Small Displacement Detection System of Landslide Using FMCW Radar with Phase-Detection and Change Point Detection Method

Abstract

The threat of landslides often occurs during the rainy season in mountainous and hilly areas. Small displacement from the slope that occurs landslides will move slowly on a millimeter scale. To minimize the impact of material losses and fatalities, a landslide monitoring system was developed using uRAD based on FMCW (Frequency Modulated Continuous Wave) radar with landslide miniatures used in the simulation to prove the concept of the phase-detection method in small displacement detection and the self-designed CPD (Change Point Detection) method. The system designed is able to detect when the movement of the miniature landslide is detected by radar. The result shows that the phase-detection method used is suitable for detecting small displacement of the object and the self-designed CPD method can determine the change point of time is good and accurate, which is CPD time detected above the 3rd second this is in accordance with the experiments carried out at the time of data collection. Based on the results, the proposed system can help to detect landslides in simulations carried out with miniature landslides as an object.