The Ambiguity Function of the Stepped Frequency Radar PDF Download
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Author: Jen-Chih Huang
Publisher:
ISBN:
Category :
Languages : en
Pages : 84
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Book Description
High range resolution radar systems have many advantages such as target classification, resolution of multiple target, accurate range profile and detection of low radar cross section (RCS) targets in clutter. High range resolution requires large bandwidths. Stepped frequency waveforms can achieve high range resolution by increasing the effective bandwidth without increasing the instantaneous bandwidth which would increase the hardware requirements including higher analog to digital (AID) sampling rates which are limited by existing technology. Under today's hardware limitations, the stepped frequency waveform becomes very important. This thesis briefly discusses the stepped frequency radar and associated signal processing, it investigates the ambiguity function of the stepped frequency waveform and the stepped frequency radar system. Mathematical expressions of ambiguity functions are derived and the improvement of clutter suppression capability for the stepped frequency radar by rejecting initial pulses is also discussed.
Author: Jen-Chih Huang
Publisher:
ISBN:
Category :
Languages : en
Pages : 84
Get Book Here
Book Description
High range resolution radar systems have many advantages such as target classification, resolution of multiple target, accurate range profile and detection of low radar cross section (RCS) targets in clutter. High range resolution requires large bandwidths. Stepped frequency waveforms can achieve high range resolution by increasing the effective bandwidth without increasing the instantaneous bandwidth which would increase the hardware requirements including higher analog to digital (AID) sampling rates which are limited by existing technology. Under today's hardware limitations, the stepped frequency waveform becomes very important. This thesis briefly discusses the stepped frequency radar and associated signal processing, it investigates the ambiguity function of the stepped frequency waveform and the stepped frequency radar system. Mathematical expressions of ambiguity functions are derived and the improvement of clutter suppression capability for the stepped frequency radar by rejecting initial pulses is also discussed.
Author: Jen-Chih Huang
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
High range resolution radar systems have many advantages such as target classification, resolution of multiple target, accurate range profile and detection of low radar cross section (RCS) targets in clutter. High range resolution requires large bandwidths. Stepped frequency waveforms can achieve high range resolution by increasing the effective bandwidth without increasing the instantaneous bandwidth which would increase the hardware requirements including higher analog to digital (AID) sampling rates which are limited by existing technology. Under today's hardware limitations, the stepped frequency waveform becomes very important. This thesis briefly discusses the stepped frequency radar and associated signal processing, it investigates the ambiguity function of the stepped frequency waveform and the stepped frequency radar system. Mathematical expressions of ambiguity functions are derived and the improvement of clutter suppression capability for the stepped frequency radar by rejecting initial pulses is also discussed.
Author: Nadav Levanon
Publisher: John Wiley & Sons
ISBN: 0471663077
Category : Technology & Engineering
Languages : en
Pages : 432
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Book Description
A text and general reference on the design and analysis of radar signals As radar technology evolves to encompass a growing spectrum of applications in military, aerospace, automotive, and other sectors, innovations in digital signal processing have risen to meet the demand. Presenting a long overdue, up-to-date, dedicated resource on radar signals, the authors fill a critical gap in radar technology literature. Radar Signals features in-depth coverage of the most prevalent classical and modern radar signals used today, as well as new signal concepts developed in recent years. Inclusion of key MATLAB software codes throughout the book demonstrates how they dramatically simplify the process of describing and analyzing complex signals. Topics covered include: * Matched filter and ambiguity function concepts * Basic radar signals, with both analytical and numerical analysis * Frequency modulated and phase-coded pulses * Complete discussion of band-limiting schemes * Coherent LFM pulse trains-the most popular radar signal * Diversity in pulse trains, including stepped frequency pulses * Continuous-wave signals * Multicarrier phase-coded signals Combining lucid explanation, preferred signal tables, MATLAB codes, and problem sets in each chapter, Radar Signals is an essential reference for professionals-and a systematic tutorial for any seeking to broaden their knowledge base in this dynamic field.
Author: Charles Cook
Publisher: Elsevier
ISBN: 0323146309
Category : Technology & Engineering
Languages : en
Pages : 550
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Book Description
Radar Signals: An Introduction to Theory and Application introduces the reader to the basic theory and application of radar signals that are designated as large time-bandwidth or pulse-compression waveforms. Topics covered include matched filtering and pulse compression; optimum predetection processing; the radar ambiguity function; and the linear frequency modulation waveform and matched filter. Parameter estimation and discrete coded waveforms are also discussed, along with the effects of distortion on matched-filter signals. This book is comprised of 14 chapters and begins with an overview of the concepts and techniques of pulse compression matched filtering, with emphasis on coding source and decoding device. The discussion then turns to the derivation of the matched-filter properties in order to maximize the signal-to-noise ratio; analysis of radar ambiguity function using the principle of stationary phase; parameter estimation and the method of maximum likelihood; and measurement accuracies of matched-filter radar signals. Waveform design criteria for multiple and dense target environments are also considered. The final chapter describes a number of techniques for designing microwave dispersive delays. This monograph will be a useful resource for graduate students and practicing engineers in the field of radar system engineering.
Author: Paulo A. Soares
Publisher:
ISBN: 9781423584896
Category :
Languages : en
Pages : 104
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Book Description
This thesis investigates the use of the step frequency waveform, its design and analysis using the ambiguity function. The step frequency waveform consists of a series of N pulses each with a pulse width of z, and whose frequency is increased from pulse to pulse in steps of delta f. A design procedure for detection of small targets with a surface (land or sea) based step frequency radar employing a high pulse repetition frequency (PRF) waveform is developed. The proposed method determines the waveform parameters fo given radar specifications. A simple graphical implementation as well as a computer implementation are presented. The theoretical dimensions of the step frequency waveform are defined and verified for some waveforms with parameters similar to the waveform of interest. Finally, the ambiguity function is used to analyze the step frequency waveform.
