Jiangnan Industries Group Co,Ltd
Abstract：When the underwater rocket engine works, the tail will produce high-intensity and broadband background noise. Based on the analysis of the mechanism and physical characteristics of rocket engine noise, the pulse signal detection process and method under the background of rocket engine noise are mainly studied. Adaptive denoising and filtering are adopted to reduce the intensity of background noise and improve the signal-to-noise ratio. The detection method of impulse signal under the background of rocket engine noise is established to solve the problem that it is difficult to detect impulse signal with strong background noise, which provides a new idea for underwater application of rocket engine.