FIELD: hydrometry; oceanography.
SUBSTANCE: invention relates to the field of hydrometry and oceanography, methods for measuring the height of the interface between liquid and air, methods for measuring the slopes of the interface, for example, measuring the wave height, wave spectrum, slope spectrum. Disclosed is a method for measuring the angles of inclination and wave height of the water surface relative to its equilibrium state. The laser beams are directed along the vertical Z axis. The scattered radiation is recorded using a digital video camera. The boundaries of the illumination of the laser beams on a digital matrix, taking into account the calibration, are converted into wave applicates. The laser beams are scanned over the surface with the video recording frequency, two beams are synchronously scanned in mutually perpendicular directions X and Y, or the third beam is added to the two perpendicular beams, which, synchronously with the first two, scans at a certain distance from the first two, and the instantaneous profile of the surface along the scan path of two or three beams is calculated taking into account the scanning speed and the speed of vertical movement of the surface height at each point of the trajectories.
EFFECT: multiple increase in the accuracy and reliability of measurements of heights (applicates) of the wave surface along the scanning lines, slopes at each point in selected directions and two-dimensional slopes averaged at various spatial scales (from millimeters to meters) due to which the spatial resolution increases and it is possible to register not only gravitational-capillary, but also capillary waves.
3 cl, 3 dwg
