Using Gaussian smoothing method for extracting structural vibrations from GPS displacement time series
Sichun Long · Journal of Hefei University of Technology · 2010
The observation signal of the GPS is usually very noisy when it is used for structural vibration monitoring.The error source of GPS signals is analyzed in this paper.Based on the fact that the multipath error of GPS observations in sequent two days is awfully correlative,the Gaussian smoothing method is proposed to extract the real structural vibrations from the noisy GPS displacement time series.Experimental data analysis results show that this method can mitigate the multipath error and observation noise,and it can extract real structural vibration signals successfully.