Research On Dynamic Optimization of Multi-Beam Bathymetry Based on Computational Geometry

Abstract

The purpose of this study is to construct a mathematical model of the coverage width W and the overlap rate η between adjacent strips of multi-beam measurement by computational geometry method in the case of uniform slope of seabed topography, and to study the optimization of the channel line in the area to be measured. The purpose of this study is to construct a mathematical model of the coverage width W and the overlap rate η between adjacent strips of multi-beam measurement by computational geometry method in the case of uniform slope of seabed topography, and to study the optimization of the channel line in the area to be measured. By looking for the geometric relationship of the coverage width W, the mathematical model of the repetition rate η related to the coverage width W is obtained, and the data of seawater depth, coverage width and coverage rate η at different distances from the center point are calculated. Secondly, considering the change of the channel angle, the mathematical model between the offset angle ψ and the coverage width W of the aerial survey line is finally obtained. Finally, based on this result, the design of the shortest aerial survey line for sounding in the rectangular sea area to be measured is discussed. The arrangement of the main survey line needs to meet the requirements of the bar overlap rate index [ 1 ] In this study, a mathematical model is established for the problem of multi-channel angle sounding with slope topography. The relevant research results can be used for the subsequent research of more complex multi-beam sounding problems.