A Simulation Method of Two-Dimensional Sea-Surface Current Field for Trajectory Crossing Spaceborne SAR
The trajectory-crossing method is an important and effective method for spaceborne SAR (synthetic aperture radar) to detect a two-dimensional current field. However, in practical applications, there are few spaceborne SAR data that meet the requirements of close acquisition time and overlapping traj...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/12/5900 |
| _version_ | 1797490365402447872 |
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| author | Yan Li Jinsong Chong Zongze Li |
| author_facet | Yan Li Jinsong Chong Zongze Li |
| author_sort | Yan Li |
| collection | DOAJ |
| description | The trajectory-crossing method is an important and effective method for spaceborne SAR (synthetic aperture radar) to detect a two-dimensional current field. However, in practical applications, there are few spaceborne SAR data that meet the requirements of close acquisition time and overlapping trajectories, which makes it difficult to comprehensively analyze the impact of different systems and environmental parameters on current measurement results from real data processing. With the proposal of a SAR constellation plan in the future, the data resources will be constantly enriched, and the trajectory-crossing method will be widely used. It is, thus, necessary to lay some theoretical foundation at present. A two-dimensional sea-surface-current-field simulation method for trajectory crossing spaceborne SAR is proposed in this paper. Based on the principles of the trajectory-crossing method, the proposed method can realize the simulation of two-dimensional sea-surface-current field under given spaceborne SAR system and environmental parameters. In this paper, the simulation process of this method is given, and the simulation experiment is performed. Compared with the current measurement results of SAR data, the simulation experiment shows that the current velocity error is less than 0.03 m/s and the direction error is less than 10 degrees, which proves the reliability of the proposed simulation method. The proposed method lays a foundation for analyzing the influence of various parameters in the application of the trajectory-crossing method. |
| first_indexed | 2024-03-10T00:31:57Z |
| format | Article |
| id | doaj.art-dc0e90bdb2c44f2da34cc4a8179885af |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T00:31:57Z |
| publishDate | 2022-06-01 |
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| spelling | doaj.art-dc0e90bdb2c44f2da34cc4a8179885af2023-11-23T15:24:16ZengMDPI AGApplied Sciences2076-34172022-06-011212590010.3390/app12125900A Simulation Method of Two-Dimensional Sea-Surface Current Field for Trajectory Crossing Spaceborne SARYan Li0Jinsong Chong1Zongze Li2National Key Lab of Microwave Imaging Technology, Beijing 100190, ChinaNational Key Lab of Microwave Imaging Technology, Beijing 100190, ChinaNational Key Lab of Microwave Imaging Technology, Beijing 100190, ChinaThe trajectory-crossing method is an important and effective method for spaceborne SAR (synthetic aperture radar) to detect a two-dimensional current field. However, in practical applications, there are few spaceborne SAR data that meet the requirements of close acquisition time and overlapping trajectories, which makes it difficult to comprehensively analyze the impact of different systems and environmental parameters on current measurement results from real data processing. With the proposal of a SAR constellation plan in the future, the data resources will be constantly enriched, and the trajectory-crossing method will be widely used. It is, thus, necessary to lay some theoretical foundation at present. A two-dimensional sea-surface-current-field simulation method for trajectory crossing spaceborne SAR is proposed in this paper. Based on the principles of the trajectory-crossing method, the proposed method can realize the simulation of two-dimensional sea-surface-current field under given spaceborne SAR system and environmental parameters. In this paper, the simulation process of this method is given, and the simulation experiment is performed. Compared with the current measurement results of SAR data, the simulation experiment shows that the current velocity error is less than 0.03 m/s and the direction error is less than 10 degrees, which proves the reliability of the proposed simulation method. The proposed method lays a foundation for analyzing the influence of various parameters in the application of the trajectory-crossing method.https://www.mdpi.com/2076-3417/12/12/5900synthetic aperture radartrajectory-crossing methodsea-surface currentsimulation analysis |
| spellingShingle | Yan Li Jinsong Chong Zongze Li A Simulation Method of Two-Dimensional Sea-Surface Current Field for Trajectory Crossing Spaceborne SAR Applied Sciences synthetic aperture radar trajectory-crossing method sea-surface current simulation analysis |
| title | A Simulation Method of Two-Dimensional Sea-Surface Current Field for Trajectory Crossing Spaceborne SAR |
| title_full | A Simulation Method of Two-Dimensional Sea-Surface Current Field for Trajectory Crossing Spaceborne SAR |
| title_fullStr | A Simulation Method of Two-Dimensional Sea-Surface Current Field for Trajectory Crossing Spaceborne SAR |
| title_full_unstemmed | A Simulation Method of Two-Dimensional Sea-Surface Current Field for Trajectory Crossing Spaceborne SAR |
| title_short | A Simulation Method of Two-Dimensional Sea-Surface Current Field for Trajectory Crossing Spaceborne SAR |
| title_sort | simulation method of two dimensional sea surface current field for trajectory crossing spaceborne sar |
| topic | synthetic aperture radar trajectory-crossing method sea-surface current simulation analysis |
| url | https://www.mdpi.com/2076-3417/12/12/5900 |
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