METHOD OF TRANSMITTING SIGNALS ON UNDER-ICE ACCIDENT USING HYDROACOUSTIC SIGNALLING DEVICE AND APPARATUS FOR REALISING SAID METHOD Russian patent published in 2014 - IPC B63B22/00 G01S15/02 B63G8/00 B63C7/26 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to search and underwater engineering work in the presence of a continuous ice cover in the region of an accident at an underwater facility, e.g. a submarine vessel. The method is based on transmitting acoustic signals in an aquatic environment. A signalling device is connected to a buoy by a strong cable, e.g. Kevlar; an article is shot through a torpedo launcher or released by a locking device from the body of the carrier, wherein the buoy floats to the ice surface, and the signalling device, which lies on the required level of propagation of sound waves, is triggered by a code signal for radiation. The device for transmitting a signal on an under-ice accident over a hydroacoustic channel by mounting the signalling device at a given depth includes a buoy. The buoy is equipped with a synthetic cable of given length, which is tied to the signalling device to hold said device at a depth of the area of the underwater audio channel, wherein the buoy floats and is pressed to the lower edge of the ice.

EFFECT: considerably easier search and rescue operations on submarine vessels in Arctic conditions by increasing the range of the signal of the emergency signalling device.

2 cl, 1 dwg