AUTOMATED NAVIGATION SYSTEM WITH INTEGRITY CONTROL OF NAVIGATION DATA OF SATELLITE RADIO NAVIGATION SYSTEMS Russian patent published in 2015 - IPC G01C21/26 

FIELD: radio engineering, communication.

SUBSTANCE: system additionally includes a circuit for allowing the use of satellite signals (SRISS) which consists of a subtractor, a threshold device and a key device, wherein the subtractor is connected to the SRISS circuit to allow the transmission to its input of signals from outputs of barometric altimeters and an on-board computer, the threshold device is connected to the SRISS circuit to allow the transmission to its input of signals from the output of said subtractor, the key device is connected to the SRISS circuit to allow the transmission to its control input of a signal from the output of the threshold device; the SRISS circuit is further installed to allow the transmission of signals from the output of satellite navigation equipment through the key device to the input of the on-board computer.

EFFECT: broader functional capabilities.

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