陀螺罗经的航向误差与航向角和器件误差之间存在着非线性映射关系,利用航向误差关系提出了一种捷联陀螺罗经标定方法。该方法根据陀螺罗经的航向效应,在分析了罗经航向误差传播机理的基础上,对航向误差进行曲线拟合,建立航向角与航向误差的数学模型,根据航向误差关系完成对陀螺罗经的标定。实验数据表明: 所提标定方法能够有效减小航向误差,提高陀螺罗经的使用精度,具有实际应用价值。

The heading error of gyrocompass has a nonlinear mapping relationship with the heading angle and the device error.In this paper, a strap-down gyrocompass calibration method is proposed based on the heading effect of gyrocompass.On the basis of analyzing the propagation mechanism of heading error of gyrocompass, curve fitting is made to the heading error, and the mathematical models of heading angle and heading error is established.Thus the gyrocompass calibration is completed according to the heading error relationship.The experimental data shows that the proposed calibration method can effectively reduce the heading error and improve the accuracy of gyrocompass, which has practical application value.