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Author: Harold Mott
Publisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 328
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Book Description
Develops methods for treating polarization problems in antennas, radar, radio astronomy, and lasers. Develops appropriate descriptors for elliptically polarized waves and antennas and gives polarization characteristics for several useful antennas. An extensive presentation of polarization changes by reflection is given, including scattering matrices and reflections from an arbitrarily oriented plane. Partial polarization is discussed, as well as techniques for measuring antenna polarization.
Author: Harold Mott
Publisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 328
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Book Description
Develops methods for treating polarization problems in antennas, radar, radio astronomy, and lasers. Develops appropriate descriptors for elliptically polarized waves and antennas and gives polarization characteristics for several useful antennas. An extensive presentation of polarization changes by reflection is given, including scattering matrices and reflections from an arbitrarily oriented plane. Partial polarization is discussed, as well as techniques for measuring antenna polarization.
Author: Huanyao Dai
Publisher: Springer
ISBN: 9811087946
Category : Technology & Engineering
Languages : en
Pages : 331
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Book Description
This book presents novel research ideas and offers insights into radar system design, artificial intelligence and signal processing applications. Further, it proposes a new concept of antenna spatial polarization characteristics (SPC), suggesting that the antenna polarization is a function of the spatial direction and providing new ideas for radar signal processing (RSP) and anti-jamming. It also discusses the design of an advanced signal-processing algorithm, and proposes new polarimetric and anti-jamming methods using antenna inherent properties. The book helps readers discover the potential of radar information processing and improve its anti-interference and target identification ability. It is of interest to university researchers, radar engineers and graduate students in computer science and electronics who wish to learn the core principles, methods, algorithms, and applications of RSP.
Author: Harold Mott
Publisher: Wiley-Interscience
ISBN: 9780471575382
Category : Technology & Engineering
Languages : en
Pages : 544
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Book Description
Introduces antenna theory, covering all the topics necessary for antennas used in radar and communications. Important areas treated include antenna noise, matching of misaligned antennas and radiation of a quasimonochromatic wave by an antenna. Further discussions explore wave polarization and target detection. Appendices include the Mueller and Kennaugh Matrices.
Author: Nikolay Kondratyevich Yurkov
Publisher: Springer Nature
ISBN: 9813349646
Category : Technology & Engineering
Languages : en
Pages : 140
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Book Description
This book highlights the synthesis of polarization selection system in the background of passive noise formed by reflections from space-distributed targets. This synthesis is fulfilled as close as possible to its ideal configuration in terms of maximal signal-to-noise ratio for the matched load of radar station antenna system. It presents a new approach to radar system resolution enhancement based on the development of mathematical model for radiometric receivers with mono-pulse antenna systems, as well as creation of a new algorithm that allows increasing angular resolution during the object’s search and tracking due to special signal processing.
