ABSTRACT
High embankments reaching up to 45 meters were rapidly constructed on soft ground within just over three years in the area of Runway D at Tokyo International Airport. To improve maintenance efficiency, an accurate spatial measurement method for residual settlement is required, along with a mainte-nance and management system that links repair plans to settlement predictions. This study investigated the applicability of interferometric SAR (InSAR) analysis for measuring the spatiotemporal distribution of consolidation settlement. The investigation covered the entire area of Tokyo Haneda Airport. Satellite im-agery from various measurement bands was used for the InSAR analysis. As a result, high coherence was confirmed in the runway using satellite imagery from COSMO-SkyMed de-spite the relatively long vertical component of the interferometric pair baseline length. The settlement measurements obtained through SAR analysis closely matched those obtained with a mobile 3D laser scanner. Based on these results, using In-SAR analysis for wide-area ground displacement measurement is effective for future maintenance and man-agement.
