psInSAR
PSInSAR, or Permanent Scatterer Interferometric Synthetic Aperture Radar, is a remote sensing technique used to measure and monitor ground deformation over time by analyzing long sequences of SAR images. The method builds on the concept of stable, strongly reflecting targets, known as permanent scatterers, which maintain high radar backscatter coherence across many acquisitions.
By modeling the interferometric phase of many image pairs, PSInSAR estimates, for each scatterer, a time series
PSInSAR requires an archive of high-quality SAR images with similar geometry and sufficient temporal sampling. It
Applications include monitoring subsidence and uplift due to mining, groundwater extraction, or hydraulic fracturing; landslides; volcanic
PSInSAR has inspired subsequent approaches, such as Small Baseline Subset (SBAS) and time-series InSAR methods, and