Study on data acquisition and analysis method for sonar platform self-noise

A simultaneous data acquisition and analysis method for the array's internal self-noise and its external monitoring noise are presented in this paper to accurately evaluate the effect of platform self-noise on sonar detection. A sea trial is conducted in a certain sea area of China, in which the self-noise for a typical cruise speed and depth is acquired. The sea trial data are analyzed by using single channel, multi-channel and comparison analysis methods. These measuring results could provide the characteristics of the sonar platform self-noise varyiations with the working conditions, the space distribution features of the array's self-noise, and the relationship between the array's internal self-noise and its external monitoring noise.