Method for generating ship track curve based on voluntary observation ship (VOS) data

Abstract

The invention relates to a method for generating a ship track curve based on voluntary observation ship (VOS) data, in particular to a method for generating the ship track curve with a large number of discrete points. The method comprises the following steps: reading VOS; recognizing the voyage according to the VOS track points; arranging the VOS track point data; connecting the VOS track curves; correcting the connection of the track curves according to the obstacle-avoiding path design; generating the VOS track curve. Through adoption of the method, the problem that the ship track curve or ship route is extracted a little can be solved; the ship track curve generation method is provided; a large number of discrete VOS point data can be used for generating into a continuous ship track curve which is beneficial for mastering the regional marine traffic distribution conditions and monitor ship behavior so as to ensure the marine traffic security as well as providing decision-making reference for the marine administrative authority; the method is of great significance on protecting the life and property of people, protecting the marine environment and ensuring the national core strategic interests.

Description

technical field [0001] The invention relates to a method for merging discrete points into a characteristic line, in particular to a method for generating ship track lines based on a large number of discrete point data of VOS. Background technique [0002] Ship trajectory is the specific route for ships to engage in cargo, passenger transportation or other tasks between two or more ports. The acquisition of ship trajectory is of great significance to grasp the distribution of regional maritime traffic, monitor ship behavior, and ensure the safety of maritime traffic. [0003] To obtain the trajectory of the ship, it is first necessary to monitor the ship for a long period of time in order to obtain relevant information. Currently, ship information acquisition methods are mainly divided into two types, ship extraction based on remote sensing images and automatic report of ship information. Obtaining ship information through remote sensing images mainly uses methods such as c...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is: overcome the above-mentioned defect of prior art, propose a kind of ship track line generation method based on voluntary observation ship data, it generates continuous ship track line with a large amount of discrete ship point data, Solve the problem that the ship trajectory or track line is rarely extracted, and overcome technical difficulties such as the identification of the voyage to which the track point belongs, the removal of redundant and invalid ship points, and the correction of wrong trajectory lines

Images