Design and Application of Reflectance Measurement System for Sea Bottom in Optically Shallow Water
文献类型：期刊论文
| 作者 | Zeng Kai1; Xu Zhan-tang; Yang Yue-zhong; Zhang Yu1,3; Zhou Wen3; Li Cai; Huang Hui4 |
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2020 |
| 卷号 | 40期号:2页码:579 |
| 关键词 | Optically shallow water remote sensing Bottom reflectance Spectral separability Substrate classification Hyperspectral |
| ISSN号 | 1000-0593 |
| 英文摘要 | The spectral reflectance of the sea bottom plays an important role in radiative transfer signal of optically shallow water, affecting the spectral characteristics of water-leaving radiance in sea surface. Therefore, the precise information of the substrate is particularly significant in the study of the coastal remote sensing. In order to provide an accurate and convenient on-site information extraction of optically shallow water bottom, a set of sea bottom reflectance measurement system was designed, which is characterized by designing a reference whiteboard that can be freely stretched and rotated in order to eliminate the influence of the absorption attenuation of water between the probe and the target. And the design of the dual optical path for simultaneous measurement solved the interference of the spatial and temporal variability of water optical properties. Optical in-situ bottom reflectance of various substrates include corals, seagrass, sediment and beach collected in Sanya Coral Reefs Reserve during September 3-8, 2018 were used to study the feasibility of the system. As expected, the various types of substrate have distinct spectral separability. The spectral reflectance feature of the sand bottom and onshore beach are different over the range 580 similar to 700 nm, which suggests that the absorption and scattering of water and the presence of microalgae strongly affect the measurement of under water radiation. The difference between seagrass and coral is obvious that there is positive reflectance feature at 540 similar to 600 nm of seagrass, whereas the typical characteristic of coral is that there are three positive features around 575, 600 and 650 nm. In addition, the three carbonate substrates of coral, sand bottom and sandy beach have reflection peaks at 395, 430, 490 and 520 nm, and a small absorption peak at 485 and 585 nm, while seagrass has an absorption peak at 395, 430, 490 and 520 nm, a reflection peak at 485 and 585 nm. The above data results laid the foundation for the future extraction of benthic composition information, and also confirmed the reliability and real validity of the system design. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18348]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Southern Marine Sci & Engn Guangdong Lab, Guangzhou 511458, Peoples R China 2.Chinese Acad Sci, Natl Expt Stn Trop Marine Biol, Sanya 572000, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangdong Key Lab Ocean Remote Sensing, Guangzhou 510301, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng Kai,Xu Zhan-tang,Yang Yue-zhong,et al. Design and Application of Reflectance Measurement System for Sea Bottom in Optically Shallow Water[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2020,40(2):579, 585. |
| APA | Zeng Kai.,Xu Zhan-tang.,Yang Yue-zhong.,Zhang Yu.,Zhou Wen.,...&Huang Hui.(2020).Design and Application of Reflectance Measurement System for Sea Bottom in Optically Shallow Water.SPECTROSCOPY AND SPECTRAL ANALYSIS,40(2),579. |
| MLA | Zeng Kai,et al."Design and Application of Reflectance Measurement System for Sea Bottom in Optically Shallow Water".SPECTROSCOPY AND SPECTRAL ANALYSIS 40.2(2020):579. |
入库方式： OAI收割
来源：南海海洋研究所
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