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Bubble小波的正交条件研究
On Orthogonality Condition of Bubble Wavelets
【摘要】 根据小波正交性的等价叙述定理和L2(R)中函数整数平移系的Riesz界等价叙述定理,从三个方面系统地分析讨论Bubble小波的正交条件。适当选择Bubble函数的形状参数,可以得到正交和几乎正交的Bubble小波,并指出墨西哥帽函数不能当成几乎正交的小波函数使用。
【Abstract】 According to the equivalent expression theorem about the orthogonality of wavelets and the equivalent expression theorem about the Riesz bounds of integral shifting basis of a function in L2(R),the orthogonality condition of Bubble wavelets is analysed and discussed systematically from three respects.The results show that the orthogonal and almost orthogonal Bubble wavelet can be constructed by selecting appropriately the shape parameter of Bubble functions,but the Mexicanhat wavelet (a special Bubble wavelet) can not be regarded as an almost orthogonal wavelets.
【关键词】 Bubble函数;
正交性;
Riesz界;
墨西哥帽小波;
【Key words】 Bubble function; orthogonality; Riesz bound; Mexicanhat wavelet;
【Key words】 Bubble function; orthogonality; Riesz bound; Mexicanhat wavelet;
【基金】 国家教委博士点基金
- 【文献出处】 电子科技大学学报 ,JOURNAL OF UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA , 编辑部邮箱 ,1998年01期
- 【分类号】TN911.7,TN64
- 【被引频次】14
- 【下载频次】75