小波包分析在GPS振动观测中的应用
Engineering of Surveying and Mapping(2017)
Abstract
将小波包分析应用于GPS振动观测数据处理,研究小波包分析在异常值探测、信号特征提取、去噪中的应用.首先对信号分解和单支重构,验证小波包分析探测异常值的能力.针对小波包分析含有丰富的高频信息,采用奇异谱分析方法提取高频部分的振幅和频率.小波包分析的去噪能力优于小波分析.
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Key words
wavelet packet analysis,outlier detection,signal feature extraction,wavelet packet de-noising,singular spectrum analysis
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