Aspect Diversity For Bistatic Synthetic Aperture Radar
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Aspect Diversity For Bistatic Synthetic Aperture Radar
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Author : Ellen E. Laubie
language : en
Publisher:
Release Date : 2017
Aspect Diversity For Bistatic Synthetic Aperture Radar written by Ellen E. Laubie and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Bistatic radar categories.
This dissertation presents a method to improve automatic target recognition by utilizing bistatic synthetic aperture radar (SAR) observations to augment a monostatic SAR observation of the same target with a single, stationary transmitter for improved automatic target recognition (ATR). We investigate the information gain of bistatic perspectives with respect to a monostatic perspective by calculating the correlation coefficient between the monostatic image of a target and the bistatic image of a target for increasing bistatic angles and find a significant information gain as the bistatic angle is increased. Following our information content analysis, we implement decision-level fusion of multiple aspects using majority voting and template matching. Results show improved classification for decision-level fusion. We also investigate image registration using bistatic observations to assess the feasibility of a full aspect-diverse bistatic SAR ATR system. Bistatic images are registered to a monostatic image of the same target. Results yield significant error--indicating that traditional registration methods are not sufficient for bistatic SAR systems. In addition to our empirical studies, we also develop an analytical expression that relates the probability of error for a two-class multiple-aspect template-matching classifier to the number of perspectives fused at the image level. This expression allows investigation of the effect of various parameters, such as cross-target correlation and noise variance, on classification performance. We verify our error expression empirically and demonstrate significant improvements in classification for aspect-diverse bistatic SAR ATR. Finally, we investigate bistatic perspectives with respect to bistatic angle, and the correlation between opposing targets. We find that the correlation between two targets fluctuates extensively with respect to bistatic angle for a single transmitter location. This makes it difficult to predict "good" perspectives, but simultaneously ensures a high probability that a good perspective will be selected randomly.
Algorithms For Synthetic Aperture Radar Imagery
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Author :
language : en
Publisher:
Release Date : 2007
Algorithms For Synthetic Aperture Radar Imagery written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Computer algorithms categories.
Multi Antenna Synthetic Aperture Radar
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Author : Wen-Qin Wang
language : en
Publisher: CRC Press
Release Date : 2017-07-12
Multi Antenna Synthetic Aperture Radar written by Wen-Qin Wang and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-12 with Technology & Engineering categories.
Synthetic aperture radar (SAR) is a well-known remote sensing technique, but conventional single-antenna SAR is inherently limited by the minimum antenna area constraint. Although there are still technical issues to overcome, multi-antenna SAR offers many benefits, from improved system gain to increased degrees-of-freedom and system flexibility. Multi-Antenna Synthetic Aperture Radar explores the potential and challenges of using multi-antenna SAR in microwave remote sensing applications. These applications include high-resolution imaging, wide-swath remote sensing, ground moving target indication, and 3-D imaging. The book pays particular attention to the signal processing aspects of various multi-antenna SAR from a top-level system perspective. Explore Recent Extensions of Synthetic Aperture Radar Systems The backbone of the book is a series of innovative microwave remote sensing approaches developed by the author. Centered around multi-antenna SAR imaging, these approaches address specific challenges and potential problems in future microwave remote sensing. Chapters examine single-input multiple-output (SIMO) multi-antenna SAR, including azimuth and elevation multi-antenna SAR, and multiple-input multiple-output (MIMO) SAR. The book details the corresponding system scheme, signal models, time/phase/spatial synchronization methods, and high-precision imaging algorithms. It also investigates their potential applications. Introductory Tutorials and Novel Approaches in Multi-Antenna SAR Imaging Rigorous and self-contained, this is a unique reference for researchers and industry professionals working with microwave remote sensing, SAR imaging, and radar signal processing. In addition to novel approaches, the book also presents tutorials that serve as an introduction to multi-antenna SAR imaging for those who are new to the field.
Nrl Review
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Author :
language : en
Publisher:
Release Date : 2016
Nrl Review written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Naval research categories.
Inverse Synthetic Aperture Radar Imaging With Matlab Algorithms
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Author : Caner Ozdemir
language : en
Publisher: John Wiley & Sons
Release Date : 2012-02-03
Inverse Synthetic Aperture Radar Imaging With Matlab Algorithms written by Caner Ozdemir and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-02-03 with Technology & Engineering categories.
