Notice of RetractionApplication of Wavelet Threshold De-Noising in Settlement Monitoring for Subway

Discussed the ideas of wavelet analysis for data reliability testing and its implementation methods, Researched the method of wavelet denoising threshold selection. We applied the method to Guangzhou subway settlement monitoring data reliability testing and analysis, and got a good effect of gross error detection and eliminate, Proved that wavelet threshold de-noising can effectively eliminate gross errors, retention of useful settlement information and help to improve subway settlement analysis and forecasting reliability.