Deformation analysis of a metropolis from C- to X-band PSI: proof-of-concept with Cosmo-Skymed over Rome, Italy

摘要

Stability of monuments and subsidence of residentialudquarters in Rome (Italy) are depicted based on geospatialudanalysis of more than 310,000 Persistent Scatterers (PS)udobtained from Stanford Method for Persistent Scatterersud(StaMPS) processing of 32 COSMO-SkyMed 3m-resolutionudHH StripMap ascending mode scenes acquired between 21udMarch 2011 and 10 June 2013. COSMO-SkyMed PSuddensities and associated displacement velocities areudcompared with almost 20 years of historical C-band ERS-ud1/2, ENVISAT and RADARSAT-1/2 imagery. Accountingudfor differences in image processing algorithms and satelliteudacquisition geometries, we assess the feasibility of groundudmotion monitoring in big cities and metropolitan areas byudcoupling newly acquired and legacy SAR in full time series.udLimitations and operational benefits of the transition fromudmedium resolution C-band to high resolution X-band PSuddata are discussed, alongside the potential impact on theudmanagement of expanding urban environments.