GYROCOMPASS Russian patent published in 2015 - IPC G01C19/00 

FIELD: physics.

SUBSTANCE: gyrocompass comprises a housing, a platform, an angular velocity sensor in the form of a gyroscope mounted on the platform, a horizon sensor, a drive motor and a gyrocompass control system. The angular velocity sensor used is a fibre-optic gyroscope mounted on a rotary platform and connected through an RS-485 interface to an external notebook computer, and the platform with the fibre-optic gyroscope is levelled using linear stepper micromotors. Rotation of the levelled angular velocity sensor around its axis until angular fixation by the optical device of the landmark is carried out using a worm gear from the drive stepper motor. The stepper motors are electrically connected through control units and a USB coupler to the external computer. The external computer processes data from accelerometers through a small-size, multi-functional USB module of an ADC/DAC with digital input/output functions.

EFFECT: small size of the gyrocompass and high accuracy of measuring the azimuth on the earth's surface.

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