Vehicle-mounted integrated navigation method and device

Abstract

The invention provides a vehicle-mounted integrated navigation method and device. The method comprises the steps that S10, a vehicle-mounted terminal and a mobile terminal build communication connection; S20, the vehicle-mounted terminal obtains current position information, and judges whether a current road section enters a city center or not, and if yes, the next step is executed; S30, the vehicle-mounted terminal detects whether a current positioning error E is higher than a threshold value E0 or not, and a positioning request is sent to the mobile terminal; S40, the mobile terminal sends the positioning request to a server and obtains first position information to the vehicle-mounted information; S50, the vehicle-mounted terminal corrects the current position information according to the first position information, second position information is obtained; S60, the vehicle-mounted terminal obtains a live-action road section image in front of a vehicle; S70, the vehicle-mounted terminal obtains lane information of the road section in front of the vehicle and the actual lane where the vehicle is located; S80, according to the lane information and the second position information corrected by the actual lane where the vehicle is located, third position information is obtained; S90, according to the third position information, navigation is performed. Accurate navigation is achieved in various positioning ways.

Description

technical field [0001] The present invention relates to the technical field of vehicle navigation, in particular to a vehicle integrated navigation method and device. Background technique [0002] At present, in the car navigation system, the location of the vehicle on the road network is mainly determined through the map matching algorithm, that is, using geometric methods, probability statistics methods, pattern recognition methods or artificial neural networks according to the location data obtained in the positioning module and map road network information. method, etc., to match the car position to the corresponding position on the map road. The accuracy of navigation depends on the accuracy of location data and the accuracy of map matching. When the car is in an environment where there are tall buildings on both sides of the road, trees are seriously blocked, and the roads are crisscrossed, the accuracy of obtaining the car position data is greatly reduced, resulting ...

AI Technical Summary

Problems solved by technology

When the car is in an environment where there are tall buildings on both sides of the road, trees are seriously blocked, and the roads are criss-crossed, the accuracy of obtaining the car's position data is greatly reduced, resulting in matching the car's position to the wrong position on the map, and the navigation system performs route planning based on this wrong position , navigation, giving wrong navigation guidance information, which greatly reduces the reliability and practicability of the product

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