Navigation electronic map dynamic topology rebuilding system method based on road data increment updating

Abstract

The invention discloses a navigation electronic map dynamic topology rebuilding system method based on road data increment updating, relating to an on-line increment-type updating method of a navigation electronic map. The invention is composed of a central terminal server, a communication network and a vehicle-mounted navigation terminal, wherein the central terminal server comprises a topology structure data storage module, a road data incremental updating module and an incremental updating data packet on-line generation module which support incremental updating; the communication network adopts a GPRS wireless communication way to realize data transmission between the central terminal server and the vehicle-mounted navigation terminal; and the vehicle-mounted navigation terminal comprises an incremental updating data packet analysis and conversion module, and can combine the incrementally updating data into local navigation data files. The invention can update the navigation electronic map on line according to real-time change of road networks, thereby effectively ensuring that a dynamic traffic inducing system provides correct travel route for drivers.

Description

【Technical field】 [0001] The invention relates to an online incremental update method for a navigation electronic map, and more particularly relates to a dynamic topology reconstruction system for a navigation electronic map based on incremental update of road data. 【Background technique】 [0002] At this stage, the update of the navigation electronic map mainly adopts the offline version update method. [0003] The off-line version update method takes a certain period of time as a cycle to carry out comprehensive repair and supplementary measurement, or even retesting of road data, and make a navigation electronic map with a new version number according to all the updated data collected, and use It replaces the user's original navigation electronic map. This method has a large workload, high cost, and requires a long update cycle (generally 6-12 months). Common road changes such as new roads and traffic control cannot be reflected in real time on the navigation electronic ...

AI Technical Summary

Problems solved by technology

This method has a large workload, high cost, and requires a long update cycle (generally 6-12 months). Common road changes such as new roads and traffic control cannot be reflected in real time on the navigation electronic map, which often causes wrong display of the induced route. Unable to meet the traffic guidance system's high-potential requirements for navigation electronic maps

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