Sentinel 1 SAR interferometry applications: The outlook for sub millimeter measurements

► Millimeter motions of the terrain are needed for CO2 sequestration monitoring. ► The permeability of the reservoir is measured and reopening of faults is observed. ► Millimeter precision is attained by radar interferometry, with PSInSAR methodology. ► Alternate methodologies like GPS and optical have yet to be proven adequate to the task. ► Atmospheric delays can be practically removed if reference points are closer than 1 km.