Abstract:To study the feasibility of interferometric point target analysis (IPTA) method in giant landslide monitoring, we use IPTA method to obtain the overall deformation trend and time series deformation of the Daguangbao landslide with 65 Sentinel-1A images. The global precipitation measurement data are used to analyze the relationship between deformation and precipitation, and we verify the deformation results by the StaMPS-SBAS method. The results show that the landslide is in a state of deformation during the observation period, and the deformation rate along the radar line-of-sight (LOS) direction is up to -50.590 mm/a. The deformation velocity of the feature points increases significantly during rainy season, and there is a risk of landslide development again. This study demonstrates that IPTA method shows good application effect in giant landslide deformation monitoring.
YU Bing,WANG Yang,MA Deying et al. Deformation Monitoring of Daguangbao Landslide Using Interferometric Point Target Analysis[J]. jgg, 2021, 41(12): 1276-1281.