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Research on the hydrographic survey cycle for updating navigational charts

Published online by Cambridge University Press:  21 January 2021

Jing Duan
Affiliation:
School of Printing and Packaging, Wuhan University, Wuhan, China
Xiaoxia Wan*
Affiliation:
School of Printing and Packaging, Wuhan University, Wuhan, China
Jianan Luo
Affiliation:
School of Printing and Packaging, Wuhan University, Wuhan, China
*
*Corresponding author. E-mail: marine_whu@126.com

Abstract

Due to the vast ocean area and limited human and material resources, hydrographic survey must be carried out in a selective and well-planned way. Therefore, scientific planning of hydrographic surveys to ensure the effectiveness of navigational charts has become an urgent issue to be addressed by the hydrographic office of each coastal state. In this study, a reasonable calculation model of hydrographic survey cycle is established, which can be used to make the plan of navigational chart updating. The paper takes 493 navigational charts of Chinese coastal ports and fairways as the research object, analyses the fundamental factors affecting the hydrographic survey cycle and gives them weights, proposes to use the BP neural network to construct the relationship between the cycle and the impact factors, and finally establishes a calculation model of the hydrographic survey cycle. It has been verified that the calculation cycle of the model is effective, and it can provide reference for hydrographic survey planning and chart updating, as well as suggestions for navigation safety.

Type
Research Article
Copyright
Copyright © The Royal Institute of Navigation 2021

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