Radar Imaging Of The Ocean Waves
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Radar Imaging Of The Ocean Waves
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Author : Mikhail B. Kanevsky
language : en
Publisher: Elsevier
Release Date : 2008-09-15
Radar Imaging Of The Ocean Waves written by Mikhail B. Kanevsky and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-09-15 with Science categories.
This book is dedicated to studying the ocean with radar tools, in particular, with space radars. Being intended mainly for the scientists preoccupied with the problem (as well as senior course students), it concentrates and generalizes the knowledge scattered over specialized journals. The significant part of the book contains the results obtained by the author. * Systematically collects and describes the approaches used by different laboratories and institutions * Deals with the physics of radar imagery and specifically with ocean surface imagery. * Useful for students and researchers specializing in the area of ocean remote sensing using airborne or space-borne radars, both SAR and RAR
Radar Imaging Of The Ocean Waves
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Author : Mikhail Borisovich Kanevsky
language : en
Publisher:
Release Date : 2014
Radar Imaging Of The Ocean Waves written by Mikhail Borisovich Kanevsky and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Doppler radar categories.
Problems Of Imaging Ocean Waves With Synthetic Aperture Radar
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Author : Robert A. Shuchman
language : en
Publisher:
Release Date : 1977
Problems Of Imaging Ocean Waves With Synthetic Aperture Radar written by Robert A. Shuchman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Ocean waves categories.
Progress is reported on three tasks designed to provide information to evaluate the operational use of SAR, so that ultimately, meaningful ocean shallow-water wave spectra and coastal wave height information can be supplied to the Navy in real-time. Under Task 1, a limited literature search was conducted to ascertain problems encountered in imaging sea states with SAR. The search indicated four fundamental problem areas where basic research is needed, before SAR can become a useful tool for the Navy. Under Task 2, solutions to SAR signal processing problems were explored and geometrical coorections of SAR wave imagery were considered.
Nonlinear Ocean Dynamics
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Author : Maged Marghany
language : en
Publisher: Elsevier
Release Date : 2021-02-09
Nonlinear Ocean Dynamics written by Maged Marghany and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-09 with Science categories.
Nonlinear Ocean Dynamics: Synthetic Aperture Radar delivers the critical tools needed to understand the latest technology surrounding the radar imaging of nonlinear waves, particularly microwave radar, as a main source to understand, analyze and apply concepts in the field of ocean dynamic surface. Filling the gap between modern physics quantum theory and applications of radar imaging of ocean dynamic surface, this reference is packed with technical details associated with the potentiality of synthetic aperture radar (SAR). The book also includes key methods needed to extract the value-added information necessary, such as wave spectra energy, current pattern velocity, internal waves, and more. This book also reveals novel speculation of a shallow coastal front: named as Quantized Marghany's Front. Rounding out with practical simulations of 4-D wave-current interaction patterns using using radar images, the book brings an effective new source of technology and applications for today’s coastal scientists and engineers. Solves specific problems surrounding the nonlinearity of ocean surface dynamics in synthetic aperture radar data Helps develop new algorithms for retrieving ocean wave spectra and ocean current movements from synthetic aperture radar Includes over 100 equations that illustrate how to follow examples in the book
On The Transfer Function Of A Shipborne Radar For Imaging Ocean Waves
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Author : Friedhart Zeimer
language : de
Publisher:
Release Date : 1987
On The Transfer Function Of A Shipborne Radar For Imaging Ocean Waves written by Friedhart Zeimer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Wave Coherence Measurements Using Synthetic Aperture Radar
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Author :
language : en
Publisher:
Release Date : 2000
Wave Coherence Measurements Using Synthetic Aperture Radar written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
A critical issue in the design of large floating structures such as those being considered in the Mobile Offshore Base (MOB) effort currently being pursued by the U.S. Navy is the nature of the ocean-wave field viewed on scales of 2 km or more. Of prime concern is the ability to assess the spatial coherence of the wave field or the probability of occurrence of long, unbroken wave crests for various environmental conditions. This report describes an effort to use satellite-based synthetic-aperture radar images to determine the crest-length statistics for ocean waves. The first portion of the study examined the feasibility of using SAR image data to determine the crest length distribution, which was shown the be directly related to the directional spread of the spectrum. A fully nonlinear SAR model was used in a simulation study to assess the impact of imaging effects on the resulting measures. For the cases examined, the errors in estimated directional spread were generally less than 20-30% and were conservative when the SAR look direction was within 200 of the propagation direction. The errors were shown to increase with increasing significant wave height, increasing directional spread, and increasing angle between the wave propagation direction and the SAR look direction. The second portion of the study developed a methodology to estimate the wave spectrum directly from the SAR-image spectrum via a variational inversion procedure. The methodology was successful, and the results from ERS SAR data indicate that errors in spectral parameters such as the mean wave length and directional spread are strongly dependent on the signal to noise ratio, as measured by the peak image spectral density. Errors become large when the peak spectral density falls below about 10 sq m for ERS SAR data. Above this level, estimates of wave length arid directional spread are accurate to within about 10-20%.
