Influence of design parameters on omnidirectional sound target strength of underwater structure

In order to reduce the probability of underwater structures being detected by active sonar, it is necessary to consider how to reduce the omnidirectional sound target strength of the structure. However, in order to weigh the overall performance of the structure, the design parameters of it can only be adjusted within a limited range. Under such conditions, a comprehensive understanding of the influence of all adjustable parameters on the sound target strength of the structure is the key to maximizing the concealment of the structure. In this paper, the planar element method (PEM) based on the high-frequency approximate Kirchhoff equation is used to study the sound target strength of the sail of the Benchmark Submarine model. The influence of design parameters such as size, shape and material on the omnidirectional target strength of the sail is analyzed. The results gained by this work can provide a reference for the design of low target strength underwater structures.