MF method for automatic fusion of multi-source heterogeneous bathymetric data to construct high-resolution dbm

Abstract

The invention discloses an MF method for automatically fusing multi-source heterogeneous water depth data to construct a high-resolution DBM. This method organically integrates multi-beam, single-beam, electronic chart data and global ocean topography data through the technical process of merging-fusion, so as to solve the problem of complex sources of global bathymetric data, large differences in accuracy, and difficulty in integrating and constructing high-level data. Problems with precision digital bathymetry models. The method includes the following steps: preprocessing data, evaluating accuracy, gridding, grid merging, fusion, visual comparison analysis and cleaning abnormal points, and completing the fusion of multi-source water depth data. The fused DBM can better reflect fine topographic feature information, while retaining high-resolution topographic details, it fills in data gaps, and can be extended and applied to the management and utilization of multi-source heterogeneous bathymetric data. , marine geographic information system, seabed topography and landform mapping, marine scientific research and other aspects have important practical application value.

Description

technical field [0001] The invention relates to the technical fields of marine surveying and mapping, seabed topography and landform mapping, computer graphics, marine geographic information system and marine science. Background technique [0002] Digital bathymetric model (Digital Bathymetric Model, DBM) is the basis for almost all modern marine activities. High-resolution DBM can be used not only for the construction of charts, but also for the analysis of landform characteristics and causes, seabed structure, marine resources, etc. Research. However, since more than 80% of the global sea area is still not detected by multi-beam, historical bathymetric data still have to be used when constructing deep-sea large-scale DBM. At present, ocean bathymetry data are mainly collected independently for different purposes, resulting in many differences in sources and resolutions. The multi-source complexity of global ocean bathymetric data is not conducive to the construction of h...

AI Technical Summary

Problems solved by technology

[0005] The invention discloses an MF (Merge-Fusion) method for automatically merging multi-source heterogeneous water depth data to construct a high-resolution DBM, aiming to solve the problem of interpolation accuracy in data blank areas and sparse areas in the process of multi-source data fusion

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