Research on Transient Noise Analysis Method of Ship Based on AR Model

With the rapid development of weapons and equipment, the noise of naval weapons and equipment such as ships and submarines in various countries has been controlled to a very low level. Because the current spectrum analysis method has limited ability to analyze and process such signals, this puts higher requirements on our target detection and recognition technology. Based on the advantages of autoregressive method in signal processing and high resolution, and compatible with parametric methods, this paper studies the application of AR model in the identification and analysis of noise sources of transient noise, and establishes a short-time high resolution spectral analysis method based on autoregressive model. And through the simulation and analysis of the known component transient noise signal and the actual transient noise test data analysis of the real ship, the method can accurately obtain the transient noise generation time and characteristic spectrum, which has strong application value in terms of engineering.