Author: M. Jankiraman
Publisher: SciTech Publishing
ISBN: 1891121561
Category : Technology & Engineering
Languages : en
Pages : 377
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Book Description
This book deals with the basic theory for design and analysis of Low Probability of Intercept (LPI) radar systems. The design of one such multi-frequency high resolution LPI radar, PANDORA, is covered. This work represents the first time that the topic of multi-frequency radars is discussed in such detail and it is based on research conducted by the author in The Netherlands. The book provides the design tools needed for development, design, and analysis of high resolution radar systems for commercial as well as military applications. Software written in MATLAB and C++ is provided to guide the reader in calculating radar parameters and in ambiguity function analysis. Some radar simulation software is also included.
Author: D.E. Vakmann
Publisher: Springer Science & Business Media
ISBN: 3642882137
Category : Technology & Engineering
Languages : en
Pages : 261
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Book Description
This book is devoted to some of the problems encountered in the theory of sophisticated signals used in radar. The term sophisticated signal is under stood to mean a signal for which the product of the signal duration by the spectrum width substantially exceeds unity. Although it is impossible to draw an exact borderline between simple and sophisticated signals, the term "sophisticated signal" is sufficient to define one of the principal characteristics of modern radar. Recently, various sophisticated signals (frequency-modulated pulses, coded groups, phase-modulated signals, etc.) have found use in radar. This makes it possible to improve the resolution, to ensure simultaneous measurements of the range and range rate of a target, to elecrically scan over finite angular dimensions, etc. Although the realization of such potentialities is associated with substantial difficulties, one can say with certainty that "classical" radar technology, which uses simple signals at constant frequency and duty cycle, yields to more complex methods based on the use of wide-band signals of the sophisticated structure. The properties of radar signals, which characterize the measurement of a target's range and range rate, are described by the Woodward ambiguity function. The role of this function is similar to that of the antenna pattern, i.e., the ambiguity function defines the accuracy and resolution of the range and range rate measurements to the same extent as the antenna pattern de fines the accuracy and resolution of the azimuth and elevation measurements.
Author: Bassem R. Mahafza
Publisher: CRC Press
ISBN: 9781584885320
Category : Technology & Engineering
Languages : en
Pages : 678
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Book Description
An introduction to radar systems should ideally be self-contained and hands-on, a combination lacking in most radar texts. The first edition of Radar Systems Analysis and Design Using MATLAB® provided such an approach, and the second edition continues in the same vein. This edition has been updated, expanded, and reorganized to include advances in the field and to be more logical in sequence. Ideal for anyone encountering the topic for the first time or for professionals in need of on-the-job reference, this book features an abundance of MATLAB programs and code. Radar Systems Analysis and Design Using MATLAB®, Second Edition presents the fundamentals and principles of radar along with enough rigorous mathematical derivations to ensure that you gain a deep understanding. The author has extensively revised chapters on radar cross-section and polarization, matched filter and radar ambiguity function, and radar wave propagation. He also added information on topics such as PRN codes, multipath and refraction, clutter and MTI processing, and high range resolution. With all MATLAB functions updated to reflect version 7.0 and an expanded set of self-test problems, you will find this up-to-date text to be the most complete treatment of radar available, providing the hands-on tools that will enrich your learning.
Author: Baixiao Chen
Publisher: John Wiley & Sons
ISBN: 111860959X
Category : Science
Languages : en
Pages : 438
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Book Description
Analyzes and discusses the operating principle, signal processing method, and experimental results of this advanced radar technology This book systematically discusses the operating principle, signal processing method, target measurement technology, and experimental results of a new kind of radar called synthetic impulse and aperture radar (SIAR). The purpose is to help readers acquire an insight into the concept and principle of the SIAR, to know its operation mode, signal processing method, the difference between the traditional radar and itself, the designing ideals, and the developing method. It includes 10 chapters. Chapter 1 gives an introduction to the basic principle of SIAR and its characteristic of four antis. Chapter 2 introduces the operating principles and system constitution of SIAR. Chapter 3 presents the main waveforms and the corresponding signal processing methods. Chapter 4 is about the long-time integration technique. Chapter 5 shows the high-accuracy measurement and tracking of 4D parameters of target in SIAR. The range-angle coupling and decoupling are introduced in Chapter 6, where a criteria for transmit frequency optimization of array elements is studied to overcome the coupling among range, azimuth and elevation. In Chapter 7, detection and tracking of targets in strong interference background is investigated. Chapter 8 analyzes quantitatively the influence of array error on the tracking accuracy of SIAR. Expansion of impulse and aperture synthesis to HF band and microwave band are introduced respectively in Chapter 9 and Chapter 10. The operating principle of the novel bi-static surface wave radar system, as well as the experimental system and the experimental results are included in Chapter 9. Written by a highly experienced author with extensive knowledge of SIAR (Chen), the book can be used as a reference for engineering technical personnel and scientific research personnel working in the research of SIAR, MIMO radar, digital radar or other new type of radar. It can also be a reference for teachers and students in universities who engage in related professional work. Details the operating principle, signal processing method, target measurement technology, and experimental results of synthetic impulse and aperture radar (SIAR) Expands the technique of impulse and aperture synthesisfrom the VHF band to the HF band and the microwave band Written by a leading author with many years’ research and practical experience in sparse array SIAR, a typical MIMO radar Engineers, researchers and postgraduates working in radar engineering will find this an invaluable resource.
Author: Bassem R. Mahafza
Publisher: CRC Press
ISBN: 1351665251
Category : Computers
Languages : en
Pages : 706
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Book Description
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.
