Description: Protecting the Earth A nd supporting our daily lives from space
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InSAR (Interferometric Synthetic Aperture Radar) is a technique for mapping ground deformation using radar images of the Earth's surface that are collected from orbiting satellites. Unlike visible or infrared light, radar waves penetrate most weather clouds and are equally effective in darkness. So with InSAR it is possible to track ground deformation even in bad weather and at night-two big advantages during a volcanic crisis. Two radar images of the same area that were collected at different times from si
To create this radar deformation "picture" a pulse of radar energy is emitted from a satellite, scattered by the Earth's surface, and recorded back at the satellite with two types of information: amplitude and phase. The amplitude is the strength of the return signal, influenced by the physical properties of the surface. The round trip distance from the satellite to the ground and back again is measured in units of the radar wavelength, and changes in that distance between the time two radar images were col
We use satellites to measure surface motions anywhere around the world. This technique is called InSAR. Our deformation data is fundamentally changing the way our customers look at their assets. We help people manage their maintenance for the long term and we help prevent environmental disasters. Radar satellites started recording surface movements in 1992. Since then the number of satellites and the resolution of the images have increased significantly. We can built a data archive that covers 70% of the ea