Deformation Extraction Method of Transmission Tower Foundation using PS-InSAR.

In this paper, Persistent scatterer interferometric synthetic aperture radar (PS-InSAR) is employed to extract the deformation of the transmission tower foundations. The extracted results are compared with the measured results to verify the correctness of the extracted results. 26 SAR images from January to December 2021 are selected for the deformation extraction of the high voltage transmission tower foundations near the landslide area in Guangyuan City, Sichuan, China. Time sequence analysis was performed using the StaMPS software, and GACOS products were used for atmospheric correction. The final deformation results are compared with the monitoring results of the sensors installed on the foundations of the transmission tower. The comparison shows the effectiveness of the method. The conclusions obtained from the experiment provide scientific guidance and suggestions for the power maintenance personnel.