Submarine topography data verification method based on more than three pieces of uniformly distributed multi-beam data

Abstract

The invention discloses a submarine topography data verification method based on more than three pieces of uniformly distributed multi-beam data. The method comprises the following steps: transmittingand receiving wave beams through a transducer array based on an acoustic system; performing beamforming and conversion between an electric signal and a sound signal based on an acquisition system, and performing the classified storage of acquired water depth information, time information and sound intensity information as much as possible; based on an auxiliary sensor, combining and processing various sensor data used for navigation positioning and attitude calibration sound velocity tracking measurement; based on a data processing system, summarizing the measured data; integrating the data to drawing multi-beam sonar images reflecting the submarine topography and landform; comparing water depth data, sound intensity data and water column data in a measured area with measured data in a traditional mode based on a multi-beam wave sounding system, and then carrying out the regularization comparison processing on the traditional measured data, thereby improving the measurement precisionof the submarine topography.

Description

technical field [0001] The invention belongs to the technical field of seabed surveying and mapping, and in particular relates to a seabed topographic data verification method based on three or more uniformly distributed multi-beam data. Background technique [0002] One of the types of marine surveying and mapping is the surveying and mapping work that is mainly based on the measurement of seabed undulation. The seabed topography is usually measured by the echo sounder and side scan sonar installed on the ship to simultaneously determine the water depth and the size and position of the underwater features. Multi-beam echo sounding system, submarine photogrammetry, airborne laser sounding and ocean remote sensing bathymetry and other methods, according to the distance from the coast, the positioning of each measuring point can use optical positioning, radio positioning, hydroacoustic positioning, satellite positioning and Combined positioning and other methods, when using su...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of seabed terrain data verification method based on more than 3 evenly distributed multi-beam data, to solve the problem that the seabed terrain data proposed in the above background technology can be divided into profiler and depth sounder from the source of data data. Combined, single-beam, multi-beam and side-scan sonar methods, the multi-beam sounding system can not only obtain high-precision water depth data, but also obtain high-resolution backscattering intensity data. The perfect combination of the two makes multi-wave The bathymetry system is more favored by scientific researchers in the study of substrate classification. At present, there are data errors in the measurement process of traditional measurement methods, that is, the measurement process is affected by environmental variables, resulting in the measured seabed topography and There is a large error in the actual terrain, and the error cannot be verified by the system data, which leads to the problem of error superposition in the study of seabed terrain