Split type fiber-optic gyroscope north-seeker

Abstract

The invention discloses a split type fiber-optic gyroscope north-seeker which is composed of an inertial sensor device and a display and control device. The inertial sensor device of the system comprises two fiber-optic gyroscopes and two quartz flexible accelerometers in orthogonal distribution in a horizontal direction, is rigidly connected to an indexing mechanism by virtue of a T-shaped bracket, and is responsible for measurement of rotational angular velocity of the earth and gravitational acceleration; and the display and control device is responsible for completion of functions such asinternal source transformations, indexing control of the indexing mechanism, calculation of the course angle and attitude angle, man-machine interaction and the like. According to the split design, the fiber-optic gyroscope north-seeker is divided into two parts, namely the inertial sensor device and the display and control device, and the inertial sensor device is compact in design and is particularly applicable to application occasions with space limitations; and due to the arrangement of the two fiber-optic gyroscopes and the two accelerometers, the indexing frequency can be decreased fromfour times to twice in a four-position north-seeking scheme, the residence time at a single position is doubled, and the sampling time of the fiber-optic gyroscopes is increased, so that the system accuracy is improved.

Description

(1) Technical field: [0001] The invention relates to the field of inertial technology navigation, in particular to a split-type fiber optic gyro north finder. (two) background technology: [0002] The gyro north finder is an instrument that uses the inertial principle of the gyroscope to realize independent north finding. It can realize all-weather, all-round, autonomous and fast direction determination without being restricted by natural conditions, and also has high precision and long continuous working time. And many other advantages, it has a very broad application prospect. In the military field, the gyro north finder is one of the important support technologies to ensure rapid, maneuverable and precise strikes of weapon systems in modern information warfare. Therefore, while many developed countries in the world are developing high-performance strategic and tactical weapons, they have invested a lot of manpower and material resources in the research and development of...

AI Technical Summary

Problems solved by technology

[0004] 1. The existing north finder uses a mechanical gyroscope as the core component of the north finder, but the mechanical gyroscope has poor reliability, short life, and is easily affected by acceleration, resulting in insufficient test accuracy and poor stability

[0005] 2. The existing north finder generally adopts an integrated design, the internal structure is complex, and the volume is large, which is not conducive to maintenance, nor is it suitable for applications requiring volume

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