First Retrieval of Sea Surface Currents Using L-Band SAR in Satellite Formation
The inversion of ocean currents is a significant challenge and area of interest in ocean remote sensing. Spaceborne along-track interferometric synthetic aperture radar (ATI-SAR) has several advantages and benefits, including precise observations, extensive swath coverage, and high resolution. Howev...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/17/1/131 |
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| author | Bo Pan Xinzhe Yuan Tao Li Tao Lai Xiaoqing Wang Chengji Xu Haifeng Huang |
| author_facet | Bo Pan Xinzhe Yuan Tao Li Tao Lai Xiaoqing Wang Chengji Xu Haifeng Huang |
| author_sort | Bo Pan |
| collection | DOAJ |
| description | The inversion of ocean currents is a significant challenge and area of interest in ocean remote sensing. Spaceborne along-track interferometric synthetic aperture radar (ATI-SAR) has several advantages and benefits, including precise observations, extensive swath coverage, and high resolution. However, a limited number of spaceborne interferometric synthetic aperture radar (InSAR) systems are operating in orbit. Among these, the along-track baseline length is generally suboptimal, resulting in low inversion accuracy and difficulty in achieving operational stability. One of the approaches involves employing lower-frequency bands such as the L band to increase the baseline length to achieve the optimal baseline for a satellite formation. The LuTan-1 mission, the world’s first L-band distributed spaceborne InSAR system, was successfully launched on 27 February 2022. L-band distributed formation operation provides insight into the development of future spaceborne ATI systems with application to new exploration regimes and under optimal baseline conditions. There are two novel aspects of this investigation: (1) We described the ocean current inversion process and results based on LuTan-1 SAR data for the first time. (2) A cross-track baseline component phase removal method based on parameterized modeling was proposed for distributed InSAR systems. Both qualitative and quantitative comparisons validated the effectiveness and accuracy of the inversion results. |
| format | Article |
| id | doaj-art-5f81d76d83344cce9a73905e697c2478 |
| institution | Kabale University |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-5f81d76d83344cce9a73905e697c24782025-01-10T13:20:19ZengMDPI AGRemote Sensing2072-42922025-01-0117113110.3390/rs17010131First Retrieval of Sea Surface Currents Using L-Band SAR in Satellite FormationBo Pan0Xinzhe Yuan1Tao Li2Tao Lai3Xiaoqing Wang4Chengji Xu5Haifeng Huang6School of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen 518107, ChinaNational Satellite Ocean Application Service, Beijing 100081, ChinaLand Satellite Remote Sensing Application Center, Beijing 100048, ChinaSchool of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen 518107, ChinaSchool of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen 518107, ChinaSchool of Systems Science and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaSchool of Electronic and Communication Engineering, Sun Yat-sen University, Shenzhen 518107, ChinaThe inversion of ocean currents is a significant challenge and area of interest in ocean remote sensing. Spaceborne along-track interferometric synthetic aperture radar (ATI-SAR) has several advantages and benefits, including precise observations, extensive swath coverage, and high resolution. However, a limited number of spaceborne interferometric synthetic aperture radar (InSAR) systems are operating in orbit. Among these, the along-track baseline length is generally suboptimal, resulting in low inversion accuracy and difficulty in achieving operational stability. One of the approaches involves employing lower-frequency bands such as the L band to increase the baseline length to achieve the optimal baseline for a satellite formation. The LuTan-1 mission, the world’s first L-band distributed spaceborne InSAR system, was successfully launched on 27 February 2022. L-band distributed formation operation provides insight into the development of future spaceborne ATI systems with application to new exploration regimes and under optimal baseline conditions. There are two novel aspects of this investigation: (1) We described the ocean current inversion process and results based on LuTan-1 SAR data for the first time. (2) A cross-track baseline component phase removal method based on parameterized modeling was proposed for distributed InSAR systems. Both qualitative and quantitative comparisons validated the effectiveness and accuracy of the inversion results.https://www.mdpi.com/2072-4292/17/1/131along-track interferometry (ATI)LuTan-1sea surface currentssynthetic aperture radar (SAR) |
| spellingShingle | Bo Pan Xinzhe Yuan Tao Li Tao Lai Xiaoqing Wang Chengji Xu Haifeng Huang First Retrieval of Sea Surface Currents Using L-Band SAR in Satellite Formation Remote Sensing along-track interferometry (ATI) LuTan-1 sea surface currents synthetic aperture radar (SAR) |
| title | First Retrieval of Sea Surface Currents Using L-Band SAR in Satellite Formation |
| title_full | First Retrieval of Sea Surface Currents Using L-Band SAR in Satellite Formation |
| title_fullStr | First Retrieval of Sea Surface Currents Using L-Band SAR in Satellite Formation |
| title_full_unstemmed | First Retrieval of Sea Surface Currents Using L-Band SAR in Satellite Formation |
| title_short | First Retrieval of Sea Surface Currents Using L-Band SAR in Satellite Formation |
| title_sort | first retrieval of sea surface currents using l band sar in satellite formation |
| topic | along-track interferometry (ATI) LuTan-1 sea surface currents synthetic aperture radar (SAR) |
| url | https://www.mdpi.com/2072-4292/17/1/131 |
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