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Disaster recovery method and device for map matching, equipment and storage medium

A map matching and disaster recovery technology, applied in measurement devices, satellite radio beacon positioning systems, instruments, etc., can solve the problems of reducing the amount of calculation, poor disaster recovery effect, and reducing the amount of data to be sent, and achieves a reduction in Data volume, guaranteed stability requirements, and low computational cost

Pending Publication Date: 2021-06-18
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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AI Technical Summary

Problems solved by technology

At present, map matching cannot reduce the amount of distributed data and reduce the amount of calculation at the same time, resulting in poor disaster recovery effect

Method used

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  • Disaster recovery method and device for map matching, equipment and storage medium
  • Disaster recovery method and device for map matching, equipment and storage medium
  • Disaster recovery method and device for map matching, equipment and storage medium

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Embodiment approach

[0071] In a first optional implementation manner, determining whether the key node is legal includes: determining whether the real-time trajectory will pass the key node when the real-time trajectory is about to reach the key node. Specifically, it may be determined whether the real-time trajectory will pass through the key node when the current real-time trajectory point of the real-time trajectory is at a preset distance from the key node. Take determining the legitimacy of key nodes based on time intervals as an example. If it takes 10 minutes to drive from point A to point B under normal circumstances, but the time corresponding to the real-time trajectory collected by GPS exceeds 10 minutes, for example, 1 hour, then It is considered that the trajectory point of the real-time trajectory will not pass through the key node with a high probability, and the key node is illegal. For information such as speed and direction to determine the legality, you can refer to the introdu...

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Abstract

The invention discloses a disaster recovery method and device for map matching, equipment and a storage medium, and relates to the field of map matching. According to the specific implementation scheme, the method comprises the following steps: thinning a first track issued by a GPS point distribution system based on a preset key node to obtain a second track; and determining a path of the second track based on the second track and a pre-established path set so as to perform map matching according to the determined path of the second track, wherein the path set comprises a plurality of paths, and each path comprises the plurality of key nodes. The disaster recovery effect of map matching can be improved.

Description

technical field [0001] This application relates to the field of data mining, specifically to the field of map matching. Background technique [0002] Trajectory mining has a wide range of applications in intelligent transportation, navigation route mining, digital map making, intelligent engine intelligence, etc. Trajectory mining requires a large amount of trajectory data, and the accuracy of trajectory data affects its application effects in various aspects. Therefore, in the process of trajectory mining, it is necessary to map the trajectory data. [0003] During the map matching process, disaster recovery processing is often performed. For example, in the process of sending track data to the map matching device, some track points in the track data will be filtered before being sent to the map matching device. However, in the process of map matching, the more complete the trajectory data, the lower the calculation cost of map matching, and at the same time, the better th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/32G01S19/42
CPCG01C21/32G01S19/42
Inventor 杨宁王亦乐施忠琪
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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