Response Simulation of Multi-path Directional Interferences on Sonar Array

Tow ship noise is a typical multi-path directional interference, and the receiving response of which on towed line array is worthy of in-depth study. Firstly, the sea trial data was analyzed to summarize the tow ship noise characteristics. Then the underwater acoustic field of tow ship noise was modeled to achieve the power distribution of the noise. Finally an important result was obtained, that is the noise power covers not only the end fire direction, but also a direction band. The conclusion of this paper would be helpful in the study of multi-path directional interference suppression.