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arXiv 2009.05029math.FA
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小波变换下带限函数的相位恢复

Phase retrieval of bandlimited functions for the wavelet transform

ETH Zürich(苏黎世联邦理工学院)

Rima Alaifari, Francesca Bartolucci, Matthias Wellershoff

AI总结:

研究利用小波变换绝对值恢复平方可积信号,证明有限消失矩小波可唯一恢复实值带限信号,并首次提出复值小波采样相位恢复的唯一性结果。

摘要:

我们研究从信号小波变换绝对值恢复平方可积信号,也称为小波相位恢复。我们提出了小波相位恢复的新唯一性结果。具体来说,我们证明任何具有有限消失矩的小波均可唯一恢复实值带限信号,仅在全局符号上存在差异。此外,我们首次提出采样小波相位恢复的唯一性结果,其中基础小波可为复值,并提出从采样柯西小波变换测量中进行相位恢复的唯一性结果。

英文摘要:

We study the recovery of square-integrable signals from the absolute values of their wavelet transforms, also called wavelet phase retrieval. We present a new uniqueness result for wavelet phase retrieval. To be precise, we show that any wavelet with finitely many vanishing moments allows for the unique recovery of real-valued bandlimited signals up to global sign. Additionally, we present the first uniqueness result for sampled wavelet phase retrieval in which the underlying wavelets are allowed to be complex-valued and we present a uniqueness result for phase retrieval from sampled Cauchy wavelet transform measurements.

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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