High-precision and low-cost heterogeneous laser gyro north seeker

Abstract

The invention discloses a high-precision low-cost heterogeneous laser gyro north seeker, which belongs to the technical field of north seeking of inertial navigation systems, and comprises a first base and an inertial measurement unit, wherein first grooves are formed in the upper end, the lower end, the left end, the right end, the front end and the rear end of first base correspondingly; the inertial measurement unit is arranged on the first base and is used for realizing inertial device data acquisition; the inertial measurement unit comprises a first 50-type laser gyroscope, a second 50-type laser gyroscope and a 90-type laser gyroscope, can measure the movement angular velocity of the inertial measurement unit relative to an inertial space and forms a pulse signal, the first 50-type laser gyroscope is fixedly arranged in the first groove in the left side of the first base, the second 50-type laser gyroscope is fixedly arranged in the first groove in the upper side of the first base, and the 90-type laser gyroscope is fixedly arranged in the first groove in the front side of the first base. On the premise that high-precision north-seeking measurement is guaranteed, the cost, the size and the weight of the equipment are reduced, and use, maintenance and batch production of the equipment are facilitated.

Description

technical field [0001] The invention relates to the technical field of north-seeking of an inertial navigation system, in particular to a high-precision and low-cost heterogeneous laser gyro north-finder. Background technique [0002] The laser gyro north finder uses the laser gyroscope and accelerometer to measure the component value of the earth's rotation angular rate and the horizontal error angle of the gyro axis. After solving, the angle between the reference axis of the north finder body and the true north direction is obtained, that is, the north azimuth horn. [0003] The measurement accuracy of the north finder mainly depends on the accuracy level of the inertial device. For this reason, three identical high-precision laser gyroscopes are usually used to form the same type of north finder for north finding measurement. However, this combination method results in high equipment costs, Problems such as large volume and weight increase the difficulty of transportatio...

AI Technical Summary

Problems solved by technology

[0003] The measurement accuracy of the north finder mainly depends on the accuracy level of the inertial device. For this reason, three identical high-precision laser gyroscopes are usually used to form the same type of north finder for north finding measurement. However, this combination method results in high equipment costs, Problems such as large volume and weight increase the difficulty of equipment transportation and operation

Images