METHOD FOR RECEIVING SIGNALS FROM SATELLITE NAVIGATION SYSTEMS FROM UNDER THE ICE AND DEVICE FOR REALIZATION OF METHOD Russian patent published in 2007 - IPC H01Q1/04 

FIELD: satellite navigation systems, possible use for concealed correction of inertial navigation system of underwater object when it is located under ice.

SUBSTANCE: in accordance to method for receiving satellite navigation signals under ice, underwater object is docked with lower edge of ice by cabin and nose section in spots, where antennas of satellite navigation systems are mounted, insertion of these antennas into man-made hollows in ice, while hollows are freed from water and signals of spacecraft are received by dry antennas, which are used to determine location coordinates of aforementioned antennas and on basis of received data a correction to true course generated by inertial navigation system of underwater object is calculated. Device for realization of method consists of first and second antennas, receivers of satellite navigation signals, distanced for given distance, each of which is made in form of head, for example, mechanical drill, each one of which is held in upper section of first and second extending devices respectively, represented by a hollow tube with diameter up to 200 mm, inside which high pressure air duct is located, moved in v plane and rotated by means of reducers and electric motors respectively. Extending devices are mounted in given sections of cabin and nose section of underwater object. Also device has first and second receivers of satellite navigation signals, input of which is connected to output of first and second antennas, control block, block for determining correction to true course computed by inertial navigation system of underwater object, while control block is connected to inputs of two receivers of satellite navigation system signals and to input of block for determining correction to true course, generated by inertial navigation system of underwater object, output of which is connected to outputs of two receivers of satellite navigation system signals.

EFFECT: possible determining of course correction with required precision for true course generated by inertial navigation system of underwater object when it is located under ice.

2 cl, 2 dwg