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首页> 外文期刊>Journal of Modern Optics >Self-calibration and compensation of residual gyro drifts for rotation inertial navigation system with fibre optic gyro
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Self-calibration and compensation of residual gyro drifts for rotation inertial navigation system with fibre optic gyro

机译：用光纤陀螺旋转惯性导航系统的剩余陀螺漂移的自校准和补偿

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摘要

Fibre optic gyros (FOGs) are widely used in the rotation inertial navigation system (RINS). However, FOGs are sensitive to surrounding environments, and thus the drifts of FOGs would vary during the rotation of the gyros. This phenomenon may bring about residual gyro drifts, which are the primary cause for the accumulated navigation errors in the RINS. A recursion least square estimation method based on position errors is proposed to obtain residual drifts. A multi-position calibration method is presented to separate the residual drifts along the body axis. Static experiment results show that the positioning accuracy of a 12-h navigation is improved significantly from 2.24 to 0.54 n mile by compensating the residual drifts along the body axis. A vehicle-mounted motional experiment is conducted to verify the proposed calibration method, and the positioning accuracy is improved from 1.38 to 0.66 n mile.
机译：光纤陀螺仪（雾）广泛用于旋转惯性导航系统（RIN）。 然而，雾对周围环境敏感，因此雾的漂移在陀螺旋转过程中会变化。 这种现象可以带来残余陀螺漂移，这是卷中累积导航误差的主要原因。 提出了一种基于位置误差的递归最小二乘估计方法以获得残留漂移。 提出了一种多位置校准方法以将沿着主体轴线分离的残留偏移。 静态实验结果表明，通过补偿沿着体轴的残余漂移，12-H导航的定位精度从2.24到0.54 n英里显着改善。 进行车载的动机实验以验证所提出的校准方法，定位精度从1.38降至0.66厘米。

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