Urban Deformation Monitoring Using Persistent Scatterer Interferometry And Sar Tomography
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Urban Deformation Monitoring Using Persistent Scatterer Interferometry And Sar Tomography
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Author : Michele Crosetto
language : en
Publisher: MDPI
Release Date : 2019-06-24
Urban Deformation Monitoring Using Persistent Scatterer Interferometry And Sar Tomography written by Michele Crosetto and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-24 with Technology & Engineering categories.
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
Urban Deformation Monitoring Using Persistent Scatterer Interferometry And Sar Tomography
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Author : Oriol Monserrat
language : en
Publisher:
Release Date : 2019
Urban Deformation Monitoring Using Persistent Scatterer Interferometry And Sar Tomography written by Oriol Monserrat and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Electronic books categories.
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.
Tomographic Sar Reconstruction Of A 4d City Using Terrasar X Data
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Author : Clemence Chee
language : en
Publisher: GRIN Verlag
Release Date : 2013-02-01
Tomographic Sar Reconstruction Of A 4d City Using Terrasar X Data written by Clemence Chee and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-02-01 with Technology & Engineering categories.
Bachelor Thesis from the year 2012 in the subject Engineering - Aerospace Technology, grade: 1,3, Technical University of Munich (Deutsches Zentrum für Luft- und Raumfahrt), course: Photogrammetrie und Fernerkundung, language: English, abstract: Driven by military and civilian applications, the demand of very high resolution mapping and accurate monitoring has increased rapidly over the recent years. Nowadays, it is possible to create 4D models involving time variations using multiple synthetic aperture radar (SAR) images, combined with interferometric methods. SAR has evolved to satisfy a variety of applications for civilian and military users, for example by supporting catastrophe management, detection of geological changes, monitoring large construction sites or mines. With the help of SAR data obtained from the TerraSAR-X satellite, infrastructural monitoring is made possible from a distance. The benefit of this is that potential collapse within mines or tunnels could be prevented. Concrete degradation that could lead to building collapse, endangering people’s lives can also be identified before any catastrophe has the chance to occur. Currently, Tomographic SAR (TomoSAR) is the most advanced and competent interferometric SAR (InSAR) method in the area of urban monitoring. TomoSAR makes monitoring in 4D possible by creating the 3D position with the motion parameters. This thesis applies a new TomoSAR technique and method, developed by ZHU and her colleagues, 2012 [1], on a very high resolution (VHR) spotlight data stack in the area of Berlin. The images were taken by the TerraSAR-X satellite (Germany) over a timeframe of 3 years. The result is a 3D point cloud of the observed area, with the velocity of linear motion and the amplitude of periodic motion. The result of the work that forms the basis for this thesis, is the realization of high deformation and motion in Berlin’s infrastructure, especially around Berlin’s main station, on bridges (” Überflieger Brücke”) and railways - often up to 10mm.
