Radar, Sonar, and Holography: An Introduction provides an introduction to the technology of radar and sonar. Because the new science of holography is affecting both these fields quite strongly, the book includes an explanation of the fundamental principles underlying this new art (including the subjects of wave coherence, interference, and diffraction) and of the hologram process itself. Finally, numerous examples are discussed which show how holography is providing new horizons to radar and sonar systems. The book thus also provides a simple approach to the new technology of holography. The discussions clarify the basic difference that exist between photography and holography, on the one hand, and between standard sonar and radar, on the other; and the hologram versions of these two technologies. The book should be useful as a supplementary reading assignment to early college students in science and engineering, and also to senior high students having a bent for science and engineering.

Image Processing in Bio-Medical Engineering.- Ultrasonic Holography: A Practical System.- New Dimensions for R&D Program Management.- Ultrasonic Tissue Visualization and Surgery in Brain.- A Project of Ultrasonic Tomography ("Sonoradiography").- Image Information Processing for Pulse Echo Scanning Methods.- Ultrasonic Imaging at Stanford Research Institute.- Optical Information Processing and Acousto-Optics.- Present Aspects of "Ultrasonotomography" for Medical Diagnostics.- New Forms of Ultrasonic and Radar Imaging.- Acoustic Microscopy.- Some Aspects of Optical Holography that Might be of In.

This book is intended for upperclass college students as an introduction to the growing field of coherent optics and to the increasing number of its applications, and also for those versed in other fields who wish to gain per spective and insight without detailed calculations. It is an outgrowth of the author's Science Study Series book Lasers and HolographY. * Besides being an updated and expanded version of that book, it includes discussions of numerous recent applications. It differs in its slightly higher analytical level and in the inclusion oflarge numbers of references, which enable the reader to obtain further information on subjects of interest to him. The level was selected to match the capabilities of students in their middle college years so as to permit them to make an early assessment of possible career interests in any of the many interdisciplinary fields now embracing the technologies of modern optics. It is hoped that the book can be used (as has occurred rather extensively with another of the author's Science Study Series books, Sound Waves and Light Wavest) as an auxiliary reading assignment for students in various disciplines. The author strongly believes that the promise of continued growth in this field, as evidenced by the extensive participation in technology develop ments by industry, both within the U. S. and abroad, identifies the subject as * Doubleday, 1969 (hard cover and paperback).

From electronic wire taps to baby monitors and long-distance video and listening devices, startling changes occur everyday in how we gather, interpret, and transmit information. An extraordinary range of powerful new technologies has come into existence to meet the requirements of this expanding field. Your search for a comprehensive resourc

Physical Acoustics: Principles and Methods, Volume X, is a five-chapter text that covers the principles and methods of generation of physical acoustics. The first chapter provides the essential results obtained concerning acoustic surface waves on curved surfaces and relates them to the corresponding plane surface waves. This chapter also presents a classification of surface and lateral waves on flat surfaces along with their properties. The second chapter describes a group of acoustic wave problems that are particularly suitable for study by means of Schlieren visualization. The third chapter deals with the production of ultrasonic waves by direct electromagnetic generation, while type II superconductors, which are useful for superconducting magnets with strong magnetic fields and with high current densities, are investigated in the fourth chapter. The fifth chapter discusses the principles of hologram and its application to very short length electromagnetic waves known as microwaves and to acoustic waves of various wavelengths.

Science Study Series No. 39: Lasers and Holography: An Introduction to Coherent Optics focuses on the processes, methodologies, and techniques involved in optics, including wave diffraction and patterns, zone plates, holograms, and diffraction. The publication first ponders on holograms as wave patterns, coherence, and lasers. Topics include reflectors and resonators, natural line width, semiconductor lasers, reflectors and spatial coherence, energy conservation with reflectors, frequency coherence and stability, coherent waves from small sources, photographic grating, and properties of waves. The book then tackles wave diffraction, as well as diffraction by two and multiple slits, near field, multiple slit gratings and photographic gratings, refraction by prisms, dependence of diffraction on wavelength, and disks and zone plates. The manuscript reviews the properties of holograms and zone plates. Discussions focus on holograms and coherent radar, single wavelength nature of holograms, image inversion, reconstruction with a small portion of a hologram, pseudoscopy in the real image of a hologram, zone plates as negative lenses, offset zone plates, and zone plates with areas interchanged. The text is a dependable reference for researchers interested in coherent optics.

A guide to the applications of holographic techniques for microwave and millimeter wave imaging Real-Time Three-Dimensional Imaging of Dielectric Bodies Using Microwave/Millimeter Wave Holography offers an authoritative guide to the field of microwave holography for the specific application of imaging dielectric bodies. The authors—noted experts on the topic—review the early works in the area of optical and microwave holographic imaging and explore recent advances of the microwave and millimeter wave imaging techniques. These techniques are based on the measurement of both magnitude and phase over an aperture and then implementing digital image reconstruction. The book presents developments in the microwave holographic techniques for near-field imaging applications such as biomedical imaging and non-destructive testing of materials. The authors also examine novel holographic techniques to gain super-resolution or quantitative images. The book also includes a discussion of the capabilities and limitations of holographic reconstruction techniques and provides recommendations for overcoming many of the limitations. This important book: • Describes the evolution of wide-band microwave holography techniques from synthetic aperture radar principles • Explores two major approaches to near-field microwave holography: Using the incident field and Green's function information and using point-spread function of the imaging system • Introduces the "diffraction limit" in the resolution for techniques that are based on the Born approximation, and provides techniques to overcome this limit Written for students and research associates in microwave and millimeter wave engineering, Real-Time Three-Dimensional Imaging of Dielectric Bodies Using Microwave/Millimeter Wave Holography reviews microwave and millimeter-wave imaging techniques based on the holographic principles and provides information on the most current developments.