NON-INVASIVE METHODOLOGY FOR THE URBAN MONITORING BASED ON THE COMBINED USE OF INSAR, GBSAR AND RAR SENSORS: FROM THE SURFACE DEFORMATIONS TO SINGLE-BUILDING DYNAMICAL BEHAVIOUR

摘要

In this work, a non-invasive multi-spatial and multitemporalrnmethodology to monitor urban areas andrnhistoric buildings is proposed to characterizernenvironmental and building vulnerability in the contextrnof a seismic/hydrogeological hazard prone area. Thernproposed approach is based on the combined use ofrnInterferometric Synthetic Aperture Radar (SAR) andrnground-based Real Aperture Radar (RAR) sensors. Inrndetail, space-borne X-band COSMO-SkyMed SARrnmeasurements are processed through a multi-temporalrnDInSAR technique to provide long-term (annual) meanrnsurface displacement velocity maps at regional scalern(tens km~2). Ku-band Ground-Based SAR (GBSAR)rnIBIS-L measurement campaigns are performed tornretrieve the short-term (monthly) surface displacementrnmap at local scale (hundreds m~2) using multi-temporalrnDInSAR algorithms. Finally, Ku-band GBRAR IBIS-Srnmeasurements are performed to estimate the vibrationrndisplacements and the natural oscillation frequencies ofrnstructures. The proposed methodology is tested andrndiscussed for the historic center of Cosenza town andrnthe ancient structure of Saint Augustine compound.