METHOD FOR MEASURING THE DEPTH OF IMMERSION OF AN OBJECT Russian patent published in 2023 - IPC G01S15/58 

FIELD: measuring technology.

SUBSTANCE: invention relates to the field of hydrolocation technology and is intended for measuring the depth of immersion of a detected object by hydroacoustic stations for near-field illumination. Essence: in a method for determining the depth of immersion of an object containing the radiation of a probing signal, measuring the distance, measuring the path traveled by the sonar, re-measuring the distance by the following premise passed by the sonar during the time between probing signals according to the formula D = TV, where V is the speed of the sonar in m/s, and T the time between the emitted signals in seconds, the echo signal is received by a static fan of horizontal directional characteristics intersecting at the level of 0.7, a set of time realizations is made sequentially for all directional characteristics, the distance to the detected object R_i, the heading angle HA_l, and the number of the spatial channel C_i in which the detection occurred are measured and stored, the correlation coefficient between the time realizations is determined neighboring spatial channels C_i+1, C_i and C_i-1, from which those neighboring spatial channels are selected, in which the correlation coefficient is greater than 0.5, at the second premise, an echo signal is received with the same fan of static directional characteristics, the distance R_J and the heading angle HA_j are determined, the spatial channel C_J corresponding to HA_j is determined, the correlation coefficients between the time realizations of the spatial channels C_j+1, C_j and C_j-1 are determined if there are adjacent channels in both premises with a correlation coefficient greater than 0.5 and these channels partially coincide, and at the same time R_j <RJ, the depth of the detected object is determined by the formula H=2S/TV, where S is the area determined by the formula

and P = 0.5 (R_i+R_J+ VT).

EFFECT: increasing the reliability of measurements by eliminating the influence of reverberation interference and a complex interference situation in the measurement area on the measurement of the depth of immersion of the detected object.

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