Research on Multibeam Bathymetric Strategy Based on Optimization Algorithm and Geometric Analysis

Abstract

This paper presents a comprehensive examination of the application of multibeam bathymetric strategies, specifically focusing on the transition from two-dimensional cross-sections to three-dimensional space. Firstly, a two-dimensional bathymetric model is established through geometric and mathematical analysis, considering the influence of the seabed slope. This allows for accurate calculation of the coverage width and overlap rate. Secondly, the model is expanded to incorporate three-dimensional sea conditions, considering multiple factors such as the relative angle between the survey line direction and the seabed slope. Lastly, an optimization algorithm is employed to minimize the total length of the survey line. The optimal solution is determined to be 206 survey lines with a spacing of 36.05m between them, resulting in a total length of the shortest survey line of 7425.7m.