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Advances in Airborne Lidar Systems and Data Processing

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ISBN: 9783038426738 9783038426745 Year: Pages: 493 DOI: 10.3390/books978-3-03842-674-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Geography
Added to DOAB on : 2019-08-28 11:41:30
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This edition is a reprint of the Special Issue published online in the open access journal Remote Sensing (ISSN 2072-4292) from 2016–2017 (available at: http://www.mdpi.com/journal/remotesensing/special issues/rsALS), complemented by selected articles published in Remote Sensing

Advances in Multi-Sensor Information Fusion: Theory and Applications 2017

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ISBN: 9783038429333 9783038429340 Year: Pages: VIII, 560 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Electrical and Nuclear Engineering
Added to DOAB on : 2018-06-26 15:21:03
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The information fusion technique can integrate a large amount of data and knowledge representing the same real-world object and obtain a consistent, accurate and useful representation of that object. The data may be independent or redundant, and can be obtained by different sensors at the same time or at different times. A suitable combination of investigative methods can substantially increase the profit of information in comparison with that from a single sensor.Multi-sensor information fusion has been a key issue in sensor research since the 1970s and it has been applied in many fields, such as geospatial information systems, business intelligence, oceanography, discovery science, intelligent transport systems, wireless sensor networks, etc. Recently, thanks to the vast development in sensor and computer memory technologies, more and more sensors are being used in practical systems and a large amount of measurement data are recorded and restored, which may actually be the "time series big data". For example, sensors in machines and process control industries can generate a lot of data, which have real, actionable business value. The fusion of these data can greatly improve productivity through digitization.The goal of this Special Issue is to report on innovative ideas and solutions for the methods of multi-sensor information fusion in the emerging applications era, focusing on development, adoption and applications.

Sea Surface Salinity Remote Sensing

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ISBN: 9783039210763 9783039210770 Year: Pages: 296 DOI: 10.3390/books978-3-03921-077-0 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General)
Added to DOAB on : 2019-12-09 11:49:15
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This Special Issue gathers papers reporting research on various aspects of remote sensing of Sea Surface Salinity (SSS) and the use of satellite SSS in oceanography. It includes contributions presenting improvements in empirical or theoretical radiative transfer models; mitigation techniques of external interference such as RFI and land contamination; comparisons and validation of remote sensing products with in situ observations; retrieval techniques for improved coastal SSS monitoring, high latitude SSS and the assessment of ocean interactions with the cryosphere; and data fusion techniques combining SSS with sea surface temperature (SST). New instrument technology for the future of SSS remote sensing is also presented.

Keywords

sea surface salinity --- remote sensing --- mediterranean sea --- smos --- alboran sea --- data processing --- quality assessment --- MICAP --- forward model --- combined active/passive SSS retrieval algorithm --- different instrument configurations --- retrieval errors --- SMAP --- sea surface salinity --- Arctic Ocean --- sea ice --- river discharge --- Arctic Gateways --- sea surface salinity --- remote sensing --- aquarius --- SMAP --- retrieval algorithm --- calibration --- validation --- satellite salinity --- Gulf of Maine --- bias characteristics --- Scotian Shelf --- Aquarius satellite --- sea surface salinity --- Aquarius Validation Data System (AVDS) --- ocean salinity --- microwave remote sensing --- remote sensing --- sea surface salinity --- SMAP --- SMOS --- Gulf of Mexico --- validation --- coastal --- salinity --- upwelling --- sea surface salinity --- remote sensing --- Arctic ocean --- SMOS --- Arctic rivers --- data processing --- quality assessment --- Aquarius --- Argo --- Sea Surface Salinity --- Water Cycle Observation Mission (WCOM) --- interferometric microwave imager (IMI) --- one-dimensional (1D) aperture synthesis radiometer --- sea surface salinity (SSS) --- brightness temperature (TB) --- sea surface salinity --- microwave radiometry --- remote sensing --- calibration --- retrieval algorithm --- validation --- Aquarius --- SMOS --- SMAP --- sea surface temperature --- sea surface salinity --- SMOS --- retroflections --- surface velocity --- water transport --- salt transport --- n/a --- sea surface salinity --- ocean surface roughness --- microwave radiometry --- remote sensing --- forward model --- retrieval algorithm

