Abstract:GPS is the main means for dynamic deformation monitoring of large-span bridges. The signal of GPS contains all kinds of ‘noises’ and the true signal can be extracted after removing the noise. The EMD and wavelet de-noising method is proposed and optimized, and the EMD de-noising and the wavelet threshold de-noising methods are compared. The results show that the optimized EMD and wavelet de-noising method is effective in dynamic deformation monitoring of large-span bridges, and the de-noising effect is best.
WU Jie,GUO Bing,ZHANG Li et al. A Study of De-noising Methods for Geometric Deformation Monitoring to Large-Span Bridge[J]. jgg, 2016, 36(12): 1088-1091.