针对飞机上小口径炮连续发射在其装备上产生振动信号信噪比低、且呈非平稳性的特性,对炮击振动信号进行小波降噪处理,重点突出了飞机在连续发射过程中不同时刻受到的激振。分析中利用了双正交小波对炮击振动信号按Mallat算法进行分解,运用小波的滤波性能去除随机噪声,对振动信号进行了重构。 Aiming at the low signal-to-noise ratio and non-stationary characteristics of continuous launch of small-caliber guns on aircraft, the noise signal of the small-caliber gunship is denoised on the surface of the aircraft. The focus of the aircraft firing is at different times during continuous launching Excitement. In the analysis, the bistatic vibration signal is decomposed by Mallat algorithm using biorthogonal wavelets. The random noise is removed by the filtering performance of the wavelet, and the vibration signal is reconstructed.