Underwater topographic survey method suitable for shallow sea area of ​​radiant sand ridge group

A technology of underwater topography and measurement methods, which is applied to measurement devices, open-air water source surveys, radio wave measurement systems, etc. The effect of high efficiency and measurement accuracy
CN108469620BActive Publication Date: 2022-02-01江苏省有色金属华东地质勘查局地球化学勘查与海洋地质调查研究院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
江苏省有色金属华东地质勘查局地球化学勘查与海洋地质调查研究院
Publication Date
2022-02-01

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Abstract

The invention relates to an underwater terrain measurement method suitable for shallow sea areas of radiant sand ridge groups, in which a sounding platform, a PPK reference station and a mobile station are set; positioning and navigation data are collected, as well as the sounding data and sounding data measured by the sounder Antenna height data measured by the GNSS receiver; basic processing and data fine processing of the acquired data; using feature point matching scheme or section overall translation scheme to correct the influence of time delay; corresponding time points for bathymetry data and GNSS receiver The antenna height data is matched to obtain the topographic ellipsoid height data of the sea area; the topographic water depth data of the sea area are obtained through datum conversion. This method is applied to the measurement environment with wide shallow water, avoids dependence on tidal data, and has high measurement accuracy and efficiency.
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Description

technical field

[0001] The invention belongs to the field of seabed topography measurement, in particular to an underwater topography measurement method suitable for shallow water sea areas of radiation sand ridge groups. Background technique

[0002] The radiation sand ridge group is a general term for the sandbars exposed above the sea surface and the sand ridges hidden below the sea surface in a radial distribution, as well as their tidal channels. The radiation sand ridge sea area has always been a difficult area for bathymetry. The reasons can be summarized as follows:

[0003] (1) The water shoal is wide, and it is difficult for people and boats to reach

[0004] The most notable features of the radial sand ridge sea area are wide beaches, shallow water, and tidal creeks. In such an environment, it is inconvenient to use ordinary workboats for surveying, and it is also inconvenient to use artificial beaching methods. In many cases, it is often necessary to "catch t...

Claims

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