A ship trajectory restoration method based on vector interpolation

A technology of ship trajectory and repair method, which is applied in complex mathematical operations, image data processing, instruments, etc. It can solve the problems of increased algorithm running time, rough repair results, and low accuracy of trajectory repair, achieving repair effectiveness and less time cost, repair has effect

Active Publication Date: 2019-05-07
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a ship trajectory repair method based on vector interpolation, which solves the problem of rough repair results for c...

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  • A ship trajectory restoration method based on vector interpolation
  • A ship trajectory restoration method based on vector interpolation
  • A ship trajectory restoration method based on vector interpolation

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Embodiment Construction

[0042] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] A ship track repair method based on vector interpolation provided by the present invention is based on the iterative and weighted average theory. First, the number of track points to be repaired is set, the time interval of track points to be repaired is determined, and the latitude and longitude coordinates of the start and end points are transformed into Gaussian projections. Then calculate the dynamic information of the trajectory to be repaired according to the dynamic information of the starting and ending points, and use the dynamic information of the trajectory to be repaired, the dynamic information of the starting and ending points, and the coordinate information to obtain two groups of coordinate prediction values; then carry out weighted average to the two groups of coordinate prediction values, Then carry out the Gaussian ...

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Abstract

The invention relates to a ship trajectory restoration method based on vector interpolation, and belongs to the technical field of graphs and visualization. The method comprises the following steps: S1, inputting dynamic information, coordinate information and time of starting and ending points of a missing track segment, setting the number of track points to be repaired, determining a time interval of the track points to be repaired, performing Gaussian projection conversion on latitude and longitude coordinates of the starting and ending points, and converting a speed unit of the starting and ending points; S2, adopting a bidirectional iteration mode, and obtaining the dynamic information of the two sets of track points to be repaired according to the dynamic information of the startingpoint and the ending point, and on the basis, using the dynamic information of the starting point and the ending point and Gaussian plane coordinates to obtain two sets of coordinate predicted values;And S3, carrying out weighted average on the two groups of coordinate predicted values according to the weight, and carrying out Gaussian back projection calculation to obtain a final latitude and longitude coordinate of the to-be-repaired track point. According to the method, the ship track repair accuracy of curvilinear motion can be improved, and the algorithm operation time is correspondinglyshortened.

Description

technical field [0001] The invention belongs to the technical field of graphics and visualization, and relates to a ship trajectory repair method based on vector interpolation. Background technique [0002] The ship's voyage track is a record sequence of the ship's position and time, and the ship track data is usually provided by AIS (Automatic Identification System). With the development of maritime navigation, a large number of AIS devices have been installed on ships and shore bases, and a shore-based ship dynamic data exchange network has been established to receive and record the movement information broadcast by ships sailing along the coast around the clock, forming a regional and even global network. The ship trajectory database. Trajectory analysis is based on a complete trajectory, but due to various subjective and objective reasons such as improper AIS operation, artificial shutdown of AIS equipment, abnormal operation of AIS equipment itself, or congestion of in...

Claims

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Application Information

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IPC IPC(8): G06F17/15G06T3/40
Inventor 秦红星杨茜
Owner CHONGQING UNIV OF POSTS & TELECOMM
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