نتایج جستجو برای: dinsar technique
تعداد نتایج: 611683 فیلتر نتایج به سال:
The Differential Synthetic Aperture Radar Interferometry (DInSAR) technique is recognized as a potential remote sensing tool for detecting ground surface displacements with less than a centimetre accuracy. The surface soil moisture changes ( 1clip_image001.png" > ) during the time between the two images as an effective parameter on interferometry phase 1clip_image002.png" > ), leads to incorrec...
Communication and transportation networks are among the most important infrastructures critically involved in the development of different countries. The structural and tectonic position of Iran causes significant damage to its communication networks every year. Therefore, it is essential to adopt an integrated and flexible approach for assessing seismic risk in terms of available indicators. T...
An area of about 15 km in Central Italy, severely affected by landslide processes, has been studied by several approaches. Field surveys and multi-temporal aerial photos allowed to frame geomorphological setting and temporal evolution of instability slope processes. Starting from this information, Advanced Differential Interferometric SAR (A-DInSAR) analyses have been performed in order to impr...
Differential Interferometric Synthetic Aperture Radar (DInSAR) techniques have been recognised as an ideal tool for many ground deformation monitoring applications. However, the spatially and temporally variable delay of the radar signal propagating through the atmosphere is a major limitation to accuracy. The dominant factor to be considered is the tropospheric heterogeneity, which can lead to...
The dInSAR phase signal is a superposition of different contributions. When studying geophysical processes, we are usually only interested in the surface deformation part of the signal, and therefore, to obtain high quality results, we would like to remove other phase components. Although several ways of estimating the tropospheric phase delay contribution have already been described in the lit...
The permafrost region of Qinghai-Tibet Plateau is widely distributed with the freeze/thaw processes that cause surface structural damage. The differential interferometry synthetic aperture radar (DInSAR) can detect large scale surface deformation with high precision, thus can be used to monitor the freeze/thaw processes of frozen soil area. In this paper, the surface deformation pattern of Qing...
This study focuses on deformation mapping and monitoring using Sentinel-1 radar data the DInSAR (Differential Interferometric Synthetic Aperture Radar) technique. In particular, a Persistent Scatterer Interferometry technique was used over 15000 km2 of Pyrenees, located in Spain, Andorra France. The main goal is to monitor deformations vegetated mountainous region by exploiting wide-area covera...
This paper presents a multi-baseline DInSAR algorithm to obtain ground deformation and topography parameters from Quasi Coherent Targets (Q-CTs), such as the bare land and light cultivated areas that distribute broadly on the suburban ground surface. In this study the physical classification characteristics and coherence features are analyzed for Q-CTs targets selection. And a linked parameters...
Satellite-based interferometric synthetic aperture radar (InSAR) is an invaluable technique in the detection and monitoring of changes on surface earth. Its high spatial coverage, weather friendly remote nature are among advantages tool. The multi-temporal differential InSAR (DInSAR) methods particular estimate spatio-temporal evolution deformation by incorporating information from multiple SAR...
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