Settlement is one of the most important deformation characteristics of high concrete faced rockfill dams (CFRDs, >100 m). High CFRDs safety would pose a great threat to the security of people’s lives and property downstream if this kind of deformation were not to be measured correctly, as traditional monitoring approaches have limitations in terms of durability, coverage, and efficiency. It has...

SAR interferometry (InSAR) has become one of the most powerful tools in radar remote sensing. Generation of digital elevation models, measurement of glacier flows and mapping of earthquakes, volcanoes and subsidence are the most prominent applications of InSAR. For most of these applications continuous acquisition of SAR data from space over many years, like with the ERS-1/2 or Radarsat, is ind...

SAR Interferometry (InSAR) is a technique that is fast becoming an attractive prospect for routine derivation of land deformation parameters in events of a long-term and cataclysmic nature. The technique involves the analysis of the interferometric phase gradient, in both temporal and spatial dimensions, as it is generally difficult to derive the absolute value of the phase due to an integer am...

When synthetic aperture radar interferometry (InSAR) technology is applied in the monitoring of land subsidence, the sensor band plays an important role. An X-band SAR system as TerraSAR-X (TSX) provides high resolution and short revisit time, but it has no capability of global coverage. On the other side, an L-band sensor as Advanced Land Observing Satellite-Phased Array L-band Synthetic Apert...

Mapping three-dimensional (3D) surface deformation caused by an earthquake is very important for the environmental, cultural, economic and social sustainability of human beings. Synthetic aperture radar (SAR) systems made it possible to measure precise 3D deformations by combining SAR interferometry (InSAR) and multiple aperture interferometry (MAI). In this paper, we retrieve the 3D surface de...

This paper presents a first calibration and quality analysis of Pol−InSAR data acquired by the ALOS−PalSAR based on deterministic and extended scatterers. The calibration of Pol−InSAR data requires the estimation and compensation of polarimeteric and interferometric system and propagation (through the ionosphere and atmosphere) induced distortions. Constant phase errors/offsets appear in the po...

Time series analysis of InSAR data has emerged as an important tool for monitoring and measuring the displacement of the Earth’s surface. Changes in the Earth’s surface can result from a wide range of phenomena such as earthquakes, volcanoes, landslides, variations in ground water levels, and changes in wetland water levels. Time series analysis is applied to interferometric phase measurements,...

Several methods allow accurate measurement of terrain surface motions. Global navigation satellite systems (GNSSes) and interferometry with synthetic aperture radar (InSAR) stand out in terms accuracy among them. In principle, both make it possible to evaluate a three-dimensional vector the motion points on surface. this work, we dealt evaluation motions up–down (U–D) east–west direction (E–W) ...

We present and analyze an algorithm for the production of accurate digital elevation models (DEMs) using interferometric synthetic aperture radar (InSAR). The algorithm requires minimal manual intervention, as a result of using coarse or low-quality DEMs in the InSAR processing stream. The low-quality DEM data are used to estimate the relative geometry (baseline parameters) of the SAR systems. ...