A Possibility of Determining the Optical Peoperties of Water from the Snell-Window Image

The Snell’s Window Image for Remote Sensing of the Upper Sea Layer: Results of Practical Application

“…The work was based on the theoretical model of the accumulated Snell's window image [8,10], the proposed algorithms for solving inverse problem and the data of field measurements from several expeditions of 2018. For a better understanding of the paper we will briefly consider the theoretical model of the instantaneous image of the Snell's window, explain the physical principles of its formation and provide a table of abbreviations and symbols used in this paper (Table 1).…”

“…The model of the accumulated Snell's window image takes into account the effects of multiple scattering and absorption of light in water is quite voluminous and has already been presented in previous work [8,10]. Therefore, in this paper, we present only the general equations that are necessary for the description and implementation of algorithms for the restoration of water optical properties; moreover, we specify the conditions for their derivation and their applicability.…”

“…As we can see from Equations (6)- (8), function L depends on three parameters: absorption and scattering coefficients a and b, and slope variance σ 2…”

“…As we can see from Equations (6)- (8), function L depends on three parameters: absorption and scattering coefficients a and b , and slope variance 2 x  . The first of which is included only in the multiplier ( , , ) A Z a  and two others in multiplier…”

“…As a result, in [6], the outcome of the theoretical study in estimating the absorption and scattering coefficient of water through the Snell's window distortion was presented under the assumption that there was a known parameter, characterizing sea roughness like slope variance. Results of the first testing of the proposed algorithms for images from the Black Sea and empirical regressions between the inherent optical properties (IOP) at 532 nm [7] are presented in [8]. Subsequently, the possibility of determining the absorption coefficient for three spectral channels (420 nm, 530 nm and 650 nm) was demonstrated for fresh water of the Gorky Reservoir, characterized by high concentrations of chlorophyll a and dissolved organic matter [9].…”