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Journal of Projectiles, Rockets, Missiles and Guidance >

2015 , Vol. 35 >Issue 2: 171 - 174,178

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2015.02.044

CORRELATION TECHNOLOGY

EMD Algorithm Based on Wavelet Pretreatment of Static North-seeking Signal Analysis

  • ZHANG Tengfei ,
  • TAN Lilong
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  • The Second Artillery Engineering University, Xi'an 710025, China

Received date: 2014-04-30

  Online published: 2025-05-26

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Abstract

In view of unreliability of EMD algorithm applied to north-seeking signal, the EMD method based on wavelet pretreatment was proposed. An adaptive threshold based on the correlation coefficient and 3.0 standard was also proposed, and it effectively improves the traditional wavelet threshold denoising methods. Decomposition method. the new method avoids modal aliasing occurring to direct application of EMD, and effectively extracts the north-seeking signal error information and useful information. It can be used to north-seeking research in a certain kind of magnetically suspended gyroscope.

Key words： empirical mode decomposition; wavelet pretreatment; modal aliasing; north-seeking data

Cite this article

ZHANG Tengfei , TAN Lilong . EMD Algorithm Based on Wavelet Pretreatment of Static North-seeking Signal Analysis[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2015 , 35(2) : 171 -174,178 . DOI: 10.15892/j.cnki.djzdxb.2015.02.044

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References

[1]
吴金朋. 光纤陀螺寻北仪参数误差分析与补偿方法研究[D]. 长沙: 国防科技大学, 2008.
[2]
李林洁. EMD和ICA 在内燃机振声信号分析中的应用研究[D]. 天津: 天津大学, 2012.
[3]
王若平, 杨彦朋, 王国林, 等. EMD在路面不平度信号趋势项中的应用[J]. 拖拉机与农用运输车, 2010, 27(10):64-66.
[4]
朱学峰, 韩宁. 基于经验模态分解的非平稳信号趋势项消除[J]. 飞行器测控学报, 2012, 31(1):65-70.
[5]
Huang NE, Zheng Shen. The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis[C] // Proc R Soc London, 1998(454A): 903-995.
[6]
胡广书. 现代信号处理教程[M]. 北京: 清华大学出版社, 2004: 397-405.
[7]
何世彪, 杨士中. 3σ准则在小波消噪中的应用[J]. 重庆大学学报, 2002, 25(12):58-61.
[8]
卜继军, 魏贵玲, 李勇建, 等. 陀螺寻北仪二位置寻北方案[J]. 中国惯性技术学报, 2002, 10(3):46-49.
[9]
Flandrin P, Ring G. Empirical mode decomposition as a filter bank[J]. IEEE Signal Processing Letters, 2004, 11(2):112-114.
[10]
金凤. 时间序列系统建模方法研究[D]. 沈阳: 东北大学, 2006.
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