Business ship sounding data processing method and system

Through the merchant ship's depth measurement data processing methods, including data preprocessing, sound speed correction, tide level correction and water depth reliability evaluation, the problem of low accuracy of merchant ship's depth measurement data is solved, and higher data accuracy and navigation safety are achieved.

CN119469081APending Publication Date: 2025-02-18SHANGHAI WATERWAY ENG DESIGN & CONSULTING CO LTD
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Patent Information

Application Number
CN202411298843.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-18
Publication Date
2025-02-18

AI Technical Summary

Technical Problem

The existing technology is difficult to effectively deal with the problems of coarse deviation, tide level and sound speed in merchant ship depth measurement data, resulting in low data accuracy and cannot meet the needs of navigation safety.

Method used

A merchant ship depth measurement data processing method is proposed, including data preprocessing, sound speed correction, tide level correction and water depth reliability evaluation, and the final map water depth is calculated by average data from multiple trusted merchant ships.

Benefits of technology

It improves the accuracy and reliability of merchant ship depth measurement data, reduces the repeated investment in manpower and material resources, avoids the problem of untimely update of chart water depth, and improves the safety of ship navigation.

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Abstract

The invention provides a business ship sounding data processing method. The method comprises the following steps: acquiring positioning and sounding data and time labels of a business ship; pre-processing the positioning and sounding data, and setting a threshold value to filter and eliminate gross errors of the positioning and sounding data of the commercial ship; in combination with temperature and salinity data of a monitoring station, sound velocity field inversion is carried out by adopting a sound velocity formula, sound velocity correction is carried out on sounding data, and then the sounding data after sound velocity correction is corrected by adopting a residual water level tide forecasting method; and finally, repeated water depth gross error elimination is carried out in combination with sounding data of the same place of different commercial ships, and a repeated water depth average value is output as a final mapping water depth. Therefore, the water depth data of the commercial ship can be fully utilized, the repeated investment of manpower and material resources is reduced, the dilemma that the sea chart water depth is not updated in time due to strange water areas or sudden siltation after wind is avoided, and the ship navigation safety is improved.
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