Data Quality Assessment for Post-Earthquake Damage Evaluation of Road Structures Using Ps-Insar Analysis

Key Points

• The research aims to evaluate the applicability of PS-InSAR for detecting abnormal displacements in road structures after earthquakes.
• Analyzed time series displacement data using PS-InSAR from C-band satellite Sentinel-1.
• Targeted the Kumamoto earthquake in 2016 for assessment.
• Extracted PS point data from GIS for evaluating displacement distribution across the road network.
• Successfully captured significant post-earthquake displacements in the Kumamoto area.
• PS points were found to be densely located in urban areas, indicating high accuracy.
• Data quality discussions linked PS point density distributions with land use around roads.