| 光纤陀螺噪声对惯导系统精度影响的小波分析 |
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| 引用本文： | 遇元杰,蔡春龙. 光纤陀螺噪声对惯导系统精度影响的小波分析[J]. 导航与控制, 2013, 0(1): 45-49 |
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| 作者姓名： | 遇元杰 蔡春龙 |
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| 作者单位： | 北京航天时代光电科技有限公司;北京航天时代光电科技有限公司 |
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| 摘 要： | 针对当前典型光纤陀螺捷联惯导系统，研究了低动态条件下光纤陀螺输出信号的噪声特性，运用小波多尺度变换方法进行了噪声各频段分量对导航精度影响的深入研究及仿真分析，然后采用小波阈值去噪方法进行了实测数据滤波的有效性验证。结果表明，光纤陀螺噪声的低频段部分是影响导航定位误差的主要因素，而对陀螺高频段噪声的滤波措施对导航精度影响甚微。
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| 关 键 词： | 光纤陀螺捷联惯导；小波多尺度分析；阈值去噪；导航误差 |
Wavelet Analysis on the Influence of FOG Noise to Accuracy of Inertial Navigation System |
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| YU Yuan-jie and CAI Chun-long. Wavelet Analysis on the Influence of FOG Noise to Accuracy of Inertial Navigation System[J]. Navigation and Control, 2013, 0(1): 45-49 |
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| Authors: | YU Yuan-jie and CAI Chun-long |
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| Affiliation: | Beijing Aerospace Times Optical-Electronic Technology Co.,Ltd;Beijing Aerospace Times Optical-Electronic Technology Co.,Ltd |
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| Abstract: | Aiming at current FOG SINS, the noise characteristic of the output signals of FOG in low dynamic condition is analyzed, according to wavelet multi-resolution analysis and navigation simulation, the influence of noise in different frequency band to navigation performance is studied, and wavelet threshold filtering is used in certain experiments to verify the correctness of conclusion. It shows that the low-frequency part of FOG noise is the major factor of navigation positioning error, and filtering in high-frequency part makes little contribution to navigation accuracy. |
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| Keywords: | FOG SINS wavelet multi-resolution analysis wavelet threshold filtering navigation erro |
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