuracy and cross- polarization purity are realized with calibrations that utilize the complete system distortion model and these conclusions are discussed in detail.

Download or read book Handbook of Radar Signal Analysis written by Bassem R. Mahafza and published by CRC Press. This book was released on 2021-08-17 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new handbook on radar signal analysis adopts a deliberate and systematic approach. It uses a clear and consistent level of delivery while maintaining strong and easy-to-follow mathematical details. The emphasis of this book is on radar signal types and their relevant signal processing and not on radar systems hardware or components. This handbook serves as a valuable reference to a wide range of audience. More specifically, college-level students, practicing radar engineers, as well as casual readers of the subject are the intended target audience of the first few chapters of this book. As the book chapters progress, these grow in complexity and specificity. Accordingly, later chapters are intended for practicing engineers, graduate college students, and advanced readers. Finally, the last few chapters contain several special topics on radar systems that are both educational and scientifically entertaining to all readers. The presentation of topics in this handbook takes the reader on a scientific journey whose major landmarks comprise the different radar subsystems and components. In this context, the chapters follow the radar signal along this journey from its birth to the end of its life. Along the way, the different relevant radar subsystems are analyzed and discussed in great detail. The chapter contributors of this new handbook comprise experienced academia members and practicing radar engineers. Their combined years of academic and real-world experiences are in excess of 175. Together, they bring a unique, easy-to-follow mix of mathematical and practical presentations of the topics discussed in this book. See the "Chapter Contributors" section to learn more about these individuals.

Download or read book Radar Systems Analysis and Design Using MATLAB written by Bassem R. Mahafza and published by CRC Press. This book was released on 2022-03-29 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of this ground-breaking and widely used book introduced a comprehensive textbook on radar systems analysis and design providing hands-on experience facilitated by its companion MATLAB® software. The book very quickly turned into a bestseller. Based on feedback provided by several users and drawing from the author's own teaching experience, the 4th edition adopts a new approach. The presentation in this edition takes the reader on a scientific journey whose major landmarks comprise the different radar sub-systems and components. Along the way, the different relevant radar subsystems are analyzed and discussed in great level of detail. Understanding the radar signal types and their associated radar signal processing techniques are key to understating how radar systems function. Each chapter provides the necessary mathematical and analytical coverage required for a sound understanding of radar theory. Additionally, dedicated MATLAB® functions/programs enhance the understanding of the theory and establish a means to perform radar system analysis and design trades. The software provides users with numerous varieties of graphical outputs. Additionally, a complete set of MATLAB® code that generates all plot and graphs found within the pages of this textbook are also available. All companion MATLAB® code can be downloaded from the book’s web page. The 4th Edition: •Takes advantage of the new features offered by MATLAB® 2021 release •Brings the text to a current state of the art •Incorporates much of the feedback received from users using this book as a text and from practicing engineers; accordingly, several chapters have been rewritten •Presents unique topics not found in other books •Maintains a comprehensive and exhaustive presentation •Restructures the presentation to be more convenient for course use. •Provides a post-course reference for engineering students as they enter the field •Offers a companion solutions manual for instructors The 4th edition will serve as a valuable tool to students and radar engineers by helping them better analyze and understand the many topics of radar systems. This book is written primarily as a graduate-level textbook, although parts of it can be used as a senior level course. A companion solutions manual has been developed for use by instructors.