Journal of Projectiles, Rockets, Missiles and Guidance

The Resonant Noise Reduction Method of Muzzle Shock Wave Based on NOA-VMD

YANG Haoyue, MENG Xiangrui, JU Mingchi, WANG Yingzhi

JPRMG, 2024, 44(4): 9-17. DOI: 10.15892/j.cnki.djzdxb.2024.04.002

Fig.10 Time domain of the noise reduction algorithms

Other figure/table from this article

Fig.1 Schematic diagram of shock wave test device distribution
Fig.2 Time domain diagram of muzzle shock wave
Fig.3 Frequency domain diagram of muzzle shock wave
Fig.4 Flow chart of signal resonant noise reduction
Table 1 Table of NOA parameters
Fig.5 Comparison of fitness function curve results
Fig.6 Time and frequency domain diagram of shock tube signal
Fig.7 Curve of fitness function of shock tube test signal
Fig.8 Intrinsic mode functions diagram of shock tube test signal
Fig.9 Result of noise reduction of shock tube signal
Table 2 Statistical table of shock tube test signal and noise reduction signal parameters
Fig.11 Frequency domain of the noise reduction algorithms
Fig.12 Time domain comparison of shock wave
Fig.13 Result of shock wave denoising
Fig.14 Result of shock wave denoising
Table 3 Statistical table of muzzle shock wave parameter characteristics before and after noise reduction