ValInSAR: A systematic approach for the validation of Differential SAR Interferometry in land subsidence areas

Land subsidence is a natural or anthropogenic process triggering the settlement of Earths surface. When this phenomenon induced by groundwater withdrawal, compaction unconsolidated sediments causes land displacement. Differential Interferometric Synthetic Aperture Radar (DInSAR) widely used nowadays to monitor over extensive areas. However, validation DInSAR measurements with in-situ techniques lacking in many case studies, reducing reliability further analyses. The aim study propose systematic methodology validate obtain reliable measurements. paper provides literature review most common approaches and description proposed methodology, which supported MATLAB open-source code. allows analysis both DInSAR-based velocity displacement time series. We set statistics assess accuracy estimates. For purpose, RMSE parameters have been normalised range average deformation values. Moreover, combining these Pearson correlation coefficient (R2) classification scheme recommended for accepting/rejecting data This has applied three areas characterised very well-documented processes: Alto Guadalentn valley Murcia city Spain, San Luis Potos Mexico.