METHOD OF MEASURING DEPTH OF OBJECT USING SONAR Russian patent published in 2014 - IPC G01S15/00 

FIELD: physics.

SUBSTANCE: method includes emitting a probing signal, receiving an echo signal with a static fan, directional characteristic in the horizontal plane, performing multichannel processing on all directional characteristics, selecting a threshold in each channel, determining the starting time T_min and end time T_max of the echo signal in each spatial channel, selecting a channel having the maximum delay time of the end of the echo signal T_max and the minimum delay time of the beginning of the echo signal T_min corresponding to said channel, calculating the distance D_beg=T_min0.5S, calculating the distance at the end of the echo signal D_end=T_max0.5S, and the depth of the of the position of the beginning of the echo signal is determined using the formula $$H=\sqrt{D_{eng}^2-D_{beg}^2},$$ where H is the depth of the position of the beginning of the gas shroud; D_end is the distance corresponding to the maximum time of the end of the echo signal or the exit of the gas shroud from the pipe; D_beg is the distance corresponding to the maximum time of the beginning of the echo signal or the emergence of the gas shroud onto the surface; S is the speed of sound in the operating region.

EFFECT: enabling detection and classification of a leak source on an underwater gas pipeline and determining the location of a gas leak object.

1 dwg