Search results for ""scitech publishing inc""

This book is an essential resource for researchers involved in designing antennas and RCS calculations. It is also useful for students studying high frequency diffraction techniques. It contains basic original ideas of the Physical Theory of Diffraction (PTD), examples of its practical application, and its validation by the mathematical theory of diffraction. The derived analytic expressions are convenient for numerical calculations and clearly illustrate the physical structure of the scattered field. The text's key topics include: Theory of diffraction at black bodies introduces the Shadow Radiation, a fundamental component of the scattered field; RCS of finite bodies of revolution-cones, paraboloids, etc.; models of construction elements for aircraft and missiles; scheme for measurement of that part of a scattered field which is radiated by the diffraction (so-called nonuniform) currents induced on scattering objects; development of the parabolic equation method for investigation of edge-diffraction; and a new exact and asymptotic solutions in the strip diffraction problems, including scattering at an open resonator.

Read more less

This book presents the theory of adjoint sensitivity analysis for high frequency applications through time-domain electromagnetic simulations in MATLAB®. This theory enables the efficient estimation of the sensitivities of an arbitrary response with respect to all parameters in the considered problem. These sensitivities are required in many applications including gradient-based optimization, surrogate-based modeling, statistical analysis, and yield analysis. Using the popular FDTD method, the book shows how wideband sensitivities can be efficiently estimated for different types of materials and structures, and includes plenty of well explained MATLAB® examples to help readers absorb the content more easily and to make the theory more understandable to the broadest possible audience. Topics covered include a review of FDTD and an introduction to adjoint sensitivity analysis; the adjoint variable method for frequency-independent constitutive parameters; sensitivity analysis for frequency-dependent objective functions; transient adjoint sensitivity analysis; adjoint sensitivity analysis with dispersive materials; adjoint sensitivity analysis of anisotropic structures; nonlinear adjoint sensitivity analysis; second-order adjoint sensitivities; and advanced topics.

Read more less

Completely modernized, greatly expanded, but retaining all the magic of the 2nd edition, Introduction to Airborne Radar has been brought into the 21st century without losing the hallmarks that made George Stimson's previous editions unique. Every chapter has been updated to reflect the constant transformations in radar technology and end-of-chapter exercises have also been added, improving its employment as a textbook. Over 100 radar and EW experts from around the world were involved in reviewing, writing, and editing this book, each one a longtime user of the previous editions. Each one of them was tasked with making sure this third edition lives up to its legacy of 'Introduction.' Stimson's is written specifically as an overview without going overboard on the math. Virtually anyone with a knowledge of high school algebra, trigonometry, and physics will be able to read and absorb the vast majority of the material. The first 17 chapters provide fundamentals that can be used by air, ground, and sea-based personnel. Every chapter provides extensive fundamental materials and practical applications, using visual system exemplars to aid explanations. The unique full color layout is enhanced with an immense number of illustrations, figures, tables, and color photographs. Key features: Modernized to reflect changes in the past 20 years including electronic scanning antennas and high resolution imaging. Completely covers the wide range of techniques employed in modern airborne and space borne radars. Fundamentals are applicable to ground and sea-based radar. Clear, understandable writing supplemented by extensive graphic illustration of concepts and offset boxes taking those concepts to the next level. Community reviewed by over 100 radar experts from organizations worldwide.

Read more less

The long awaited revision of the classic book Transmission Line Transformers, by Jerry Sevick, is now in its fifth edition and has been updated and reorganised by Raymond Mack to provide communication engineers with a clear technical presentation of both the theory and practical applications of the transmission of radio communication. Sevick's Transmission Line Transformers: Theory and Practice, 5th Edition reviews the underlying principles that promote a better understanding of transmission line transformers. Ideal for academics and practicing engineers, this edition is divided into two clear parts for easy reference. Part one is a review of the theory and new concepts, including a discussion on the magnetic properties that affect the core of a transmission line transformer. Part two essentially focuses on the 'practice' element of the book title. This section has been updated to reflect the significant changes in component suppliers over the 30 years since the first edition of the book. Highlights of this title include the coverage of substantial background theory, recent work on fractional ratio transformers and high power Balun designs, and provides updated sources for transformer materials to reflect mergers, sales, and business failures over the past 20 years. There is also expanded coverage of commercial sources of low impedance coaxial cable; expanded construction hints for purpose built rectangular parallel transmission lines; plus an updated test equipment chapter to reflect modern computer based experimenter grade test equipment sources. Ray has leveraged his experience with ferrite materials for switching power to explain the performance characteristics of the ferrite materials used for RF power transmission line transformers.

