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Advances in SAR: Sensors, Methodologies, and Applications

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ISBN: 9783038971825 9783038971832 Year: Pages: 530 DOI: 10.3390/books978-3-03897-183-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Sciences
Added to DOAB on : 2018-10-22 09:39:20
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The key importance of radar remote sensing for civil applications has been recognized for decades, and enormous scientific and technical developments have been carried out to further improve SAR sensors and SAR data processing. In recent years, SAR satellite constellations, consisting of two or more satellites, are becoming the “new normal” in SAR remote sensing. The present availability of SAR sensor constellations, such as Cosmo SkyMed, TerraSAR-X/TanDEM-X, and the new Copernicus sensors Sentinel-1A and 1B, supply a continuous stream of imagery with a unique short revisit cycle of only six days. Together with many more operational and planned SAR satellite systems, such as Geo-Fen 3 or NASA ISRO SAR (NISAR), this unprecedented amount of high-quality SAR data is suitable for a variety of applications, provided proper data processing methodology are applied. In "Advances in SAR: Sensors, Methodologies, and Applications" advancements in the field of hardware, software, and applications are presented, covering a wide range of topics.

Polarimetric SAR Techniques and Applications

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ISBN: 9783038426165 9783038426172 Year: Pages: VI, 168 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Sciences
Added to DOAB on : 2017-12-22 10:57:24
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Polarimetry allows sensitivity to the structural and geometric properties of the scene, making it possible a more accurate identification and classification than non-polarimetric systems. Then, polarimetry makes possible new applications, especially in quantitative extraction of bio and geophysical variables. Also, the combination of polarimetry and interferometry allows also to explore the vertical structure of semi-transparent media, like crops and forests. SAR polarimetry is an active field of research in Earth observation. Besides the development of applications, researchers have also focused in theory or physical modelling to make SAR polarimetry an operational technique. This book presents the state of the art in SAR polarimetry, from theory and physical modelling to final applications, but also the current and futures challenges. This book puts also the emphasis on studies for the exploitation of data provided by the new polarimetric space borne SAR sensors, which include additional frequency bands, interferometric capability, enlarged spatial coverage, high spatial resolution and/or shorter revisit times.

Urban Deformation Monitoring using Persistent Scatterer Interferometry and SAR tomography

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ISBN: 9783039211265 9783039211272 Year: Pages: 308 DOI: 10.3390/books978-3-03921-127-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-06-26 08:44:06
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This book focuses on remote sensing for urban deformation monitoring. In particular, it highlights how deformation monitoring in urban areas can be carried out using Persistent Scatterer Interferometry (PSI) and Synthetic Aperture Radar (SAR) Tomography (TomoSAR). Several contributions show the capabilities of Interferometric SAR (InSAR) and PSI techniques for urban deformation monitoring. Some of them show the advantages of TomoSAR in un-mixing multiple scatterers for urban mapping and monitoring. This book is dedicated to the technical and scientific community interested in urban applications. It is useful for choosing the appropriate technique and gaining an assessment of the expected performance. The book will also be useful to researchers, as it provides information on the state-of-the-art and new trends in this field

Keywords

SBAS-InSAR --- surface subsidence --- Sentinel-1A --- Wuhan --- engineering construction --- carbonate karstification --- water level changes --- reclamation settlements --- Lingang New City --- time series InSAR analysis --- terraSAR-X --- ENVISAT ASAR --- ALOS PALSAR --- time series analysis --- InSAR --- PS --- landslide --- subsidence --- land reclamation --- urbanization --- risk --- Istanbul --- Turkey --- Persistent Scatterer Interferometry (PSI) --- Sentinel-1 --- uplift --- expansive soils --- dewatering --- London --- synthetic aperture radar (SAR) --- SAR tomography --- deformation monitoring --- persistent scatterer interferometry (PSI) --- urban deformation monitoring --- radar interferometry --- displacement mapping --- spaceborne SAR --- differential interferometry --- differential tomography --- ERS-1/-2 --- PALSAR --- PALSAR-2 --- InSAR --- land subsidence --- reclaimed land --- Urayasu City --- SAR interferometry --- displacement monitoring --- Sentinel-1 --- permanent scatterers --- thermal dilation --- health monitoring --- SAR --- Sentinel-1 --- differential SAR interferometry --- atmospheric component --- modelling --- deformation time series --- validation --- multi-look SAR tomography --- multiple PS detection --- Capon estimation --- Generalized Likelihood Ratio Test --- synthetic aperture radar --- persistent scatterers --- differential interferometry --- tomography --- radar detection --- generalized likelihood ratio test --- sparse signals --- pursuit monostatic --- PS-InSAR --- urban monitoring --- skyscrapers --- urban subsidence --- Copernicus Sentinel-1 --- Persistent Scatterer Interferometry --- SNAP-StaMPS --- Rome --- synthetic aperture radar --- tomography --- polarimetry --- radar detection --- generalized likelihood ratio test --- sparse signals --- geological and geomorphological mapping --- Late-Quaternary deposits --- differential compaction --- multi-temporal DInSAR --- Venetian-Friulian Plain --- subsidence monitoring --- persistent scatterer interferometry --- asymmetric subsidence --- groundwater level variation --- Sepulveda Transit Corridor --- Los Angeles --- synthetic aperture radar --- persistent scatterers --- tomography --- differential interferometry --- polarimetry --- radar detection --- urban areas --- deformation

