Abstract
Abstract. The Persistent Scatterer Interferometry is a powerful technique for ground motion detection and monitoring over wide areas. In the recent years, PSI has undergone a rapid evolution, largely thanks to the launch of the Copernicus Sentinel-1 constellation, the refinement of algorithms, and the increased computational capabilities. These factors allow for using Sentinel-1 interferometric data to develop ground deformation services for wide-area monitoring. Firstly, we review examples of services for national or regional deformation monitoring. The paper then describes the European Ground Motion Service (EGMS), part of the Copernicus Land Monitoring Service. The EGMS represents a unique initiative for performing ground deformation monitoring on a European scale.
Highlights
Satellite-based remote sensing allows us to image wide areas, even at continental scale
The Persistent Scatterer Interferometry is a powerful technique for ground motion detection and monitoring over wide areas
The European Ground Motion Service (EGMS) represents a unique initiative for performing ground deformation monitoring on a European scale
Summary
Satellite-based remote sensing allows us to image wide areas, even at continental scale. This is a fundamental characteristic for monitoring different types of phenomena. Compared to classical DInSAR techniques, the PSI techniques have advanced capabilities for measuring and monitoring deformation. This is largely due to the exploitation of large sets of SAR images acquired over the same area of interest, and the use of advanced data processing, modelling and analysis tools to analyse the SAR image stacks. This paper briefly describes the key aspects of the PSI development in the last two decades, focusing on the PSI wide area monitoring capabilities, see Section 2.
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