ABSTRACT
Synthetic aperture radar (SAR) is used in Persistent Scatterer Interferometry (PSI), a remote sensing technique that tracks ground deformation. PSI provides high-resolution maps of subsidence, uplift, and lateral motion by observing stable radar targets (persistent scatterers) across time. PSI is especially useful for studying natural and urban hazards since it gives accurate data on ground movement, which helps with geohazard monitoring and evaluations of the integrity of infrastructure. The capabilities of PSI are further enhanced by ongoing technical improvements in SAR, hence establishing its significance in geospatial analysis and Earth observation. By observing steady radar targets throughout time, Persistent Scatterer Interferometry (PSI) in Synthetic Aperture Radar (SAR) is an excellent tool for monitoring ground deformation. Its uses include evaluating the integrity of urban infrastructure and identifying lateral motions, uplift, and subsidence. PSI is essential for geohazard monitoring because it offers reliable and consistent data on possible threats. With its accurate measurements and great temporal resolution, PSI is a vital tool for geospatial analysis and Earth observation, and its importance is only likely to increase as SAR technology continues to progress.
