PS-InSAR (Persistent Scatterer InSAR)

Persistent Scatterer InSAR (PS-InSAR) is a remote sensing technique that uses satellite radar images to detect ground movement over time. It identifies stable, consistently reflecting points—called "persistent scatterers"—to measure tiny shifts in the Earth's surface, such as subsidence or uplift. By analyzing multiple images, PS-InSAR provides precise, high-resolution data on how specific locations are moving, which is valuable for monitoring infrastructure stability, urban development, and natural hazards. It offers an efficient way to track ground deformations over large areas without physical access, combining advanced radar technology and data processing for reliable geophysical insights.