High-precision vehicle positioning device based on pavement fingerprint and method thereof

A positioning device and high-precision technology, applied in the field of map surveying and mapping, can solve problems such as influence and signal shielding, and achieve the effects of strong robustness, high accuracy and high positioning accuracy
CN106960591AActive Publication Date: 2017-07-18WUHAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2017-07-18

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Abstract

The invention discloses a high-precision vehicle positioning device based on a pavement fingerprint and a method thereof. The device comprises a map acquisition vehicle and a vehicle to be positioned. A first data acquisition unit on the map acquisition vehicle acquires a pavement image in real time. A positioning module and an inertial navigation module synchronously collect positioning information and inertial navigation information. A first control display unit preprocesses data so as to acquire an atlas. A second data acquisition unit on the vehicle to be positioned acquires current positioning information and a current pavement image of the vehicle in real time. A second control display unit compares the current positioning information with the atlas so as to acquire a plurality of similar images of rough matching, selects one most similar pavement image according to pavement fingerprint information, and calculates and acquires an accurate positioning result of the current pavement image according to a relative position relation of the most similar pavement image and fingerprint information in the current pavement image. In the invention, positioning precision is high, cost is low, an error is small and a positioning process is not influenced by signal shielding.
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Description

technical field

[0001] The invention relates to the technical field of map surveying and mapping, in particular to a vehicle high-precision positioning device and method based on road surface fingerprints. Background technique

[0002] At present, there have been some achievements in vehicle positioning, such as the applied patent CN106405601A, the application date was October 21, 2016, and the patent name is "vehicle positioning method, device and vehicle", which discloses a vehicle positioning method using street lamp position information. systems and methods. The applied patent CN106441321A, the application date is August 7, 2015, and the patent name is "vehicle positioning device, vehicle positioning method and navigation device", which discloses a vehicle positioning system and method using map matching.

[0003] In recent years, with the rapid development of smart vehicles, the demand for vehicle positioning, especially for metrological positioning, is becoming increa...

Claims

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