STRAPDOWN INTEGRATED NAVIGATION SYSTEM OF AVERAGE ACCURACY FOR MOBILE ONSHORE OBJECTS Russian patent published in 2015 - IPC G01C23/00 

FIELD: instrument engineering.

SUBSTANCE: invention can be used in small-sized strapdown inertial navigation systems (SINS) integrated both with a satellite navigation system (SNS) and with the odometer system for use in mobile onshore devices of different types. The system comprises a unit of sensing elements (SE), a unit of calculating linear and angular velocities and the geographical coordinates, the unit of generation of signals of damping, the first and second units of quaternion calculations, the unit of calculating the matrix of the directing cosines and angles of the system orientation, the receiver of signals of the satellite navigation system (SNS), the unit of determining the quality of SNS signal, the switch of the vector signals, the first and second adders-subtractors of the vector signals, the unit of correction of course angle, and also the wander of directional (azimuth) gyroscope, the unit of stop-detector, the unit of the odometer system with a plurality of connections of different signals between the units and switching connections in different manoeuvres of the object-carrier of SINS.

EFFECT: improvement in accuracy when using coarse or moderate-accurate sensitive elements of SINS.

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