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A simple and effective method for removing residual reflected skylight in above-water remote sensing reflectance measurements
http://hdl.handle.net/2241/0002001805
http://hdl.handle.net/2241/000200180524beea58-beb0-4bc7-8cde-523949cacd21
名前 / ファイル | ライセンス | アクション |
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ISPRS-JPRS_165.pdf (3 MB)
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Item type | Journal Article(1) | |||||||||
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公開日 | 2021-11-05 | |||||||||
タイトル | ||||||||||
言語 | en | |||||||||
タイトル | A simple and effective method for removing residual reflected skylight in above-water remote sensing reflectance measurements | |||||||||
言語 | ||||||||||
言語 | eng | |||||||||
資源タイプ | ||||||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||||||
タイプ | journal article | |||||||||
アクセス権 | ||||||||||
アクセス権 | open access | |||||||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
著者 |
Jiang, Dalin
× Jiang, Dalin
× 松下, 文経× Yang, Wei
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抄録 | ||||||||||
内容記述タイプ | Abstract | |||||||||
内容記述 | In situ remote sensing reflectance (Rrs) measured using the above-water approach usually suffers from residual reflected skylight (Δ), and thus its applicability is limited. In this study, we proposed a simple method, which only required the in situ Rrs spectrum itself as input, to further remove the Δ effects in the in situ Rrs spectrum. The performance of the proposed method was evaluated using both simulation data and in situ Rrs spectra measured using a radiance sensor with a black tube (Δ-free in situ Rrs). The results showed that the proposed method outperformed other existing methods and can be applied to various types of waters. For example, from the two simulation experiments, it was seen that the proposed method can provide accurate Rrs spectra with a mean absolute percentage error (MAPE) = 6% even if they are measured under various sky conditions and wind speeds (using Hydrolight) and can estimate accurate Δ values with MAPE = 5% (using a simple bio-optical model). From a comparison analysis using Δ-free in situ Rrs data, the proposed method also showed the best performance with the smallest MAPE of 45% (MAPE ranged from 52% to 260% for other existing methods). In addition, the proposed method can improve the quality of Rrs spectra collected under various sky conditions (clear, scattered clouds and overcast), with an increased proportion of higher quality assurance scores. Two showcases indicate that the Δ corrections should be carried out for all above water approach-measured Rrs spectra before they are applied to develop water quality estimation algorithms or to evaluate the performances of atmospheric correction algorithms. | |||||||||
言語 | en | |||||||||
書誌情報 |
en : ISPRS Journal of Photogrammetry and Remote Sensing 巻 165, p. 16-27, 発行日 2020-07 |
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ISSN | ||||||||||
収録物識別子タイプ | PISSN | |||||||||
収録物識別子 | 09242716 | |||||||||
書誌レコードID | ||||||||||
収録物識別子タイプ | NCID | |||||||||
収録物識別子 | AA10819878 | |||||||||
DOI | ||||||||||
関連タイプ | isVersionOf | |||||||||
識別子タイプ | DOI | |||||||||
関連識別子 | https://doi.org/10.1016/j.isprsjprs.2020.05.003 | |||||||||
権利 | ||||||||||
言語 | en | |||||||||
権利情報 | © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||||||
著者版フラグ | ||||||||||
値 | author | |||||||||
出版者 | ||||||||||
言語 | en | |||||||||
出版者 | Elsevier |