NOISE-IMMUNE DIFFERENCE-RANGE LOCAL RADIO NAVIGATION SYSTEM INTEGRATED WITH AN INERTIAL NAVIGATION SYSTEM PROVIDING HIGH-PRECISION POSITIONING OF MOVING OBJECTS Russian patent published in 2023 - IPC G01C21/00 G01S3/46 G01S7/00 G06G7/78 

FIELD: radio navigation.

SUBSTANCE: claimed difference-range local radio navigation system integrated with an inertial navigation system solves both the problem of positioning and the problem of monitoring objects. The system uses a non-request mode and a difference-range method of positioning with a practically unlimited number of system users, a noise-resistant method of signal code correlation processing, dynamically changing pseudo-random sequences, methods of dealing with re-reflected signals, high-power noise-like signals at the receiving point, for which noise suppression at the output matched power filter is 2B times, where B is the signal base. In the system, each subscriber terminal comprises a Kalman filter, which outputs navigation data from the inertial sensor at a high frequency with periodic high-precision data correction from the local navigation system.

EFFECT: implementing a noise-resistant radio navigation system that provides high-precision positioning of moving objects, resistance to imitation, masking interference.

1 cl, 9 dwg, 3 tbl