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A Track Tracking Playback Method

A track tracking and track point technology, applied in the field of navigation, can solve the problems of reduced track playback accuracy, slow playback speed, and extremely complex algorithms, and achieve the effect of improving playback response speed and fast playback.

Active Publication Date: 2016-09-07
淮安市淮安区综合检验检测中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the above method is that the playback speed is slow, the algorithm used is extremely complex and has been calculated many times, and it is not judged in conjunction with the map scale. Therefore, in practical applications, the accuracy of the track playback is reduced due to the influence of different electronic map scales. In addition, when the trajectory point data is huge, the efficiency is very low

Method used

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  • A Track Tracking Playback Method

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Embodiment Construction

[0018] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] A track tracking playback method, wherein, firstly, the background of the track to be played back is determined. The background is generally an electronic map. In some embodiments, the background may also be certain engineering design drawings, structural layout drawings, and the like. The background is determined according to the actual required resolution or scale.

[0020] Then, obtain the track point to be played back. These track points are obtained and recorded by the positioning device carried by the user. After these track points are obtained by the user, they are generally uploaded or transmitted to a database used for track tracking playback for reading. When a track point represents multiple tracks, all track points corresponding to each track are processed separately. The following first lists the process...

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Abstract

The invention provides a trajectory tracking and replaying method for improving the trajectory replaying efficiency. The trajectory tracking and replaying method comprises the following steps: (1) dividing to-be-replayed trajectory points into a plurality of sections, wherein the numbers of the trajectory points of all the sections are same basically; (2) labelling all the trajectory points of a plurality of sections simultaneously on a map; (3) when labelling is finished respectively on all the sections and replaying all the trajectory points. The trajectory tracking and replaying method provided by the invention has the advantages that due to the adopted technical scheme, the replaying and response speed can be increased and faster replaying can be provided.

Description

technical field [0001] The present invention relates to the field of navigation, and more specifically, to a method for tracking and replaying a three-dimensional trajectory. Background technique [0002] GPS positioning can provide map information and navigation for outdoor personnel. One of the navigation functions is historical track playback, which is to mark the route traveled in a certain period of time in the past on the map to view the historical walking route. However, due to national laws or policies, there is a certain amount of offset in the map, and the coordinates of any location information can be accurately marked on the map only after the offset. The above-mentioned offset is realized through a certain algorithm. [0003] Existing track playback methods specifically include: angle judgment and distance judgment combined with a method of thinning track points, which is based on the original track point, the distance between the first and last points, the angl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/26
CPCG01C21/32G01C21/3673
Inventor 王洁
Owner 淮安市淮安区综合检验检测中心