Navigation system and accurate navigation method of road crossing

Abstract

The invention relates to a navigation system and an intersection accurate navigation method thereof. According to the method, firstly a navigation path is planed according to the starting place and the destination determined by a user; a navigation display is performed on an electronic map at a speed of a self-vehicle location detection module as a traveling speed of a user's vehicle, and whethera plurality of adjacent sequential node sections are on the planned navigation path during the traveling process of a user is judged; and a navigation display is performed on an electronic map at aspeed of a velocity sensing element of the user's vehicle as a traveling speed of a user's vehicle when the user's vehicle approaches to the section with the plurality of adjacent sequential node sections at a distance. After the technical proposal of the invention is adopted, the influence on the users' navigation caused by the variation of the navigation speed and the actual traveling speed of the user's vehicle on sections such as a overhead viaduct, an intersection with multi-sideways, a roundabout and the like can be eliminated, and the influence on the system navigation caused by speed switching can also be reduced to a maximum extent.

Description

technical field [0001] The invention belongs to the technical field of navigation, in particular to a navigation system and an accurate navigation method for intersections thereof. Background technique [0002] At present, the global positioning system (Global Positioning System, GPS) for vehicles is one of the important application directions of GPS navigation. The GPS antenna of the car GPS navigation system receives the data information transmitted by at least 3 of the 24 GPS satellites around the earth, combined with the electronic map stored in the car navigation terminal, the position coordinates determined by the GPS satellite signal and this match to determine the exact position of the navigation object in the electronic map. The user driving the vehicle can let the computer select the driving path while driving, and use this as the direction guide, so as to reach the destination correctly and quickly. [0003] figure 1 It is a structural diagram of a car navigati...

AI Technical Summary

Problems solved by technology

However, when the user travels to road sections such as viaducts, intersections with multiple branches, roundabouts, etc. that have multiple adjacent continuous forks in the same direction, if the vehicle speed is fast, the deviation between the navigation speed and the actual speed may make the user Some forks are missed, causing inconvenience to users

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