GNGTS 2022 - Atti del 40° Convegno Nazionale

128 GNGTS 2022 Sessione 1.3 The SAR acquisitions are from the Sentinel 1 mission, spanning the year 2019, and processed with GMTSAR (Sandwell et al. , 2011; Sandwell et al. , 2016) using the Small BAseline Subset (SBAS) (Berardino et al. , 2002) algorithm. We applied the two methods of atmospheric corrections separately to estimate the effectiveness of both. We also use them in combination because of their different ability to remove atmospheric noise. To assess the performance of the methods, separately and in combination, we referenced all the interferograms to one GPS station and we corrected the time series of all the scatters, Fig. 2 - Correlation coefficients in time between atmospheric correction and topography. Top: CSS correction; Middle: GACOS correction; Bottom: CSS correction after the application of GACOS. Fig. 3 - Correlation coefficients in time between original displacement time series or residuals and topography.