METHOD OF SUBGLACIAL RECEPTION OF SIGNALS FROM SATELLITE NAVIGATION SYSTEMS AND DEVICE FOR IMPLEMENTING METHOD ON NAVIGATION HORIZON Russian patent published in 2008 - IPC H01Q1/04 

FIELD: physics; radio.

SUBSTANCE: present invention pertains to radio engineering and particularly to use of satellite navigation systems and can be used for correction of an inertial navigation system of a submerged object located in the Arctic Ocean under ice. The technical outcome is achieved by that, using the first and second running-pulling tools, first and second positive buoyancy can be achieved at the lower edge of the ice can be reached in points A and C, inside of which there is a first and second antenna, first and second satellite navigation system receivers, first and second mechanisms for putting antennae into the ice, first and second compact inertial navigation systems, first and second time measuring devices, first and second control units and a second recording devices. After putting the first and second antennae into the ice at points A and C, moving them to the lower edge of the ice and receiving spacecraft signals using these antennae, parameters of these signals are measured. From the values of these parameters, the observed geodesic coordinates of points A and C are determined. The reception time of the spacecraft signals by the antennae is fixed. All the above described operations are repeated at points B and "Д" for second movement to the lower edge of the ice. The reception time of spacecraft signals by the antennae is fixed again, as well as the starting time for repeated movement of positive buoyancies from the first and second running-pulling tools to the lower edge of the ice. The calculated geodesic coordinates of the first and second compact inertial navigation systems are determined with time referencing them during the period, characterised by time spent on putting the first and second antennae into ice and their repeated putting into ice at points of their repeated movement to the lower edge of the ice. From the obtained data, the observed geodesic coordinates of the location of the submerged object are calculated respectively for the first and second running-pulling tools, on the information obtained in the same moment in time, and from the coordinates, corrections to the true course of the submerged object generated by the onboard inertial navigation system, can be calculated.

EFFECT: widening of functional capabilities through provision for determination with the required accuracy, of correction to the true course, generated by an onboard inertial navigation system of a submerged object.

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