Research on Multibeam Bathymetry Based on Geometric Analysis Models and Brute Force Search Algorithm

Abstract

In recent years, multibeam sonar systems have gradually replaced single-beam sonar systems. They have become widely accepted and extensively used in the field of seabed depth detection because they overcome the lack of data between survey lines inherent to single-beam systems. The issue of high redundancy in seabed depth data has been a long-standing and challenging problem to solve. To minimize the redundancy rate of seabed depth data as much as possible, this paper conducts a study on the redundancy rate of multibeam sonar systems using different depth measurement methods based on geometric analysis and brute-force search algorithms. This paper establishes a geometric analysis model that utilizes a brute-force search algorithm to enumerate all possible outcomes and selects the optimal solution. The results, upon comparison, show that the redundancy rate of the equidistant uniform survey line method is one-sixth of that of the traditional grid measurement method, indicating good practicality and significantly improving the data space utilization of seabed depth measurement systems.