Abstract:In this paper, we extract the deformation information of Baige landslide, Polo town, Jomda county, Tibet, by PS-InSAR and SBAS-InSAR techniques using ALOS-2 PALSAR2 images of 12 scenes from 2015 to 2019 and Sentinel-1A images of 38 scenes from 2018 to 2019 as the main data sources. The main conclusions of this paper are as follows: 1) Under the PS-InSAR technique, the average deformation rates of ALOS-2 data and Sentinel-1A data range from -68.9~37.9 mm/a and -64.5~24.2 mm/a. The average deformation rates of ALOS-2 and Sentinel-1A data range from -84.2~-40.0 mm/a and -84.0~-13.0 mm/a under the conditions of SBAS-InSAR technology. 2) Timing sequence analysis and quantitative analysis are performed on the four feature points extracted from the two data results. The results of the two technique showed a consistent trend. Thus, the reliability and accuracy of the two time-series InSAR techniques in landslide monitoring are verified.
FU Bolin,XIE Shuyu,LI Tao et al. Comparative Study of Landslide Remote Sensing Monitoring Based on SBAS/PS-InSAR Technology[J]. jgg, 2021, 41(4): 392-397.