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Journal of Projectiles, Rockets, Missiles and Guidance >

2017 , Vol. 37 >Issue 6: 153 - 156

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2017.06.035

CORRELATION TECHNOLOGY

A Trend Term in the Elimination of Laser Doppler Signal Based on Improved EMD

  • FAN Guohao ,
  • LI Lingling ,
  • ZHANG Yanbing ,
  • MA Tiehua
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  • 1 National Computer Systems Engineering Research Institute of China, Beijing 100083, China;
    2 No.6904 Factory of PLA, Taiyuan 030051,China;
    3 National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan 030051, China

Received date: 2016-06-01

  Online published: 2025-05-12

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Abstract

When using the narrow pulse calibration system of micro Hopkinson bar to calibrate the high-g acceleration sensor, the trend item contained in laser Doppler signal would impact the subsequent operation. When EMD decomposition was used to eliminate the signal trend, the end effect would occur. Focusing on these problems, this paper presents an EMD decomposition method based on least square support vector regression machine. Through the simulation and the extraction of the measured Doppler signal trend, the experimental results show that using the improved EMD decomposition method to extract trend items can effectively reduce the end effect, and the effect is obvious. It also can improve the accuracy of instantaneous phase.

Key words： Doppler signal; trend term; least square support vector regression machine; improved EMD

Cite this article

FAN Guohao , LI Lingling , ZHANG Yanbing , MA Tiehua . A Trend Term in the Elimination of Laser Doppler Signal Based on Improved EMD[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2017 , 37(6) : 153 -156 . DOI: 10.15892/j.cnki.djzdxb.2017.06.035

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