Strapdown compass system based on triaxial integrated high-precision optic fiber gyroscope

Abstract

The invention relates to a strapdown compass system based on a triaxial integrated high-precision optic fiber gyroscope. The system consists of three components, namely a box, optic fiber gyroscope IMU (Inertial Measurement Unit) components and system circuit components, wherein the box is composed of a bottom plate and an outer housing; the bottom plate includes an inertial area and a circuit area, in which the optic fiber gyroscope IMU components and the system circuit components are contained respectively; the optic fiber gyroscope IMU components and the system circuit components are electrically connected by electric connectors. The invention adopts a modular integrated design, focuses on increasing the adaptivity and engineering property of the system, and successfully overcomes the problem that the service performance of the system is poor due to the large size, large weight, poor temperature performance, low consistency, complicated structure and the like of a platform gyrocompass, and the precision of the system is increased by optimizing a strapdown compass algorithm. The strapdown compass system has good practical value and broad application prospects in the technical field of inertia.

Description

Technical field: [0001] The invention relates to a strapdown compass system based on a three-axis integrated high-precision optical fiber gyroscope, which belongs to the technical field of inertial navigation. Background technique: [0002] The compass system is a sophisticated and complex navigation instrument, which can not only provide accurate heading and horizontal reference information for the navigation, armament, and command systems of large and medium-sized surface and underwater ships, but also display the ship's attitude angle and calculate the ship's position . The platform compass is generally equipped with two two-degree-of-freedom gyroscopes or three single-degree-of-freedom gyroscopes, and two electromagnetic pendulums or two accelerometers to form a leveling and north-finding circuit, and establish a three-axis space stable platform to track the geographic coordinates of the northeast sky Tie. Due to the mechanical platform structure, the platform compass ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a strapdown compass system based on a three-axis integrated high-precision fiber optic gyro, which uses a three-axis integrated high-precision fiber optic gyro as an inertial sensitive element, and overcomes the large volume, complex structure, and shock resistance of the platform compass. Weak capacity, high cost and other problems, focusing on improving the system's environmental adaptability and actual performance, reducing the system start-up time, simplifying the assembly production process, and ensuring the reliability and maintainability of the system

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