SAR Imaging of Swing Ships Based on Two-Dimensional Spatial Variance Correction
The ship on the sea has the phenomenon of swing under the combined action of sea waves, wind and its stability system in the case of synthetic aperture radar imaging, which makes it difficult to focus. In order to correct the two-dimensional spatial variance and accomplish the imaging of swing ship,...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9953526/ |
| _version_ | 1811185354345021440 |
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| author | Jindong Yu Chang Liu Ze Yu |
| author_facet | Jindong Yu Chang Liu Ze Yu |
| author_sort | Jindong Yu |
| collection | DOAJ |
| description | The ship on the sea has the phenomenon of swing under the combined action of sea waves, wind and its stability system in the case of synthetic aperture radar imaging, which makes it difficult to focus. In order to correct the two-dimensional spatial variance and accomplish the imaging of swing ship, this article proposes a new imaging algorithm based on spatial variant phase gradient autofocus (PGA). First, the entropy difference is used to determine the specific position of the ship. Then, the ship image is extracted and segmented by a variable-size segmentation strategy. PGA is used to focus each subimage, and a well-focused ship image is obtained. The results of simulation experiments and real data show that the algorithm has good focusing performance. |
| first_indexed | 2024-04-11T13:28:06Z |
| format | Article |
| id | doaj.art-a2e1e03beda34b19a9be0c45447705b0 |
| institution | Directory Open Access Journal |
| issn | 2151-1535 |
| language | English |
| last_indexed | 2024-04-11T13:28:06Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| spelling | doaj.art-a2e1e03beda34b19a9be0c45447705b02022-12-22T04:21:58ZengIEEEIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing2151-15352022-01-01159953996210.1109/JSTARS.2022.32225429953526SAR Imaging of Swing Ships Based on Two-Dimensional Spatial Variance CorrectionJindong Yu0https://orcid.org/0000-0001-8273-3387Chang Liu1https://orcid.org/0000-0002-3701-0232Ze Yu2https://orcid.org/0000-0002-0177-5057School of Electronics and Information Engineering, Beihang University, Beijing, ChinaSchool of Electronics and Information Engineering, Beihang University, Beijing, ChinaSchool of Electronics and Information Engineering, Beihang University, Beijing, ChinaThe ship on the sea has the phenomenon of swing under the combined action of sea waves, wind and its stability system in the case of synthetic aperture radar imaging, which makes it difficult to focus. In order to correct the two-dimensional spatial variance and accomplish the imaging of swing ship, this article proposes a new imaging algorithm based on spatial variant phase gradient autofocus (PGA). First, the entropy difference is used to determine the specific position of the ship. Then, the ship image is extracted and segmented by a variable-size segmentation strategy. PGA is used to focus each subimage, and a well-focused ship image is obtained. The results of simulation experiments and real data show that the algorithm has good focusing performance.https://ieeexplore.ieee.org/document/9953526/Phase gradient autofocus (PGA)ship swingsynthetic aperture radar (SAR)two-dimensional (2-D) spatial variance |
| spellingShingle | Jindong Yu Chang Liu Ze Yu SAR Imaging of Swing Ships Based on Two-Dimensional Spatial Variance Correction IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Phase gradient autofocus (PGA) ship swing synthetic aperture radar (SAR) two-dimensional (2-D) spatial variance |
| title | SAR Imaging of Swing Ships Based on Two-Dimensional Spatial Variance Correction |
| title_full | SAR Imaging of Swing Ships Based on Two-Dimensional Spatial Variance Correction |
| title_fullStr | SAR Imaging of Swing Ships Based on Two-Dimensional Spatial Variance Correction |
| title_full_unstemmed | SAR Imaging of Swing Ships Based on Two-Dimensional Spatial Variance Correction |
| title_short | SAR Imaging of Swing Ships Based on Two-Dimensional Spatial Variance Correction |
| title_sort | sar imaging of swing ships based on two dimensional spatial variance correction |
| topic | Phase gradient autofocus (PGA) ship swing synthetic aperture radar (SAR) two-dimensional (2-D) spatial variance |
| url | https://ieeexplore.ieee.org/document/9953526/ |
| work_keys_str_mv | AT jindongyu sarimagingofswingshipsbasedontwodimensionalspatialvariancecorrection AT changliu sarimagingofswingshipsbasedontwodimensionalspatialvariancecorrection AT zeyu sarimagingofswingshipsbasedontwodimensionalspatialvariancecorrection |