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| 一种多算法融合的实时滤波在光纤陀螺中的应用 | |
| 引用本文： | 刘颖 李言 徐金涛. 一种多算法融合的实时滤波在光纤陀螺中的应用[J]. 光子学报, 2014, 39(6): 1116-1119. DOI: 10.3788/gzxb20103906.1116 |
| 作者姓名： | 刘颖 李言 徐金涛 |
| 作者单位： | (1 西安理工大学 机械与精密仪器工程学院,西安 710048) (2 中国科学院西安光学精密机械研究所 瞬态光学与光子技术国家重点实验室,西安 710119) |
| 基金项目： | 国防科技固体激光技术重点实验室 |
| 摘 要： | 根据光纤陀螺输出信号的特点和应用环境的要求,在Mallat小波变换的基础上,研究了一种多算法融合的实时滤波算法.该算法在光纤陀螺刚启动,数据量偏少时,通过IIR滤波器进行滤波|采样数据量足够多时,通过施加滑动数据窗来实现小波实时去噪,采用周期对称延拓的方法去除小波去噪的边界问题,可有效去除光纤陀螺输出信号中高频部分的噪音,提高滤波效果,抑制陀螺的随机漂移.通过实验验证了该方法对陀螺输出信号进行滤波的可行性和有效性. |
| 关 键 词： | 光纤陀螺 小波变换 实时滤波 IIR滤波器 |
| 收稿时间： | 2009-05-06 |
Application of a Multi-algorithm Fusion Real Time Filter in FOGs |
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| LIU Ying,LI Yan,XU Jin-Tao. Application of a Multi-algorithm Fusion Real Time Filter in FOGs[J]. Acta Photonica Sinica, 2014, 39(6): 1116-1119. DOI: 10.3788/gzxb20103906.1116 | |
| Authors: | LIU Ying LI Yan XU Jin-Tao |
| Affiliation: | (1 Faculty of Mechanical and Precision Instrument Engineering,Xi′an University of Technology,Xi′an,710048,China) (2 State Key Laboratory of Transient Optics and Photonics,Xi′an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi′an,710119,China) |
| Abstract: | A method of multi-algorithm fusion real time filter was researched on the basis of the characteristic of the output signals of fiber optic gyros(FOGs),Mallat wavelet transform theory and the requirements of FOG in the application environment.The IIR filtering is adopted to deal with the signal while the data is few in the initial sample time,a moving window is adopted to realize the wavelet real time filter,and period symmetry extend method to eliminate the problem of the boundary.The method can eliminate the high frequency noise,and the random drift is restrained.Experimental results show the feasibility and efficiency of the method in FOGs signals de-noising. |
| Keywords: | Fiber optical gyroscope Wavelet transform Real time filter IIR filtering |
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