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兵工学报 ›› 2003, Vol. 24 ›› Issue (2): 257-260.

• 实验技术与分析 • 上一篇    下一篇

小波消噪及其在传感信号处理中的应用

1:戴龙成,宣益民;2:尹健   

  1. 1:南京理工大学动力工程学院,江苏南京,210094;2:中国人民解放军空军第八研究所
  • 收稿日期:2002-04-01 修回日期:2003-04-01 上线日期:2014-12-25
  • 通讯作者: 戴龙成

De-Noising Methods and Its Applications in Sensing Signals Processing Noises

1:Dai Longcheng, Xuan Yimin;2:Yin Jian   

  1. 1:Power Eng. College, NUST, Nanjing, 210094;2:Research Institute No.8,PLAAF
  • Received:2002-04-01 Revised:2003-04-01 Online:2014-12-25
  • Contact: Dai Longcheng

摘要: 由于影响导弹安全分离因素的存在,所测得的导弹分离参数往往被外界噪声所淹没,利用噪声分离的非线性小波分析,重建信号几乎完好保留了信号中的突变、尖峰成分,有效地提取导发架行程末端的准确分离点 ; 利用浮动阈值去噪算法,有效区分导弹俯仰角的有用信号和随机噪声,识别含噪传感信号中有用信号的发展趋势,结果证明小波分析方法在导弹安全分离中得以应用的有效性。

关键词: 信息处理技术 , 传感信号 , 小波分析 , 浮动阈值消噪

Abstract: De-noising by soft-thresholding is a new signal detection method in wavelet analysis. On the basis of briefly introducing the wavelet analysis and nonlinear theory by soft-thresholding, useful informa?tion reflecting the missile’s vertical acceleration can be effectively extracted from highly noised signals. The paper also uses the soft-thresholding de-noising method to distinguish the trend of vertical velocity between normal and failure signals containing noises. The study shows the validity of the application of wavelet anal?ysis to launching systems.

Key words: information processing technique , sensing signal containing noise , wavelet analysis , de- noising by soft-thresholding

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