Oriol Monserrat

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This paper is focused on Persistent Scatterer Interferometry (PSI), the most advanced class of differential interferometric Synthetic Aperture Radar techniques (DInSAR). The paper only refers to the PSI techniques that exploit data acquired by spaceborne SAR sensors. PSI is a powerful remote sensing technique used to measure and monitor the temporal(More)
In the last fifteen years the differential interferometric SAR, Synthetic Aperture Radar, (DInSAR) techniques have demonstrated their potential as land deformation measurement tools. In the last few years their capability has been considerably improved by using large stacks of SAR images acquired over the same area, instead of the classical two images used(More)
This paper describes a new approach to Persistent Scatterer Interferometry (PSI) data processing and analysis, which is implemented in the PSI chain of the Geomatics (PSIG) Division of CTTC. This approach includes three main processing blocks. In the first one, a set of correctly unwrapped and temporally ordered phases are derived, which are computed on(More)
This paper is focused on spaceborne Differential Interferometric SAR (DInSAR) for land deformation measurement and monitoring. In the last two decades several DInSAR data analysis procedures have been proposed. The objective of this paper is to describe the DInSAR data processing and analysis tools developed at the Institute of Geomatics in almost ten years(More)
This letter focuses on the thermal expansion component of persistent scatterer (PS) interferometry (PSI), which is a result of temperature differences in the imaged area between synthetic aperture radar (SAR) acquisitions. This letter is based on very high resolution X-band StripMap SAR data captured by the TerraSAR-X spaceborne sensor. The X-band SAR(More)
This paper is focused on a new 3D phase unwrapping procedure, named 2+1D unwrapping, which works on large stacks of differential interferometric SAR data. The procedure firstly performs a 2D phase unwrapping, which is followed by a kind of 1D phase unwrapping, i.e. the phases are unwrapped by connecting them along the time. For this reason the entire(More)
This work explores the spatial distribution of monsoonal flooded areas using ENVISAT C-band Advanced Synthetic Aperture Radar (ASAR) in the semi-arid region of N. Gujarat, India. The amplitude component of SAR Single Look Complex (SLC) images has been used to estimate the extent of surface and near-surface water dynamics using the mean amplitude (MA) of(More)
The paper focuses on the measurement of land subsidence and, more generally, of land deformation phenomena using the differential interferometric SAR (Synthetic Aperture Radar) technique (DInSAR). The paper begins with a concise description of the properties of the differential interferometric phase, which represents the information source for the(More)
The DInSAR technique enables to determine with precision the surface displacements, using a combination of multiple interferograms. The DInSAR processing steps generate different kinds of errors, which propagate in the entire chain. This work is focused on a particular type of error generated during the DInSAR processing: the unwrapping related errors. The(More)
Deformation monitoring using ground-based synthetic aperture radar (GB-SAR) data usually exploits the interferometric phases. In this letter, a new noninterferometric procedure is proposed, which exploits the geometric content of GB-SAR amplitude imagery and estimates deformation through image matching. This letter describes, step by step, this procedure.(More)