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分析论证了Ｍａｌａｔ快速小波变换和小波包数据分析的频率结构关系，为小波方法在工程中的应用提供了理论依据，并给出了小波变换及其频率结构关系在表面形貌分析中的应用方法和技巧．
The relationship between the frequency structure of Malat ’s fast wavelet transform and wavelet packet data analysis is analyzed and proved, which provides a theoretical basis for the application of wavelet method in engineering. The application of wavelet transform and its frequency structure in the analysis of surface topography And tips.