The SAR (Synthetic Aperture Radar) is a radar which acquires synthesized images with high resolution independently from the weather conditions; for these reasons the SAR plays an important role in remote sensing, when high resolution and temporal continuity are required. In the past, SAR systems main goals were the study of the interaction between electromagnetic waves and the Earth surface. Quickly the intrinsic capability of this instrument to analyze the dynamic characteristics of the observed objects and the changes of the requirements of the users made the SAR particularly fit for...