Sar Tomography As An Add On To Persistent Scatterer Interferometry For Improved Deformation Coverage
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Author : Muhammad Adnan Siddique
language : en
Publisher:
Release Date : 2018
Sar Tomography As An Add On To Persistent Scatterer Interferometry For Improved Deformation Coverage written by Muhammad Adnan Siddique and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Multi Sensor Synergy For Persistent Scatterer Interferometry Based Ground Subsidence Monitoring
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Author : Nesrin Salepci
language : en
Publisher:
Release Date : 2015
Multi Sensor Synergy For Persistent Scatterer Interferometry Based Ground Subsidence Monitoring written by Nesrin Salepci and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Ground subsidence is a common phenomenon which causes disturbances and damages on the Earth's surface. Especially in urban areas, it poses risk to life and property. Establishing solutions for damage prevention requires knowledge of subsidence behavior over time and space, which entails the collection of geospatial information. The present work investigates the ground surface dynamics over a field of deep mining in Sondershausen, Germany based on multi-temporal Synthetic Aperture Radar (SAR) images. Deformation patterns are extracted by means of Persistent Scatterer Interferometry (PSI), a technique that exploits the spatio-temporal characteristics of interferometric signatures from persistent scatterers. Since the impact of subsidence on surface structures varies spatially, high-risk areas can only be identified when the subsidence profile is known. To model the geometry of the subsidence bowl, the present study extends the extracted point information to a surface of estimations by interpolation. Furthermore, by the synergistic usage of PS estimations from different satellite sensors, this research addresses the problem of undersampling in critical areas, which is a common limitation of the PSI approach. The methodology developed here estimates missing information, i.e. refines the initial model, by deformation map of a different sensor covering a different time interval. In order to extend the period of monitoring as well as to improve the spatial and temporal sampling, the ground subsidence in Sondershausen is monitored with a multi-sensor SAR dataset. The C- and L-band acquisitions of the sensors ERS-1/2 (1995-2005), Envisat-ASAR (2004-2010) and ALOS-PALSAR (2007-2010) are used to derive 15 years of subsidence information at the location of persistent scatterers. From a temporal viewpoint, the obtained deformation maps indicate a non-linearly decreasing trend of ground subsidence, which is consistent with the backfilling history of the mine. From a spatial viewpoint, the results suggest one major subsidence trough located in the urban area of Sondershausen and a minor one found in the nearby village of Großfurra. The PSI deformation maps and models are validated in reference to the available leveling measurements covering the site in Sondershausen. In general, the validation results suggest a good agreement between the PSI and surveying models with the normalized root-mean-square error (RMSE) lower than 0.11. However, some significant deviations of ERS estimations are also found for a critical region. In this area the absence of persistent scatterers contributes largely to the observed differences. Consequently, the spatial refinement by synergy is applied to this region. The integration of points from ASAR or PALSAR deformation maps result in an improvement in the modeled geometry of the subsidence trough. With this improvement the RMSE calculated for the ERS model is decreased from 0.061 to 0.054. The application demonstrates the synergistic potential of multi-sensor PSI analysis to improve the interpretation of ground subsidence characteristics and, thus, to increase the confidence of risk assessment.
A New Approach For Long Term Monitoring Of Deformations By Differential Sar Interferometry
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Author : Stefania Usai
language : en
Publisher: Delft University Press
Release Date : 2001
A New Approach For Long Term Monitoring Of Deformations By Differential Sar Interferometry written by Stefania Usai and has been published by Delft University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Science categories.
Satellite Sar Interferometry For Earth S Crust Deformation Monitoring And Geological Phenomena Analysis
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Author : Giuseppe Solaro
language : en
Publisher:
Release Date : 2016
Satellite Sar Interferometry For Earth S Crust Deformation Monitoring And Geological Phenomena Analysis written by Giuseppe Solaro and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Technology categories.
Synthetic aperture radar interferometry (InSAR) and the related processing techniques provide a unique tool for the quantitative measurement of the Earth's surface deformation associated with certain geophysical processes (such as volcanic eruptions, landslides and earthquakes), thus making possible long-term monitoring of surface deformation and analysis of relevant geodynamic phenomena. This chapter provides an application-oriented perspective on the spaceborne InSAR technology with emphasis on subsequent geophysical investigations. First, the fundamentals of radar interferometry and differential interferometry, as well as error sources, are briefly introduced. Emphasis is then placed on the realistic simulation of the underlying geophysics processes, thus offering an unfolded perspective on both analytical and numerical approaches for modeling deformation sources. Finally, various experimental investigations conducted by acquiring SAR multitemporal observations on areas subject to deformation processes of particular geological interest are presented and discussed.
