Located on the mountainous area, Kelok Sembilan flyover area in West Sumatra,\nIndonesia has a long history of land deformation, therefore monitoring\nand analyzing as continuously is a necessity to minimize the impact.\nNotably, in the rainy season, the land deformation occurs along this area. The\nzone is crucial as the center of transportation connection in the middle of\nSumatra. Quasi-Persistent Scatterer (Q-PS) Interferometry technique was applied\nfor extracting information of land deformation on the field from time to\ntime. Not only does the method have high performance for detecting land\ndeformation but also improve the number of PS point, especially in a\nnon-urban area. This research supported by 90 scenes of Sentinel-1A\n(C-band) taken from October 2014 to November 2017 for ascending and\ndescending orbit with VV and VH polarization in 5 Ã? 20 m (range Ã? azimuth)\nresolution. Both satellite orbits detected two critical locations of land\ndeformation namely as zone A and Zone B, which located in positive steep\nslope where there is more than 500 mm movement in the Line of Sight (LOS)\nduring acquisition time. Deformations in the vertical and horizontal direction\nfor both zone, are 778.9 mm, 795.7 mm and 730.5 mm, 751.7 mm, respectively.\nFinally, the results were confirmed by ground truth data using Unmanned\nAerial Vehicle (UAV) observation.
Loading....