METHOD OF DEFINITION OF THE STRUCTURE OF THE HYDROACOUSTIC FIELD OF TECHNOGENIC SUBMARINE OBJECTS FROM VIBRATIONS OF THE ENCLOSURE UNDER THE ACTION OF DYNAMIC FORCES

摘要

FIELD: hydro acoustics.;SUBSTANCE: invention relates to the field of hydroacoustics and can be used to measure (refine) the structure of the hydroacoustic field (HAF), including the dependences of the HAF on the angle in space and on the distance to the object. Technical result is achieved due to the fact that in the known method, instead of the antenna arrays, in the area of determining the structure of the GAP, there is a source of sound pulses, for example, an explosion of a small charge of explosives, with known volume acceleration; on the underwater facility located in the selected area of the water area, a vibrational response is recorded from the radiation of the pulsed source at the site of action of the known dynamic force, then, during processing, the transmission characteristic of the radiation of the object is found in the region of the location of the pulsed source, then the HAP is measured; to determine the angular dependences of radiation, the object is located at different angles with respect to the pulsed source, for example, by means of its movement along the circumference (circulation), the radiation of the pulsed source is repeated and the HAP measurement every time when the object is at the required angle, in this case, before the measurements are taken in the water area, the object and the pulsed source are located so that the differences in the arrival times of the pulses reflected from the boundaries in comparison with the direct ones would be maximum; using only a vibrational pulse excited by a direct signal from a pulsed source, with appropriate processing, the values of the HAF of the object are obtained without affecting the boundaries of the medium (in unlimited space).;EFFECT: possibility of obtaining data on the structure of HAF in the absence of influence of boundaries, hydro-acoustic conditions and at considerable distances from the object; reduction of material, financial and time costs for conducting measurements; possibility to carry out measurements practically on any water areas; possibility of determining contributions from various sources of HAF within the facility.;1 cl