Applications Of Sar Interferometry For Monitoring Ground Deformations And Engineering Infrastructures
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Author : Sara Frangioni
language : en
Publisher:
Release Date : 2015
Applications Of Sar Interferometry For Monitoring Ground Deformations And Engineering Infrastructures written by Sara Frangioni and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Digital Surface Model Generation Over Urban Areas Using High Resolution Satellite Sar Imagery
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Author : Martina Porfiri
language : en
Publisher:
Release Date : 2016
Digital Surface Model Generation Over Urban Areas Using High Resolution Satellite Sar Imagery written by Martina Porfiri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
The urbanization and the management of urban environment and its periphery become one of the most crucial issues in developed and developing countries. In these circumstances, remote sensing data are an important source of information that reflects interactions between human beings and their environment. Given their complete independence from logistic constraints on the ground, illumination (daylight), and weather (clouds) conditions, Synthetic Aperture Radar (SAR) satellite systems may provide important contributions in complex environments 3-D reconstruction. The new generation of high resolution SAR sensors as COSMO-SkyMed, TerraSAR-X and RADARSAT-2 allowed to acquire high resolution SAR imagery. Here the attention is put on the 3-D imaging technique called SAR Tomography: starting from a stack of images collected using multibaseline data performed in interferometric configuration, such a technique allows to retrieve height information forming a synthetic aperture in the elevation direction in order to achieve a substantially improved resolution. The present PhD thesis is focused on the high potentialities of tomographic techniques in 3-D change monitoring and characterization for complex and dense built-up areas using basic mono-dimensional estimators as Beamforming, Capon and MUSIC combined to very high satellite SAR resolution imagery. 2-D and 3-D analysis have been presented over the urban area of Paris using TerraSAR-X data at high resolution and single polarisation. Being mainly focused on the 3-D tomographic techniques, in the presented work 4-D methods, such as compressive sensing (CS), have not been taken into account. At first, the analysis of the interferometric quality of the processed data set has been performed and results showed good mean coherence values within the entire stack. The extraction of 2-D tomograms over different azimuth-profile has showed the capabilities to distinguish more than one scatterer within the same resolution cell and to reconstruct the vertical building profiles. Successively, a global 3-D characterization both in term of buildings heights and vertical reflectivity has been performed in order to develop a monitoring tool for the changes of single structures. Moreover, the possibility to correct the geometric distortions due to the layover (that strongly affects such kind of scenarios) and to determine the information about the number of scatterers (up to three) and the corresponding reflectivity within one resolution cell have been evaluated. Moreover an innovative time stability analysis of the observed scene have been carried out in order to detect the stable and unstable scatterers. Globally, the investigations showed noisier and sparser point clouds for the Capon method, whereas better capabilities for the Beamforming and MUSIC ones. Indeed, it was possible to detect different scatterers located within the same resolution cell and to resolve pixels affected by the layover. This has lead to perform a good reconstruction of building shape and location and a good estimation of their elevation. The 3-D time stability analysis demonstrated the possibility to monitor the 3-D change depending on the time. Eventually, it is possible to assert that processing high resolution SAR data allows to achieve a strong improvement in 3-D imaging capabilities. It has been demonstrated the potentialities of TomoSAR technique in distortions correction and in 3-D change monitoring using basic mono-dimensional estimators.
Infrastructure Monitoring With Spaceborne Sar Sensors
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Author : ANDREI ANGHEL
language : en
Publisher: Springer
Release Date : 2017-03-22
Infrastructure Monitoring With Spaceborne Sar Sensors written by ANDREI ANGHEL and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-22 with Technology & Engineering categories.
This book presents a novel non-intrusive infrastructure monitoring technique based on the detection and tracking of scattering centers in spaceborne SAR images. The methodology essentially consists of refocusing each available SAR image on an imposed 3D point cloud associated to the envisaged infrastructure element and identifying the reliable scatterers to be monitored by means of four dimensional (4D) tomography. The methodology described in this book provides a new perspective on infrastructure monitoring with spaceborne SAR images, is based on a standalone processing chain, and brings innovative technical aspects relative to conventional approaches. The book is intended primarily for professionals and researchers working in the area of critical infrastructure monitoring by radar remote sensing.