An application of persistent scatterer interferometry (PSI) technique for infrastructure monitoring
| Autor: | Alessandro Di Benedetto, Maria Marsella, Peppe Junior Valentino D'Aranno, Margherita Fiani, José Antonio Palenzuela Baena, Ilaria Moriero |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Multimodal transport
010504 meteorology & atmospheric sciences Science Transport network 0211 other engineering and technologies Context (language use) 02 engineering and technology infrastructure Urban area 01 natural sciences Interferometric synthetic aperture radar ENVISAT PSI SAR Interferometry ERS1/2 COSMO-SkyMed Infrastructure Monitoring 021101 geological & geomatics engineering 0105 earth and related environmental sciences Remote sensing geography geography.geographical_feature_category interferometry Metropolitan area Port (computer networking) monitoring General Earth and Planetary Sciences Environmental science Scale (map) |
| Zdroj: | Remote Sensing, Vol 13, Iss 1052, p 1052 (2021) Remote Sensing; Volume 13; Issue 6; Pages: 1052 |
| Popis: | In the absence of systematic structural monitoring to support adequate maintenance standards, many existing infrastructures may reach unacceptable quality levels during their life cycle, resulting in significant damage and even potential failure. The metropolitan area of the Gulf of Salerno (Italy), served by a complex multimodal transport network connecting the port area to the roads and railways surrounding the urban area, represents an important industrial and commercial hub at the local and international scale. This particular scenario, developed in a complex morphological and geological context, has led to the interference and overlapping of the transport network (highway, railway, main and secondary roads) that run through the piedmont area north of the port. Given the relevance of the area, our research aims to highlight the capabilities of the persistent scatterer interferometry (PSI) technique, belonging to the group of differential interferometric synthetic aperture radar (SAR), to extract space–temporal series of displacements on ground points or artifacts with millimeter accuracy useful to understand ongoing deformation processes. By using archived data from the European Space Agency missions, i.e., ERS1/2 (European remote-sensing satellite) and ENVISAT (environmental satellite), and the most recent data from COSMO-SkyMed constellations, it was possible to collect a 28-year dataset that was used to spatially analyze displacement patterns at a site-specific scale to check the stability of viaducts and embankments, and on a larger scale to understand the activity of the surrounding slopes. Despite the different resolution and subsequently the ground density, the analysis of the different datasets showed a spatiotemporal consistency in the displacement patterns that concerned two subareas showing significant annual velocity trends, one northeast of the city and the second in the port area. The analysis presented in this paper highlights how a complex geologic area, combining slope movements and various fault systems, could be a major concern for the stability of the overlying infrastructure and also the role that a PSI analysis can play in remotely monitoring their behavior over long periods of time. |
| Databáze: | OpenAIRE |
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