Technique
What is InSAR
InSAR main principle is a comparison of at least two satellite SAR images acquired over the same place at different times. An appropriate processing of such images allows detecting and measuring deformations of land, structures and infrastructures.
Key advantages
Ubiquity, high precision, large number of measurements and low cost – the key characteristics of the method. InSAR also allows «travelling back in time”, i.e. viewing historical evolution of a deformation, using archive data.
InSAR Imagery
InSAR imagery is ubiquitous and independent of the sunlight and weather.
The SAR imagery – satellite radar data – is provided by a number of operators: European Space Agency’s Copernicus (Sentinel satellite), TerraSAR-X, COSMO-SkyMed, ALOS, Saocom and the others, who acquire in different bands with different resolutions and revisit times.
