Login / Register Submit Your Article
cover
Journal of Engineering Innovations & Technology

Volume 7, 2025 - Issue 2

Submit Manuscript Journal Homepage
Latest Issue
Input keywords, title, abstract, author, affiliation etc..
Article Menu
Browse this journal
Vol. 7 (2025)
Vol. 6 (2024)
Vol. 5 (2023)
Vol. 4 (2022)
Vol. 3 (2021)
Vol. 2 (2020)
Vol. 1 (2019)
Navigation

Journal Article An open access journal
Journal Article

Study on Noise Analysis and Frequency Estimation in Aircraft Laser Speed Measurement Technology

by Shuai Huang 1,* ,  Xu Tang 1,2  and  Zipeng Chen 1,2
1
College of Mechanical and Electrical Engineering, Quanzhou University of Information Engineering, Quanzhou, China
2
Co-second author
*
Author to whom correspondence should be addressed.
JEIT  2025 7(2):256; https://doi.org/10.69610/j.iem.20250415
Received: / Accepted: / Published Online: 15 April 2025
View Full-Text
Download PDF

Abstract

Aiming at the problem of accuracy degradation of laser velocimetry signals in high-speed flight scenarios due to complex noise interference, this study constructs a frequency estimation method based on the noise feature analysis of Butterworth filter and multi-domain spectrum fusion. Through the quantitative analysis of noise mean, variance and power spectral density, combined with the joint spectral analysis of Fourier Transform (FT) and Discrete Fourier Transform (DFT), the high-precision frequency estimation of noise-containing signals is achieved in MATLAB simulation environment, and the estimated frequency is 40999836.00Hz, with the relative error less than 0.01%. The proposed algorithm improves the signal-to-noise ratio by more than 35% while maintaining the signal integrity, which provides a reliable theoretical and methodological support for the noise suppression and parameter measurement of the laser speed measurement system under the high dynamic flight environment.

Keywords: Laser Doppler Velocimetry; Noise Suppression; Spectral Analysis; Butterworth Filter; Velocimetry Accuracy;
Copyright: © 2025 by Huang, Tang and Chen. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY) (Creative Commons Attribution 4.0 International License). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

Share and Cite

ACS Style
Huang, S.; Tang, X.; Chen, Z. Study on Noise Analysis and Frequency Estimation in Aircraft Laser Speed Measurement Technology. Journal of Engineering Innovations & Technology, 2025, 7, 256. doi:10.69610/j.iem.20250415
AMA Style
Huang S, Tang X, Chen Z. Study on Noise Analysis and Frequency Estimation in Aircraft Laser Speed Measurement Technology. Journal of Engineering Innovations & Technology; 2025, 7(2):256. doi:10.69610/j.iem.20250415
Chicago/Turabian Style
Huang, Shuai; Tang, Xu; Chen, Zipeng 2025. "Study on Noise Analysis and Frequency Estimation in Aircraft Laser Speed Measurement Technology" Journal of Engineering Innovations & Technology 7, no.2:256. doi:10.69610/j.iem.20250415

Article Metrics

Article Access Statistics

References

  1. Khalil H, Kim D, Nam J, et al. Accuracy and noise analyses of 3D vibration measurements using laser Doppler vibrometer[J]. Measurement, 2016, 94: 883-892.
  2. Mayrhofer N, Woisetschläger J. Frequency analysis of turbulent compressible flows by laser vibrometry[J]. Experiments in fluids, 2001, 31(2): 153-161.
  3. He Z, Fang Z, Huang X, et al. Sound velocity measurement based on laser-induced micro-flyers[J]. AIP Advances, 2024, 14(10).
  4. Rastello M, Klema M R, Carpenter A B, et al. Velocity measurements in developing narrow open-channel flows with high free-stream turbulence: Acoustic Doppler Velocimetry (ADV) vs Laser Doppler Anemometry (LDA)[J]. Flow Measurement and Instrumentation, 2022, 87: 102206.
  5. Hu Y, Zhu W, Lyu L, et al. Interpretation of bimodal interference in and optimized operational modal analysis for long-range continuously scanning laser Doppler vibrometer measurements with a beam under white noise excitation[J]. Measurement, 2023, 218: 112998.
  6. Méry F, Sebbane D. Aerodynamic characterisation of porous fairings: pressure drop and Laser Doppler Velocimetry measurements[J]. Scientific Data, 2023, 10(1): 39.
  7. Sha Z, Wu H, Chen X. Improved algorithm for laser Doppler velocimetry based on spectrum analysis[C]//3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023). SPIE, 2023, 12757: 758-765.
  8. Jenkins T P, Morgan R K, Mayo D E, et al. Planar Doppler Velocimetry in a Full-Scale Aircraft Engine Exhaust[C]//AIAA SCITECH 2023 Forum. 2023: 0632.
  9. Liu Q, Zhou B, Cheng R, et al. High temporal resolution pyrometry and velocimetry based on acoustic frequency division multiplexing[J]. IEEE Transactions on Instrumentation and Measurement, 2022, 71: 1-11.
  10. Chen L, Zhou J, Xi C, et al. Influence of Spherical Aberration on the SNR in Single-Beam Laser Doppler Velocimeter for Remote Measurement[J]. IEEE Access, 2023, 11: 142383-142391.