Accurate Refraction Correction—Assisted Bathymetric Inversion Using ICESat-2 and Multispectral Data
Shallow-water depth information is essential for ship navigation and fishery farming. However, the accurate acquisition of shallow-water depth has been a challenge for marine mapping. Combining Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) bathymetry data with multispectral data, satellite-d...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-10-01
|
| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/13/21/4355 |
| _version_ | 1827677982360076288 |
|---|---|
| author | Changda Liu Jiawei Qi Jie Li Qiuhua Tang Wenxue Xu Xinghua Zhou Wenjun Meng |
| author_facet | Changda Liu Jiawei Qi Jie Li Qiuhua Tang Wenxue Xu Xinghua Zhou Wenjun Meng |
| author_sort | Changda Liu |
| collection | DOAJ |
| description | Shallow-water depth information is essential for ship navigation and fishery farming. However, the accurate acquisition of shallow-water depth has been a challenge for marine mapping. Combining Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) bathymetry data with multispectral data, satellite-derived bathymetry is a promising solution through which to obtain bathymetric information quickly and accurately. This study proposes a photon refraction correction method considering sea-surface undulations to address errors in the underwater photons obtained by the ICESat-2. First, the instantaneous sea surface and beam emission angle are integrated to determine the sea-surface incidence angle. Next, the distance of photon propagation in water is determined using sea-surface undulation and Snell’s law. Finally, position correction is performed through geometric relationships. The corrected photons were combined with the multispectral data for bathymetric inversion, and a bathymetric map of the Yongle Atoll area was obtained. A bathymetric chart was created using the corrected photons and the multispectral data in the Yongle Atoll. Comparing the results of different refraction correction methods with the data measured shows that the refraction correction method proposed in this paper can effectively correct bathymetry errors: the root mean square error is 1.48 m and the R2 is 0.86. |
| first_indexed | 2024-03-10T05:54:16Z |
| format | Article |
| id | doaj.art-d65d0258f87b4df18818b59eaea00c64 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T05:54:16Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-d65d0258f87b4df18818b59eaea00c642023-11-22T21:32:16ZengMDPI AGRemote Sensing2072-42922021-10-011321435510.3390/rs13214355Accurate Refraction Correction—Assisted Bathymetric Inversion Using ICESat-2 and Multispectral DataChangda Liu0Jiawei Qi1Jie Li2Qiuhua Tang3Wenxue Xu4Xinghua Zhou5Wenjun Meng6The First Institute of Oceanography, MNR, Qingdao 266061, ChinaCollege of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao 266590, ChinaThe First Institute of Oceanography, MNR, Qingdao 266061, ChinaThe First Institute of Oceanography, MNR, Qingdao 266061, ChinaThe First Institute of Oceanography, MNR, Qingdao 266061, ChinaThe First Institute of Oceanography, MNR, Qingdao 266061, ChinaThe First Institute of Oceanography, MNR, Qingdao 266061, ChinaShallow-water depth information is essential for ship navigation and fishery farming. However, the accurate acquisition of shallow-water depth has been a challenge for marine mapping. Combining Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) bathymetry data with multispectral data, satellite-derived bathymetry is a promising solution through which to obtain bathymetric information quickly and accurately. This study proposes a photon refraction correction method considering sea-surface undulations to address errors in the underwater photons obtained by the ICESat-2. First, the instantaneous sea surface and beam emission angle are integrated to determine the sea-surface incidence angle. Next, the distance of photon propagation in water is determined using sea-surface undulation and Snell’s law. Finally, position correction is performed through geometric relationships. The corrected photons were combined with the multispectral data for bathymetric inversion, and a bathymetric map of the Yongle Atoll area was obtained. A bathymetric chart was created using the corrected photons and the multispectral data in the Yongle Atoll. Comparing the results of different refraction correction methods with the data measured shows that the refraction correction method proposed in this paper can effectively correct bathymetry errors: the root mean square error is 1.48 m and the R2 is 0.86.https://www.mdpi.com/2072-4292/13/21/4355ICESat-2multispectral datarefraction correctionsea-surface undulationssatellite-derived bathymetry |
| spellingShingle | Changda Liu Jiawei Qi Jie Li Qiuhua Tang Wenxue Xu Xinghua Zhou Wenjun Meng Accurate Refraction Correction—Assisted Bathymetric Inversion Using ICESat-2 and Multispectral Data Remote Sensing ICESat-2 multispectral data refraction correction sea-surface undulations satellite-derived bathymetry |
| title | Accurate Refraction Correction—Assisted Bathymetric Inversion Using ICESat-2 and Multispectral Data |
| title_full | Accurate Refraction Correction—Assisted Bathymetric Inversion Using ICESat-2 and Multispectral Data |
| title_fullStr | Accurate Refraction Correction—Assisted Bathymetric Inversion Using ICESat-2 and Multispectral Data |
| title_full_unstemmed | Accurate Refraction Correction—Assisted Bathymetric Inversion Using ICESat-2 and Multispectral Data |
| title_short | Accurate Refraction Correction—Assisted Bathymetric Inversion Using ICESat-2 and Multispectral Data |
| title_sort | accurate refraction correction assisted bathymetric inversion using icesat 2 and multispectral data |
| topic | ICESat-2 multispectral data refraction correction sea-surface undulations satellite-derived bathymetry |
| url | https://www.mdpi.com/2072-4292/13/21/4355 |
| work_keys_str_mv | AT changdaliu accuraterefractioncorrectionassistedbathymetricinversionusingicesat2andmultispectraldata AT jiaweiqi accuraterefractioncorrectionassistedbathymetricinversionusingicesat2andmultispectraldata AT jieli accuraterefractioncorrectionassistedbathymetricinversionusingicesat2andmultispectraldata AT qiuhuatang accuraterefractioncorrectionassistedbathymetricinversionusingicesat2andmultispectraldata AT wenxuexu accuraterefractioncorrectionassistedbathymetricinversionusingicesat2andmultispectraldata AT xinghuazhou accuraterefractioncorrectionassistedbathymetricinversionusingicesat2andmultispectraldata AT wenjunmeng accuraterefractioncorrectionassistedbathymetricinversionusingicesat2andmultispectraldata |