Demonstration of InSAR-Based Three Dimensional Continuous Deformation Monitoring

Toward 6 dimensional synthetic aperture radar (SAR), i.e., the combination of three dimensional SAR tomography (To-moSAR) and three dimensional differential SAR interferometry (3DInSAR), continuous three dimensional deformation monitoring using SAR is an arising theme. In this paper, we report initial results using the dataset for the active volcano in the Pacific Ocean, Nishinoshima. We observed the island frequently for three months from three identical orbits including left observation and recovered three dimensional deformation of the volcanic island continuously. Experimental results revealed several small events in the volcano and showed the possibility of the method.