Deformation monitoring at all stages of construction and operation of an infrastructure is important to mitigate not only the financial and human losses, but also ecological and environmental related problems. The development of high-resolution SAR imagery sensors aboard missions such as COSMO-SkyMed (CSK) and TerraSAR-X (TSX), together with a short revisit cycle (from 4 to 11 days), has significantly improved our capabilities for infrastructure deformation analysis from space.