A Motion Compensation Method for Terahertz SAR Imaging with a Large Squint
Terahertz-band squint synthetic aperture radars (SARs) can obtain high-resolution images and have application potential in airborne radar systems. However, airborne radars usually have a large squint, which has led to traditional SAR algorithms no longer being applicable to airborne SARs. Additional...
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MDPI AG
2024-12-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/11/12/1187 |
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| author | Yuanfeng Li Qi Yang Xiaoqiang Hua Hongqiang Wang |
| author_facet | Yuanfeng Li Qi Yang Xiaoqiang Hua Hongqiang Wang |
| author_sort | Yuanfeng Li |
| collection | DOAJ |
| description | Terahertz-band squint synthetic aperture radars (SARs) can obtain high-resolution images and have application potential in airborne radar systems. However, airborne radars usually have a large squint, which has led to traditional SAR algorithms no longer being applicable to airborne SARs. Additionally, terahertz radar imaging systems are more susceptible to the error induced by the platform’s motion. This paper proposes a motion compensation method for terahertz SAR imaging with a large squint angle. First, the signal model of motion compensation is derived, and the processing flow of imaging and motion compensation is detailed. Second, some simulations and experiments are conducted, and the results are reported. The results indicate that the proposed method can effectively correct the motion errors, and the signal model and processing flow are verified. |
| format | Article |
| id | doaj-art-8fed6fd6130347e89ff29c1377df5924 |
| institution | DOAJ |
| issn | 2304-6732 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-8fed6fd6130347e89ff29c1377df59242025-08-20T02:39:41ZengMDPI AGPhotonics2304-67322024-12-011112118710.3390/photonics11121187A Motion Compensation Method for Terahertz SAR Imaging with a Large SquintYuanfeng Li0Qi Yang1Xiaoqiang Hua2Hongqiang Wang3The College of Electronic Science and Technology, University of Defense Technology, Changsha 410003, ChinaThe College of Electronic Science and Technology, University of Defense Technology, Changsha 410003, ChinaThe College of Electronic Science and Technology, University of Defense Technology, Changsha 410003, ChinaThe College of Electronic Science and Technology, University of Defense Technology, Changsha 410003, ChinaTerahertz-band squint synthetic aperture radars (SARs) can obtain high-resolution images and have application potential in airborne radar systems. However, airborne radars usually have a large squint, which has led to traditional SAR algorithms no longer being applicable to airborne SARs. Additionally, terahertz radar imaging systems are more susceptible to the error induced by the platform’s motion. This paper proposes a motion compensation method for terahertz SAR imaging with a large squint angle. First, the signal model of motion compensation is derived, and the processing flow of imaging and motion compensation is detailed. Second, some simulations and experiments are conducted, and the results are reported. The results indicate that the proposed method can effectively correct the motion errors, and the signal model and processing flow are verified.https://www.mdpi.com/2304-6732/11/12/1187synthetic aperture radarlarge squint viewing angleterahertzmotion compensation |
| spellingShingle | Yuanfeng Li Qi Yang Xiaoqiang Hua Hongqiang Wang A Motion Compensation Method for Terahertz SAR Imaging with a Large Squint Photonics synthetic aperture radar large squint viewing angle terahertz motion compensation |
| title | A Motion Compensation Method for Terahertz SAR Imaging with a Large Squint |
| title_full | A Motion Compensation Method for Terahertz SAR Imaging with a Large Squint |
| title_fullStr | A Motion Compensation Method for Terahertz SAR Imaging with a Large Squint |
| title_full_unstemmed | A Motion Compensation Method for Terahertz SAR Imaging with a Large Squint |
| title_short | A Motion Compensation Method for Terahertz SAR Imaging with a Large Squint |
| title_sort | motion compensation method for terahertz sar imaging with a large squint |
| topic | synthetic aperture radar large squint viewing angle terahertz motion compensation |
| url | https://www.mdpi.com/2304-6732/11/12/1187 |
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