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相关技术

基于小波预处理的EMD算法静态寻北信号分析

  • 张腾飞 ,
  • 谭立龙
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  • 第二炮兵工程大学,西安 710025

张腾飞(1989-),男,江苏沛县人,硕士研究生,研究方向:定位定向与基准传递,故障诊断与检测。

收稿日期: 2014-04-30

  网络出版日期: 2025-05-26

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

摘要

针对直接应用EMD算法处理寻北信号的不可靠性,提出了基于小波预处理的EMD分解方法,并对传统小波阈值去噪分析方法做一改进,提出一种相关系数和3.0准则的自适应阈值方法。新方法规避了直接应用EMD过程中存在的模态混叠问题,并有效提取了寻北信号的误差信息和有用信息,能够用于某型磁悬浮陀螺寻北仪的寻北研究中。

本文引用格式

张腾飞 , 谭立龙 . 基于小波预处理的EMD算法静态寻北信号分析[J]. 弹箭与制导学报, 2015 , 35(2) : 171 -174,178 . DOI: 10.15892/j.cnki.djzdxb.2015.02.044

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.

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参考文献

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