Noise Analysis to GPS Coordinates Monitoring Series Attending to Correlation between the Signals
Xu Yi · Geomatics & Spatial Information Technology · 2013
Time series analysis,spectral analysis and wavelet analysis theory are the main methods to analyze signals in time and frequency domain,there are mainly white noise and flicker noise in the GPS coordinates monitoring series through studying the GPS coordinates monitoring series and analyzing the noise series.However,most of the noise analysis method does not consider the correlation between the signals.For GPS station coordinates monitoring series,using multivariate wavelet deposing tools to realize the coordinates monitoring series' two-dimensional deposing based on the correlation between the coordinates signals.Analyze the two-dimensional noise series with spectral analysis method and compare the results with traditional one-dimensional deposing method.Take the GPS coordinates monitoring series of Su Tong Bridge as an example for analyzing and the result shows that the noise analysis of GPS coordinates monitoring series taking into account the correlation between the signals is more in line with the actual situation.