Multi-beam Bathymetric measurement error analysis based on Integrated Navigation System

Multi-beam depth system is developed from single-frequency depth system, which is a new technique of underwater topographic measurement with high efficiency, high precision and high resolution. Compared with the traditional single beam depth meter, multi-beam depth system has many advantages, such as large range, high speed, high precision, digital recording and image-making automation, so that underwater topographic measurement technology has developed to a new level. This paper expounds the measurement principle and composition of multi-beam depth system, as well as the data processing method, and analyzes the motion compensation method for multi-beam depth system based on combined conductivity. This paper first studies the error factors of multi-beam depth measurement system, combines the combined inertial navigation system to explore the impact of various errors on the measurement results, simulates the use of combined inertial guidance system to assist multi-beam depth measurement data to obtain high-precision high-reliability measurement data, and finally summarizes the development and application of the current multi-beam technology.