FIELD: physics.
SUBSTANCE: bottom of the water body is illuminated at the nadir using a radiator (2) mounted on a cruising submarine vessel (1). The radiator (2) is in form of at least one source of coherent broadband low-frequency acoustic radiation with power in the order of 1 kW or higher. Reflected radiation is picked up by acoustic receivers (4) rigidly mounted on the submarine vessel (1). The received signals are processed using a correlation technique.
EFFECT: high quality of the obtained material.
4 cl, 3 dwg
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