Estimates on the stability constant for the truncated Fourier transform
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866910519850434560 |
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| author | Karamehmedović, Mirza Carøe, Martin Sæbye Triki, Faouzi |
| author_facet | Karamehmedović, Mirza Carøe, Martin Sæbye Triki, Faouzi |
| contents | In this paper we are interested in the inverse problem of recovering a compact supported function from its truncated Fourier transform. We derive new Lipschitz stability estimates for the inversion in terms of the truncation parameter. The obtained results show that the Lipschitz constant is of order one when the truncation parameter is larger than the spatial frequency of the function, and it grows exponentially when the truncation parameter tends to zero. Finally, we present some numerical examples of reconstruction of a compactly supported function from its noisy truncated Fourier transform. The numerical illustrations validate our theoretical results. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_06656 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Estimates on the stability constant for the truncated Fourier transform Karamehmedović, Mirza Carøe, Martin Sæbye Triki, Faouzi Numerical Analysis Analysis of PDEs 45Q05, 43A50 In this paper we are interested in the inverse problem of recovering a compact supported function from its truncated Fourier transform. We derive new Lipschitz stability estimates for the inversion in terms of the truncation parameter. The obtained results show that the Lipschitz constant is of order one when the truncation parameter is larger than the spatial frequency of the function, and it grows exponentially when the truncation parameter tends to zero. Finally, we present some numerical examples of reconstruction of a compactly supported function from its noisy truncated Fourier transform. The numerical illustrations validate our theoretical results. |
| title | Estimates on the stability constant for the truncated Fourier transform |
| topic | Numerical Analysis Analysis of PDEs 45Q05, 43A50 |
| url | https://arxiv.org/abs/2407.06656 |