DETECTOR OF MOVING UNDERWATER OBJECTS AGAINST THE BACKGROUND OF BIOLOGICAL NOISE IN A SHALLOW WATER AREA INHABITED BY NIPPER-PRAWNS Russian patent published in 2022 - IPC G08B3/00 

FIELD: sensing technology.

SUBSTANCE: invention relates to devices for detecting moving underwater objects. Essence: the device contains a signal processing unit (2), made with the possibility of receiving acoustic signals in the form of natural biological noise from nipper-prawns, an amplitude detector (3), a recording device (4) and a block (5) for displaying information. The signal processing unit (2) includes similar first and second receiving channels (2.1, 2.2), a subtracting device (2.3) and an adaptive filter (2.4). Each of the receiving channels (2.1, 2.2) includes a receiving antenna device (2.1.1, 2.2.1), a bandpass filter (2.1.2, 2.2.2), made with the possibility of registering signals at a frequency of 4200-4600 Hz, and a matching device (2.1.3, 2.2.3).

EFFECT: detection of moving underwater objects in hidden mode.

1 cl, 7 dwg