Sea Surface Roughness Observed by High Resolution Radar

Authors: --- --- ---
ISBN: 9783039217465 9783039217472 Year: Pages: 202 DOI: 10.3390/books978-3-03921-747-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Oceanography
Added to DOAB on : 2019-12-09 11:49:16
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Changes in sea surface roughness are usually associated with a change in the sea surface wind field. This interaction has been exploited to measure sea surface wind speed by scatterometry. A number of features on the sea surface associated with changes in roughness can be observed by synthetic aperture radar (SAR) because of the change in Bragg backscatter of the radar signal by damping of the resonant ocean capillary waves. With various radar frequencies, resolutions, and modes of polarization, sea surface features have been analyzed in numerous campaigns, bringing various datasets together, thus allowing for new insights into small-scale processes at a larger areal coverage. This Special Issue aims at investigating sea surface features detected by high spatial resolution radar systems, such as SAR.

Spectral Line Shapes in Astrophysics and Related Topics

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ISBN: 9783039281688 9783039281695 Year: Pages: 268 DOI: 10.3390/books978-3-03928-169-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General) --- Astronomy (General)
Added to DOAB on : 2020-04-07 23:07:08
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Spectral lines, widths, and shapes are powerful tools for emitting/absorbing gas diagnostics in different astrophysical objects (from the solar system to the most distant objects in the universe—quasars). On the other hand, experimental and theoretical investigations of laboratory plasma have been applied in spectroscopic astrophysical research, especially in research on atomic data needed for line shape calculations. Data on spectral lines and their profiles are also important for diagnostics, analysis, and the modelling of fusion plasma, laser-produced plasma, laser design and development, and various plasmas in industry and technology, like light sources based on plasmas or the welding and piercing of metals by laser-produced plasma. The papers from this book can be divided into four groups: 1. stark broadening data for astrophysical and laboratory plasma investigations; 2. applications of spectral lines for astrophysical and laboratory plasma research; 3. spectral line phenomena in extragalactic objects, and 4. laboratory astrophysics results for spectra investigation. The reviews and research papers, representing new research on the topics presented in this book, are of interest for specialists and PhD students. We hope that the present book will be useful and interesting for scientists interested in the investigation of spectral line shapes and will contribute to the education of young researchers and PhD students.

Keywords

stark broadening --- atomic data --- subdwarfs B stars --- Ar II --- stark broadening --- atomic data --- atomic processes --- line profiles --- Ar VII --- stark broadening --- line profiles --- atomic data --- Na IV --- atomic/molecular data --- radiative and collisional processes --- stars --- stark broadening --- impact approximation --- numerical simulation --- ionization processes --- emission line formation --- atomic spectroscopy --- supermassive black holes --- emission line profiles --- quasars --- line shape --- wave collapse --- electric field solitons --- plasma turbulence --- line shapes --- stark broadening --- neutral broadening --- corona discharge --- line shapes --- Stark broadening --- Zeeman effect --- tokamaks --- white dwarfs --- active galaxies --- BL Lacertae objects --- AO 0235+164 --- photometry --- polarimetry --- plasma spectroscopy --- microwave discharges --- gas temperature --- stark broadening parameters --- atomic emission spectroscopy --- laboratory plasma --- spectra --- line profiles --- astrophysical plasmas --- inner plasma electrostatic screening --- different charged ions --- stars --- galaxies: active --- galaxies: nuclei --- line: profiles --- quasars: emission lines --- catalogs --- surveys --- line shapes --- Stark broadening --- Zeeman effect --- white dwarfs --- QSO samples --- QSO selection --- medium-band photometry --- electron scattering --- cross sections --- Rosetta mission --- atomic and molecular databases --- Stark broadening --- line profiles --- atomic data --- spectroscopy --- alkali atoms --- astrophysics --- atomic processes --- molecular processes --- radiative transfer --- absorption quasi-molecular bands --- sun:atmosphere --- sun:photosphere --- stars:atmospheres --- white dwarfs --- atomic processes --- radiative transfer --- Sun: atmosphere --- Sun: photosphere --- stars: atmospheres --- white dwarfs --- Stark effect --- electron broadening --- Lienard-Wiechert --- retarded interaction --- relativistic collision operator --- Stark broadening --- line profiles --- atomic data --- plasmas --- Maxwell --- Juttner-Maxwell --- relativistic --- Doppler effect --- asymmetry --- Stark broadening --- Ar VII line profiles --- stars --- white dwarfs --- atomic data --- scattering

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