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An accurate digital elevation model (DEM) is a critical data set for characterizing the natural landscape, monitoring natural hazards, and georeferencing satellite imagery. The ideal interferometric synthetic aperture radar (InSAR) configuration for DEM production is a single-pass two-antenna system. Repeat-pass single-antenna satellite InSAR imagery, however, also can be used to produce useful...
فرونشست پدیده ای مرفولوژیکی است که تحت تأثیر حرکت فرو رو زمین پدید می آید. علت رخداد این پدیده ممکن است متأثر از عوامل طبیعی و انسانی باشد. در ایران به ویژه در محدوده مورد مطالعه، رویداد آن اغلب متوجه فعالیت های انسانی و به ویژه بهره برداری بی رویه از منابع آب زیرزمینی است. محدوده مورد مطالعه در ناحیه بیابانی ایران واقع شده و به سبب خشکی محیط و نبود منابع آب سطحی، حیات و فعالیت های اقتصادی آن ب...
Differential synthetic aperture radar interferometry (InSAR) is widely used to monitor ground surface deformation due its wide coverage and high accuracy. However, the large-scale rapid that occurs in mining areas often leads densely spaced interference fringes, thus, severely limiting applicability of D-InSAR subsidence monitoring. Sub-band InSAR can reduce phase gradients interferograms by in...
The three-dimensional (3-D) displacements of mining areas is the basis studying subsidence law and obtaining surface movement parameters. traditional multi-temporal interferometry synthetic aperture radar (InSAR) technology can only obtain deformation in line-of-sight (LOS) direction, even if some methods 3-D area based on InSAR. However, it has high data requirements for types, which are not c...
Helmand River Hydrologic Studies Using ALOS PALSAR InSAR and ENVISAT Altimetry Zhong Lu a; Jin-Woo Kim b; Hyongki Lee b; C. K. Shum b; Jianbin Duan b; Motomu Ibaraki b; Orhan Akyilmaz c; Chung-Hye Read d a U.S. Geological Survey, Vancouver, Washington, USA b School of Earth Sciences, The Ohio State University, Columbus, Ohio, USA c Department of Geodesy and Photogrammetry, Istanbul Technical Un...
Monitoring Potential Geological Hazards with Different InSAR Algorithms: The Case of Western Sichuan
In recent years, the number of geological disasters in Sichuan Province has significantly increased due to influence earthquakes and extreme climate, as well disturbance environment by human activities. Thus, disaster monitoring is particularly important, which can provide some scientific basis for prevention reduction. this paper, interferometric synthetic aperture radar (InSAR) technology was...
To generate an accurate digital elevation model (DEM), Interferometric Synthetic Aperture Radar (InSAR) requires precise orbit data and baseline information, which are not always available. An alternative approach is to apply quality ground control points (GCPs) into the InSAR processing. However, locating high quality GCPs can also be difficult task, due to the low spatial resolution and radio...
all-weather, dayand-night imaging capability for mapping the Earth’s surface. Through interferometric synthetic aperture radar (InSAR) technique, radar imagery can be used to map Earth surface characteristics and measure land surface deformation at an unprecedented precision and spatial resolution. This article introduces the basics of radar and InSAR imaging, summarizes the revolution of InSAR...
Synthetic aperture radar interferometry (InSAR) is an important remote sensing technique to retrieve the terrain digital elevation model (DEM)[1][2]. Image coregistration, InSAR interferometric phase estimation (or noise filtering) and interferometric phase unwrapping[3][4][5][6] are three key processing procedures of InSAR. It is well known that the performance of interferometric phase estimat...
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