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arXiv 1202.5841math.FAmath-phmath.CVmath.MP
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局部化算子的一个反问题

An Inverse Problem for Localization Operators

Luis Daniel Abreu, Monika Doerfler

摘要:

时频分析的经典结果,由I。Daubechies在1988年指出,具有圆形局部化域和高斯分析窗口的时频局部化算子的特征函数是Hermite函数。本文证明了Daubechies定理的一个逆定理。更精确地说,它表明,对于单连通局部化域,如果一个具有高斯窗口的时频局部化算子的特征函数之一是一个Hermite函数,那么它的局部化域是一个圆盘。一般的问题,从一些知识,其特征函数,信息的符号的时间-频率局部化运营商,表示为逆问题,和问题的研究Daubechies的直接问题的时间-频率分析。在这里,我们也解决了相应的问题,小波本地化,提供反问题模拟的直接问题研究的Daubechies和保罗。

英文摘要:

A classical result of time-frequency analysis, obtained by I. Daubechies in 1988, states that the eigenfunctions of a time-frequency localization operator with circular localization domain and Gaussian analysis window are the Hermite functions. In this contribution, a converse of Daubechies' theorem is proved. More precisely, it is shown that, for simply connected localization domains, if one of the eigenfunctions of a time-frequency localization operator with Gaussian window is a Hermite function, then its localization domain is a disc. The general problem of obtaining, from some knowledge of its eigenfunctions, information about the symbol of a time-frequency localization operator, is denoted as the inverse problem, and the problem studied by Daubechies as the direct problem of time-frequency analysis. Here, we also solve the corresponding problem for wavelet localization, providing the inverse problem analogue of the direct problem studied by Daubechies and Paul.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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