Wavenumber-Domain Joint Estimation of Rotation Parameters and Scene Center Offset for Large-Angle ISAR Cross-Range Scaling
While the wavenumber-domain approach enables large-angle inverse synthetic aperture radar (ISAR) cross-range scaling, its practical application remains constrained by the target’s non-uniform rotation and scene center offset (SCO). In response to this issue, this paper introduces a novel large-angle...
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| Language: | English |
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MDPI AG
2025-05-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/11/3444 |
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| author | Bakun Zhu Weigang Zhu Hongfeng Pang Chenxuan Li Lei Qui Jinhai Yan Fanyin Ma Yijia Liu |
| author_facet | Bakun Zhu Weigang Zhu Hongfeng Pang Chenxuan Li Lei Qui Jinhai Yan Fanyin Ma Yijia Liu |
| author_sort | Bakun Zhu |
| collection | DOAJ |
| description | While the wavenumber-domain approach enables large-angle inverse synthetic aperture radar (ISAR) cross-range scaling, its practical application remains constrained by the target’s non-uniform rotation and scene center offset (SCO). In response to this issue, this paper introduces a novel large-angle ISAR cross-range scaling method through a joint estimation method based on the wavenumber domain. A non-uniform rotational wavenumber-domain signal model with SCO is developed. Utilizing this model and the sensitivity of wavenumber-domain imaging to SCO, a joint estimation algorithm that combines particle swarm optimization (PSO) and image entropy evaluation is proposed, achieving accurate parameter estimation. Leveraging the estimated parameters, the range and cross-range scaling factors in the wavenumber-domain imaging are derived, facilitating ISAR cross-range scaling with higher accuracy than the traditional method. The effectiveness and robustness of the proposed method are validated under various conditions, through scattering point and electromagnetic computing simulation. |
| format | Article |
| id | doaj-art-0f3263f0decf42cba8cb158dd4b4c620 |
| institution | OA Journals |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-0f3263f0decf42cba8cb158dd4b4c6202025-08-20T02:23:07ZengMDPI AGSensors1424-82202025-05-012511344410.3390/s25113444Wavenumber-Domain Joint Estimation of Rotation Parameters and Scene Center Offset for Large-Angle ISAR Cross-Range ScalingBakun Zhu0Weigang Zhu1Hongfeng Pang2Chenxuan Li3Lei Qui4Jinhai Yan5Fanyin Ma6Yijia Liu7Department of Electronic and Optical Engineering, Space Engineering University, Beijing 101416, ChinaDepartment of Electronic and Optical Engineering, Space Engineering University, Beijing 101416, ChinaDepartment of Electronic and Optical Engineering, Space Engineering University, Beijing 101416, ChinaBeijing Aerospace Command and Control Center, Beijing 100094, ChinaDepartment of Electronic and Optical Engineering, Space Engineering University, Beijing 101416, ChinaDepartment of Electronic and Optical Engineering, Space Engineering University, Beijing 101416, ChinaDepartment of Electronic and Optical Engineering, Space Engineering University, Beijing 101416, ChinaDepartment of Electronic and Optical Engineering, Space Engineering University, Beijing 101416, ChinaWhile the wavenumber-domain approach enables large-angle inverse synthetic aperture radar (ISAR) cross-range scaling, its practical application remains constrained by the target’s non-uniform rotation and scene center offset (SCO). In response to this issue, this paper introduces a novel large-angle ISAR cross-range scaling method through a joint estimation method based on the wavenumber domain. A non-uniform rotational wavenumber-domain signal model with SCO is developed. Utilizing this model and the sensitivity of wavenumber-domain imaging to SCO, a joint estimation algorithm that combines particle swarm optimization (PSO) and image entropy evaluation is proposed, achieving accurate parameter estimation. Leveraging the estimated parameters, the range and cross-range scaling factors in the wavenumber-domain imaging are derived, facilitating ISAR cross-range scaling with higher accuracy than the traditional method. The effectiveness and robustness of the proposed method are validated under various conditions, through scattering point and electromagnetic computing simulation.https://www.mdpi.com/1424-8220/25/11/3444inverse synthetic aperture radar (ISAR) imagingcross-range scalingnon-uniform rotationwavenumber domainscene center offset (SCO) |
| spellingShingle | Bakun Zhu Weigang Zhu Hongfeng Pang Chenxuan Li Lei Qui Jinhai Yan Fanyin Ma Yijia Liu Wavenumber-Domain Joint Estimation of Rotation Parameters and Scene Center Offset for Large-Angle ISAR Cross-Range Scaling Sensors inverse synthetic aperture radar (ISAR) imaging cross-range scaling non-uniform rotation wavenumber domain scene center offset (SCO) |
| title | Wavenumber-Domain Joint Estimation of Rotation Parameters and Scene Center Offset for Large-Angle ISAR Cross-Range Scaling |
| title_full | Wavenumber-Domain Joint Estimation of Rotation Parameters and Scene Center Offset for Large-Angle ISAR Cross-Range Scaling |
| title_fullStr | Wavenumber-Domain Joint Estimation of Rotation Parameters and Scene Center Offset for Large-Angle ISAR Cross-Range Scaling |
| title_full_unstemmed | Wavenumber-Domain Joint Estimation of Rotation Parameters and Scene Center Offset for Large-Angle ISAR Cross-Range Scaling |
| title_short | Wavenumber-Domain Joint Estimation of Rotation Parameters and Scene Center Offset for Large-Angle ISAR Cross-Range Scaling |
| title_sort | wavenumber domain joint estimation of rotation parameters and scene center offset for large angle isar cross range scaling |
| topic | inverse synthetic aperture radar (ISAR) imaging cross-range scaling non-uniform rotation wavenumber domain scene center offset (SCO) |
| url | https://www.mdpi.com/1424-8220/25/11/3444 |
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