METHOD FOR SURVEYING RELIEF OF BOTTOM OF WATER AREA Russian patent published in 2021 - IPC G01S15/00 

FIELD: hydroacoustics.

SUBSTANCE: invention relates to the field of hydroacoustics and can be used for bathymetric survey of the bottom relief of the water area with a multi-beam echo sounder. In the method for surveying the relief of the bottom of the water area, the survey of the relief of the bottom of the water area is carried out when the vessel is moving by tacks using hydroacoustic emitting and receiving antennas, connected in a T-shape, when radiating, the viewing sector is divided into three subsectors overlapping it: the first subsector is central, the second and third subsectors along the edges of the viewing sector, set the probing period T₁ for the first subsector, set the probing period T₂=2T₁ for the remaining subsectors, generate the first signal with the amplitude U₁ for radiation into the first subsector, generate the second and third signals with the amplitude U₂≥6U₁ for the rest of the subsectors, sequentially emit signals towards the bottom in each of the subsectors, determine the time delay between the moments of emission and reception of the echo signal, and also calculate the estimate of the distance from the bottom for each of the receiving directivity characteristics, averaging the distances from the bottom obtained in the first subsector for two adjacent sounding cycles, form the values ​​of the distance from the bottom in the swath in accordance with the sounding period set for the second subsector and the third subsectors, determine the parameters of the vessel's movement and the profile of the speed of sound in the water for calculating corrections, determine the true depths by summing the obtained distances from the bottom and corrections, register the true depths and their geodetic coordinates.

EFFECT: increasing the rate of survey of the bottom relief of the water area while ensuring the specified width of the swath in the traverse plane of the vessel.

1 cl, 3 dwg