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《Hydropower Automation and Dam Monitoring》 2006-04
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Noise of Dam GPS Signal Based on Wavelet Analysis

XIA Kaiwang, TIAN Linya, YANG Yongping (Anhui Institute of Architecture & Industry, Hefei 230601, China) (Hohai University, Nanjing 210098, China) (North Automatic Control Technology Institute, Taiyuan 030006, China)  
Because of complicated observation conditions, the dam GPS signals always encounter several kinds of disturbances. By use of the advantages of wavelet analysis in multi-scale, multi-resolution, flexibility and movability, the original carrier wave signals, single-difference observed values and double-difference observed values obtained from the GPS control network of a darn are decomposed for the research into the characteristics of high-frequency noise. The research demonstrates the theoretical and practical significance of wavelet analysis in decomposition and recomposition of GPS data. It is an important mathematical tool for GPS data processing.
【CateGory Index】: TV698.1;P228.4
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