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HERMITE型导数样本定理和Sobolev类上的混淆误差
SAMPLING THEOREM OF HERMITE TYPE AND ALIASING ERROR ON THE SOBOLEV CLASS OF FUNCTIONS
【摘要】 证明了 :如果函数f属于带有限函数类B2σ ,p,1<p <∞ ,即 p 次可积且Fourier变换支集包含于闭区间 [-σ ,σ]的函数全体 ,则它能在Lp(R)范意义下由其样本序列 { f(kπ/σ) } k∈Z,{ f′(kπ/σ) } k∈Z通过Hermitecardinal插值完全重构 ,并且对 f∈Lrp(R) ,1<p <∞确定了Hermitecardinal插值的混淆误差阶的精确估计
【Abstract】 It is shown that a function f is in the bandlimited class B 2σ,p ,1<p<∞ , that is, those p integrable functions whose Fourier transform is supported in the interval [- σ, σ ], then it can be reconstructed in the sense of L p (R) norm by its sampling sequences {f(k π /σ)} k∈Z and { f′(k π /σ)} k∈Z via the Hermite cardinal interpolation . Moreover, if f belongs to L r p(R),1<p<∞, then the exact order of its aliasing error is determined.
【关键词】 Marcinkiewicz型不等式;
带有限函数;
导数样本;
Sobolev函数类;
混淆误差;
【Key words】 Marcinkiewicz type inequality; bandlimited function; derivative sampling; Sobolev classes of functions; aliasing error;
【Key words】 Marcinkiewicz type inequality; bandlimited function; derivative sampling; Sobolev classes of functions; aliasing error;
【基金】 国家自然科学基金资助项目 (10 3 710 0 9)
- 【文献出处】 北京师范大学学报(自然科学版) ,Journal of Beijing Normal University(Natural Science) , 编辑部邮箱 ,2004年03期
- 【分类号】O211
- 【被引频次】15
- 【下载频次】55