环形激光陀螺随机误差分析

Random error analysis of ring laser gyro

环形激光陀螺以其高稳定性等诸多优点被广泛应用。简要介绍了环形激光陀螺的工作原理,并应用Allan方差的原理对环形激光陀螺(RLG)的输出信号进行了分析,有效地分离出影响激光陀螺输出性能的几种主要随机误差源,分别求出了陀螺3个轴的误差系数,并对陀螺的性能进行了评估,所得结论为RLG的误差补偿及其在导航系统中的使用奠定了基础。

Ring laser gyro(RLG) is used widely with its too many advantages, including high stability,etc. First, the working principle of RLG is introduced simply. Then Allan variance is used in analyzing the output signal in RLG. The main random error sources that can affect RLG's output performance are separated successfully. The error coefficients in three gyro axises can be calculated respectively. In the end, the performance of RLG is evaluated.The conclusion provides the basis for RLG error compensation and its applying in the navigation (system.)