Author: Harold Mott
Publisher: John Wiley & Sons
ISBN: 0470079800
Category : Technology & Engineering
Languages : en
Pages : 327
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Book Description
Discover the principles and techniques of remote sensing with polarimetric radar This book presents the principles central to understanding polarized wave transmission, scattering, and reception in communication systems and polarimetric and non-polarimetric radar. Readers gain new insight into the methods for remotely gathering data about the earth's surface and atmosphere with polarimetric synthetic-aperture radar and polarimetric interferometry, including the changes that take place with seasons, floods, earthquakes, and other natural phenomena. In particular, with the book's focus on polarimetric radars, readers discover how to exploit the many special features of these systems, which provide the maximum amount of information that can be obtained remotely with radar. Introductory-level coverage of electromagnetic wave propagation, antennas, radar and synthetic aperture radar, probability and random processes, and radar interferometry serves as a foundation for advancing to more complex material. A more advanced mathematical and technical treatment enables readers to fully grasp polarized wave transmission, propagation, and reception in communication systems and polarimetric-radar remote sensing. Readers will discover much new material in this text, including: Distinguishing between coherently-measured and incoherently-measured target matrices for power, recognizing that the two matrix types are not equivalent in representing targets Removing unpolarized components from the scattered wave and deriving a target matrix for classification from the resulting coherently-scattered wave Selecting an antenna polarization to maximize the contrast between desired and undesired depolarizing targets Problems ranging in complexity from introductory to challenging are presented throughout the text. Engineers will find this an ideal reference to help them fully utilize the powerful capabilities of polarimetric radar. It will also help agronomists, geographers, meteorologists, and other scientists who use remotely obtained data about the earth to evaluate procedures and better interpret the data. The book can also be tailored to both undergraduate and graduate courses in remote sensing, and recommendations are given for text material suitable for such courses.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 72
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Book Description
The Naval Research Laboratory (NRL) is investigating polarization features of antennas to determine if they can be used for radar identification. This report presents the results of a test under this program whose main objective was to use existing polarization measuring hardware to examine the mainlobe and sidelobe antenna polarization characteristics of different navigation radars and to evaluate how this information can be used for radar identification. A theoretical model was generated to plot the polarization characteristics of slotted waveguide arrays, the type of arrays used in navigation radars. A comparison between theory and real-time measurements was made with encouraging results. This report shows that radars belonging to the same 'class' with the same antenna polarization, can be distinguishable when comparing their mainlobe and sidelobe antenna polarization characteristics. Antenna polarization, Radar identification, Navigation radars.
Author:
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110562804
Category : Science
Languages : en
Pages : 353
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Book Description
The book presents basic and advanced concepts of circularly polarized antennas, including design procedure and recent applications. Cross dipole antennas, microstrip antennas, helical antennas, quadrifilar helix antennas, frequency independent antennas, horn antennas, omnidirectional circularly polarized antennas and radial line arry antennas are discussed. With abundant examples, the book is an essential reference for researchers and engineers.
Author: Alan J. Fenn
Publisher: Artech House
ISBN: 1596932732
Category : Technology & Engineering
Languages : en
Pages : 410
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Book Description
Based on the author's extensive research at MIT Lincoln Laboratory, this authoritative resource offers an in-depth description of adaptive array design, emphasizing the RF characteristics, mutual coupling among elements, and field testing methods. It provides you with proven techniques for challenging projects involving radar, communication systems and antenna design. For the first time in any book, you find design guidance on specialized types of arrays, using monopole radiating elements, slotted cylinders and ultrawideband dipoles. Moreover, this unique book presents a focused near-field technique that quantifies the far-field performance of large aperture radar systems and communication systems. The book presents example prototype phased array antennas, including discussions on monopole phased arrays, finite and infinite array analyses, measurements for planar arrays of monopole elements. Further, you get a detailed explanation of focused near-field polarization characteristics of monopole arrays as related to adaptive array testing in the near field. From the fundamentals of adaptive antennas and degrees of freedom for multiple beam antennas and phased arrays… to a test bed monopole phased array and the planar near field testing technique… to arrays of horizontally polarized loop-fed slotted cylinder antennas and ultrawideband dipole arrays, this comprehensive book offers you invaluable, hands-on knowledge for your work in the field.
Author: A. G. Shupiatskii
Publisher:
ISBN:
Category : Clouds
Languages : en
Pages : 24
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Book Description
The presence of randomly oriented, nonspherical particles in the atmosphere results in the appearance of a depolarized component of the radar signal, that is, the echo signal. When there is sufficient radar sensitivity, this effect can be used to discriminate between the liquid phase (spherical droplets) and the crystalline phase in clouds. To realize certain theoretically observed possibilities, an apparatus was set up on the radar laboratory, which permitted the transmission of both linearly and circularly or elliptically polarized waves. Theoretical analysis and experimental measurements made with this equipment give reason to expect that polarization characteristics can be used to obtain valuable information on the structure and variation of the parameters of meteorological objects.
Author: Wolfgang M. Boerner
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 896
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Book Description