This book provides a full representation of Inverse Synthetic Aperture Radar (ISAR) imagery, which is a popular and important radar signal processing tool. The book covers all possible aspects of ISAR imaging. The book offers a fair amount of signal processing techniques and radar basics before introducing the inverse problem of ISAR and the forward problem of Synthetic Aperture Radar (SAR). Important concepts of SAR such as resolution, pulse compression and image formation are given together with associated MATLAB codes. After providing the fundamentals for ISAR imaging, the book gives the detailed imaging procedures for ISAR imaging with associated MATLAB functions and codes. To enhance the image quality in ISAR imaging, several imaging tricks and fine-tuning procedures such as zero-padding and windowing are also presented. Finally, various real applications of ISAR imagery, like imaging the antenna-platform scattering, are given in a separate chapter. For all these algorithms, MATLAB codes and figures are included. The final chapter considers advanced concepts and trends in ISAR imaging.
Bistatic Radar
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Author : Mikhail Cherniakov
language : en
Publisher: John Wiley & Sons
Release Date : 2008-10-13
Bistatic Radar written by Mikhail Cherniakov and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-10-13 with Technology & Engineering categories.
The impact of bistatic radar technology on remote sensing is increasing as bistatic systems cross the theoretical threshold into practical embodiment. The wide spectrum of radar applications, including space exploration, defence, transport, aerospace, and meteorology, provides persistent impetus for this progress. This book is dedicated to the more advanced studies in bistatic radar which are currently the subject of intensive research activity and development. With contributions from the leading experts in the field of bistatic radar research, this book collates the latest developments in the field focusing particularly on bistatic synthetic aperture radar (BSAR) and passive bistatic radar systems (PBRS). Within these two areas the text: addresses the main BSAR topologies: spaceborne BSAR, airborne BSAR and space-surface BSAR; analyses the resurgent interest in, and practical applications of, PBRS; introduces passive BSAR technology; covers research of systems used in aircraft detection and tracking, and passive radar remote sensing of the ionosphere and the upper atmosphere. Bistatic Radar: Emerging Technology is an invaluable resource for practising engineers and researchers involved in the design and implementation of advanced bistatic radar systems in aerospace, communications, defence, transport and meteorology. Following on from Bistatic Radar: Principles and Practice it is also a comprehensive reference on the latest research for postgraduate students taking specialist courses in radar technology.
Target Scattering Mechanism In Polarimetric Synthetic Aperture Radar
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Author : Si-Wei Chen
language : en
Publisher: Springer
Release Date : 2018-04-21
Target Scattering Mechanism In Polarimetric Synthetic Aperture Radar written by Si-Wei Chen and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-21 with Technology & Engineering categories.
This book presents new and advanced concepts, theories and methodologies in polarimetric synthetic aperture radar (PolSAR) target scattering mechanism modeling and interpretation, which is dedicated to bridge the gap between the acquired data and practical applications. It proposes adaptive and generalized polarimetric target decompositions, to precisely interpret the target scattering mechanisms. Further, it develops a uniform polarimetric matrix rotation theory and a polarimetric coherence pattern visualization and interpretation tool to completely explore and characterize the deep information and target signatures in the rotation domain. Finally, it demonstrates land cover classification, target detection, natural disaster damage investigation and mapping applications which use the novel scattering mechanism investigation tools. The book is a valuable resource for senior undergraduate and postgraduate students, teachers, engineers and researchers in the field of microwave remote sensing, radar polarimetry, imaging radar, and environmental studies.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
Inverse Methods In Electromagnetic Imaging
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Author : Wolfgang-M. Boerner
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-21
Inverse Methods In Electromagnetic Imaging written by Wolfgang-M. Boerner and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-21 with Social Science categories.
In recent years, there has been an increased interest in the use of polarization effects for radar and electromagnetic imaging problems (References 1, 2, and 3). The problem of electro magnetic imaging can be divided into the following areas: (1) Propagation of the Stokes' vector from the transmitter to the target region through various atmospheric conditions (rain, dust, fog, clouds, turbulence, etc.). (2) Scattering of the Stokes' vector from the object. (3) Scattering of the Stokes' vector from the rough surface, terrain, and the volume scattering. (4) Propagation of the Stokes' vector from the target region to the receiver. (5) The characteristics of the receiver relating the Stokes' vector to the output. The propagation characteristics of the Stokes' vector through various media can be described by the equation of transfer. Even though the scalar equation of transfer has been studied extensively in the past, the vector equation of transfer has not received as much attention. In recent years, however, a need for further study of the vector radiative transfer theory has become increasingly evident and several important studies have been reported. This paper presents a general formulation of the vector theory of radiative transfer under general anisotropic scattering conditions. Some useful solutions are also presented 4 8 for several practical situations. - 2. GENERAL FORMULATION OF VECTOR RADIATIVE TRANSFER THEORY Let us consider the plane-parallel problem Shovlll in Figure 1.
International Aerospace Abstracts
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Author :
language : en
Publisher:
Release Date : 1998
International Aerospace Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Aeronautics categories.