SELECTIVE NAVIGATION SYSTEM Russian patent published in 2015 - IPC G01C23/00 

FIELD: instrument making.

SUBSTANCE: selective navigation system (SNS) contains an inertia navigation system (INS) with one output, receiver of satellite navigation system (RSNS) with one output, radar station (RS) with one output, unit for determination of degrees of observability and formation of measurements having three inputs and one output, Kalman filter and summation unit having two inputs and one output. INS output is connected with the first input of the unit for determination of degrees of observability and formation of measurements, its second input is connected with RSNS output, and the third input is connected with RS output. INS output is also connected with the second input of the summing unit, and Kalman filter output is connected with the first input of the summing input. SNS is equipped with squaring device and accumulating device, and unit for determination of degrees of observability and formation of measurements is made with the forth input. In the unit for determination of degrees of observability and formation of measurements in the criterion of degree of observability the dispersion of state vector components during flight are calculated.

EFFECT: improvement of accuracy and reliability.

2 cl, 2 dwg