Scattering Properties of Non-Gaussian Ocean Surface with the SSA Model Applied to GNSS-R
Global Navigation Satellite System Reflectometry (GNSS-R) is an emerging earth observation method for remote sensing of feature parameters using reflected signals from navigation satellites, and is a purely specular bistatic forward scattering observation means with special right-handed circular pol...
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| Format: | Article |
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MDPI AG
2023-07-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/15/14/3526 |
| _version_ | 1797587596781551616 |
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| author | Weichen Sun Xiaochen Wang Bing Han Dadi Meng Wei Wan |
| author_facet | Weichen Sun Xiaochen Wang Bing Han Dadi Meng Wei Wan |
| author_sort | Weichen Sun |
| collection | DOAJ |
| description | Global Navigation Satellite System Reflectometry (GNSS-R) is an emerging earth observation method for remote sensing of feature parameters using reflected signals from navigation satellites, and is a purely specular bistatic forward scattering observation means with special right-handed circular polarization incident wave. In this paper, the small-slope approximation model of non-Gaussian sea surface is used as the basis to construct the scattering model for the observation geometry of GNSS-R as well as the L-band characteristics, and the fully-polarization normalized bistatic radar scattering cross section (NBRCS) are simulated by the method of polarization synthesis to analyze the scattering characteristics under different wind speeds and directions on the ocean surface, which highlights the variation of NBRCS with wind direction, and the scattering modeling accuracy is improved by comparing with the data of CYGNSS. In addition, we adopt the observation geometry deviating from purely specular geometry, discuss the scattering azimuth angle, scattering influence, and the relative relationship between different polarizations of the scattering angle under the non-specular geometry. |
| first_indexed | 2024-03-11T00:42:10Z |
| format | Article |
| id | doaj.art-8e6d2949e6dc458680a9a5b7b716d64c |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-11T00:42:10Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-8e6d2949e6dc458680a9a5b7b716d64c2023-11-18T21:12:02ZengMDPI AGRemote Sensing2072-42922023-07-011514352610.3390/rs15143526Scattering Properties of Non-Gaussian Ocean Surface with the SSA Model Applied to GNSS-RWeichen Sun0Xiaochen Wang1Bing Han2Dadi Meng3Wei Wan4Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaInstitute of Remote Sensing and GIS, School of Earth and Space Sciences, Peking University, Beijing 100871, ChinaGlobal Navigation Satellite System Reflectometry (GNSS-R) is an emerging earth observation method for remote sensing of feature parameters using reflected signals from navigation satellites, and is a purely specular bistatic forward scattering observation means with special right-handed circular polarization incident wave. In this paper, the small-slope approximation model of non-Gaussian sea surface is used as the basis to construct the scattering model for the observation geometry of GNSS-R as well as the L-band characteristics, and the fully-polarization normalized bistatic radar scattering cross section (NBRCS) are simulated by the method of polarization synthesis to analyze the scattering characteristics under different wind speeds and directions on the ocean surface, which highlights the variation of NBRCS with wind direction, and the scattering modeling accuracy is improved by comparing with the data of CYGNSS. In addition, we adopt the observation geometry deviating from purely specular geometry, discuss the scattering azimuth angle, scattering influence, and the relative relationship between different polarizations of the scattering angle under the non-specular geometry.https://www.mdpi.com/2072-4292/15/14/3526non-Gaussian ocean surfacebistatic scatteringglobal navigation satellite system reflectometry (GNSS-R)ocean wind |
| spellingShingle | Weichen Sun Xiaochen Wang Bing Han Dadi Meng Wei Wan Scattering Properties of Non-Gaussian Ocean Surface with the SSA Model Applied to GNSS-R Remote Sensing non-Gaussian ocean surface bistatic scattering global navigation satellite system reflectometry (GNSS-R) ocean wind |
| title | Scattering Properties of Non-Gaussian Ocean Surface with the SSA Model Applied to GNSS-R |
| title_full | Scattering Properties of Non-Gaussian Ocean Surface with the SSA Model Applied to GNSS-R |
| title_fullStr | Scattering Properties of Non-Gaussian Ocean Surface with the SSA Model Applied to GNSS-R |
| title_full_unstemmed | Scattering Properties of Non-Gaussian Ocean Surface with the SSA Model Applied to GNSS-R |
| title_short | Scattering Properties of Non-Gaussian Ocean Surface with the SSA Model Applied to GNSS-R |
| title_sort | scattering properties of non gaussian ocean surface with the ssa model applied to gnss r |
| topic | non-Gaussian ocean surface bistatic scattering global navigation satellite system reflectometry (GNSS-R) ocean wind |
| url | https://www.mdpi.com/2072-4292/15/14/3526 |
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