基于小波能量谱的炮口脉冲噪声特性分析(英文)

Characteristics analysis of muzzle impulse noise based on wavelet energy spectrum

火炮发射时产生的脉冲噪声对操作人员会造成不同程度的损伤或影响,必须进行人员防护,因此分析炮口脉冲噪声特性对噪声的治理和人员防护具有重要意义。针对傅立叶分析方法在脉冲噪声分析中的不足,提出了小波能量谱分析方法。通过对试验数据进行分析,得到了脉冲噪声的局域信号特征和频谱能量分布。实验结果表明,小波能量谱方法适用于炮口脉冲噪声特性分析。

Because muzzle impulse noise could cause damage to or have an intluence on the operator, tiae ettecnve protecnve measures should be taken. Therefore, correct analysis of impulse noise characteristics is very significant. Considering the shortcomings of fast Fourier transform method （FFT） in analysis of muzzle impulse noise frequency characteristics, wavelet energy spectrum method is put forward. Based on specific experiment data, the frequency characteristics and spectral energy dis tribution can be obtained. The experiment results show that wavelet energy spectrum method is applicable in muzzle impulse noise characteristic analysis.