A rotating inertial navigation system with the rotating axis error compensation consisting of fiber optic gyros
A rotating inertial navigation system with the rotating axis error compensation consisting of fiber optic gyros
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DOI：
10.1007/s11801-012-1103-6
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发表时间：
2012-03-01
影响因子：
0.9
通讯作者：
Luo Yin-bo
中科院分区：
文献类型：
--
作者：
Zha Feng;Hu Bai-qing;Luo Yin-bo
为了提高旋转惯性导航系统（RINS）的精度，设计了一种有效、灵活的旋转补偿方案。单轴旋转惯导系统的精度受到旋转轴误差的限制。提出了一种新的光纤陀螺惯性导航系统（FOG RINS）旋转轴误差补偿的惯性测量单元（IMU）方案。该方案采用两对误差特性相似的惯性传感器相对安装在旋转轴上的方法来补偿传感器误差。该方案在不改变旋转周期的前提下，提高了系统的精度和可靠性，并为系统提供了冗余。36 h的导航仿真结果表明，该系统的导航精度比常规捷联惯导系统有显著提高，航向精度比单轴RINS提高了3倍，位置精度提高了1个数量级。
An effective and flexible rotation and compensation scheme is designed to improve the accuracy of rotating inertial navigation system (RINS). The accuracy of single-axial RINS is limited by the errors on the rotating axis. A novel inertial measurement unit (IMU) scheme with error compensation for the rotating axis of fiber optic gyros (FOG) RINS is presented. In the scheme, two couples of inertial sensors with similar error characteristics are mounted oppositely on the rotating axes to compensate the sensors error. Without any change for the rotation cycle, this scheme improves the system's precision and reliability, and also offers the redundancy for the system. The results of 36 h navigation simulation prove that the accuracy of the system is improved notably compared with normal strapdown INS, besides the heading accuracy is increased by 3 times compared with single-axial RINS, and the position accuracy is improved by 1 order of magnitude.