InSAR User Manual

Radar interferometry is a technique which combines the coherent phase from a pair of synthetic
aperture radar (SAR) signals to provide three-dimensional information about the Earth’s surface.
The technique requires the coregistration and processing of two SAR signals from very similar
viewing geometries which have been acquired over the region of interest. By coherently
combining the signals from the two acquisitions, the interferometric phase between the received
signals can be determined for each imaged point.