A HRWS SAR Motion Compensation Method with Multichannel Phase Correction
The multichannel synthetic aperture radar (SAR) possesses the capability to acquire high-resolution, wide-swath SAR imagery, which has great potential for application. However, similar to traditional single-channel SAR systems, it suffers from imaging quality degradation due to motion errors. Many m...
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| Format: | Article |
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MDPI AG
2024-09-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/16/19/3544 |
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| author | Liming Zhou Minglong Deng Jing He Bing Wang Shengmiao Zhang Xuanyu Liu Shunjun Wei |
| author_facet | Liming Zhou Minglong Deng Jing He Bing Wang Shengmiao Zhang Xuanyu Liu Shunjun Wei |
| author_sort | Liming Zhou |
| collection | DOAJ |
| description | The multichannel synthetic aperture radar (SAR) possesses the capability to acquire high-resolution, wide-swath SAR imagery, which has great potential for application. However, similar to traditional single-channel SAR systems, it suffers from imaging quality degradation due to motion errors. Many motion compensation algorithms have been used to improve the quality of single-channel SAR images, while fewer studies have been conducted on multichannel SAR motion compensation methods. The sub-image motion compensation method utilizes the single channel motion errors to perform multichannel motion errors compensation, considering that multiple channels have the same phase errors. To improve the quality of multichannel SAR imaging when multiple channel motion errors are inconsistent, this paper proposes a motion compensation method with multichannel phase correction for HRWS SAR. First, the method derives the phase errors estimation model via maximum sharpness to simultaneously estimate multichannel phase. Then, it compensates for the motion errors of all channels during backprojection imaging. The inconsistent motion errors of multiple channels can be compensated by estimating the phase errors of all channels, improving the image quality. The channel phase errors can be corrected while compensating for the motion errors. Moreover, the experimental results of point targets and complex scenes validate the effectiveness of the proposed method. |
| format | Article |
| id | doaj-art-247d41dfb68f49db9128b5748bff9bdc |
| institution | OA Journals |
| issn | 2072-4292 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-247d41dfb68f49db9128b5748bff9bdc2025-08-20T01:47:34ZengMDPI AGRemote Sensing2072-42922024-09-011619354410.3390/rs16193544A HRWS SAR Motion Compensation Method with Multichannel Phase CorrectionLiming Zhou0Minglong Deng1Jing He2Bing Wang3Shengmiao Zhang4Xuanyu Liu5Shunjun Wei6National Key Laboratory of Electromagnetic Space Security, Chengdu 610036, ChinaNational Key Laboratory of Electromagnetic Space Security, Chengdu 610036, ChinaNational Key Laboratory of Electromagnetic Space Security, Chengdu 610036, ChinaNational Key Laboratory of Electromagnetic Space Security, Chengdu 610036, ChinaNational Key Laboratory of Electromagnetic Space Security, Chengdu 610036, ChinaNational Key Laboratory of Electromagnetic Space Security, Chengdu 610036, ChinaSchool of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, ChinaThe multichannel synthetic aperture radar (SAR) possesses the capability to acquire high-resolution, wide-swath SAR imagery, which has great potential for application. However, similar to traditional single-channel SAR systems, it suffers from imaging quality degradation due to motion errors. Many motion compensation algorithms have been used to improve the quality of single-channel SAR images, while fewer studies have been conducted on multichannel SAR motion compensation methods. The sub-image motion compensation method utilizes the single channel motion errors to perform multichannel motion errors compensation, considering that multiple channels have the same phase errors. To improve the quality of multichannel SAR imaging when multiple channel motion errors are inconsistent, this paper proposes a motion compensation method with multichannel phase correction for HRWS SAR. First, the method derives the phase errors estimation model via maximum sharpness to simultaneously estimate multichannel phase. Then, it compensates for the motion errors of all channels during backprojection imaging. The inconsistent motion errors of multiple channels can be compensated by estimating the phase errors of all channels, improving the image quality. The channel phase errors can be corrected while compensating for the motion errors. Moreover, the experimental results of point targets and complex scenes validate the effectiveness of the proposed method.https://www.mdpi.com/2072-4292/16/19/3544high-resolution wide-swath (HRWS)azimuth multichannelmotion compensationphase errors estimationsub-image reconstruction |
| spellingShingle | Liming Zhou Minglong Deng Jing He Bing Wang Shengmiao Zhang Xuanyu Liu Shunjun Wei A HRWS SAR Motion Compensation Method with Multichannel Phase Correction Remote Sensing high-resolution wide-swath (HRWS) azimuth multichannel motion compensation phase errors estimation sub-image reconstruction |
| title | A HRWS SAR Motion Compensation Method with Multichannel Phase Correction |
| title_full | A HRWS SAR Motion Compensation Method with Multichannel Phase Correction |
| title_fullStr | A HRWS SAR Motion Compensation Method with Multichannel Phase Correction |
| title_full_unstemmed | A HRWS SAR Motion Compensation Method with Multichannel Phase Correction |
| title_short | A HRWS SAR Motion Compensation Method with Multichannel Phase Correction |
| title_sort | hrws sar motion compensation method with multichannel phase correction |
| topic | high-resolution wide-swath (HRWS) azimuth multichannel motion compensation phase errors estimation sub-image reconstruction |
| url | https://www.mdpi.com/2072-4292/16/19/3544 |
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