METHOD FOR MEASURING THE THICKNESS OF A LAYER OF OIL (OIL PRODUCTS) SPILLED ON THE WATER SURFACE Russian patent published in 2018 - IPC G01B15/02 

FIELD: measuring equipment.

SUBSTANCE: invention relates to radiometry. Method is based on measurements of radiothermal radiations from oil spills on water and from the atmosphere on vertical and horizontal polarizations by a two-channel radiometer at two frequencies and two elevation angles while suspending a radiometer on a support at two altitudes. Measured ratios of differences between the measured values of radiations from the oil spill on water and the atmosphere in the numerator on the vertical polarization, and in the denominator – on the horizontal polarization are determined separately for two frequencies and two elevation angles. In the range of thicknesses from 0 to 12 mm, theoretical ratios of a unit minus the coefficient of reflection of the oil layer on water for radiation in the numerator for vertical polarization, and in the denominator for horizontal polarization are calculated separately for two frequencies and two elevation angles. Four sets of thicknesses, in which the theoretical ratio is equal to the measured ratio corresponding to the angle and frequency, are determined. One value is selected from each set, closest to each other within a given error of thickness, and their average is taken as the measured thickness of the oil spill.

EFFECT: technical result is higher accuracy of measuring the thickness of oil spilled on the water surface and an increased thickness measurement range up to 12 mm.

1 cl, 4 dwg