METHOD FOR MEASURING OBJECT IMMERSION DEPTH Russian patent published in 2017 - IPC G01S15/00 

FIELD: physics.

SUBSTANCE: method for measuring the object immersion depth, containing the radiation of a probing signal, receiving an echo, determining the propagation time and the distance to the object Dob; measuring the cut distribution of the sound velocity C in depth H; calculating the propagation path of the rays and determining the angle of the ray exit to the surface Q°, the duration of the echo signals Techo is measured from the object according to the number of counts that exceed the threshold, by the reflected echoes the presence of the illumination area on the surface Techo2 is determined, with the duration of the echo from the object Techo<Tp, where Tp - the maximum duration of the echo from the object, the distance is determined to the object Dob for the temporary position of maximum amplitude of the echo signal, if the detected second echo signal from the zone light duration Techo2>Tp, this duration determines the width of the illumination zone on the samples exceeded the detection threshold, the distance is measured to the beginning of the reflection from the surface of the light area Dbeg on a temporary starting area, the distance is measured to the end surface reflection from the surface, Dend for temporary reference middle of the zone, the maximum immersion depth of the object is determined for the measured distance H=cosQ°{0.5(Dend-Dbeg)-Dob}, if the reflection from the surface is not obtained, the depth is determined by the formula H=cosQ°{Dm.dis-Dob}, where Dm.dis - the calculated distance of the direction change of the ray path.

EFFECT: providing the classification of an object detected by a short-range hydrolocator in automatic mode.

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