| 基于惯性系的双轴旋转式惯导系统转位方法 |
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| 引用本文： | 郑志超,王振华.基于惯性系的双轴旋转式惯导系统转位方法[J].宇航学报,2013,34(4):516-522. |
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| 作者姓名： | 郑志超 王振华 |
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| 作者单位： | 1. 武汉光电国家实验室(筹)，华中科技大学光电子科学与工程学院，武汉 430074；
2.华中光电技术研究所，武汉 430074 |
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| 基金项目： | 海军武器装备预研项目（4010101030301） |
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| 摘 要： | 针对双轴旋转式惯导系统中不能自动补偿标度因数误差与地球自转耦合误差的问题，提出了一种改进的转位方法。该方法不增加转轴数目，通过补偿地球自转在转轴平面的投影抑制耦合误差项，计算结果表明该方法适用于激光陀螺惯导系统和光纤陀螺惯导系统。利用改进的转位方法对双轴旋转式惯导系统进行仿真，仿真结果验证了该方法的可行性。研究结果为双轴旋转式惯导系统的工程设计和改进提供了一定的理论支持。
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| 关 键 词： | 惯性导航系统 旋转调制 标度因数误差 耦合误差 误差补偿 |
| 收稿时间： | 2012-04-11 |
Indexing Method for Dual Axis Rotation INS Based on the InertialCoordinate System |
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| ZHENG Zhi chao,WANG Zhen hua.Indexing Method for Dual Axis Rotation INS Based on the InertialCoordinate System[J].Journal of Astronautics,2013,34(4):516-522. |
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| Authors: | ZHENG Zhi chao WANG Zhen hua |
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| Institution: | 1.Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
2.Huazhong Institute of Optoelectronic Technology, Wuhan 430074, China |
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| Abstract: | Considering that the coupling error between the scale factor error and the Earth rotation cannot be automatically compensated in the dual axis rotation inertial navigation system, an improved indexing method is proposed in this paper. Without adding rotating shaft, this method restrains the coupling error by compensating the Earth rotation in the plane of the rotating shaft, mathematical analysis indicates that this method is suitable for laser gyroscopes and fiber optic gyroscope. Computer simulation results illustrate the efficiency of this improved indexing method. The research provides certain theoretical support for engineering design and modification of dual axis rotation inertial navigation system. |
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| Keywords: | Inertial navigation system Rotation modulation Scale factor error Coupling error Error compensation |
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