Slope Stability Monitoring By The Use Of GPS Multipath As A Signal

GPS multipath has long been considered a major error source in GPS applications. In this paper, however, an attempt is made to use multipath as a signal. The proposed application of using GPS multipath to monitor the slope stability involves two steps. The first step is to extract multipath and to detect its change based on an adaptive filter using the leastmean-square algorithm. In the second step, the mathematical models for slope stability monitoring using the change of GPS multipath effects have been established. In addition to the monitoring of slope stability, this technique provides an easy-to-implement quality assurrance tool for CGPS antenna environment sensing after disasters such as typhoons, cyclones, and earthquakes.