| 光纤陀螺实时小波去噪中的阈值选取 |
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| 引用本文： | 吕品,刘建业,赖际舟,凌冬.光纤陀螺实时小波去噪中的阈值选取[J].弹箭与制导学报,2009,29(1). |
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| 作者姓名： | 吕品 刘建业 赖际舟 凌冬 |
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| 作者单位： | 南京航空航天大学导航研究中心,南京,210016 |
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| 基金项目： | 国家自然科学基金(60702003)资助 |
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| 摘 要： | 在使用小波域阈值滤波方法消除光纤陀螺输出噪声时,阈值的确定和阈值函数的选取是两个关键问题,它们直接关系到小波滤波的滤波效果,目前关于此方面的讨论较多基于离线分析。在综合考虑了实时性与滤波效果后提出了一种改进的阈值确定方法,并针对强制去噪动态性能差的问题提出了一种新的小波系数处理策略,最后利用LabVIEW软件对该算法进行了工程实现。通过试验验证,此方法在不影响滤波效果的前提下具有实时性能好的优点,具有较好的工程应用价值。
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| 关 键 词： | 小波 阈值 实时去噪 光纤陀螺 |
Research on Threshold Algorithm in Real-time Wavelet De-noising of FOG |
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| LV Pin,LIU Jianye,LAI Jizhou,LING Dong.Research on Threshold Algorithm in Real-time Wavelet De-noising of FOG[J].Journal of Projectiles Rockets Missiles and Guidance,2009,29(1). |
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| Authors: | LV Pin LIU Jianye LAI Jizhou LING Dong |
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| Affiliation: | Navigation Reserarch Center;NUAA;Nanjing 210016;China |
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| Abstract: | The key technology of wavelet de-noising is how to choose threshold and thresholding function,which is directly related to the filtering effect,but in nowadays the discussion is mainly based on off-line analysis.Considering of the filtering effect and the real-time problem,an improved determination method of threshold and a new thresholding function for the sake of dynamic property of compulsory de-noising are proposed and realized by using LabVIEW.Experiment results show that the method has good dynamic re... |
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| Keywords: | wavelet threshold real-time de-noising fiber optic gyroscope |
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