Method for extracting ship shaft rate features by fusing acoustic and magnetic field
Abstract To address the challenge of detecting small underwater targets, this paper proposes a detection method based on the fusion of acoustic and magnetic fields. The shaft-rate acoustic field and shaft-rate magnetic field of a vessel are both closely related to the rotation of its propeller and c...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-12008-4 |
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| _version_ | 1849344759001251840 |
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| author | Taotao Xie Qing Ji Peng Yu Jiawei Zhang |
| author_facet | Taotao Xie Qing Ji Peng Yu Jiawei Zhang |
| author_sort | Taotao Xie |
| collection | DOAJ |
| description | Abstract To address the challenge of detecting small underwater targets, this paper proposes a detection method based on the fusion of acoustic and magnetic fields. The shaft-rate acoustic field and shaft-rate magnetic field of a vessel are both closely related to the rotation of its propeller and contain rich target characteristic information. Using the vessel’s shaft-rate information as a key criterion, this paper proposes to fuse the acoustic and magnetic fields to extract the shaft-rate features of the vessel. Specifically, the line spectra of the shaft-rate acoustic and magnetic fields are first extracted using DEMON spectral analysis and power spectral analysis methods, respectively. Subsequently, the extracted line spectra are fused and purified. Finally, the shaft-rate features are extracted based on the greatest common divisor (GCD) method. To verify the effectiveness of the proposed method, real-measured acoustic and magnetic data from multiple vessels were used for experimental validation. The results show that there is a significant frequency correspondence between the line spectra of the shaft-rate acoustic and magnetic fields of the same vessel. By fusing the shaft-rate related line spectra of the acoustic and magnetic fields, the problem of line-spectrum loss in a single physical field, caused by environmental noise and other factors, can be effectively compensated. Moreover, after fusing the acoustic and magnetic fields, the accuracy and stability of the vessel’s shaft-rate estimation are significantly better than those of a single physical field, allowing for more reliable extraction of shaft-rate information and enhancing the basis for target identification. |
| format | Article |
| id | doaj-art-cbae58a43e5048f2ba46e2dca22a1878 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-cbae58a43e5048f2ba46e2dca22a18782025-08-20T03:42:35ZengNature PortfolioScientific Reports2045-23222025-07-0115111510.1038/s41598-025-12008-4Method for extracting ship shaft rate features by fusing acoustic and magnetic fieldTaotao Xie0Qing Ji1Peng Yu2Jiawei Zhang3Naval University of EngineeringNaval University of EngineeringNaval Petty Officer AcademyNaval University of EngineeringAbstract To address the challenge of detecting small underwater targets, this paper proposes a detection method based on the fusion of acoustic and magnetic fields. The shaft-rate acoustic field and shaft-rate magnetic field of a vessel are both closely related to the rotation of its propeller and contain rich target characteristic information. Using the vessel’s shaft-rate information as a key criterion, this paper proposes to fuse the acoustic and magnetic fields to extract the shaft-rate features of the vessel. Specifically, the line spectra of the shaft-rate acoustic and magnetic fields are first extracted using DEMON spectral analysis and power spectral analysis methods, respectively. Subsequently, the extracted line spectra are fused and purified. Finally, the shaft-rate features are extracted based on the greatest common divisor (GCD) method. To verify the effectiveness of the proposed method, real-measured acoustic and magnetic data from multiple vessels were used for experimental validation. The results show that there is a significant frequency correspondence between the line spectra of the shaft-rate acoustic and magnetic fields of the same vessel. By fusing the shaft-rate related line spectra of the acoustic and magnetic fields, the problem of line-spectrum loss in a single physical field, caused by environmental noise and other factors, can be effectively compensated. Moreover, after fusing the acoustic and magnetic fields, the accuracy and stability of the vessel’s shaft-rate estimation are significantly better than those of a single physical field, allowing for more reliable extraction of shaft-rate information and enhancing the basis for target identification.https://doi.org/10.1038/s41598-025-12008-4Ship’s acoustic fieldShip’s magnetic fieldShaft-rate featureFused extraction |
| spellingShingle | Taotao Xie Qing Ji Peng Yu Jiawei Zhang Method for extracting ship shaft rate features by fusing acoustic and magnetic field Scientific Reports Ship’s acoustic field Ship’s magnetic field Shaft-rate feature Fused extraction |
| title | Method for extracting ship shaft rate features by fusing acoustic and magnetic field |
| title_full | Method for extracting ship shaft rate features by fusing acoustic and magnetic field |
| title_fullStr | Method for extracting ship shaft rate features by fusing acoustic and magnetic field |
| title_full_unstemmed | Method for extracting ship shaft rate features by fusing acoustic and magnetic field |
| title_short | Method for extracting ship shaft rate features by fusing acoustic and magnetic field |
| title_sort | method for extracting ship shaft rate features by fusing acoustic and magnetic field |
| topic | Ship’s acoustic field Ship’s magnetic field Shaft-rate feature Fused extraction |
| url | https://doi.org/10.1038/s41598-025-12008-4 |
| work_keys_str_mv | AT taotaoxie methodforextractingshipshaftratefeaturesbyfusingacousticandmagneticfield AT qingji methodforextractingshipshaftratefeaturesbyfusingacousticandmagneticfield AT pengyu methodforextractingshipshaftratefeaturesbyfusingacousticandmagneticfield AT jiaweizhang methodforextractingshipshaftratefeaturesbyfusingacousticandmagneticfield |