Development of a Fluorescent-Colorimetric Complex for Measuring the Depth of Oil Film on the Surface of the Sea with Intersensory Calibration

The paper is devoted to the development of scientific-methodical basics of the construction of fluorescent-colorimetric measurements of the depth of oil film on the sea surface using the intersensory calibration principle. The peculiarity of the suggested complex is that in orderto carry out the operations of periodical calibration of the fluorescent subsystem the two-level calibration system is used. Advantages and shortages of fluorescent and colourimetric methods of measuring oil film depth on the sea surface are analyzed. The necessity of utilization of the intersensor calibration principle in the complex of fluorescent-colourimetric measurements of oil film depth is stressed. The techniques of construction and an algorithm realisation of intersensor calibration in the complex for measuring of oil films depth is described. The matter of suggested techniques is that the initial assessment of oil film depth by help of colorimetric measuring instrument with relatively higher error should be carried out. Then, depending on the initial estimate, the accurate measurement is to be carried out by measuring the instrument functioning on the basis of analysis of the reflection spectrum. The necessity of an adaptive change of transmission bandwidth of the filter of the receiving part depending on colourimetric measuring of oil film depth is grounded. The method for removal of effect of atmospheric aerosol on value of obtained result is suggested. It is shown that utilization of known formula of Angstrom upon three wavelengths measurements make it possible to develop a methodic to remove effect of aerosol on result of measurements.