| 小波分析在捷联惯导陀螺信号滤波中的应用 |
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| 引用本文： | 刘镇平,张春熹,王妍.小波分析在捷联惯导陀螺信号滤波中的应用[J].中国惯性技术学报,2005,13(1):77-80. |
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| 作者姓名： | 刘镇平 张春熹 王妍 |
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| 作者单位： | 北京航空航天大学仪器科学与光电工程学院,北京,100083 |
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| 摘 要： | 介绍了小波变换和多分辨率分析理论。针对捷联惯导系统中光纤陀螺输出信号的特点，对其进行小波变换，去除信号中高频部分的噪声，从而抑制了陀螺的随机漂移。通过仿真实验，肯定了使用小波分析算法对陀螺输出信号进行滤波消噪处理的可行性。在实际用于捷联惯导系统中的实验结果表明，有效地提高了系统的精度。
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| 关 键 词： | 光纤陀螺 捷联惯导系统 信号滤波 小波变换 输出信号 小波分析算法 消噪处理 仿真实验 漂移 去除 |
| 文章编号： | 1005-6734(2005)01-0077-04 |
| 修稿时间： | 2004年11月17 |
Application of Wavelet Analysis in Signal Processing of Gyros for Strapdown Inertial Navigation System |
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| LIU Zhen-ping,ZHANG Chun-Xi,WANG Yan.Application of Wavelet Analysis in Signal Processing of Gyros for Strapdown Inertial Navigation System[J].Journal of Chinese Inertial Technology,2005,13(1):77-80. |
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| Authors: | LIU Zhen-ping ZHANG Chun-Xi WANG Yan |
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| Abstract: | The theories of wavelet transform and multi-resolution analysis are introduced. Aiming at the specialty of the output signals of fiber optic gyros for strapdown inertial navigation system, the signals are decomposed with the theory of wavelet transform to eliminate noise in high frequency. Thereby gyro drift rate could be restrained. It is confirmed that the wavelet analysis is applicable for gyro signals processing through simulation results. The experiment of strapdown inertial navigation system using this technique for gyro signal filtering shows the improving accuracy of the system. |
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| Keywords: | wavelet transform multi-resolution analysis gyro drift rate noise reduction |
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