Read more less

Through courses taught internally at the Institute for Defense Analysis, Dr. Roger Sullivan has devised a book that brings readers fully up to speed on the most essential quantitative aspects of general radar in order to introduce study of the most exciting and relevant applications to radar imaging and advanced concepts: Synthetic Aperture Radar (4 chapters), Space-time Adaptive Processing, moving target indication (MTI), bistatic radar, low probability of intercept (LPI) radar, weather radar, and ground-penetrating radar. Whether you are a radar novice or experienced professional, this is an essential reference that features the theory and practical application of formulas you use in radar design every day. With this book, you are taken step-by-step through the development of modern airborne microwave radar, up to the cutting edge of emergent technologies including new results on theoretical 2D and 3D SAR point-spread functions (PSF) and current discussions concerning dechirp/deskew processing, layover in SAR images, vibrating targets, foliage penetration, image quality parameters, and more. Plus, for students of electrical engineering, physics, and radar, this book provides the best source of basic airborne radar understanding, as well as a broad introduction to the field of radar imaging.

Read more less

This is the only English language book on bistatic radar. It starts with James Casper's fine chapter in the first edition of Skolnik's Radar Handbook (1970), capturing previously unpublished work before 1970. It then summarizes and codifies subsequent bistatic radar research and development, especially as catalogued in the special December 1986 IEE journal. It defines and resolves many issues and controversies plaguing bistatic radar, including predicted performance, monostatic equivalence, bistatic radar cross section and resolution, bistatic Doppler, hitchhiking, SAR, ECM/ECCM, and, most importantly, the utility of bistatic radars. The text provides a history of bistatic systems that points out to potential designers, the applications that have worked and the dead-ends not worth pursuing. The text reviews the basic concepts and definitions, and explains the mathematical development of relationships, such as geometry, Ovals of Cassini, dynamic range, isorange and isodoppler contours, target doppler, and clutter doppler spread.

Read more less

EMI Troubleshooting Cookbook for Product Designers provides the 'recipe' for identifying why products fail to meet EMI/EMC regulatory standards. It also outlines techniques for tracking the noise source, and discovering the coupling mechanism, that is causing the undesired effects. This title gives examples of simple, easily implemented, and inexpensive troubleshooting tools that can be built by the engineer or technician, and uses methods that require only a basic understanding of electromagnetic theory and a minimal background in EMI/EMC. It will show the engineer and technician how to develop a process for troubleshooting using a straightforward approach in solving what may seem like a rather complicated problem at first. It will provide guidelines on how to approach an EMI failure, things to try, how to choose the right parts and balance cost, performance, and schedule. This book tells readers trying to solve EMI problems what to do and how to do it.

Read more less

This updated edition of the industry's classic text combines the theory, practice, and latest technology of spectrum and network measurements in electronic systems to offer a comprehensive and easy way to understand frequency domain measurements. Spectrum and Network Measurements, 2nd Edition has been completely updated to take into account the latest technology, particularly focusing on the shift from analog to digital in communication systems, plus an important new chapter on EMC measurements of radiated and conducted emissions has also been added. Using simplified block diagrams, this book offers a thorough coverage of critical concepts, such as decibels, Fourier analysis, noise effects, impedance matching, intermodulation distortion, reflection measurements, and S-Parameters. By picking up where the majority of electrical engineering programs stop, this title takes basic EE theory and translates it to the world of electronic measurements. This enables the reader to understand the basic theory of signals and systems, relate it to measured results, and apply it when creating new designs.

Read more less

This book presents a comprehensive set of radar and electronic warfare principles including many of the latest applications in a clear and consistent manner. Following on from the 3rd edition of this book (2004) Radar and Electronic Warfare Principles for the Non-specialist, 4th Edition, remains true to the traditional strength of the book, providing radar principles for the non-specialist, and also now introducing EW principles. All radar-related material has been reviewed, revised and enhanced as necessary. New to this edition: Significant revisions to; target signal-to-noise ratio, target detection theory, array antennas, radar measurements and tracking, and target signatures The addition of new EW-related material addressing electronic support (ES), electronic attack (EA), and electronic protection (EP) The advanced radar concepts chapter has been revised, including the addition of a section on modern multi-function, -mode, -mission radar systems. Most of the chapters are stand-alone allowing the reader to be selective and still benefit from the content. Exercises at the end of each chapter are provided to reinforce the concepts presented and illustrate their applications, making this book ideal for academic learning, training courses or self-study. Topics covered include: electromagnetic propagation, target detection, antennas, measurements and tracking, radar cross section and system applications. By reading this book, you should expect to be able to conduct a respectable, first-order radar system design or analysis and perform a first-order EW system design or analysis. This book will also provide you with the skills to critique the designs or analysis of others.

Read more less