Advances in Interferometric Synthetic Aperture Radar Technology and Systems

With advancements in radar sensors, communications, and computer technologies, as well as an increasing number of ground observation tasks emerging, Synthetic Aperture Radar (SAR) remote sensing is undergoing a transition from being theory and technology-driven to application-demand driven. Since the late 1960s, Interferometric Synthetic Aperture Radar (InSAR) theories and techniques have continued to develop. They have been significantly applied in various fields such as global topography mapping, ground deformation monitoring, marine observations, and disaster reduction efforts. Recently, space-based InSAR has undergone transformations from single frequency to multi-frequency, from low orbits to high orbits, and from a single platform to multi-platform operations, aiming for high precision and high temporal resolution land observation.