InSAR is a system based on microwave of electromagnetic spectrum of remote sensing. An active remote sensing system are as Shuttle Radar Topographic Mission and Radarsat satellites. These satellites have specific application in natural phenomena measurements as geophysical deformations studies – topography, surface changes/ tectonic deformation, volcanic eruption, land subsidence, landslides and so on displacements of earth surface. Likewise, microwave sensing has also significant role in infrastructure and building monitoring, bridge movement, tunnel deformation measurement as an early warning system. So, InSAR imagery are also used in generation of DEM which can help better understand and mange real world’s problems in real time.