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Mapping, and Geoinformation","award":["41830110"],"award-info":[{"award-number":["41830110"]}]},{"name":"Surveying and Mapping Basic Research Program of the National Administration of Surveying, Mapping, and Geoinformation","award":["42374099"],"award-info":[{"award-number":["42374099"]}]},{"name":"Surveying and Mapping Basic Research Program of the National Administration of Surveying, Mapping, and Geoinformation","award":["42004008"],"award-info":[{"award-number":["42004008"]}]},{"name":"Surveying and Mapping Basic Research Program of the National Administration of Surveying, Mapping, and Geoinformation","award":["2021-key-14"],"award-info":[{"award-number":["2021-key-14"]}]},{"name":"Surveying and Mapping Basic Research Program of the National Administration of Surveying, Mapping, and Geoinformation","award":["2021-major-08"],"award-info":[{"award-number":["2021-major-08"]}]},{"name":"Surveying and Mapping Basic Research Program of the National Administration of Surveying, Mapping, and Geoinformation","award":["13-01-05"],"award-info":[{"award-number":["13-01-05"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Selecting a representative optical deep-water area is crucial for accurate satellite-derived bathymetry (SDB) based on semi-theoretical and semi-empirical models. This study proposed a deep-water area selection method where potential areas were identified by integrating remote sensing imagery with existing global bathymetric data. Specifically, the effects of sun glint correction for deep-water areas on SDB estimation were investigated. The results indicated that the computed SDB had significant instabilities when different optical deep-water areas without sun glint correction were used for model training. In comparison, when sun glint correction was applied, the SDB results from different deep-water areas had greater consistency. We generated bathymetric maps for the Langhua Reef in the South China Sea and Buck Island near the U.S. Virgin Islands using Sentinel-2 multispectral images and 70% of the Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) bathymetry data. Additionally, 30% of the ICESat-2 bathymetry data and NOAA NGS Topo-bathy Lidar data served as the validation data to evaluate the qualities of the computed SDB, respectively. The results showed that the average quality of the SDB significantly improved with sun glint correction application by a magnitude of 0.60 m in terms of the root mean square error (RMSE) for two study areas. Moreover, an evaluation of the SDB data computed from different deep-water areas showed more consistent results, with RMSEs of approximately 0.4 and 1.4 m over the Langhua Reef and Buck Island, respectively. These values were consistently below 9% of the maximum depth. In addition, the effects of the optical image selection on SDB inversion were investigated, and the SDB calculated from the images over different time periods demonstrated similar results after applying sun glint correction. The results showed that this approach for optical deep-water area selection and correction could be used for improving the SDB, particularly in challenging scenarios, thereby enhancing the accuracy and robustness of SDB.<\/jats:p>","DOI":"10.3390\/rs15225406","type":"journal-article","created":{"date-parts":[[2023,11,17]],"date-time":"2023-11-17T10:10:06Z","timestamp":1700215806000},"page":"5406","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Methods to Improve the Accuracy and Robustness of Satellite-Derived Bathymetry through Processing of Optically Deep Waters"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9097-5618","authenticated-orcid":false,"given":"Dongzhen","family":"Jia","sequence":"first","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-2165-314X","authenticated-orcid":false,"given":"Yu","family":"Li","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5262-1007","authenticated-orcid":false,"given":"Xiufeng","family":"He","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China"}]},{"given":"Zhixiang","family":"Yang","sequence":"additional","affiliation":[{"name":"China Railway Water Conservancy & Hydropower Planning and Design Group, Nanchang 330029, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8026-6105","authenticated-orcid":false,"given":"Yihao","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China"}]},{"given":"Taixia","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9912-2347","authenticated-orcid":false,"given":"Nan","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,11,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"111619","DOI":"10.1016\/j.rse.2019.111619","article-title":"Remote sensing of shallow waters\u2014A 50 year retrospective and future directions","volume":"240","author":"Kutser","year":"2020","journal-title":"Remote Sens. 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