{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T20:02:23Z","timestamp":1774641743129,"version":"3.50.1"},"reference-count":64,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2021,3,10]],"date-time":"2021-03-10T00:00:00Z","timestamp":1615334400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003407","name":"Ministero dell\u2019Istruzione, dell\u2019Universit\u00e0 e della Ricerca","doi-asserted-by":"publisher","award":["PRIN 2017, Prot. 20179BP4SM."],"award-info":[{"award-number":["PRIN 2017, Prot. 20179BP4SM."]}],"id":[{"id":"10.13039\/501100003407","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>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\u2013temporal 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.<\/jats:p>","DOI":"10.3390\/rs13061052","type":"journal-article","created":{"date-parts":[[2021,3,10]],"date-time":"2021-03-10T20:51:42Z","timestamp":1615409502000},"page":"1052","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["An Application of Persistent Scatterer Interferometry (PSI) Technique for Infrastructure Monitoring"],"prefix":"10.3390","volume":"13","author":[{"given":"Peppe J. V.","family":"D\u2019Aranno","sequence":"first","affiliation":[{"name":"Survey Lab, Spinoff Sapienza University, Via Eudossiana 18, 00184 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4552-9173","authenticated-orcid":false,"given":"Alessandro","family":"Di Benedetto","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering, University of Salerno, 84084 Fisciano, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6290-5556","authenticated-orcid":false,"given":"Margherita","family":"Fiani","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering, University of Salerno, 84084 Fisciano, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3236-934X","authenticated-orcid":false,"given":"Maria","family":"Marsella","sequence":"additional","affiliation":[{"name":"Universit\u00e0 di Roma La Sapienza, Via Eudossiana 18, 00184 Rome, Italy"}]},{"given":"Ilaria","family":"Moriero","sequence":"additional","affiliation":[{"name":"Universit\u00e0 di Roma La Sapienza, Via Eudossiana 18, 00184 Rome, Italy"}]},{"given":"Jos\u00e9 Antonio","family":"Palenzuela Baena","sequence":"additional","affiliation":[{"name":"Universit\u00e0 di Roma La Sapienza, Via Eudossiana 18, 00184 Rome, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bru, G., Gonz\u00e1lez, P.J., Mateos, R.M., Rold\u00e1n, F.J., Herrera, G., B\u00e9jar-Pizarro, M., and Fern\u00e1ndez, J. 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