VELOCITY AND ACCELERATION OF LAND DEFORMATION ANALYSIS USING PERSISTENT SCATTERER INTERFEROMETRIC SYNTHETIC APERTURE RADAR: CASE STUDY ON KELOK SEMBILAN BRIDGE

摘要

Analysing characteristic of land deformation in the study area is helpful for mapping and preventing the impact of the landslide. Persistent scatterer Interferometric (PSI) Synthetic Aperture Radar technique has been applied on 13 ascending Advanced Land Observation Satellite Phased Array L-band Synthetic Aperture Radar (ALOS PALSAR) scenes from July 2007 until November 2010 for analysing characteristic of the landslide. The PSI is employed to identify and measure landslide deformation on the earth surface. In addition, good accuracy dues to overcoming temporal and geometrical decorrelation than conventional Interferometric SAR technique. The result showed some landslide deformed area on Kelok Sembilan bridge has been identified. Time series of landslide deformation history was used for calculating its velocity and acceleration over time. It is useful for estimating velocity and acceleration of the landslide.