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首页> 外文期刊>Estuarine Coastal and Shelf Science >Simulation-based investigation of the generality of Lyzenga's multispectral bathymetry formula in Case-1 coral reef water
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Simulation-based investigation of the generality of Lyzenga's multispectral bathymetry formula in Case-1 coral reef water

机译：基于模拟的Case-1珊瑚礁水中Lyzenga多光谱测深公式的一般性研究

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摘要

Lyzenga's multispectral bathymetry formula has attracted considerable interest due to its simplicity. However, there has been little discussion of the effect that variation in optical conditions and bottom types-which commonly appears in coral reef environments-has on this formula's results. The present paper evaluates Lyzenga's multispectral bathymetry formula for a variety of optical conditions and bottom types. A noiseless dataset of above-water remote sensing reflectance from WorldView-2 images over Case-1 shallow coral reef water is simulated using a radiative transfer model. The simulation-based assessment shows that Lyzenga's formula performs robustly, with adequate generality and good accuracy, under a range of conditions. As expected, the influence of bottom type on depth estimation accuracy is far greater than the influence of other optical parameters, i.e., chlorophyll-a concentration and solar zenith angle. Further, based on the simulation dataset, Lyzenga's formula estimates depth when the bottom type is unknown almost as accurately as when the bottom type is known. This study provides a better understanding of Lyzenga's multispectral bathymetry formula under various optical conditions and bottom types. (C) 2017 Elsevier Ltd. All rights reserved.
机译：Lyzenga的多光谱测深公式因其简单性而引起了极大的兴趣。但是，关于光学条件和底部类型的变化（通常出现在珊瑚礁环境中）对此公式的结果的影响的讨论很少。本文评估了Lyzenga的多光谱测深公式，适用于各种光学条件和底部类型。使用辐射传输模型模拟了来自Case-1浅珊瑚礁水域的WorldView-2图像的水上遥感反射率的无噪声数据集。基于仿真的评估表明，Lyzenga公式在一定条件下的性能表现良好，具有足够的通用性和良好的准确性。不出所料，底部类型对深度估计精度的影响远大于其他光学参数（即叶绿素a浓度和太阳天顶角）的影响。此外，基于模拟数据集，Lyzenga的公式估算底部类型未知时的深度几乎与已知底部类型时一样准确。这项研究可以更好地了解Lyzenga在各种光学条件和底部类型下的多光谱测深公式。 （C）2017 Elsevier Ltd.保留所有权利。

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