【摘要】 针对水声信号的低信噪比、非平稳等特点,采用小波包去噪的方法,研究了烟火药水中燃烧信号的去噪问题,并结合Matlab软件编程来实现。通过去噪后的信噪比(SNR)的计算,对该方法的去噪效果进行了定量评估。结果表明,利用小波包分析对烟火药水中燃烧信号进行去噪处理具有一定的可行性。更多还原

【Abstract】 Aiming at the characteristic of underwater acoustic signal,such as low signal noise ratio and non-stationgary ect.,the signal denoising of pyrotechnic composition burning underwater was studied by using the wavelet package,which combined with the Matlab programme.The noise reduction effect was proved by the calculation of signal noise ratio(SNR).Results show that it is practicable for the elimination of signal noise of pyrotechnic composition burning underwater.更多还原