Fig. 1From: Spaceborne, UAV and ground-based remote sensing techniques for landslide mapping, monitoring and early warningActive optical and SAR satellites for landslide mapping and monitoring. The numbers on the right of the figure report the revisting time of each satellite. RCM: Radarsat constellation mission, CSK: COSMO-Skymed, CSK–SG: COSMO-Skymed Second GenerationBack to article page