Modeling Sea Bottom Hyperspectral Reflectance

Applied Sciences

卷:8

Martin Levesque¹  Georges Fournier¹  Jean-Pierre Ardouin¹ 

[1] DRDC Valcartier Research Centre, Québec, QC G3J1X5, Canada;

关键词: remote-sensing reflectance;    bathymetry;    hyperspectral;    bottom mapping;    radiative transfer;   

DOI  :  10.3390/app8122680

来源: DOAJ

【 摘 要 】

Over the near-ultraviolet (UV) and visible spectrum the reflectance from mineral compounds and vegetation is predominantly due to absorption and scattering in the bulk material. Except for a factor of scale, the radiative transfer mechanism is similar to that seen in murky optically complex waters. We therefore adapted a semi-empirical algebraic irradiance model developed by Albert and Mobley to calculate the irradiance reflectance from both mineral compounds and vegetation commonly found on the sea bottom. This approach can be used to accurately predict the immersed reflectance spectra given the reflectance measured in air. When applied to mineral-based compounds or various types of marine vegetation, we obtain a simple two-parameter fit that accurately describes the key features of the reflectance spectra. The non-linear spectral combination effect as a function of the thickness of vegetation growing on a mineral substrate is then accounted for by a third parameter.

【 授权许可】

Unknown