APPARATUS FOR SUBGLACIAL RECEPTION OF SATELLITE NAVIGATION SYSTEM SIGNALS Russian patent published in 2014 - IPC H01Q1/04 

FIELD: physics, navigation.

SUBSTANCE: invention relates to use of satellite navigation systems in high latitudes. The apparatus for subglacial reception of satellite navigation system signals by an object in a subglacial position includes raising the object to the ice cover and breaking the ice in the area of the antenna device, the apparatus being characterised by that it includes an extension device which is a hollow pipe with diameter of up to 150 mm, in the top part of which a perforated ring is attached and inside it there is a steam pipe and a pipe with high-pressure air, wherein the perforated ring has mixing nozzles for directed outlet of steam for penetrating breakage (melting) of ice from below in order to form a hole and feeding high pressure air in order to remove sea water from the formed hole to allow the antenna to come out at a given height, determined by a contact sensor for detecting contact of the extension device with ice, wherein the extension device moves in the vertical plane and is rotated by a reducing gear from an electric motor and is fixed at a given point on the cockpit of the underwater object, and has an antenna for receiving satellite navigation system signals; the output of the antenna is connected to the input of a computing unit, which determines the height of the extension device, selects the optimum mode of supplying the heat carrier and control thereof depending on the given steam drilling mode, and calculates observed coordinates of the underwater object.

EFFECT: receiving second-generation satellite navigation system signals to perform subglacial observation at an arbitrary moment in time.

3 cl, 6 dwg