Inverse source problem of the biharmonic equation from multi-frequency phaseless data
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866916081494392832 |
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| author | Chang, Yan Guo, Yukun Zhao, Yue |
| author_facet | Chang, Yan Guo, Yukun Zhao, Yue |
| contents | This work deals with an inverse source problem for the biharmonic wave equation. A two-stage numerical method is proposed to identify the unknown source from the multi-frequency phaseless data. In the first stage, we introduce some artificially auxiliary point sources to the inverse source system and establish a phase retrieval formula. Theoretically, we point out that the phase can be uniquely determined and estimate the stability of this phase retrieval approach. Once the phase information is retrieved, the Fourier method is adopted to reconstruct the source function from the phased multi-frequency data. The proposed method is easy-to-implement and there is no forward solver involved in the reconstruction. Numerical experiments are conducted to verify the performance of the proposed method. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_02769 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Inverse source problem of the biharmonic equation from multi-frequency phaseless data Chang, Yan Guo, Yukun Zhao, Yue Numerical Analysis 65N21, 35R30, 74J25 This work deals with an inverse source problem for the biharmonic wave equation. A two-stage numerical method is proposed to identify the unknown source from the multi-frequency phaseless data. In the first stage, we introduce some artificially auxiliary point sources to the inverse source system and establish a phase retrieval formula. Theoretically, we point out that the phase can be uniquely determined and estimate the stability of this phase retrieval approach. Once the phase information is retrieved, the Fourier method is adopted to reconstruct the source function from the phased multi-frequency data. The proposed method is easy-to-implement and there is no forward solver involved in the reconstruction. Numerical experiments are conducted to verify the performance of the proposed method. |
| title | Inverse source problem of the biharmonic equation from multi-frequency phaseless data |
| topic | Numerical Analysis 65N21, 35R30, 74J25 |
| url | https://arxiv.org/abs/2401.02769 |