Recent Advances in GPR Imaging

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ISBN: 9783039218103 9783039218110 Year: Pages: 216 DOI: 10.3390/books978-3-03921-811-0 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General) --- Geophysics and Geomagnetism
Added to DOAB on : 2019-12-09 11:49:16
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The Special Issue (SI) “Recent Advances in GPR Imaging” offers an up-to-date overview of state-of-the-art research activities dealing with the development of Ground Penetrating Radar (GPR) technology and its recent advances in imaging in the different fields of application. In fact, the advances experimented with over the last few decades with regard to the appearance of new GPR systems and the need to manage large amounts of data suggest an increasing interest in the development of new signal processing algorithms and modeling, as well as in the use of three-dimensional (3D) imaging techniques.

Cognitive Aspects of Human-Computer Interaction for GIS

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ISBN: 9783039215683 9783039215690 Year: Pages: 196 DOI: 10.3390/books978-3-03921-569-0 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Computer Science
Added to DOAB on : 2019-12-09 16:10:12
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The book is dealing with recent progress in human–computer interaction (HCI) related to geographic information science (GIS). The Editorial starts with an overview about the evolution of the Internet and first HCI concepts and stimulates recent HCI developments using 3D and 4D apps, running on all mobile devices with OS Android, iOS, Linus, and Windows. Eight research articles present the state-of-the-art in HCI–GIS-related issues, starting with gender and age differences in using indoor maps via the estimation of building heights from space to an efficient visualization method for polygonal data with dynamic simplification. The review article deals with progress and challenges on entity alignment of geographic knowledge bases.

Satellite Altimetry for Earth Sciences

Authors: --- --- ---
ISBN: 9783038976806 9783038976813 Year: Pages: 484 DOI: 10.3390/books978-3-03897-681-3 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General) --- Geophysics and Geomagnetism
Added to DOAB on : 2019-08-28 11:21:27
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Satellite altimetry is a radar technique for measuring the topography of the Earth’s surface. It was initially designed for measuring the ocean’s topography, with reference to an ellipsoid, and for the determination of the marine geoid. Satellite altimetry has provided extremely valuable information on ocean science (e.g., circulation surface geostrophic currents, eddy structures, wave heights, and the propagation of oceanic Kelvin and Rossby waves). With more than 25 years of observations, it is also becoming vital to climate research, providing accurate measurements of sea level variations from regional to global scales. Altimetry has also demonstrated a strong potential for geophysical, cryospheric, and hydrological research and is now commonly used for the monitoring of Arctic and Antarctic ice sheet topography and of terrestrial surface water levels. This book aims to present reviews and recent advances of general interest in the use of radar altimetry in Earth sciences. Manuscripts are related to any aspect of radar altimetry technique or geophysical applications. We also encourage manuscripts resulting from the application of new altimetric technology (SAR, SARin, and Ka band) and improvements expected from missions to be launched in the near future (i.e., SWOT).

