SAR Tomography for 3D Reconstruction and Monitoring
Cosmo-Skymed; Differential interferometry; DInSAR; Displacement measurement; Infrastructures monitoring; Multidimensional SAR imaging; SAR tomography; Synthetic-aperture radar, SAR; TerraSAR-X
Synthetic-aperture radar (SAR) is one of the most important Earth remote sensing sensors whose applications have grown dramatically in the recent years. It provides images at microwaves with resolution comparable to that of optical systems, but with the crucial advantage of all-time, day/night, and all-weather, imaging capability. Similarly to classical surveillance radars, SAR measures the distance (range) from sensor to target: resolutions of the order of meters are achieved through the pulse compression of large bandwidth (frequency-modulated) signals. Very high resolution in the along-track direction is achieved as well through the coherent combination of target echoes received over the illumination interval, thus implementing a virtual (synthetic) array of antennas...
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