Radar Scattering From Modulated Wind Waves
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Author : G.J. Komen
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Radar Scattering From Modulated Wind Waves written by G.J. Komen 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 2012-12-06 with Science categories.
Ten years ago, de Loor and co-workers at TNO, The Netherlands, were the first to report bottom topography patterns in real aperture radar (RAR) images of the southern North Sea. At that time, this was a real puzzle. The skin depth of microwaves for sea water is only of the order of centimeters while the sea bottom is about 20 meters below the surface. Electromagnetic radiation therefore cannot probe the bottom directly. Similar phenomena were found in radar imagery from SEASAT and SIR-AlB synthetic aperture radars (SAR's) of Nantucket Shoals, the English Channel and many other coastal areas. Since then theory and ocean field experiments (Le., Phelps Bank, Georgia Straits, SARSEX, TOWARD, FASINEX, etc.) have advanced our understanding considerably. We now know that these surface signatures are the results of surface currents, perturbed by the bottom topography, which refract the propagation and modulate the energy of (short) surface waves so as to cause microwave backscatter power variations. Hence, any large scale ocean features containing nonuniform surface currents (i.e. internal waves, eddies, fronts, etc.) will cause similar manifestations in the radar imagery by means of current-wave-microwave interactions. Observations confirm this.
Advances In Sar Remote Sensing Of Oceans
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Author : Xiaofeng Li
language : en
Publisher: CRC Press
Release Date : 2018-10-12
Advances In Sar Remote Sensing Of Oceans written by Xiaofeng Li and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-12 with Technology & Engineering categories.
The oceans cover approximately 71% of Earth’s surface, 90% of the biosphere and contains 97% of Earth’s water. Since the first launch of SEASAT satellite in 1978, an increasing number of SAR satellites have or will become available, such as the European Space Agency’s ERS-1/-2, ENVISAT, and Sentinel-1 series; the Canadian RADARSAT-1/-2 and the upcoming RADARSAT Constellation Mission series satellites; the Italian COSMO-SkyMed satellites, the German TERRASAR-X and TANDEM-X, and the Chinese GAOFEN-3 SAR, among others. Recently, European Space Agency has launched a new generation of SAR satellites, Sentinel-1A in 2014 and Sentinel-1B in 2016. These SAR satellites provide researchers with free and open SAR images necessary to carry out their research on the global oceans. The scope of Advances in SAR Remote Sensing of Oceans is to demonstrate the types of information that can be obtained from SAR images of the oceans, and the cutting-edge methods needed for analysing SAR images. Written by leading experts in the field, and divided into four sections, the book presents the basic principles of radar backscattering from the ocean surface; introduces the recent progresses in SAR remote sensing of dynamic coastal environment and management; discusses the state-of-the-art methods to monitor parameters or phenomena related to the dynamic ocean environment; and deals specifically with new techniques and findings of marine atmospheric boundary layer observations. Advances in SAR Remote Sensing of Oceans is a very comprehensive and up-to-date reference intended for use by graduate students, researchers, practitioners, and R&D engineers working in the vibrant field of oceans, interested to understand how SAR remote sensing can support oceanography research and applications.
Seasat Views Oceans And Sea Ice With Synthetic Aperture Radar
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Author : Lee-Leung Fu
language : en
Publisher:
Release Date : 1982
Seasat Views Oceans And Sea Ice With Synthetic Aperture Radar written by Lee-Leung Fu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Artificial satellites in earth sciences categories.
Radar Imaging For Maritime Observation
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Author : Fabrizio Berizzi
language : en
Publisher: CRC Press
Release Date : 2018-01-24
Radar Imaging For Maritime Observation written by Fabrizio Berizzi and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-24 with Political Science categories.
Based on the experiences of the Department of Information Engineering of the University of Pisa and the Radar and Surveillance System (RaSS) national laboratory of the National Interuniversity Consortium of Telecommunication (CNIT), Radar Imaging for Maritime Observation presents the most recent results in radar imaging for maritime observation. The book explores both the areas of sea surface remote sensing and maritime surveillance providing key theoretical concepts of SAR and ISAR imaging and more advanced and ad-hoc techniques for applications in maritime scenarios. The book is organized in two sections. The first section discusses the fundamentals of standard SAR/ISAR processing and novel imaging techniques, such as Bistatic, Passive, and, 3D Interferometric ISAR. The second section focuses on the applications and results obtained by processing real data from maritime observations like SAR image processing for oil spill, detection in SAR images and fractal analysis. Useful to both beginners and experts in maritime observation, this book provides several examples of (mainly space-borne) radar imaging of maritime targets. Nevertheless, the same principles and techniques apply to the case of manned or unmanned carriers and to ground and air moving targets.