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中文摘要：
由于多小波具有单小波所不能同时具备的多种优良性质，同时拥有多个时频特征有所差异的基函数，使得多小波变换在信号数据处理等方面具有显著优势。为了准确获取变形特征，给出不同多小波在变形数据处理中的应用对比分析。实验结果表明，不同多小波选择合适的预处理方法，有效去除了变形监测数据里的干扰成分，实现变形趋势的提取，取得好的信号消噪效果，具有好的应用效果。
英文摘要：
Because multi-wavelet has many better qualities than traditional wavelet, and has different base-functions with more time frequency characteristics, it makes that multi-wavelet transform has significant advantages in signal data processing. In order to accurately obtain the deformation characteristics, this paper gives different deformation feature extraction methods with multi-wavelet and takes comparative analysis. The experimental results show that： multi-wavelet with selection of suitable pretreatment method can effectively eliminate interference components in the deformation monitoring data, and obtain better deformation features.
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