Research on multi-beam line measurement based on geometric mathematical model

Ocean sounding is an important work to determine the depth of sea water and explore the seabed topography. Nowadays, there are two main groups of ocean sounding techniques: single-beam sounding system and multi-beam sounding system. The multi-beam sounding system overcomes the shortcomings of the single beam sounding system, which is suitable for simple exploration tasks, and can provide more accurate and effective terrain data. In this paper, a geometric mathematical model is established according to the triangle formed between the beam emitted by the transducer and the submarine slope at different survey line positions of the survey ship, and the data of the central sea area is calculated by using the triangular function relationship. The relevant result data is calculated by using the similar ratio characteristics and coverage formula of each triangle.