Noise analysis of dynamic GPS monitoring sequence based on wavelet analysis
Yue Shu · Journal of Heilongjiang Institute of Technology · 2014
Based on wavelet multi-resolution function,it presents the multilayer decomposition of Sutong Bridge pylon high frequency monitoring data sequence,and levels the noise sequences of different frequency.Then it estimates the spectral index of each noise sequence by using noise analysis method, thereby discriminating against noise.The result shows that the GPS dynamic monitoring data contains mainly white noise and flicker noise,while random walk noise is not obvious.It can provide a reference for the subsequent processing,noise reduction and error analysis of the bridge monitoring data.