Keywords

satellite altimetry --- Envisat --- SARAL --- unsupervised classification --- K-medoids --- Greenland Sea --- Fram Strait --- upper layer thickness --- satellite altimeter --- two-layer ocean model --- South China Sea --- coastal altimetry --- sea surface height --- Jason-2 --- waveform retracking --- satellite altimetry --- inland water --- CryosSat-2 SAR --- Mekong Basin --- water level time series --- classification --- stack data --- altimetry --- Ka-band --- data processing --- calibration --- validation --- altimetry --- SAR --- calibration --- validation --- sea surface height --- coastal altimetry --- validation --- tide gauge --- altimetry --- Ka-band --- oceanography --- hydrology --- ice --- geodesy --- Jason-2 --- Hong Kong coast --- retracking --- X-TRACK --- ALES --- PISTACH --- radar altimetry --- coastal altimetry --- sea surface height --- topography of the intertidal zone --- ERS-2 --- ENVISAT --- SARAL --- CryoSat-2 --- altimetry --- water level --- discharge --- Sentinel-3 --- satellite altimetry --- microwave radiometer --- wet tropospheric correction --- wet path delay --- sensor calibration --- HY-2A --- waveform retracking --- range precision --- marine gravity --- radar altimetry --- waveform --- dielectric permittivity --- soil moisture --- satellite altimetry --- SWOT --- western Mediterranean Sea --- fine scale --- SWOT simulator --- ROMS model --- filtering --- storm surge --- satellite altimetry --- calibration --- numerical modelling --- FVCOM --- ocean tides --- coastal altimetry --- ALES retracker --- ocean geostrophy --- water volume transport --- satellite geodesy --- space gravity --- altimetry --- Argo --- Southern Ocean --- ACC --- lake level --- lake volume --- evaporation --- streamflow --- Gravity Recovery and Climate Experiment (GRACE) --- altimetry --- Landsat --- Aral Sea --- altimetry --- water levels --- validation --- Inner Niger Delta --- altimetry --- orbit decay --- drifting orbit --- geodetic orbit --- leads --- satellite altimetry --- CryoSat-2 --- classification --- peakiness --- polar ocean

Smart Sensors for Structural Health Monitoring

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ISBN: 9783039217588 9783039217595 Year: Pages: 342 DOI: 10.3390/books978-3-03921-759-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-12-09 11:49:16
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Smart sensors are technologies designed to facilitate the monitoring operations. For instance, power consumption can be minimized through on-board processing and smart interrogation algorithms, and state detection enhanced through collaboration between sensor nodes. Applied to structural health monitoring, smart sensors are key enablers of sparse and dense sensor networks capable of monitoring full-scale structures and components. They are also critical in empowering operators with decision making capabilities. The objective of this Special Issue is to generate discussions on the latest advances in research on smart sensing technologies for structural health monitoring applications, with a focus on decision-enabling systems. This Special Issue covers a wide range of related topics such as innovative sensors and sensing technologies for crack, displacement, and sudden event monitoring, sensor optimization, and novel sensor data processing algorithms for damage and defect detection, operational modal analysis, and system identification of a wide variety of structures (bridges, transmission line towers, high-speed trains, masonry light houses, etc.).

Keywords

optical crack growth sensor --- digital sampling moiré --- 2D crack growth --- calibration --- concrete crack --- feature extraction --- mapping construction --- fuzzy classification --- rotary ultrasonic array --- bending stiffness --- damage identification --- environmental noise --- bridge --- test vehicle --- structural impact monitoring --- sensors distribution optimization --- NSGA-II --- energy analysis of wavelet band --- principal component analysis --- transmission tower --- settlement --- wind force --- acceleration --- modal frequencies --- sudden event monitoring --- wireless smart sensors --- demand-based nodes --- event-triggered sensing --- data fusion --- patch antenna --- sensor --- structural health monitoring --- crack identification --- resonant frequency --- damage identification --- sensor optimization --- Virtual Distortion Method (VDM) --- Particle Swarm Optimization (PSO) algorithm --- sensitivity --- structural health monitoring --- piezoelectric wafer active sensors --- active sensing --- passive sensing --- damage detection --- acoustic emission --- uniaxial stress measurement --- structural steel members --- amplitude spectrum --- phase spectrum --- shear-wave birefringence --- acoustoelastic effect --- damage detection --- smartphones --- steel frame --- shaking table tests --- wavelet packet decomposition --- low-velocity impacts --- strain wave --- impactor stiffness --- data processing --- feature selection --- impact identification --- crack --- strain --- distributed dense sensor network --- structural health monitoring --- fibre bundle --- reflective optical sensor --- tip clearance --- turbine --- aero engine --- principal component analysis --- space window --- time window --- damage detection --- length effect --- stress detection --- electromagnetic oscillation --- steel strand --- concrete structures --- SHM --- stretching method --- model updating --- displacement sensor --- helical antenna --- resonant frequency --- perturbation theory --- normal mode --- wheel minor defect --- high-speed train --- online wayside detection --- Bayesian blind source separation --- FBG sensor array

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