一种便携式倾斜基座光纤陀螺寻北仪设计

A Portable Tilted Base FOG North-Seeker Design

单轴旋转光纤陀螺寻北仪是一种基于捷联式惯性工作原理的快速、高精度、自主式定向装置。利用光纤陀螺测量平面内不同方向地球自转角速率在载体坐标系水平方向上的分量,通过解算得出参考方向与真北方向的夹角。在建立光纤陀螺寻北仪误差模型和光纤陀螺误差模型的基础上,设计了适用于倾斜条件下的便携式光纤陀螺寻北仪,分析了双位置、四位置寻北模式差异,完成了倾斜基座寻北补偿。本文讨论了便携式寻北仪的整体结构布局方式以及线路总体设计及其实现功能,利用F120H-M闭环光纤陀螺进行了半实物仿真验证及主要元件指标分析。

The single-axis rotary fiber gyroscope is a fast, high-precision, autonomous directional device based on the principle of strapdown inertial operation. Using the fiber-optic gyro to measure the components of the earth’s rotation rate in different directions in the carrier coordinate system horizontally, the angle between the reference direction and the true north direction is calculated by solving the calculation. Based on the establishment of the fiber-optic gyroscope error model and the fiber gyroscope error model, the portable fiber-optic gyro-finding north instrument suitable for tilting conditions is designed, the difference of dual-position and four-position north-finding mode is analyzed, and the compensation of tilt base north is completed. This paper discusses the overall structure layout of the portable north finder and the overall design of the line and its im-plementation function, and uses the F120H-M closed-loop fiber gyro to verify the semi-physical simulation and analyze the main component index.